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Network Security Firewalls
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Tool required for Decrypting IKE packet capture with a known preshared k

Subject: Tool required for Decrypting IKE packet capture with a known preshared key
Date: Thu, 24 Aug 2006 15:43:08 +1000
Hi All,

I am not sure if this is the right target group to send this query, but i
need some info and would appreciate if anyone could re-direct or help with
my question.

I am trying to debug IKE/IPSEC VPN configuration issues between our firewall

(Sonicwall) and the one on remote end (netscreen). Due to Sonicwall's
limited logging ability, it doesn't tell you why and where the VPN
negoitations have failed.

Hence, i would like to capture these packets and run through them to see the

cause of these failures. But, to do this, i need to be able to decrypt the
IKE packets. The VPN tunnel is using a pre-shared key which i have created,
what i would like is a tool which can decrypt the IKE conversation by using
this key and return back packets/payload in the clear text.

Any help would be appreciated.

Cheers,

Gurbir
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