I'm currently trying to configure L2TPoIPSec on a ASA5505. There are several l2l tunnels and also vpn-clients connecting.
Now I configured the l2tp-connections as the configuration guideline states, but the asa seems not to recognise my l2tp packets.
Capturing the packets at the outside interface i can seem them comming in on the external interface but then nothing happens at all.
I tried all debug commands with all levels i could find but there is nothing happening.
If I can get only an error in the debuglog then I'd able ta troubleshoot but if it's not for the capturebuffer, there is no hint or activity that suggest that a l2tppacket has arrived.
Hope someone can give me a hint, why i might not see any reaction from the asa to my connection attempts.