Some networks require you to connect with SASL when connecting from LunarBNC.
LunarBNC users will need to configure SASL on their account in order to connect to these networks.
This can be done by accessing your BNC with your favorite IRC client and after being connected type:
/msg *sasl mechanism plain
/msg *sasl set NickServName NickServPassword
(Where NickServName is the name and NickServPassword is the password you normally use on this IRC network)