Expired VPN's internal certificate

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Hi,

We are using cluster Checkpoint NG FP3 running in Solaris 8 and rainwall as the clustering software. The VPN internal certificate of the cluster firewall object has already expired about 8 days ago and since we no longer use secure remote and secure client it does not have any impact with our remote user.

My concern is since we also use this firewall for site to site VPN, I am worried that the site to site VPN will break if I install the policy. Does site to site VPN also dependent to this internal certificate? Any advise will be greatly appreciated. Thanks a lot.

regards.