Re: remote login issue for RH 7.2

[Rick Stevens <rstevens vitalstream com>]

Chan, Eddie wrote:
> Hi,
>
> I have freshly installed RH 7.2 on one of machine. After the installation,
> none of the remote connection work. I got connection refuse error message.
>
> I understand that the RH 7.2 turn off inet services by default in
> /etc/xinetd.d/<files>. I have turned on the telnet, ftp... etc.. (disable =
> yes). I was able to telnet from the current machine to iteselve but not from
> the other machine.
>
> First I thought the connection issue. But I was able to ping the machine
> from other machine (Even DNS works). But it just didn't let the remote login
> (ssh, ftp, telnet...). It seems that the xinetd didn't start. So I turned
> on/off the xinetd and it gave me the same result.
>
> More peculiar that I was able to ping and telnet to other machine from this
> machine but not other machine to this machine. 
>
> Any clue! It seems to me that firewall is one something but I have no idea?
> Please help...

If you installed and used the default firewall selection ("medium"),
ALL incoming connections except for DNS are blocked.  You can test
this by doing "/etc/rc.d/init.d/ipchains stop" and/or
"/etc/rc.d/init.d/iptables stop" and trying to connect from the
outside.  If that works, then obviously your firewall setup is
the cause.  Download Firestarter (http://firestarter.sourceforge.net)
or use lokkit to change your firewall settings.

And use ssh, not telnet.  Telnet is insecure and, in general, a
BAD idea to have running.
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- Rick Stevens, SSE, VitalStream, Inc.      rstevens vitalstream com -
- 949-743-2010 (Voice)                    http://www.vitalstream.com -
-                                                                    -
-                 All generalizations are false.                     -
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