[Deathrow Bo Dean]

Maybe it will help matters along if I post my L4D2 server start up file below.
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I use this one to launch my Linux L4D2 Dedicated Server. It is basically the same as the Windows except for the ./ at the begging.
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./srcds_run l4d2 +maxplayers 8 +hostip 73.223.198.166 _hostport 27017 +map c2m1_highway coop -secure exec server.cfg -debug
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Please correct or add to it just what incorrect or missing

Note: I usally use port 27015 or 27016. Last night I connected to a working Steam Group server that was using 27017 and tried to use that port. However, I still could not see my Dedicated server listed after changing to that port.
Help still needed.