Adam Sampson's firewall bookmarkshttps://bookmarks.offog.org/ats/firewallAdam Sampson2016-10-14T16:18:00ZSamy Kamkar - pwnat: NAT to NAT client-server communicationhttps://bookmarks.offog.org/edit?url=http%3A%2F%2Fsamy.pl%2Fpwnat%2F2016-10-14T16:18:00ZHole-punching by forged ICMP. Neat, and the paper does have some description of how well it works in practice.ferm - for Easy Rule Makinghttps://bookmarks.offog.org/edit?url=http%3A%2F%2Fferm.foo-projects.org%2F2012-01-22T10:59:12ZPreprocessor for iptables. Seems to work nicely.