Hi, I am trying to set up multiple ipsec VPN clients working behind a Linux router with NAT/PAT, based on a 2.4.20 (can be 2.4.22) kernel. I would like to be able to connect a number of Windows (2k or XP) machines to an existing Cisco VPN server. client 1 (ipsec) ---> | router | client 2 (ipsec) ---> | NAT/ | . PAT | -> ipsec VPN server (Cisco) . | | client 10 (ipsec) --->| | A patch seems to be needed to make this work, and I have seen a lot of emails with a similar question in regards to pptp VPN clients, but nothing encouraging for ipsec. I have also seen the IP masquerade HOWTO and the VPN HOWTO, which both refer to a patch for 2.2 kernels, but claim nothing is available for 2.4 kernels. I am a netfilter newbie (if this is not blindingly obvious), so any help would be much appreciated. Kind regards, Roksana
