Date: Sat, 10 May 2003 12:48:35 -0500 (CDT) From: mark tinguely <tinguely@web.cs.ndsu.nodak.edu> To: hsu@FreeBSD.org, silby@silby.com, tinguely@web.cs.ndsu.nodak.edu Cc: Lars.Koeller@uni-bielefeld.de Subject: Re: Please, Urgent: Need ideas/help to solve PR bin/51586 Message-ID: <200305101748.h4AHmZY5031718@web.cs.ndsu.nodak.edu> In-Reply-To: <0HEO00C7TLEPTC@mta5.snfc21.pbi.net>
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> This has all the signs of a bug in rsh or one of the libraries it > uses. I asked Lars to try it with ssh instead and he reports that > it works with ssh. We should probably concentrate our search on rsh > code. ssh will not create second connection, nor will the local port be a restricted port (especially port 623). We can see the vscan1 host make an attempt to respond to the remote machine using local port 623 but that packet does not make it to the other machine. Either something happens to that packet after it goes through the BPF (ie, the interface transmission part of the device driver), or somewhere in the network. That is why I suggest another host on the same network as one of the other machines or a protocol analyzer on the network to see if that packet make it through the network. W. Richard Steven has sample networking programs that can be used if he does not want to write one (sock from TCP Illustrated Vol 1 comes to mind http://www.kohala.com/start/unpv12e/unpv12e.tar.gz). --Mark Tinguely
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