Re: Can't open port in firewalld

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On Sat, 18 May 2013 22:07:15 +0100
আনন্দ কুমার সমাদ্দার Ananda Samaddar <ananda@xxxxxxxxxxxxxx> wrote:

> On Sat, 18 May 2013 14:02:06 -0700
> "T.C. Hollingsworth" <tchollingsworth@xxxxxxxxx> wrote:
> 
> > On Sat, May 18, 2013 at 1:47 PM, আনন্দ কুমার সমাদ্দার
> > <ananda@xxxxxxxxxxxxxx> wrote:
> > > Hello all,
> > >
> > > So I've found out that by default my script controlled ethernet
> > > connection is in the public zone in firewalld.  I however cannot
> > > open a port for Transmission, the torrent client.  I set
> > > Transmission to use the static default port 51413.
> > >
> > > I then do the following:
> > >
> > > firewall-cmd --zone=public --permanent --add-port=51413/tcp
> > > firewall-cmd --zone=public --permanent --add-port=51413/udp
> > >
> > > Transmission shows the port as closed.  It's definitely a
> > > firewalld issue.  As soon as I disable firewalld by using systemd
> > > the port is shown as open in Transmission.
> > >
> > > Am I doing something wrong here?
> > 
> > Well, if you use `--permanent` the setting won't take effect until
> > after firewalld (or your computer) is restarted, but starting and
> > stopping firewalld like you did to test it should have taken care of
> > that.  (You can call `firewall-cmd` without `--permanent` to get the
> > settings to take effect immediately.)
> > 
> > Do you have a router in between your machine?  You might need to
> > open/forward the port in that too.
> > 
> > Otherwise, transmission-gtk might be lying about the port being
> > open. (I've been using Deluge instead of Transmission for what
> > seems like ages now, but I do recall the port open checking thingy
> > in Transmission not working so good before.)  Try checking the port
> > with `nmap` or ShieldsUP [1] and see if that reports it as open.
> > 
> > -T.C.
> > 
> > [1] https://www.grc.com/x/ne.dll?bh0bkyd2
> 
> I tested the port on ShieldsUP and it informs me that it is 'stealth'
> mode so obviously not open.  I don't think the router is the problem
> as when I disabled the firewall the port was shown as being open.
> I'll give Deluge a shot.
> 
> Ananda

No joy with Deluge using the same port.  When firewalld is active the
port is closed.  When it's disabled the port is shown as open in Deluge.

Ananda
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