When the user reboots the 2811 router the AnyConnect SSL VPN fails. The VPN works fine before rebooting the router. Why this happens and how this issue can be resolved?
This issue is due to the Cisco Bug Id CSCto52409.
The information provided in the bug is given below:
With Secure HTTP server enabled, IOS device generates a new self-signed certificate when it reloads even if a valid self-signed certificate already exists.
When there is no CA(Certificate Authority) provided certificate on the device
Use CA provided certificate.
Upgrade to IOS version 15.2(1)T or higher to resolve this issue. To download this IOS from CCO you need to have a SmartNet contract.