Verlihub - Direct Connect server

Verlihub is a Direct Connect protocol server that runs on Linux OS,
written in C++; Many features are available: MySQL database, very low
use of CPU, RAM & Bandwidth, deflood integrated protection, plugins
(LUA, forbidden, ip-log, funny, messenger & chatroom) and MORE, MORE
AND MORE...

If you don't want to run verlihub as root and still use port 411, get
the optional dependency authbind.