u need to simple add these to system.cfg
net_initLobbyServiceToLan=1
g_multiplayerdefault=1
g_dummyPlayersFire=1
g_dummyPlayersMove=1
g_dedicatedClientInput_commitSuicide=1
sys_no_crash_dialog=1
net_profile_enable= 1
net_profile_logging=1
net_log=1
then when ur connected to hamachi or tunngle... u can easily connect to the server
net_initLobbyServiceToLan=1
g_multiplayerdefault=1
g_dummyPlayersFire=1
g_dummyPlayersMove=1
g_dedicatedClientInput_commitSuicide=1
sys_no_crash_dialog=1
net_profile_enable= 1
net_profile_logging=1
net_log=1
then when ur connected to hamachi or tunngle... u can easily connect to the server