Question about Router ports for hosting coop

[ramstein]

I have gathered some infor on hosting IL-2 COD on Steam, and saw this stuff..
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Steam Ports
https://support.steampowered.com/kb_...8571-GLVN-8711
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Required Ports for Steam
Question:
Which ports do I need to open on my router or firewall for Steam?

Answer
Your network must be configured to allow Steam access to the following ports (in order from highest to lowest priority for QoS users):

Steam Client
UDP 27000 to 27015 inclusive (Game client traffic)
UDP 27015 to 27030 inclusive (Typically Matchmaking and HLTV)
TCP 27014 to 27050 inclusive (Steam downloads)
UDP 4380


Dedicated or Listen Servers
TCP 27015 (SRCDS Rcon port)


Steamworks P2P Networking and Steam Voice Chat
UDP 3478 (Outbound)
UDP 4379 (Outbound)
UDP 4380 (Outbound)


Additional Ports for Call of Duty: Modern Warfare 2 Multiplayer
UDP 1500 (outbound)
UDP 3005 (outbound)
UDP 3101 (outbound)
UDP 28960
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But, I can, with no problem join servers and play,, no problemo.. but i want to host missions..

With my router, which ports must be opened?
If they are udp and tcp and overlap, I like to cobime them into one input like 27000 to 27050 (Both udp and tcp). Instead of putting 27000 to 27104, then another line with 27015 to 27030, in steps.. that makes no sense, even though Steam lists all the ports in several batches of tcp and udp numbers..

But, in the game and ini file 27015 are listed, also 27016. (both udp and tcp).
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But, I had freinds check the servers and they said they did not see my server when I listed the 27000 to 27050 (both udp and tcp). I also have put upd 4380 (not sure if I need that).
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not that it's much different the brand and model, but it's a new Netgear cable modem and router combined 'N' series.. and has plenty of avaiable ports to add..

Bottom line, there is no Faq or post in a forum that clearly spells out what ports to put in my Router to host Clod.

Also, there is a 'Lobby', in Clod, what is that for?

Again, I have no problem joining all games on servers.
My gaming computer is wired to the modem, I use wireless for other computers at home that are non-gaming.

Thanx..