Bug 21310

Summary:	Telnetd locks up when trying to connect via NCSA telnet (DOS)
Product:	Base System	Reporter:	pino <pino>
Component:	misc	Assignee:	Mike Heffner <mikeh>
Status:	Closed FIXED
Severity:	Affects Only Me
Priority:	Normal
Version:	Unspecified
Hardware:	Any
OS:	Any

Description pino 2000-09-16 14:30:03 UTC

Granted, this is not really a bug in FreeBSD 4.1, but it *used* to work with previous releases:

NCSA Telnet (the old DOS program) does not reply with a "DONT" to unknown WILL-options. This locks up telnetd, since it waits for the negotiation to settle.

How-To-Repeat: use the archaic DOS-based NCSA Telnet, and try to connect to a host running FreeBSD 4.1. Telnetd will lock up, before even displaying a login message.

Comment 1 Mike Heffner freebsd_committer

2001-06-29 04:15:59 UTC

State Changed
From-To: open->feedback

This sounds like a bug in the NCSA client. Is this still a problem 
with a newer client?

Comment 2 Mike Heffner freebsd_committer

2001-06-29 04:15:59 UTC

Responsible Changed
From-To: freebsd-bugs->mikeh

I'll followup.

Comment 3 Mike Heffner freebsd_committer

2001-10-02 06:34:01 UTC

State Changed
From-To: feedback->closed

Feedback timeout.