Ezad Blog: network

Windows or Linux hosting – which is best for you?

Windows or Linux hosting – which is best for you?

Linux (and its close relation Unix) and Windows 2003 (and its close cousin Windows NT) are types of software (known as operating systems) that web servers use to do the kind of things that web s…

07 Sep 2014

POP, IMAP, and SMTP server settings for Gmail

<em>Make sure to enable POP/IMAP access in your Gmail settings first.</em><br>

<h1>
POP</h1>
<b>Standard configuration instructions:<span id="more-311882093"></span></b><br>

<table border="1" cellpadding="0" cellspacing="0">
<tbody>
<tr>
<td><b>Incoming Mail (POP3) Server – requires SSL:</b></td>
<td>pop.gmail.com<br>
<b>Use SSL</b>: Yes<br>
<b>Port</b>: 995</td>
</tr>
<tr>
<td><b>Outgoing Mail (SMTP) Server – requires TLS or SSL:</b></td>
<td>smtp.gmail.com<br>
<b>Use Authentication</b>: Yes<br>
<b>Port for TLS/STARTTLS</b>: 587<br>
<b>Port for SSL</b>: 465</td>
</tr>
<tr>
<td><b>Server timeouts</b></td>
<td>Greater than 1 minute, we recommend 5</td>
</tr>
<tr>
<td><b>Full Name or Display Name:</b></td>
<td>[your name]</td>
</tr>
<tr>
<td><b>Account Name or User Name:</b></td>
<td>your full email address (including @gmail.com or @your_domain.com)</td>
</tr>
<tr>
<td><b>Email Address:</b></td>
<td>your email address (username@gmail.com or username@your_domain.com)</td>
</tr>
<tr>
<td><b>Password:</b></td>
<td>your Gmail password</td>
</tr>
</tbody>
</table>
<br>

POP, IMAP, and SMTP server settings for Gmail

Make sure to enable POP/IMAP access in your Gmail settings first. POP Standard configuration instructions: Incoming Mail (POP3) Server – requires SSL: pop.gmail.com Use SSL: Yes Port: 995 Outgoing Mai…

09 Jun 2014

Hotmail: IMAP, POP3, and SMTP settings

Hotmail: IMAP, POP3, and SMTP settings

Hotmail supports access via IMAP, POP3 and SMTP protocols. Below you can find the configuration settings for those protocols. All Hotmail servers (POP3 and SMTP) use implicit SSL (use ConnectSSL metho…

09 Jun 2014

Controlling DNS prefetching

Controlling DNS prefetching

As of version 3.5, Firefox supports DNS prefetching. This is a feature by which Firefox proactively performs domain name resolution on both links that the user may choose to follow as well as URLs fo…

08 Jun 2014

Heartbleed bug: What you need to know

<div class="separator" style="clear: both; text-align: center;">
<a href="http://upload.wikimedia.org/wikipedia/commons/thumb/d/dc/Heartbleed.svg/411px-Heartbleed.svg.png" imageanchor="1" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><span style="font-family: Arial, Helvetica, sans-serif;"><img border="0" height="320" src="http://upload.wikimedia.org/wikipedia/commons/thumb/d/dc/Heartbleed.svg/411px-Heartbleed.svg.png" width="255" /></span></a></div>
<span style="font-family: Arial, Helvetica, sans-serif;">The Heartbleed Bug is a serious vulnerability in the popular OpenSSL cryptographic software library. This weakness allows stealing the information protected, under normal conditions, by the SSL/TLS encryption used to secure it.</span><br />
<span style="font-family: Arial, Helvetica, sans-serif;"><br /></span>
<span style="font-family: Arial, Helvetica, sans-serif;">You are likely affected if you configured and run an SSL-enabled website, meaning that you can access it using the https:// prefix instead of http://. You will need to patch the libraries in your system and replace the certificates and keys that may have been compromised. Please notice that remote access using ssh is NOT affected.</span><br />
<span style="font-family: Arial, Helvetica, sans-serif;"><br /></span>
<span style="font-family: Arial, Helvetica, sans-serif;">OpenSSL versions from 1.0.1 through 1.0.1f (inclusive) are vulnerable and make it possible to steal information, including everything from the encrypted content and to the secret key used for the encryption. The attack is also indetectable.</span><br />
<span style="font-family: Arial, Helvetica, sans-serif;"><br /></span>
<span style="font-family: Arial, Helvetica, sans-serif;">This security issue has been described in detail on the following page:</span><br />
<a href="http://heartbleed.com/" target="_blank"><span style="font-family: Arial, Helvetica, sans-serif;">http://heartbleed.com/</span></a><br />
<span style="font-family: Arial, Helvetica, sans-serif;"><br /></span>
<br />
<h2>
<span style="font-family: Arial, Helvetica, sans-serif; font-size: large;">How about operating systems?</span></h2>
<div>
<div class="separator" style="clear: both; text-align: center;">
</div>
<div style="background-color: white; box-sizing: border-box; color: #222222; line-height: 28.571430206298828px; margin-bottom: 10px;">
<span style="font-family: Arial, Helvetica, sans-serif;">Some operating system distributions that have shipped with potentially vulnerable OpenSSL version:</span></div>
<ul style="background-color: white; box-sizing: border-box; color: #222222; line-height: 28.571430206298828px; margin-bottom: 10px; margin-top: 0px;">
<li style="box-sizing: border-box;"><span style="font-family: Arial, Helvetica, sans-serif;">Debian Wheezy (stable), OpenSSL 1.0.1e-2+deb7u4</span></li>
</ul>
<ul style="background-color: white; box-sizing: border-box; color: #222222; line-height: 28.571430206298828px; margin-bottom: 10px; margin-top: 0px;">
<li style="box-sizing: border-box;"><span style="font-family: Arial, Helvetica, sans-serif;">Ubuntu 12.04.4 LTS, OpenSSL 1.0.1-4ubuntu5.11</span></li>
</ul>
<ul style="background-color: white; box-sizing: border-box; color: #222222; line-height: 28.571430206298828px; margin-bottom: 10px; margin-top: 0px;">
<li style="box-sizing: border-box;"><span style="font-family: Arial, Helvetica, sans-serif;">CentOS 6.5, OpenSSL 1.0.1e-15</span></li>
</ul>
<ul style="background-color: white; box-sizing: border-box; color: #222222; line-height: 28.571430206298828px; margin-bottom: 10px; margin-top: 0px;">
<li style="box-sizing: border-box;"><span style="font-family: Arial, Helvetica, sans-serif;">Fedora 18, OpenSSL 1.0.1e-4</span></li>
</ul>
<ul style="background-color: white; box-sizing: border-box; color: #222222; line-height: 28.571430206298828px; margin-bottom: 10px; margin-top: 0px;">
<li style="box-sizing: border-box;"><span style="font-family: Arial, Helvetica, sans-serif;">OpenBSD 5.3 (OpenSSL 1.0.1c 10 May 2012) and 5.4 (OpenSSL 1.0.1c 10 May 2012)</span></li>
</ul>
<ul style="background-color: white; box-sizing: border-box; color: #222222; line-height: 28.571430206298828px; margin-bottom: 10px; margin-top: 0px;">
<li style="box-sizing: border-box;"><span style="font-family: Arial, Helvetica, sans-serif;">FreeBSD 10.0 - OpenSSL 1.0.1e 11 Feb 2013</span></li>
</ul>
<ul style="background-color: white; box-sizing: border-box; color: #222222; line-height: 28.571430206298828px; margin-bottom: 10px; margin-top: 0px;">
<li style="box-sizing: border-box;"><span style="font-family: Arial, Helvetica, sans-serif;">NetBSD 5.0.2 (OpenSSL 1.0.1e)</span></li>
</ul>
<ul style="background-color: white; box-sizing: border-box; color: #222222; line-height: 28.571430206298828px; margin-bottom: 10px; margin-top: 0px;">
<li style="box-sizing: border-box;"><span style="font-family: Arial, Helvetica, sans-serif;">OpenSUSE 12.2 (OpenSSL 1.0.1c)</span></li>
</ul>
<span style="font-family: Arial, Helvetica, sans-serif;">Operating system distribution with versions that are not vulnerable:</span><br />
<ul style="background-color: white; box-sizing: border-box; color: #222222; line-height: 28.571430206298828px; margin-bottom: 10px; margin-top: 0px;">
<li style="box-sizing: border-box;"><span style="font-family: Arial, Helvetica, sans-serif;">Debian Squeeze (oldstable), OpenSSL 0.9.8o-4squeeze14</span></li>
</ul>
<ul style="background-color: white; box-sizing: border-box; color: #222222; line-height: 28.571430206298828px; margin-bottom: 10px; margin-top: 0px;">
<li style="box-sizing: border-box;"><span style="font-family: Arial, Helvetica, sans-serif;">SUSE Linux Enterprise Server</span></li>
</ul>
<ul style="background-color: white; box-sizing: border-box; color: #222222; line-height: 28.571430206298828px; margin-bottom: 10px; margin-top: 0px;">
<li style="box-sizing: border-box;"><span style="font-family: Arial, Helvetica, sans-serif;">FreeBSD 8.4 - OpenSSL 0.9.8y 5 Feb 2013</span></li>
</ul>
<ul style="background-color: white; box-sizing: border-box; color: #222222; line-height: 28.571430206298828px; margin-bottom: 10px; margin-top: 0px;">
<li style="box-sizing: border-box;"><span style="font-family: Arial, Helvetica, sans-serif;">FreeBSD 9.2 - OpenSSL 0.9.8y 5 Feb 2013</span></li>
</ul>
<ul style="background-color: white; box-sizing: border-box; color: #222222; line-height: 28.571430206298828px; margin-bottom: 10px; margin-top: 0px;">
<li style="box-sizing: border-box;"><span style="font-family: Arial, Helvetica, sans-serif;">FreeBSD 10.0p1 - OpenSSL 1.0.1g (At 8 Apr 18:27:46 2014 UTC)</span></li>
</ul>
<ul style="background-color: white; box-sizing: border-box; color: #222222; line-height: 28.571430206298828px; margin-bottom: 10px; margin-top: 0px;">
<li style="box-sizing: border-box;"><span style="font-family: Arial, Helvetica, sans-serif;">FreeBSD Ports - OpenSSL 1.0.1g (At 7 Apr 21:46:40 2014 UTC)</span></li>
</ul>
</div>
<h2>
<span style="font-family: Arial, Helvetica, sans-serif; font-size: large;">
Detect if your machine is vulnerable.</span></h2>
<div>
<div style="background-color: white; line-height: 19.200000762939453px; margin-top: 0.75em; padding: 0px;">
<div class="separator" style="clear: both; text-align: center;">
<a href="http://upload.wikimedia.org/wikipedia/commons/thumb/c/cb/Heartbleed_bug_explained.svg/554px-Heartbleed_bug_explained.svg.png" imageanchor="1" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img border="0" height="180" src="http://upload.wikimedia.org/wikipedia/commons/thumb/c/cb/Heartbleed_bug_explained.svg/554px-Heartbleed_bug_explained.svg.png" width="320" /></a></div>
<span style="font-family: Arial, Helvetica, sans-serif;">If you are running a web server with SSL enabled, you can test whether it is vulnerable with this tool:</span></div>
<div style="background-color: white; line-height: 19.200000762939453px; margin-top: 0.75em; padding: 0px;">
<a href="https://filippo.io/Heartbleed/#ezadblog.my" rel="nofollow" target="_blank"><span style="font-family: Arial, Helvetica, sans-serif;">http://filippo.io/Heartbleed/</span></a></div>
<div style="background-color: white; line-height: 19.200000762939453px; margin-top: 0.75em; padding: 0px;">
<span style="font-family: Arial, Helvetica, sans-serif;">Alternatively, to detect if your machine is vulnerable to this bug, please log into your servers and check the OpenSSL version by executing the  below command:</span></div>
<pre style="background-color: #fefefe; border-left-color: rgb(170, 170, 170); border-left-style: solid; border-left-width: 4px; color: #777777; line-height: 19.200000762939453px; margin-left: 1em; margin-top: 0.75em; overflow: auto; padding: 0px 0px 0px 1em;"><span style="font-family: Arial, Helvetica, sans-serif;">openssl version -a</span></pre>
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</div>
<div style="background-color: white; line-height: 19.200000762939453px; margin-top: 0.75em; padding: 0px;">
<span style="font-family: Arial, Helvetica, sans-serif;">If the version in the output is greater or <span style="color: red;"><strong>equal to "1.0.1" and lower or equal to "1.0.1f "</strong></span>, you may be affected. An example of an affected version would be:</span></div>
<pre style="background-color: #fefefe; border-left-color: rgb(170, 170, 170); border-left-style: solid; border-left-width: 4px; color: #777777; line-height: 19.200000762939453px; margin-left: 1em; margin-top: 0.75em; overflow: auto; padding: 0px 0px 0px 1em;"><span style="font-family: Arial, Helvetica, sans-serif;">$> openssl version -a
OpenSSL <span style="color: red;"><strong>1.0.1</strong></span> 14 Mar 2012
built on: Wed Jan  8 20:45:51 UTC 2014
platform: debian-amd64
</span></pre>
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</div>
<div style="background-color: white; line-height: 19.200000762939453px; margin-top: 0.75em; padding: 0px;">
<span style="font-family: Arial, Helvetica, sans-serif;">Please note the version mentioned: "1.0.1", which is in the range of affected versions. Another detail to check is the "built on" information:</span></div>
<pre style="background-color: #fefefe; border-left-color: rgb(170, 170, 170); border-left-style: solid; border-left-width: 4px; color: #777777; line-height: 19.200000762939453px; margin-left: 1em; margin-top: 0.75em; overflow: auto; padding: 0px 0px 0px 1em;"><span style="font-family: Arial, Helvetica, sans-serif;">$> openssl version -a
...
built on: <span style="color: red;"><strong>Wed Jan  8 20:45:51 UTC 2014</strong></span>
...</span></pre>
<div style="background-color: white; line-height: 19.200000762939453px; margin-top: 0.75em; padding: 0px;">
<span style="font-family: Arial, Helvetica, sans-serif;"><br /></span></div>
<div style="background-color: white; line-height: 19.200000762939453px; margin-top: 0.75em; padding: 0px;">
<span style="font-family: Arial, Helvetica, sans-serif;">Some Linux distributions have provided security patches that fix the vulnerability without upgrading OpenSSL. The "built on:" date should be <span style="color: green;"><strong>newer or equal to April 2014</strong> </span>to consider it updated. An example of patched OpenSSL version would be:</span></div>
<div style="background-color: white; line-height: 19.200000762939453px; margin: 0px; padding: 0px;">
<pre style="background-color: #fefefe; border-left-color: rgb(170, 170, 170); border-left-style: solid; border-left-width: 4px; color: #777777; margin-left: 1em; margin-top: 0.75em; overflow: auto; padding: 0px 0px 0px 1em;"><span style="font-family: Arial, Helvetica, sans-serif;">/usr/bin/openssl version -a
OpenSSL <strong>1.0.1</strong> 14 Mar 2012
built on: <span style="color: green;"><strong>Mon Apr  7 20:33:29 UTC 2014</strong></span>
platform: debian-amd64
</span></pre>
</div>
<div style="background-color: white; line-height: 19.200000762939453px; margin: 0px; padding: 0px;">
</div>
<div style="background-color: white; line-height: 19.200000762939453px; margin: 0px; padding: 0px;">
<span style="font-family: Arial, Helvetica, sans-serif;">Where the OpenSSL is in the vulnerable range but it was patched on April 2014:</span></div>
<div style="background-color: white; line-height: 19.200000762939453px; margin: 0px; padding: 0px;">
</div>
<div style="background-color: white; line-height: 19.200000762939453px; margin: 0px; padding: 0px;">
<span style="font-family: Arial, Helvetica, sans-serif;">Another non-vulnerable version (this one, easier to identify) will look like:</span></div>
<div style="background-color: white; line-height: 19.200000762939453px; margin: 0px; padding: 0px;">
<pre style="background-color: #fefefe; border-left-color: rgb(170, 170, 170); border-left-style: solid; border-left-width: 4px; color: #777777; margin-left: 1em; margin-top: 0.75em; overflow: auto; padding: 0px 0px 0px 1em;"><span style="font-family: Arial, Helvetica, sans-serif;">openssl version -a
OpenSSL <strong><span style="color: green;">1.0.1g</span></strong> 7 Apr 2014
built on: Tue Apr  8 09:07:07 CEST 2014
platform: linux-x86_64
</span></pre>
</div>
<div style="background-color: white; margin: 0px; padding: 0px;">
<div style="line-height: 19.200000762939453px; margin: 0px; padding: 0px;">
</div>
<div style="margin: 0px; padding: 0px;">
<div style="line-height: 19.200000762939453px;">
<span style="font-family: Arial, Helvetica, sans-serif;">Where the version is greater than "1.0.1f", so it is safe. It also shows it was updated in April 2014. This is the output you will get if you use our patch installer to update your SSL version</span></div>
<div style="line-height: 19.200000762939453px;">
<span style="font-family: Arial, Helvetica, sans-serif;"><br /></span></div>
<h2>
<span style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><span style="line-height: 19.200000762939453px;">Update the system OpenSSL version</span></span></h2>
<div>
<div style="margin: 0px; padding: 0px;">
<div id="section_7" style="margin: 0px; padding: 0px;">
<div style="line-height: 19.200000762939453px; margin: 0px; padding: 0px;">
<span style="font-family: Arial, Helvetica, sans-serif;">The procedure to update the system OpenSSL package will depend on you Linux distribution:</span></div>
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</div>
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<strong><span style="font-family: Arial, Helvetica, sans-serif;"> apt-based systems: Ubuntu, Debian...</span></strong></div>
<div style="line-height: 19.200000762939453px; margin: 0px; padding: 0px;">
</div>
<pre style="background-color: #fefefe; border-left-color: rgb(170, 170, 170); border-left-style: solid; border-left-width: 4px; color: #777777; line-height: 19.200000762939453px; margin-left: 1em; margin-top: 0.75em; overflow: auto; padding: 0px 0px 0px 1em;"><span style="font-family: Arial, Helvetica, sans-serif;">sudo apt-get update
sudo apt-get install -y libssl1.0.0 openssl</span></pre>
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</div>
<div style="line-height: 19.200000762939453px; margin: 0px; padding: 0px;">
<span style="font-family: Arial, Helvetica, sans-serif;">And then check that the version was updated (or patched, with a recent "built on" date):</span></div>
<div style="line-height: 19.200000762939453px; margin: 0px; padding: 0px;">
</div>
<pre style="background-color: #fefefe; border-left-color: rgb(170, 170, 170); border-left-style: solid; border-left-width: 4px; color: #777777; line-height: 19.200000762939453px; margin-left: 1em; margin-top: 0.75em; overflow: auto; padding: 0px 0px 0px 1em;"><span style="font-family: Arial, Helvetica, sans-serif;">/usr/bin/openssl version -a
OpenSSL 1.0.1 14 Mar 2012
built on: <span style="color: green;"><strong>Mon Apr  7 20:33:29 UTC 2014</strong></span>
...</span></pre>
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</div>
<div style="line-height: 19.200000762939453px; margin: 0px; padding: 0px;">
<span style="font-family: Arial, Helvetica, sans-serif;">You will also need to restart any service using libssl. To check the list of those services, you could use the below command:</span></div>
<div style="line-height: 19.200000762939453px; margin: 0px; padding: 0px;">
</div>
<pre style="background-color: #fefefe; border-left-color: rgb(170, 170, 170); border-left-style: solid; border-left-width: 4px; color: #777777; line-height: 19.200000762939453px; margin-left: 1em; margin-top: 0.75em; overflow: auto; padding: 0px 0px 0px 1em;"><span style="font-family: Arial, Helvetica, sans-serif;">sudo lsof -n | grep ssl | grep DEL
vsftpd     479   root  DEL  REG     202,1         394910 /lib/x86_64-linux-gnu/libssl.so.1.0.0
monit     1254   root  DEL  REG     202,1         394910 /lib/x86_64-linux-gnu/libssl.so.1.0.0</span></pre>
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</div>
<div style="line-height: 19.200000762939453px; margin: 0px; padding: 0px;">
<span style="font-family: Arial, Helvetica, sans-serif;">And then restart the services (depending on your specific system):</span></div>
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</div>
<pre style="background-color: #fefefe; border-left-color: rgb(170, 170, 170); border-left-style: solid; border-left-width: 4px; color: #777777; line-height: 19.200000762939453px; margin-left: 1em; margin-top: 0.75em; overflow: auto; padding: 0px 0px 0px 1em;"><span style="font-family: Arial, Helvetica, sans-serif;">sudo /etc/init.d/monit restart
sudo /etc/init.d/vsftpd restart</span></pre>
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</div>
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</div>
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<strong><span style="font-family: Arial, Helvetica, sans-serif;">yum-base systems: RedHat, CentOS, Fedora...</span></strong></div>
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</div>
<pre style="background-color: #fefefe; border-left-color: rgb(170, 170, 170); border-left-style: solid; border-left-width: 4px; color: #777777; line-height: 19.200000762939453px; margin-left: 1em; margin-top: 0.75em; overflow: auto; padding: 0px 0px 0px 1em;"><span style="font-family: Arial, Helvetica, sans-serif;">sudo yum -y update openssl</span></pre>
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</div>
<div style="line-height: 19.200000762939453px; margin: 0px; padding: 0px;">
<span style="font-family: Arial, Helvetica, sans-serif;">And then check that the version was updated (or patched, with a recent "built on" date):</span></div>
<div style="line-height: 19.200000762939453px; margin: 0px; padding: 0px;">
</div>
<pre style="background-color: #fefefe; border-left-color: rgb(170, 170, 170); border-left-style: solid; border-left-width: 4px; color: #777777; line-height: 19.200000762939453px; margin-left: 1em; margin-top: 0.75em; overflow: auto; padding: 0px 0px 0px 1em;"><span style="font-family: Arial, Helvetica, sans-serif;">/usr/bin/openssl version -a
OpenSSL 1.0.1 14 Mar 2012
built on: <span style="color: green;"><strong>Mon Apr  7 20:33:29 UTC 2014</strong></span>
...</span></pre>
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</div>
<div style="line-height: 19.200000762939453px; margin: 0px; padding: 0px;">
<span style="font-family: Arial, Helvetica, sans-serif;">You will also need to restart any service using libssl. To check the list of those services, you could use the below command:</span></div>
<div style="line-height: 19.200000762939453px; margin: 0px; padding: 0px;">
</div>
<pre style="background-color: #fefefe; border-left-color: rgb(170, 170, 170); border-left-style: solid; border-left-width: 4px; color: #777777; line-height: 19.200000762939453px; margin-left: 1em; margin-top: 0.75em; overflow: auto; padding: 0px 0px 0px 1em;"><span style="font-family: Arial, Helvetica, sans-serif;">sudo lsof -n | grep ssl | grep DEL
vsftpd     479   root  DEL  REG     202,1         394910 /lib/x86_64-linux-gnu/libssl.so.1.0.0
monit     1254   root  DEL  REG     202,1         394910 /lib/x86_64-linux-gnu/libssl.so.1.0.0</span></pre>
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</div>
<div style="line-height: 19.200000762939453px; margin: 0px; padding: 0px;">
<span style="font-family: Arial, Helvetica, sans-serif;">And then restart the services (depending on your specific system):</span></div>
<div style="line-height: 19.200000762939453px; margin: 0px; padding: 0px;">
</div>
<pre style="background-color: #fefefe; border-left-color: rgb(170, 170, 170); border-left-style: solid; border-left-width: 4px; color: #777777; line-height: 19.200000762939453px; margin-left: 1em; margin-top: 0.75em; overflow: auto; padding: 0px 0px 0px 1em;"><span style="font-family: Arial, Helvetica, sans-serif;">sudo /etc/init.d/monit restart
sudo /etc/init.d/vsftpd restart
</span></pre>
<div style="line-height: 19.200000762939453px;">
<span style="font-family: Arial, Helvetica, sans-serif;"><br /></span></div>
<h2>
<span style="font-family: Arial, Helvetica, sans-serif; font-size: large;"><span style="line-height: 19.200000762939453px;">Next Steps</span></span></h2>
<div>
<div style="line-height: 19.200000762939453px; margin-top: 0.75em; padding: 0px;">
<strong><span style="font-family: Arial, Helvetica, sans-serif;">First, after apllying the patches above, double-check whether your web site is ok now using this tool:</span></strong></div>
<div style="line-height: 19.200000762939453px; margin-top: 0.75em; padding: 0px;">
<a href="https://filippo.io/Heartbleed/#ezadblog.my" rel="nofollow" target="_blank"><span style="font-family: Arial, Helvetica, sans-serif;">http://filippo.io/Heartbleed</span></a></div>
<div style="margin-top: 0.75em; padding: 0px;">
<span style="line-height: 19.200000762939453px;"><span style="font-family: Arial, Helvetica, sans-serif;">The vulnerability allows an attacker to steal you private keys, which would allow it to decrypt any information, as well as impersonating your server so it is advised to revoke the compromised keys and reissuing and redistributing new ones.</span></span></div>
<div style="margin-top: 0.75em; padding: 0px;">
<br /></div>
<div style="margin-top: 0.75em; padding: 0px;">
<span style="line-height: 19.200000762939453px;"><span style="font-family: Arial, Helvetica, sans-serif;">This is only necessary if you already configured HTTPS with your own certificate. In this case regenerate new certificates and configure them again in your server.</span></span></div>
</div>
</div>
</div>
<div style="font-family: 'Lucida Grande', Verdana, Arial, sans-serif; font-size: 12px; line-height: 19.200000762939453px; margin: 0px; padding: 0px;">
</div>
</div>
</div>
</div>
</div>

Heartbleed bug: What you need to know

The Heartbleed Bug is a serious vulnerability in the popular OpenSSL cryptographic software library. This weakness allows stealing the information protected, under normal conditions, by the SSL/TLS e…

14 Apr 2014

How to detect operating system using user agent

In computing, a user agent is software (a software agent) that is acting on behalf of a user. For example, an email reader is a mail user agent, and in the Session Initiation Protocol (SIP), the term user agent refers to both end points of a communications session.<br />
<br />
In many cases, a user agent acts as a client in a network protocol used in communications within a client–server distributed computing system. In particular, the Hypertext Transfer Protocol (HTTP) identifies the client software originating the request, using a "User-Agent" header, even when the client is not operated by a user.<br />
<br />
<h1>
Standard User Agent browser</h1>
Most Web browsers use a User-Agent value as follows: <i>Mozilla/[version] ([system and browser information]) [platform] ([platform details]) [extensions]</i>. For example, Safari on the iPad has used the following:<br />
<br />
<pre>Mozilla/5.0 (iPad; U; CPU OS 3_2_1 like Mac OS X; en-us) AppleWebKit/531.21.10 
(KHTML, like Gecko)Mobile/7B405</pre>
The components of this string are as follows:<br />
<ul>
<li><i>Mozilla/5.0</i>: Previously used to indicate compatibility with the Mozilla rendering engine</li>
<li><i>(iPad; U; CPU OS 3_2_1 like Mac OS X; en-us)</i>: Details of the system in which the browser is running</li>
<li><i>AppleWebKit/531.21.10</i>: The platform the browser uses</li>
<li><i>(KHTML, like Gecko)</i>: Browser platform details</li>
<li><i>Mobile/7B405</i>: This is used by the browser to indicate 
specific enhancements that are available directly in the browser or 
through third parties. An example of this is Microsoft Live Meeting 
which registers an extension so that the Live Meeting service knows if 
the software is already installed, which means it can provide a 
streamlined experience to joining meetings.</li>
</ul>
Notable exceptions include Opera, which is a web browser, but does not include Mozilla in its User-Agent string.<br />
<br />
<h1>
Window User Agent</h1>
<pre>Mozilla/5.0 (Windows NT 5.1; rv:5.0) Gecko/20100101 Firefox/5.0</pre>
<ul>
<li><i>Windows NT 5.1; </i>: Window XP operating system as platform</li>
<li><i>Firefox/5.0</i>: Mozilla Firefox version 5.0 as a browser</li>
</ul>
<br />
<pre>Mozilla/5.0 (Windows NT 6.0) AppleWebKit/535.2 (KHTML, like Gecko) Chrome/15.0.874.120 
Safari/535.2</pre>
<ul>
<li><i>Windows NT 6.0</i>: Window Vista operating system as platform</li>
<li><i>Chrome/15.0.874.120</i>: Google chrome version 15.0.874.120 as a browser</li>
</ul>
<br />
<pre>Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.1; WOW64; Trident/6.0)</pre>
<ul>
<li><i>Windows NT 6.1</i>: Window 7 operating system as platform</li>
<li><i>MSIE 10.0</i>: Internet explorer version 10 as a browser</li>
<li><i>WOW64;</i>: A 32-bit window application is running on a 64-bit processor</li>
</ul>
<br />
<pre>Mozilla/5.0 (Windows; U; Windows NT 6.2; en-US) AppleWebKit/533.20.25 (KHTML, like Gecko)
Version/5.0.4 Safari/533.20.27</pre>
<ul>
<li><i>Windows NT 6.2</i>: Window 8 operating system as platform</li>
<li><i>Version/5.0.4 Safari/533.20.27</i>: Safari version 5.0.4 as a browser</li>
<li><i>U;</i>: Security value (N for no security, U for strong security, I for weak security)</li>
</ul>

How to detect operating system using user agent

11 Dec 2013

How your Browser Speeds up Cross Domain Loading using DNS Prefetching

<strong>How it Works</strong><br>
What DNS prefetching does is attempt to resolve domain names before 
we, the  users, try to follow a link. This is accomplished using the 
computer's built-in  DNS resolution mechanism. Once a domain name has 
been resolved, if we do  navigate to that domain, there will be no 
effective delay due to DNS resolution  time. While downloading speed 
remains the same, looking up the IP address before  hand will save you 
an easily perceptible second or two when going from page to  page. A 
good example where DNS prefetching can really help is when a user is  
looking at a page with many links to various domains, such as a search 
results  page. When the browser encounters an a hyperlink that does not 
share the same  domain name as the current location, it first checks its
 cache and then, lacking  a cached copy, resolves the domain to the 
associated IP address through a  request from a DNS server. These 
requests happen in the background so as to not  block the rendering of 
the page. Moreover, since all this takes place in  parallel with the 
user's reading of the page, it places only a negligible load  on CPU and
 network resources. How much navigation time will a user save can  range
 from an average savings of about 200 milliseconds for non-cached 
content,  to one to two seconds for the worst DNS resolution delays.<br>
By default, prefetching of embedded link hostnames is not performed 
on  documents loaded over HTTPS. You can change this by setting the  
network.dns.disablePrefetchFromHTTPS browser preference to false.<br>
<br>

How your Browser Speeds up Cross Domain Loading using DNS Prefetching

How it Works What DNS prefetching does is attempt to resolve domain names before we, the users, try to follow a link. This is accomplished using the computer's built-in DNS resolution mechanism. O…

26 Nov 2013

Wireless Threats: Is Your Broadband Secure Enough?

