error 414; connection failed

[jonl711]

When trying to connect to a Cisco VPN Concentrator (Tax dept) with the Cisco VPN Client Rel 4.0.5. We get the following reason 414: Failed to establish a TCP connection. Now in looking up the reason it document ID 48160 states this may be due to using TCP and that we should try UDP. I have the Proxy 2 settings to use ports 500, 4500 and 10000 all on UDP and still we cannot access the router. I've included the log from the VPN Client hoping this would help.

[jsivulka]

UDP fragmentation errors on the conenction could be one source of the problem. Another could be the presence of firewalls or routers with access-lists that are not letting the required packets through.