abnother one find on logmeinwiki -> hamachi. but not sure this will work's with wippien
for h-l game's type
well... at the first place I have to apologizes for my bad english.
I had the same problem, restriction for local clients class C, but I fixed it.
I downloaded a CS and some more patches (I can send the site if u want).
go on the properties of dedicated serv and you will open a window(oh, really?). In this window type this in the destination "directory .... hlds.exe" -master -game cstrike +ip your ip from hamachi.
I'll give you an example, for me, the location of dedicated serv is here "D: My Documents Games Files Valve hlds.exe"
say your hamachi ip is 184.108.40.206, then add this -> " -master -game cstrike + ip 220.127.116.11"
[There is a space before -master and -game]
create servers using dedicated server.
ur serv will have your hamachi's ip.
It worked for the old engine (cs 1.6, HL1, sven [pretty cool =D] ...) but when I tried to do this with the source engine (hl2, l4d2, team fortress 2) I have not had success. if anyone knows anything or where I can find a non-steam dedicated server, please say me.
observation: I'm here because I can't play online or create servers using a non-steam l4d2 with my friends, if anyone knows how, please tell me. =D
I hope I have helped. cya