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From: "Brett Serkez" <techie AT serkez DOT net>
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Subject: Re: ZoneAlarm Suite popen hang
In-Reply-To: <Pine.GSO.4.63.0601092040390.29429@slinky.cs.nyu.edu>
Date: Mon, 09 Jan 2006 21:12:39 -0500
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[snip]
> Well, if you can find where ssh is invoked, you can also give it the
> "-n" parameter, which would result in equivalent functionality.

I don't want to confuse anybody, the command in question is being run
internally by ssh to setup an X authorization cookie to pass over the
the xterm on the remote system.  I did try -n to no avail.

ssh -vvv -n -X target
OpenSSH_4.2p1, OpenSSL 0.9.8a 11 Oct 2005
Pseudo-terminal will not be allocated because stdin is not a terminal.
debug1: Reading configuration data /etc/ssh_config
debug2: ssh_connect: needpriv 0
debug1: Connecting to 192.168.0.100 [192.168.0.100] port 22.
debug1: Connection established.

...snip...

debug1: Authentication succeeded (password).
debug2: fd 4 setting O_NONBLOCK
debug1: channel 0: new [client-session]
debug3: ssh_session2_open: channel_new: 0
debug2: channel 0: send open
debug1: Entering interactive session.
debug2: callback start
debug2: x11_get_proto: /usr/X11R6/bin/xauth -f
/tmp/ssh-1X7a4Jwi47/xauthfile generate 127.0.0.1:0.0 MIT-MAGIC-COOKIE-1
untrusted timeout 1200 2>/dev/null

The message I referenced earlier goes into some depth about
x11_get_proto and how the xauth command above is being run:

http://www.cygwin.com/ml/cygwin/2004-11/msg00626.html

Perhaps popen is using a socket or named pipe????

I do appreciate the suggestions so far.  I just don't yet understand
how the installation and deinstallation of ZoneAlarm is effecting
this behavior.

Brett
----------------------------------------------------------------
Brett C. Serkez, Techie



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