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FTP problem - Raptor Solaris firewall and NT4 SP6 ftp servers
From: "Wildt, Bob" <WildtB () kochind com>
Date: Wed, 20 Sep 2000 10:09:12 -0500
I'm looking for anyone else that may be experiencing this problem or any insight into it. I have two Axent Raptor firewalls (v5.0.3 and v6.0.2 on Solaris 2.6) that exhibit this problem. FTP sessions initiated by the firewall to NT4 SP6 servers will often hang waiting for a data channel (port 20) FIN packet. It appears that the FIN packet is coming out of sequence when compared to a successful command, which causes the session to hang. The problem is internittent but consistent. It may fail on the 1st command of a session or on a later command. It almost always fails with 6 or 7 commands. I have the problem only between my Raptor firewalls and NT4 service pack 6 servers (3 different NT servers so far). One of our partners upgraded to SP6 last weekend and ftp transfers that had been running flawlessly are now hanging. I don't know if this happens to all NT4 SP6 servers we connect to, but it does seem to be a pattern. I have been working with Axent support on this, but they are having trouble recreating the problem. If you can answer any of these questions, I would appreciate a response. 1) Any other Axent Raptor users out there that are experiencing similar problems? 2) Has anyone other than Raptor users had similar problems communicating with NT4 SP6 servers? 3) Does anyone know of specific changes made in NT service pack 6 as pertains to their TCP/IP stack? Thanks. - - - - - - - - - - Bob Wildt UNIX and Mainframe Systems Koch Industries Inc. wildtb () kochind com 316-828-6970 _______________________________________________ Firewall-wizards mailing list Firewall-wizards () nfr net http://www.nfr.net/mailman/listinfo/firewall-wizards
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- FTP problem - Raptor Solaris firewall and NT4 SP6 ftp servers Wildt, Bob (Sep 20)