From owner-freebsd-questions  Wed Feb  4 22:17:47 1998
Return-Path: <owner-freebsd-questions@FreeBSD.ORG>
Received: (from majordom@localhost)
          by hub.freebsd.org (8.8.8/8.8.8) id WAA10688
          for questions-outgoing; Wed, 4 Feb 1998 22:17:47 -0800 (PST)
          (envelope-from owner-freebsd-questions@FreeBSD.ORG)
Received: from gdi.uoregon.edu (gdi.uoregon.edu [128.223.170.30])
          by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id WAA10675
          for <freebsd-questions@FreeBSD.ORG>; Wed, 4 Feb 1998 22:17:38 -0800 (PST)
          (envelope-from dwhite@gdi.uoregon.edu)
Received: from localhost (dwhite@localhost)
          by gdi.uoregon.edu (8.8.7/8.8.8) with SMTP id WAA17012;
          Wed, 4 Feb 1998 22:17:36 -0800 (PST)
          (envelope-from dwhite@gdi.uoregon.edu)
Date: Wed, 4 Feb 1998 22:17:36 -0800 (PST)
From: Doug White <dwhite@gdi.uoregon.edu>
Reply-To: Doug White <dwhite@resnet.uoregon.edu>
To: Uncle Flatline <flatline@pchb1f.gallaudet.edu>
cc: freebsd-questions@FreeBSD.ORG
Subject: Re: 7 questions/problems from a former Linux, new FreeBSD user
In-Reply-To: <Pine.BSF.3.96.980204180028.429A-100000@pchb1f.gallaudet.edu>
Message-ID: <Pine.BSF.3.96.980204221641.16875K-100000@gdi.uoregon.edu>
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII
Sender: owner-freebsd-questions@FreeBSD.ORG
Precedence: bulk
X-Loop: FreeBSD.ORG
X-To-Unsubscribe: mail to majordomo@FreeBSD.org "unsubscribe questions"

On Wed, 4 Feb 1998, Uncle Flatline wrote:

> > Sounds like tcp wrappers are on on the Linux box and your FreeBSD machine
> > is blocked out.  Also try disabling tcp_extensions in /etc/rc.conf.
> 
> "rlogin" works, as does "ncftp".  And the connection was fine when both
> machines were Linux.  The IP names and addresses have remained the same, as
> has my /etc/hosts.  However, I have not restored most of my other /etc
> files...  
> 
> Does the tcp wrappers theory still hold up with that evidence?  (As I
> mentioned, I dunno anything about tcp wrappers.)

If tcp wrappers are running, then the command line for telnetd in the
linux server's inetd.conf will be

tcpd telnetd 

tcpd logs all connections and can optionally block connections from
specified machines.  It's a good security thing to run, esp. on an
unsecure protocol such as telnet.

Doug White                              | University of Oregon  
Internet:  dwhite@resnet.uoregon.edu    | Residence Networking Assistant
http://gladstone.uoregon.edu/~dwhite    | Computer Science Major