Good question, but I don't know that you could encrypt only ICMP traffic. Think about it- you use IP ACL's, and ICMP is included automatically. 
Now, you could use GRE over IPEC with a little sprinkle of PBR to encrypt only the ICMP, I mean, if you wanted to get crazy.
Regards,
Jay McMickle- CCIE #35355 (R&S)
Sent from iJay
On Jul 7, 2012, at 8:18 AM, "amin" <amin_at_axizo.com> wrote:
> Hi experts,
> 
> Site2site VPN between two ASAs, let us assume I want to encrypt the ICMP,
> and leave the two LANs traffic between the two site unencrypted.
> 
> LAN 1  172.16.1.1/24, LAN 2  172.16.2.0/24 == ICMP encrypted
> 
> LAN 1  172.16.1.1/24, LAN 2  172.16.2.0/24 == Other traffic unencrypted
> 
> 
> 
> Regards,
> 
> Amin
> 
> 
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Received on Tue Jul 10 2012 - 21:18:33 ART
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