On Wed, Oct 22, 2003 at 11:12:56AM +0000, dimitri borjac spoke thusly: >do you know where i can find any interesting documentation about the >interoperability/compatibility of ipsec with iptables ...? Check the FreeSWAN docs out. Last time I checked (which was in the v1.9x series); there were complementary information in regards to it. It also depends on what IPsec scenario are you envisioning ? >what's more regarding the eventual UDP encapsulation and the pass-through >technology ? I think only Checkpoint (?) and Cisco do UDP encapsulation for NAT traversal. Have no experience with pass-through. In general, IPsec + Netfilter will play nice together. If you are experiencing otherwise however, give us more information.