dont use no-ip crap lol nobody can set up a server?its easy
1.allow the ports 7777,2106(both tcp and udp protocoll)
2.use your own ip ( www.whatsmyip.com ) not these no-ip shits
3.in the case of you run the login and gameserver on the same pc use your ip in every config option where you need to give an ip(use your ip instead of bin all adress aka * can make your boot time faster)
4.make a host file with xxx.xxx.xxx.xxx L2authd.lineage2.com dont need to use testAuthd its not used by a live client
and voila everything done.