- Is this incoming or outgoing? Because somehow the IKE packets seem to
match traffic outside your community.The initial IKE packets can be seen
leaving the cluster. However IKE negotiation does not take place.

- Might there be a NAT issue that causes you to send the wrong
addresses?Either on the firewall(s) or the network in between.
Cluster A's topology points to Network A as its encryption domain. Cluster
B's topology points to Network B as its encryption domain. Each network is
Hide NAT'ed behind its respective firewall cluster. There are no custom NAT
/ static NAT rules that pertain to these network objects.


On 10/18/06, Phoenix Ikki <[EMAIL PROTECTED]> wrote:

Have you set the VPN domain? In the Check Point Gateway -> Topology

Regards,
ali

-----Original Message-----
From: Mailing list for discussion of Firewall-1
[mailto:[EMAIL PROTECTED] On Behalf Of Satyam
Mathura
Sent: 18 Oktober 2006 4:09
To: [email protected]
Subject: [FW-1] VPN Problem

Hey Guys:
     I'm currently setting up a site to site VPN between 2 Chkpt R61 HA
clusters. Both clusters are managed from the same SmartCenter Server. The
encryption domain for each site only includes its internal network. Both
clusters belong to the same VPN Community and i have the following rule in
place:
Source:                                        Destination
If Via           Service     Action
Site A Encryption Domain  Site A Encryption Domain          VPN
Any         Allow
Site B Encryption Domain  Site B Encryption Domain

After installing the policy on both clusters and testing connectivity
between the 2 sites, i notice that the initial IKE negotiation is accepted
between the two sites. However, the resulting traffic is dropped between
the
2 sites and i get the following error msgs:
Information:                 IKE:  No common community for myself

Information:                              service_id: icmp-proto
                                                 ICMP: Echo Request
                                                 ICMP Type: 8
                                                 ICMP Code: 0
                                                 encryption fail reason:
Packet is dropped because there is no valid SA - please refer to solution
sk19423 in SecureKnowledge Database for more information

I cannot find any reference to the "No common community" error on
SecureKnowledge. I have double-checked my VPN configuration but cannot
find
the cause of the problem. Any idea what may be causing this?

Regards.

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