From MIXXnet Wiki
Ninjutsu is a MIXXnet server located in Virginia. It is operated by "alex323". The purpose of ninjutsu is to be a testing server for new services MIXXnet will roll out. New services include a proxy scanner and encrypted connections to MIXXnet via SSL.
Ninjutsu supports full SSL connectivity (traffic from user to server and traffic from server to hub is encrypted), and is included in the round-robin "irc.ssl.mixxnet.net".
Ports: 6667, 6697 (SSL)