[1747] in linux-net channel archive
Re: rlogin yes, telnet no ?!
daemon@ATHENA.MIT.EDU (John Paul Morrison)
Wed Jan 31 02:50:50 1996
From: John Paul Morrison <jmorriso@multiactive.com>
To: jvichere@undergrad.math.uwaterloo.ca (Jan Vicherek)
Date: Tue, 30 Jan 1996 14:16:53 -0800 (PST)
Cc: linux-net@vger.rutgers.edu, masq@indyramp.com
In-Reply-To: <Pine.ULT.3.91.960129153937.16845A-100000@noether.math.uwaterloo.ca> from "Jan Vicherek" at Jan 30, 96 01:01:40 am
rlogin fails over a masquerade because the rlogind on the peer requires a privileged port (ie < 1024).
masquerading maps TCP ports to above 6000.
It would be a good feature for masquerade to preserve privileged ports (or not - make it configurable).
rlogin and rlogind use the privileged ports for "security" and stuff like .rhosts. It's not secure
at all though.
>
>
> Hi.
>
> I've here something quite strange (calum is a machine on the net):
>
> this is on a machine that is on the local net behind IP_MASQURADE (but
> the machine itself is not the host that does the IP_MASQURADing)
>
> su - regular_user
>
> 1019 $ telnet calum
> calum: Unknown server error
>
> 1020 $ rlogin calum
> rlogind: Permission denied.
>
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