pode ser

Vi teu comentário num fórum de kf1. Se quiser jogar ai algum dia. Tô procurando gente pra jogar.

You certainly need to do that in the killingfloor.ini file. If you are hosting from home, you have probably set up port-forwarding, so you'll need to adjust those ports as well.

i need to do that in the killingfloor.ini or in my router as usual?

By default, the game & query ports are 7707 and 7708. Make them different. For example, 40007 and 40008.

thanks, but killing floor 1 has unique ports right? where's the different ones?