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Newsgroups: comp.unix.bsd.freebsd.misc Path: sserve!newshost.anu.edu.au!harbinger.cc.monash.edu.au!simtel!oleane!tank.news.pipex.net!pipex!news.mathworks.com!gatech!swrinde!elroy.jpl.nasa.gov!lll-winken.llnl.gov!uop!csus.edu!netcom.com!mikenel From: mikenel@netcom.com (Michael Nelson) Subject: Re: Telnetd bug or mis-feature? Message-ID: <mikenelDCLyJ6.Kvp@netcom.com> Organization: Say what?! Organization??? X-Newsreader: TIN [version 1.2 PL2] References: <3vf2br$3di@ector.cs.purdue.edu> Date: Tue, 1 Aug 1995 01:23:30 GMT Lines: 36 Sender: mikenel@netcom8.netcom.com David Moffett (dpm@cs.purdue.edu) wrote: : Sometime ago, there was a question about telneting INTO a FreeBSD box : yielding confused results. I didn't pay attention or my site's news : spool splatted because I don't remember seeing an answer. : Symptoms: : * telnet always connects : * the negotiated duplex/echo is usually confused. : - Sometimes the FreeBSD box thinks that it needs to echo each line after : return is pressed. : - Sometimes the connection works OK. : - Sometimes the connection is negotiated such that the FreeBSD box : thinks there is a half duplex/local echo connection, and thus : no one echos the keystrokes. : - text originally generated on the FreeBSD side is always correct. : * ftp from the same DOS box works just fine. : I just installed FreeBSD 2.0.5R from CDROM. Previously I was running : 2.0.0R. Problem is true on both O/Ses. The caller is NCSA telnet for : DOS which can be fetched from their ftp site. NCSA Telnet is broken. Newer BSDs implement some of the newer features in the TELNET RFC's. Unfortunately this breaks some of the less-up-to-date TELNET programs. NCSA is aware of the problem (I believe they even mention it in the docs) -- but there is no guarantee that it will ever be fixed. : I wandered into the telnetd sources (in 2.0.0R) and there is some : discussion of a previous BSD bug in telnetd causing such a problem. : Ditto for the 'bugs' section of the man page. -- Mike -- -- Michael Nelson (mikenel@netcom.com) | Through the firewall, off the router, Rockville, Maryland | over the ATM backbone, nothing but BSD/OS, WinNT, Linux Development | 'net.