SRCDS Steam group

Which ports to open in firewall?
I'm using my Linux dedicated server to host multiple Left 4 Dead games. Which ports do I need to open in iptables, apart from the ports that I use to host the games (27015-27019)?

I found this in another thread, but this seems to be for the client and not the server.

Steam Friends Service UDP 1200 1200
Steam Main UDP UDP 27000 27015
Steam Main TCP TCP 27020 27039
Steam CyberCafe TCP 27040 27041
Steam Dedicated Server HLDS, SRCDS UDP 27015 27015
Steam Dedicated Server HLTV UDP 27020 27020
Steam SRCDS Rcon TCP 27015 27015

Do I need to open the ports for the Friends Service, Cybercafe and HLTV for my dedicated server, probably not right?

Thanks in advance!
I have the following ports open in iptables on my box running l4d. I agree, you likely don't need Cybercafe and HLTV. I believe Friends service allows people to see their friends if they join your server, though I could be wrong.

UDP 1200
UDP 27000 - 27020
TCP 27015
TCP 27030 - 27039
Thanks, that's exactly what I wanted to know Smile
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