l2synergy is one of the servers that uses a launcher called :Bake Ice...this luncher is one of the best security systems to prevent l2walkers in general..am not pro in this shiit.. but ive been to over 10 forums to look for a way to bypass bake ice.. but nothing yet..
PS: i was fooling around with the bake ice thingy..i removed l2.ini and started it.. and i was able to log in game..so i think it doesn't even use l2.ini ,but how ever.. there was a LineageBK.dll was created after launching the bake ice launcher i dunno what it is.. but i think it uses it instead of the l2.ini..when this file is renamed/deleted after launching the game.. u cant login.. so probably that dll got the ip and port and other info about how to log in to the server .. i also noticed when i logged in game ,at the select server it says that my protocol version is not correct ,but i can login normally and continues to the world server.. anyway so far.. bake ice is impossible to bypass from what i know.