> I've searched the net for a little while and to me it seems like NOS is > a normal ipip tunnel but using ipprotocol 94 instead of 4 [...] > So if you change the value of IPPROTO_IPIP to 94 and recompile your kernel > it should work. it could be nice to have a iptables mangle target allowing arbitrary modification of packets ... I believe the protocol field is at a fixed offset, so that might work, or am I wrong ? it might also be possible to tweak UDP packets to TCP packets and reversely, to bypass dumb firewalls blocking UDP packets (but not doing stateful filtering). if that sounds technically ok, I might write the iptables target to do that ... it should be easy, anyway. Jerome Petazzoni <skaya at enix dot org> -- 'I don't like to ask them questions.' 'Why not?' 'They might give me answers. And then what would I do?' (Lords and Ladies)
