VPN but not ping

Unanswered Question
Jan 30th, 2007


When I configure peer to peer VPN first see each other ping or not.

I have a router in remote side. I can ping there eastablish VPN there ,

see QM-Idel but i can not ping, but when delete IP from access-list then time i can ping.

So it is wonder me that when VPN is Idel then time why i can not ping ??.

if ping can not done then other TCP is open ??.

any have explain of it ???.



I have this problem too.
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sachinraja Sun, 02/04/2007 - 21:33

Hello Biplob,

The traffic is allowed inside a VPN tunnel (TCP / ICMP etc) , depending on the Crypto ACL defined on the devices.. incase someone gives ACL permit tcp etc etc, it will not allow ICMP... normally people give the ACL to allow IP access between the source and destination networks, in which case the ICMP will work..

If you have given IP access, and even then there is an issue with reachability, after the IPSEC tunnel comes up, i think it could be a problem with routing or NAT !! Make sure the source and destination ip addresses are reachable from all the devices doing VPN...

Hope this helps.. all the best..



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