iptables (Re: Connection Refused on ssh)
John J. Boyer
director at chpi.org
Fri Oct 8 18:29:10 UTC 2004
John,
I really think the problem may be with iptables. We've eliminated just
about everything else. H³owever, there is no ma pagel for netconfig, and
when I tried running it, I wasn't sure what to do. Really, all I need is
to let one IP address use ssh. There is a man mage for iptables, but it
looks so complicated that I wouldn't want to mess with it unless I knew
exactly what I was doing.
Thanks,
John
On Fri, 8 Oct 2004, John Heim wrote:
> At 11:22 AM 10/7/2004, Mike Gorse you wrote:
> >Also, are you sure that sshd is running on the machine (ie, pidof sshd
> >returns something)? If so, then try using ipchains or iptables to make
> >sure it isn't being firewalled. At one point we had a RH box at work on
> >which I was trying to enable ssh, but the person who installed rh had
> >selected an option for a firewall, so I wound up needing to edit a file in
> >/etc/sysconfig (the file did say that manually editing it was not
> >recommended, but it didn't say how I was supposed to edit it if not
> >manually) to tell it to accept connections on port 22 as it did for 23 and
> >others.
>
>
> You can run netconfig. It would allow you to allow ssh connections through
> your firewall. When you exit, it saves it's settings in
> /etc/sysconfig/iptables. That file is the one that says you shouldn't edit
> it manually.
>
> That netconfig program is pretty limited in what it can do. And the file
> it creates has the same format as iptables-save. So what you can do is
> issue iptables commands until you've got your firewall configured just the
> way you want it thand do this:
>
> $ iptables-save > /etc/sysconfig/iptables
>
> The next time you reboot, your firewall will be just like it was when you
> issued the above command.
>
>
>
>
>
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--
John J. Boyer; Executive Director, Chief Software Developer
Computers to Help People, Inc.
http://www.chpi.org
825 East Johnson; Madison, WI 53703
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