RE: RE: [rapt] FTP problem - Raptor Solaris firewall and NT4 SP6 ftp servers

[shewitt () cdw com]

Microsoft documents all the changes in each service pack.  It is usually
found on the same page that you access the service pack on.  
For instance, on the Service Pack 6a page:
http://www.microsoft.com/ntserver/nts/downloads/recommended/SP6/allSP6.asp

There is a bullet point under "Learn More" with these links:

  List of Bugs Fixed in Windows NT 4.0 Service Pack 6/6a (Part 1)
     http://support.microsoft.com/support/kb/articles/q241/2/11.asp

  List of Bugs Fixed in Windows NT 4.0 Service Pack 6/6a (Part 2)
     http://support.microsoft.com/support/kb/articles/q244/6/90.asp

I hope this helps.

--Scott

> -----Original Message-----
> From: tbh1 [mailto:tbh1 () bellsouth net]
> Sent: Thursday, September 21, 2000 6:08 AM
> To: 'Wildt, Bob'; 'raptor-list () firetower com';
> 'firewall-wizards () nfr net'
> Cc: Moles, Robert
> Subject: [fw-wiz] RE: [rapt] FTP problem - Raptor Solaris firewall and
> NT4 SP6 ftp servers
>
>
> Bob -
>
> There are documented and admitted TCP stack problems with FIN 
> packets in 6a 
> (which is I assume what SP you are talking about).  I am not 
> aware of them 
> issuing a fix for this yet, but I would suspect that there 
> will be a SP6b 
> sometime soon, as this problem has been known for at least 90 days.
>
> 6 (with no a) is a huge TCP stack mess.  5 has it's problems 
> also.  4 is 
> relatively clean.
>
> Let's not get started about what a peice of crap Win2000 is 
> behind the 
> scenes.
>
> This discussion should be aimed at Microsoft to document 
> clearly what a 
> service pack does.  Each one makes hundreds or thousands of 
> changes, and to 
> this point at least, they will not tell you what all the service pack 
> changes.
>
> Tom Hutton
> eCommSecurity
>
> -----Original Message-----
> From: Wildt, Bob [SMTP:WildtB () kochind com]
> Sent: Wednesday, September 20, 2000 11:09 AM
> To:   'raptor-list () firetower com'; 'firewall-wizards () nfr net'
> Cc:   Moles, Robert
> Subject:      [rapt] FTP problem - Raptor Solaris firewall 
> and NT4 SP6 ftp 
> servers
>
> 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
>
>
>
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