<p>Does IPsec in Windows XP Sp3 support AES-256 encryption?</p>

<p><strong>Update:</strong></p>

<ol>
<li>Windows IPsec FAQ says that it's not supported in Windows XP, but maybe they changed it in Service Pack 3?<br>

http://www.microsoft.com/technet/network/ipsec/ipsecfaq.mspx<br>

Question: <em>Is Advanced Encryption Standard (AES) encryption supported?</em><br><br>
</li>

<li>origamigumby, please specify where, because I cannot find it.</li>
</ol>

You haven't maxed out the available port handles have you ?
```
netstat -a
```
I saw something similar when an app was opening and closing ports (but not actually closing them correctly).