<div class="MsoNormal">
Internet use in Malaysia is at an all-time high and is still
growing, and broadband adoption is rapidly spreading along with mobile
connectivity. In this environment of increasing digital interconnection,
security threats are likewise growing in number.<o:p></o:p></div>
<div class="MsoNormal">
As an active broadband user, you at least need to know the
threats and the preventive measures available to pre-empt them.<o:p></o:p></div>
<h2>
Increased Risk, Improved Security<o:p></o:p></h2>
<div class="MsoNormal">
Findings from industry leaders and research institutions
like Alcatel-Lucent are showing signs of an increased number of security
threats to broadband networks, both fixed and mobile. Data points out that the
wireless threat trend is growing with telling statistics, including:<o:p></o:p></div>
<div class="MsoNormalCxSpMiddle" style="margin-bottom: .0001pt; margin-bottom: 0in; margin-left: .5in; margin-right: 0in; margin-top: 0in; mso-add-space: auto; mso-list: l3 level1 lfo4; text-indent: -17.95pt;">
<span style="font-family: "Arial","sans-serif"; mso-fareast-font-family: Arial;">●<span style="font-family: 'Times New Roman'; font-size: 7pt;">     </span></span><span dir="LTR"></span>10% of home networks have been infected by Malware in the second
quarter of 2013<o:p></o:p></div>
<div class="MsoNormalCxSpMiddle" style="margin-bottom: .0001pt; margin-bottom: 0in; margin-left: .5in; margin-right: 0in; margin-top: 0in; mso-add-space: auto; mso-list: l3 level1 lfo4; text-indent: -17.95pt;">
<span style="font-family: "Arial","sans-serif"; mso-fareast-font-family: Arial;">●<span style="font-family: 'Times New Roman'; font-size: 7pt;">     </span></span><span dir="LTR"></span>6% of home networks were shown to exhibit high-level security
threats, including rootkits and Trojan banking viruses<o:p></o:p></div>
<div class="MsoNormalCxSpMiddle" style="margin-left: .5in; mso-add-space: auto; mso-list: l3 level1 lfo4; text-indent: -17.95pt;">
<span style="font-family: "Arial","sans-serif"; mso-fareast-font-family: Arial;">●<span style="font-family: 'Times New Roman'; font-size: 7pt;">    
</span></span><span dir="LTR"></span>0.5% of mobile were invaded
by Malware in the second quarter of 2013<o:p></o:p></div>
<div class="MsoNormal">
Compared to data from the previous quarter, the numbers
indicate a rise in threats to broadband networks. The research was conducted in
Europe, but the same analysis would apply especially for a boisterous and
dynamic market full of technologically-agile users like Asia.<o:p></o:p></div>
<div class="MsoNormal">
These security threats are being used by hackers to perform
illicit activities ranging from the simply annoying, like spamming, to the
devastatingly dangerous, like personal identification theft and espionage.<o:p></o:p></div>
<h2>
Broadband Gateways<o:p></o:p></h2>
<div class="MsoNormal">
Broadband networks are 500% more prone to security threats
compared to other forms of internet connectivity, including dial-up. Hackers
typically perform three general activities when breaking into wireless
networks:<o:p></o:p></div>
<div class="MsoNormalCxSpMiddle" style="margin-bottom: .0001pt; margin-bottom: 0in; margin-left: .5in; margin-right: 0in; margin-top: 0in; mso-add-space: auto; mso-list: l1 level1 lfo3; text-indent: -17.95pt;">
<span style="font-family: "Arial","sans-serif"; mso-fareast-font-family: Arial;">●<span style="font-family: 'Times New Roman'; font-size: 7pt;">     </span></span><span dir="LTR"></span>Use them as stepping stones to perform more attacks<o:p></o:p></div>
<div class="MsoNormalCxSpMiddle" style="margin-bottom: .0001pt; margin-bottom: 0in; margin-left: .5in; margin-right: 0in; margin-top: 0in; mso-add-space: auto; mso-list: l1 level1 lfo3; text-indent: -17.95pt;">
<span style="font-family: "Arial","sans-serif"; mso-fareast-font-family: Arial;">●<span style="font-family: 'Times New Roman'; font-size: 7pt;">     </span></span><span dir="LTR"></span>Use them to store illegal copies of software or digital goods<o:p></o:p></div>
<div class="MsoNormalCxSpMiddle" style="margin-left: .5in; mso-add-space: auto; mso-list: l1 level1 lfo3; text-indent: -17.95pt;">
<span style="font-family: "Arial","sans-serif"; mso-fareast-font-family: Arial;">●<span style="font-family: 'Times New Roman'; font-size: 7pt;">    
</span></span><span dir="LTR"></span>Launch waves of unsolicited
activities (spamming, illegal information collection, et al)<o:p></o:p></div>
<div class="MsoNormal">
Malware, viruses, and hackers share the same “gateways” to
attack your broadband connection or network. Some of the most common entryways
include:<o:p></o:p></div>
<div class="MsoNormalCxSpMiddle" style="margin-bottom: .0001pt; margin-bottom: 0in; margin-left: .5in; margin-right: 0in; margin-top: 0in; mso-add-space: auto; mso-list: l2 level1 lfo2; text-indent: -17.95pt;">
<span style="font-family: "Arial","sans-serif"; mso-fareast-font-family: Arial;">●<span style="font-family: 'Times New Roman'; font-size: 7pt;">     </span></span><span dir="LTR"></span><b>Phishing</b> – Ever
received a suspicious email claiming to be from your bank, asking for personal
information? Phishing is nearly as old as email itself, but modern variations
can be very complex, making it difficult for the layman to see it for what it
is. Some phishing setups even buy official-sounding domain names and setup
email addresses from them and then contact people.<o:p></o:p></div>
<div class="MsoNormalCxSpMiddle" style="margin-bottom: .0001pt; margin-bottom: 0in; margin-left: .5in; margin-right: 0in; margin-top: 0in; mso-add-space: auto; mso-list: l2 level1 lfo2; text-indent: -17.95pt;">
<span style="font-family: "Arial","sans-serif"; mso-fareast-font-family: Arial;">●<span style="font-family: 'Times New Roman'; font-size: 7pt;">     </span></span><span dir="LTR"></span><b>Cookies</b> – Cookies are
your browser’s way to track your internet surfing activities to make sure it
keeps your preferences for websites you visit regularly. Unfortunately, because
cookies can store information like passwords and other similarly telling data
on your activities and behaviour online, they are also usually targeted by
hackers.<o:p></o:p></div>
<div class="MsoNormalCxSpMiddle" style="margin-bottom: .0001pt; margin-bottom: 0in; margin-left: .5in; margin-right: 0in; margin-top: 0in; mso-add-space: auto; mso-list: l2 level1 lfo2; text-indent: -17.95pt;">
<span style="font-family: "Arial","sans-serif"; mso-fareast-font-family: Arial;">●<span style="font-family: 'Times New Roman'; font-size: 7pt;">     </span></span><span dir="LTR"></span><b>Spyware, adware, malware</b>
– All of these virus-ware are designed with devious endeavors: spyware spies on
your computer activities, adware collects information on your behaviour online
so it can spam you with ads, and malware is generally any piece of code intent
on causing harm to your computer in any way. All of these can be gateways into
your broadband network.<o:p></o:p></div>
<div class="MsoNormalCxSpMiddle" style="margin-left: .5in; mso-add-space: auto; mso-list: l2 level1 lfo2; text-indent: -17.95pt;">
<span style="font-family: "Arial","sans-serif"; mso-fareast-font-family: Arial;">●<span style="font-family: 'Times New Roman'; font-size: 7pt;">    
</span></span><span dir="LTR"></span><b>Ports</b> – Your computer interfaces with other devices connected to it
via “ports,” and a single computer can have thousands of ports. A good number
of them connect to your network, and each one is a vulnerability that can
potentially be taken advantage of.<o:p></o:p></div>
<div class="MsoNormal">
These are just a handful of examples, and hackers are
usefully ready to exploit them all and more to get what they want.<o:p></o:p></div>
<h2>
Implementing Measures for Tighter Wireless Security<o:p></o:p></h2>
<div class="MsoNormal">
It’s not all hopeless, gloom, and doom for your broadband
network. Your firewall, your anti-virus, and the individual efforts implemented
by your trusted websites and service providers all counter and pre-empt any
malicious attempts to compromise your network or your computer.<o:p></o:p></div>
<div class="MsoNormal">
For your part, the first step is to arm yourself with
knowledge on how these wireless threats affect you, and how they work, so you
can prepare properly. If you know how a phishing scam works you’re less likely
to be victimized, right?<o:p></o:p></div>
<div class="MsoNormal">
Beyond that, however, there are always best practices you
can adhere to so you can ensure that you are part of the fight against these
wireless broadband threats:<o:p></o:p></div>
<div class="MsoNormalCxSpMiddle" style="margin-bottom: .0001pt; margin-bottom: 0in; margin-left: .5in; margin-right: 0in; margin-top: 0in; mso-add-space: auto; mso-list: l0 level1 lfo1; text-indent: -17.95pt;">
<span style="font-family: "Arial","sans-serif"; mso-fareast-font-family: Arial;">●<span style="font-family: 'Times New Roman'; font-size: 7pt;">     </span></span><span dir="LTR"></span>Faithfully install and upgrade software, apps, games, and
anything installed in your device. These patches and updates are typically
offered free by providers, as they are also constantly fighting against
broadband threats.<o:p></o:p></div>
<div class="MsoNormalCxSpMiddle" style="margin-bottom: .0001pt; margin-bottom: 0in; margin-left: .5in; margin-right: 0in; margin-top: 0in; mso-add-space: auto; mso-list: l0 level1 lfo1; text-indent: -17.95pt;">
<span style="font-family: "Arial","sans-serif"; mso-fareast-font-family: Arial;">●<span style="font-family: 'Times New Roman'; font-size: 7pt;">     </span></span><span dir="LTR"></span>Always use a firewall. Your firewall is your sifter that screens
potentially dangerous information and stops it from ever going into your
computer or network. You have a network firewall and a computer firewall, at
the very least. You can control its settings to allow trusted data to always
pass through, which still provides sufficient flexibility for good security.<o:p></o:p></div>
<div class="MsoNormalCxSpMiddle" style="margin-bottom: .0001pt; margin-bottom: 0in; margin-left: .5in; margin-right: 0in; margin-top: 0in; mso-add-space: auto; mso-list: l0 level1 lfo1; text-indent: -17.95pt;">
<span style="font-family: "Arial","sans-serif"; mso-fareast-font-family: Arial;">●<span style="font-family: 'Times New Roman'; font-size: 7pt;">     </span></span><span dir="LTR"></span>Deploy an anti-virus. Anti-virus providers always try to keep
abreast of developments in the industry, and are always updating their
databases so your software always knows about the latest viruses or other threats
to your security.<o:p></o:p></div>
<div class="MsoNormalCxSpMiddle" style="margin-left: .5in; mso-add-space: auto; mso-list: l0 level1 lfo1; text-indent: -17.95pt;">
<span style="font-family: "Arial","sans-serif"; mso-fareast-font-family: Arial;">●<span style="font-family: 'Times New Roman'; font-size: 7pt;">    
</span></span><span dir="LTR"></span>Use an Intrusion Detection
System (IDS). An IDS does exactly what it sounds like: it provides warnings
about potential attacks or illicit entries into your system. It can also
monitor critical areas of your computer or network.<o:p></o:p></div>
<div class="MsoNormal">
<br /></div>
<br />
<div class="MsoNormal">
Ask your service providers for more information and more
options to prepare yourself against wireless threats to broadband security.<o:p></o:p><br />
<br />
<div class="separator" style="clear: both; text-align: center;">
<a href="http://www.gravatar.com/avatar/b2a4f04659d5bb4b310e233323ed8190.png" imageanchor="1" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img alt="Ian G. Elbanbuena" border="0" src="http://www.gravatar.com/avatar/b2a4f04659d5bb4b310e233323ed8190.png" title="Ian G. Elbanbuena" /></a></div>
<span style="font-family: Calibri, sans-serif; font-size: 11pt; line-height: 107%;"><a href="https://plus.google.com/u/0/110532977385282494579/" target="_blank"><span style="color: #1155cc;">Ian G. Elbanbuena</span></a> is a blogger and infopreneur
who writes on various topics mainly finance, web security, network connections,
broadband plans and other technical topics . At present he works as marketing
staff at <a href="http://comparehero.my/" target="_blank"><span style="color: #1155cc;">comparehero.my</span></a>,
Malaysia's leading comparison website. This portal helps individuals in making
the best decision by comparing rates from different  finance providers.</span></div>

