Hi!
I am testing VPN connection to ASL 5.200 from windows 2000 native client (using L2TP) as roadwarrior.
Connection is established through filtering router.
For testing purposes everything was opened from my client PC to ASL on router.
VPN connection was successfully established to ASL.
Then I added ip filters to router:
Protocol 50 from client to server
Protocol 51 from client to server
UDP 500 from client to UDP 500 server
Anything from server to client
Router dropped some UDP packets in the beginning of the communication:
IPFIL FAIL 5/71 Fail clientip>serverip UDP 37528>40059 577:364
(different UDP ports are used at the beginning of each communication)
If filter is added to router:
UDP 1024:65535 from client to UDP 1024:65535 server
Connection is established.
Is it normal, that high UDP ports must be opened to ASL?
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