Agreed. Back when I was using Linode I had a crazy setup that used iptables on each server to accept traffic only from my other servers. With benefit of hindsig

Agreed. Back when I was using Linode I had a crazy setup that used iptables on each server to accept traffic only from my other servers. With benefit of hindsight I might have maintained it differently, but needless to say, it was a bit fragile.