[Openswan Users] Tunnel up but no communication

[Giovani Moda - MR Informática]

Hey folks,

Recently I've upgraded an ipsec 2.2.0 to 2.3.1 on an FC2 system. The tunnel 
came up just fine, and I could ping both sides. But, for some reason I could 
not understand, the communication between the subnets would not occur. I use 
an telnet client, and I connect to the server through the ipsec tunnel. 
After the upgrade, the communication stoped working. I could ping the other 
side, but when I tried to telnet it, it just hung there... Same thing 
happened when I tried to navigate to it with windows network client.

I could not find an single error in it. No warnings, no failures. With 
tcpdumpt, I could see ESP packages exchange between the two gateways, but 
telnet and network just didn't work. When I downgraded to openswan 2.1.5 it 
worked just fine. I sucessfully telnet the server and navigated to it with 
windows network client. Same config, same system, just a different version 
of openswan.

Any clues?

Giovani 



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