Wireless Threats: Is Your Broadband Secure Enough?

Internet use in Malaysia is at an all-time high and is still growing, and broadband adoption is rapidly spreading along with mobile connectivity. In this environment of increasing digital interconnec…

17 Nov 2013

SQL Injection-how about your site ?

SQL Injection-how about your site ?

Many web developers are unaware of how SQL queries can be tampered with, and assume that an SQL query is a trusted command. It means that SQL queries are able to circumvent access controls, thereby b…

23 Jun 2013

New Standard Pushes for a More Secure Web

There is no silver bullet when it comes to encryption. Even the most complex, invulnerable encryption today could be child’s play in the future. The NIST (National Institute of Standards and Technology) is <a href="http://www.pcworld.com/businesscenter/article/260922/new_nist_encryption_guidelines_may_force_federal_agencies_to_replace_old_websites.html">publishing new encryption standards</a> for public review to try and keep up with the times and stay a step ahead of the bad guys. <br>
<a href="http://images.pcworld.com/images/article/2012/04/secure_browser-11351369.jpg"><img alt="" height="227" src="http://images.pcworld.com/images/article/2012/04/secure_browser-11351369.jpg" width="320"></a>The NIST is a government agency, and its guidelines only really impact other government agencies. However, many security experts and organizations look to the NIST standards as a baseline. <br>
All of security is more or less a game of cat and mouse. Security measures are put in place, and they work for a while until attackers find the weak spots, or figure out how to compromise or circumvent them. Then, security experts have to devise new methods, and the game starts over. Website encryption, and the certificates we use to prove a site is legitimate, are subject to this same cause and effect.<br>

