27021 is the main server port. 27020 is the HLTV server. TCP 27021 is
the rcon server. 27005 is the client port (and is used by the HTLV
server for relaying). You can use +hltv_port x and +clientport y to
change the bound HLTV ports.

- Alfred

----Original Message----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of DjoDjo
Sent: Thursday, October 14, 2004 10:01 AM To:
[EMAIL PROTECTED] Subject: Re: [hlds_linux] [CS:SOURCE]
Ports usage problems

> The problem is really anoying, when you have several servers on the
> same box.
> Can we image that a single srcds process bind a single port ?
>
> Please can we have an explanation ? Alfred ?
>
>
> On Wed, Oct 13, 2004 at 08:38:23PM +0200, Jesper S?rensen wrote:
> > Michael McKoy wrote:
> >
> > > I'm not sure why port 27005 is bound. Traditionally this would be
> > > the client port, so the server shouldn't be opening it. I don't
> > > know what the 27020 port is but it might be related to the built
> > > in HLTV? One of these ports handles server queries though, I
> > > think.
> > >
> > > The TCP port is rcon, of course.
> > >
> > >
> > >
> > > > Hi,
> > > >
> > > > I've lots of problems with srcds port binding.
> > > > I just found that a single srcds process had 3 UDP ports
> > > > openned.
> > > >
> > > > falcon:~# netstat -ap | grep 9660
> > > > tcp      0 0 falcon:27021      *:* LISTEN     9660/srcds_amd
> > > > udp 110352 0 falcon:27020      *:*            9660/srcds_amd
> > > > udp      0 0 falcon:27021      *:*            9660/srcds_amd
> > > > udp      0 0 falcon:27005      *:*            9660/srcds_amd
> > > >
> > > > The port option ont the HL command line is "-port 27021".
> > > >
> > > > Can anyone explain me why the port 27020 is used by the same
> > > > process ? Can we disable this? And the port 27005 ?
> > > > I have another server on the port 27020, so that's a problem.
> > > >
> > > > Second thing, when the asked port is in use, I dont want that
> > > > the srcds server automatically bind another free port. Is it
> > > > possible ?
> > > > I can't find any benefit from this feature.
> > > > If the port 21 is in use, does an FTP server automatically use
> > > > the port 22 ? :/
> > > >
> > > > Thanks !
> > > >
> > > > --
> > > > DjoDjo
> > > >
> > > > _______________________________________________
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> > > >
> > > >
> > >
> > >
> > >
> > >
> > > _______________________________________________
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> > > archives, please visit:
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> > >
> > > .
> > >
> > >
> > >
> > This is what I get on a windows box :
> > TCP    x.x.x.x:27015      0.0.0.0:0              LISTENING
> > UDP    0.0.0.0:27005          *:*
> > UDP    0.0.0.0:27007          *:*
> > UDP    0.0.0.0:27015          *:*
> > UDP    0.0.0.0:27020          *:*
> >
> > The TCP is for RCON, but the rest - Not a clue.
>
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