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Re: Sniffing a VPN




tcpdump -w file dst dst-ip-number

./sniffit -a -t dst-ip-number

ngrep dst 193.15.98.13


Regards Jonas Eriksson
--
InterACT Luleň
Network & Security Administrator
Tel: +46 (0)920 88803 - Fax: +46 (0)920 88399
Current temp in Lulea/Sweden is 10.6C (51.1F)

On Fri, 24 Sep 1999, Joe Nall wrote:

> I have set up a test VPN and have been trying to verify that packets are
> encrypted.  From a third BSD box on the lan between the two gateways I
> was able to use sniffit and ngrep to see tcp/udp traffic before the VPN,
> now neither tool can see any packets when the two subnets are talking. 
> Any clues on a sniffit configuration or another more appropriate tool to
> see the packets?  I want to verify that the traffic is encrypted.
> 
> Thanks,
> Joe
>