New Standard Pushes for a More Secure Web

20 Jun 2013

Defcon Wi-Fi Hack Called No Threat to Enterprise WLANs

<p>Enterprise Wi-Fi networks can keep using WPA2 security safely, despite a <a href="http://www.networkworld.com/news/2012/072912-tools-released-at-defcon-can-261242.html">recent Defcon exploit</a> that has been widely, but wrongly, interpreted as rendering it useless. <p>The exploit successfully compromised a legacy authentication protocol, MS-CHAPv2, which was created by Microsoft years ago. But the vulnerabilities of this protocol (and other similar ones) are well known, and Wi-Fi Protected Access 2 makes use of additional mechanisms to protect them. That protection is still in force, according to both the Wi-Fi Alliance and a wireless architect, who blogged in depth on this issue after the Defcon exploit was reported. <p>IN PICTURES:&#160;<a href="http://www.networkworld.com/slideshow/58324">Quirkiest moments at 2012 Black Hat security conference</a> <p>In the wake of the Defcon demonstration, enterprises were being urged by some to abandon MS-CHAP, the Protected Extensible Authentication Protocol (PEAP), WPA2 or all of the above. None of that is necessary. <p>The Wi-Fi Alliance has reviewed the chapcrack tool and cloudcracker service announced last week at Defcon 20 and these tools do not present an exploitable vulnerability in Wi-Fi CERTIFIED products, according to statement issued by the Wi-Fi Alliance, via Kelly Davis-Felner, the WFA marketing director. These tools exploit previously-documented weaknesses in the use of Microsoft CHAP (MS-CHAP).&#160;All uses of MS-CHAP in WPA2 are protected by the Transport Layer Security (TLS) protocol. TLS is the same strong cryptographic technology that protects all online e-commerce transactions. TLS prevents interception of the MS-CHAP messages used in WPA2 Enterprise and effectively protects against attacks using chapcrack or cloudcracker.</p> </p></p></p></p>

Defcon Wi-Fi Hack Called No Threat to Enterprise WLANs

Enterprise Wi-Fi networks can keep using WPA2 security safely, despite a recent Defcon exploit that has been widely, but wrongly, interpreted as rendering it useless. The exploit successfully compromi…

15 Jun 2013

DNSChanger Malware: What's Next?

DNSChanger Malware: What's Next?

The Federal Bureau of Investigation estimates around 64,000 computers in the U.S. infected with the DNSChanger Trojan may have Internet connectivity problems Monday. This particularly nasty piece of …

14 Jun 2013

Is your website safe enough ?

Is your website safe enough ?

When i wake up this morning and see statistic of my site and my blog i get many bad bot and spam that want try to access to my domain. it is nothing strange for me. as I tried to fight bad bots, suspi…

04 May 2013

What is IPv6?

<br> <table border="0" cellpadding="0" cellspacing="0" class="MsoNormalTable" style="mso-cellspacing:0;mso-padding-alt:0;mso-yfti-tbllook:1184;width:620px"> <tbody> <tr style="mso-yfti-firstrow:yes;mso-yfti-irow:0;mso-yfti-lastrow:yes"> <td style="padding:0;width:267.75pt" width="357"><div class="MsoNormal"> IPv6 or Internet Protocol Version 6 is is the latest revision of the Internet Protocol (IP), the communications protocol that provides an identification and location system for computers on networks and routes traffic across the Internet and <span style="mso-spacerun:yes"> </span>the next generation protocol for the Internet. It's designed to provide several advantages over current Internet Protocol Version 4 (or IPv4).<br> <br> Both IPv6 and IPv4 define network layer protocol i.e., how data is sent from one computer to another computer over packet-switched networks such as the Internet. </div> </td> <td style="padding:0;width:8.25pt" width="11"><div class="MsoNormal"> <br></div> </td> <td style="padding:0;width:189.0pt" width="252"><div class="MsoNormal"> <span style="mso-fareast-language:MS;mso-no-proof:yes"><img alt="Description: IPv6" height="150" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiW5J_jv90Nv3qJ9lgf2O_abNZRd888DNVdVlL8ZnPHptjlUn6AD1PPVpB88Admm9E64MtncI9VPLFGZQnMwrEEuSk7Lj_V6B12_jPHtG5SvByFnPBYJTZGS-vAl54_aSLqRdRkyquDLfI/s1600/54.jpg" width="230"></span></div> </td> </tr> </tbody></table> <div class="MsoNormal"> <br></div> <table border="0" cellpadding="0" cellspacing="0" class="MsoNormalTable" style="mso-cellspacing:0;mso-padding-alt:0;mso-yfti-tbllook:1184;width:620px"> <tbody> <tr style="mso-yfti-firstrow:yes;mso-yfti-irow:0;mso-yfti-lastrow:yes"> <td style="padding:0;width:270.75pt" valign="top" width="361"><div class="MsoNormal"> Specifically, IPv6 contains addressing and control information to route packets for the next generation Internet.We believe that the expansion of the Internet is important and upgrades are sometimes warranted.<br> <br></div></td></tr></tbody></table>

What is IPv6?

IPv6 or Internet Protocol Version 6 is is the latest revision of the Internet Protocol (IP), the communications protocol that provides an identification and location system for computers on netwo…

21 Apr 2013

Blocked ip,host name and user agent

Blocked ip,host name and user agent

Host currently block to access http://www.ezadnet.my. If we have remove or add ip/host/user agent from list we never mention here anymore. verizon.net sucuri.net builtwith.com suttlessurvey.com psyc…

08 Feb 2013

DoS/DDoS attack

In computing, a denial-of-service attack (DoS attack) or distributed denial-of-service attack (DDoS attack) is an attempt to make a machine or network resource unavailable to its intended users. Although the means to carry out, motives for, and targets of a DoS attack may vary, it generally consists of the efforts of one or more people to temporarily or indefinitely interrupt or suspend services of a host connected to the Internet.<br>
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Distributed-Denial-of-Service (DDoS) attacks occur when multiple compromised systems are used to target a single system causing a Denial-of-Service (DoS) attack. Victims of DDoS attacks include the end targeted system as well as systems in the network path and all systems maliciously used and controlled by the hacker (or hackers) in the distributed attacks. When successful, DDoS attacks result in service downtime and great losses including short-term financial losses, long-term reputational losses and even permanent business disability, especially for businesses with core revenue generating functions. <br>

DoS/DDoS attack

06 Feb 2013

Open DNS server

Open DNS server

1. Cesedian Root =78.47.115.195,78.47.115.198 2. Google =8.8.8.8,8.8.4.4 3. Open =208.67.222.222,208.67.220.220 4. Open 2 =216.87.84.209,216.87.84.211 5. Advantage …

19 Jan 2013

DNS jumper

DNS jumper

Change your dns from your original ISP into public DNS ip address like google DNS or fastest DNS ip address. After download you can open DnsJumper.ini and you can add more open dns ip on this post. D…

16 Jan 2013

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