We are having an intermittent problem with our remote access VPN to our ASA running the newest IOS and ASDM.
Some users will connect and authenticate to our VPN but then no traffic will be encrypted. Their traffic to the network on the inside of the ASA will be encrypted and sent but nothing will be received (from the counter in the VPN client).
This happens whether the user is local on the ASA or authenticated through Active Directory, it's independent of ASA IOS (we've been through 2 versions with the same issue), VPN client version (tried 4.x, 5.x) and independent of the Clients OS.
The strange part is I can not replicate the issue on my PC consistently. I have tried every version of the VPN client and Windows XP, Vista, and 7 with no issues. The only time I had issues was connecting with Vista then disconnecting and connecting with XP a few seconds later. This only happened a hand full of times though.
Has anyone experienced anything like this before or can point me in a new direction?