My setup is the following: I have a 3005 concentrator which I recently upgrade the flash image to vpn3005-3.5.3.Rel-k9.bin. in order to support the IPSec over TCP addition (as alot of my remote users have Linksys routers doing NAT). I upgraded my clients with a mixture of version 3.5.1, 3.5.2, and 3.5.3
I'm noticing the following issues since then:
After upgrading the image on the 3005, my main user group could not connect. After changing the IPSec SA from ESP-3DES-MD5 to ESP/IKE-3DES/MD5, it worked. Since then, the following issues are taking place.
Whenever users are in MS Outlook we have a variety of things happen:
If anyone tries to attach a doc to an outgoing piece of mail, their machine hangs and eventually the IPSec connection is terminated ?
Sometimes, even just reading email in Outlook causes lose of connection.
Why did I have to change the IPSec SA method to get it to function again ?