by Peter Marda » Tue, 04 Mar 1997 04:00:00
To whom it may concern,
The version of portmap which comes with RedHat 4.1 is buggy, in that
it reads /etc/hosts.allow incorrectly.
The tcp-wrappers reads /etc/hosts.allow properly, but in order for
portmap to work properly, the allowed hosts MUST listed by *IP* address,
not hostname.
It looks like it's portmap version 4.0-3. The kernel being used is
2.0.27.
If this isn't the proper place to make the bug report, please
forward it...
Regards,
PeterM
1. rpc.portmap checks /etc/hosts.allow?
The portmapper on Linux does indeed check /etc/hosts.allow and deny.
It (on most versions of Linux I've seen) is Wietse Venema's secure
portmapper which uses his tcp_wrapper package, just like all your
inetd services do. You can get all the source from ftp.win.tue.nl in
pub/security.
I built the latest one, and put a line starting "portmap:" on the end
of my /etc/hosts.allow.
Hope this helps,
Jules.
--
Electronics Department ___ __o WWW: http://elstar.ecs.soton.ac.uk/Jules
Southampton University ___ -\<, Tel: 01703 593021/594494
Southampton SO17 1BJ, UK .....O/ O Fax: +44 (1703) 592865
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