From mi@ALDAN.star89.galstar.com  Fri Dec 22 22:19:23 1995
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Date: Sat, 23 Dec 1995 01:17:40 -0500
From: mi@ALDAN.star89.galstar.com
Reply-To: mi@ALDAN.star89.galstar.com
To: FreeBSD-gnats-submit@freebsd.org
Subject: connecting from one FreeBSD machine to another
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>Number:         910
>Category:       bin
>Synopsis:       Connection times out
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    wollman
>State:          closed
>Quarter:
>Keywords:
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Fri Dec 22 22:20:01 PST 1995
>Closed-Date:    Thu Feb 8 10:05:31 PST 1996
>Last-Modified:  Thu Feb  8 10:06:11 PST 1996
>Originator:     Mikhail Teterin
>Release:        FreeBSD 2.1-STABLE i386
>Organization:
>Environment:

	The machine I'm trying to connect to is connected to the
	Internet thru one ppp-link (pppd is used).
	One of the "from"-machines tried was connected thru user's ppp.
	Another one -- ethernetted machine with a constant IP-address
	Both "from" machines run 2.1-Release

>Description:

	Direct connection on telnet, ftp and X ports times out (did
	not test other ones). To connect from work, I have to first
	login to the Sun machine on the same net (the Sun is not
	any different from the net point of view -- it is not a
	server of any kind, and stands behind the same firewall on
	the same net (first three bytes of IP number, and netmask
	are same). Connection from the Sun goes right a way...

	Here is a little picture of how it looks on the "to"-machine
	(with my comments):

mi@aldan:~ (33)	ps -axl | grep telnet
    0 28843    81   0   2  0   192  496 netio  I    ??    0:00.08 telnetd
    0 28849    81   0   2  0   232  528 select S    ??    0:00.47 telnetd
mi@aldan:~ (34)	netstat -a | grep telnet
tcp        0      4  PPP-72-5.BU.EDU.telnet 128.191.56.82.32797    ESTABLISHED
tcp        0     15  PPP-72-5.BU.EDU.telnet kot.1117               ESTABLISHED
tcp        0      0  *.telnet_b             *.*                    LISTEN
tcp        0      0  *.telnet               *.*                    LISTEN

	The first process is the "forever-waiting" telnetd (telnet-client
	on the "from machine" says "Connected to ..." and never gives a 
	login-prompt). The second process is working telnetd, which made
	the whole picture possible. The second telnetd works with the Sun's
	telnet client.

	PPP-72-5.BU.EDU is the temporary name of the "to"-machine (perfectly
	functional otherwise). 

>How-To-Repeat:

	Try to connect (on telnet, ftp, or X port) to the FreeBSD machine,
	with dynamicly assigned IP-address from another FreeBSD machine.
	Note, that both "from"-machines running Windows NT can perfectly
	connect to the same FreeBSD running "to"...
	E-mail me for the current name/ip-address of my machine to try.
	mi@ALDAN.star89.galstar.com

>Fix:
	
	

>Release-Note:
>Audit-Trail:

From: David Greenman <davidg@Root.COM>
To: mi@aldan.star89.galstar.com
Cc: FreeBSD-gnats-submit@freebsd.org
Subject: Re: bin/910: connecting from one FreeBSD machine to another 
Date: Fri, 22 Dec 1995 22:40:59 -0800

 >	The machine I'm trying to connect to is connected to the
 >	Internet thru one ppp-link (pppd is used).
 >	One of the "from"-machines tried was connected thru user's ppp.
 >	Another one -- ethernetted machine with a constant IP-address
 >	Both "from" machines run 2.1-Release
 
    Did you try setting tcp_extensions to "NO" in /etc/sysconfig?
 
 -DG
Responsible-Changed-From-To: freebsd-bugs->wollman 
Responsible-Changed-By: pst 
Responsible-Changed-When: Wed Feb 7 16:58:33 PST 1996 
Responsible-Changed-Why:  
Spun the dice, either it's an iijppp problem or tcp extensions problem. 
tcp extensions lost. 
State-Changed-From-To: open->feedback 
State-Changed-By: wollman 
State-Changed-When: Thu Feb 8 08:00:21 PST 1996 
State-Changed-Why:  
Did you try setting tcp_extensions to "NO" in /etc/sysconfig? 
If so, did it change anything? 
Does the problem still exist? 
State-Changed-From-To: feedback->closed 
State-Changed-By: wollman 
State-Changed-When: Thu Feb 8 10:05:31 PST 1996 
State-Changed-Why:  
Submitter reports problem solved. 
>Unformatted:
