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Re: firewall problems
On Tuesday 18 September 2001 21:31, mulix wrote:
> On Sun, 16 Sep 2001, yaniv almog wrote:
> > I have recently installed Red-Hat 7.1 at work. My computer is connected
> > th the network via eth0. The problem is that my maschine no longeraccept
> > telnet, ftp, or e-mail. I tried to disable the firewall: by the
> > gnome-lokkit utility, by editing manually the ipchains script, by
> > diabling the ipchains and iptables servieces, an finally by reinstalling
> > the OS from scratch with the no-firewall option - with no success at all.
>
> there are several reasons why your machine may not be accepting
> connections:
>
> * because they are blocked at the firewall level (check with 'iptables
> -L' to see the firewall rules).
> * because they are blocked at the inetd level, by tcpwrappers (possible.
> check out your /etc/hosts.allow and /etc/hosts.deny)
> * because the servers aren't running (check your /etc/inetd.conf or
> /etc/xinetd.conf)
> * because the servers aren't allowing the connection - this has to be
> debugged on a per server basis.
>
> based on your description, i would guess that it's inetd's fault,
> whether on the tcp wrappers level or inetd leval. check the inetd
> configuration file - on redhat 6.2 it's /etc/inetd.conf, but i think
> inetd is called 'xinetd' in redhat 7.x.
Also see /etc/xinetd.d/. RedHat stores all the services configuration files
there (since 7.x), for example - wu-ftpd configuration should be in
/etc/xinetd.d/wu-ftpd
All the services in xinetd are disabled by default, so you must enable them
yourself.
Sagi
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