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Re: [FW-1] Nat.. I think



Hi,
We had a similar problem some time ago and reconfigured our NAT rules leaving the translation only for the public network (Internet). Now, connections to the network segment where the Exchange and file servers are, are done without natting. I think that UDP and NAT don't work well together (NETBIOS used in window based applications).
Hope it helps,
Meryan
 
-----Original Message-----
From: Larry Rogers [mailto:[email protected]]
Sent: Thursday, May 16, 2002 12:15 PM
To: [email protected]
Subject: Re: [FW-1] Nat.. I think

Sorry about the lack of info in the last transmission. I was rushed to go to a meeting and did not mean to send the email out. No VPN Client is used.

 

I know that the machines that are having problems are Win2000 machines. However, it is not every Win2000 machine, which throws me off. Most machines are just fine. It is just about 4 users that is having the problem.  XP seems not to have the problem. Some of the Win2000 machines also have SQL2000 on them also.

 

It seems when the user go through the firewall to get to the internet and then tries to go a mapped drive then the connection is lost. However not every time.  It is like the firewall is confused on if the machine is truly inside the firewall or outside.

 

I would also be interested in the Microsoft Article, if you could provide further details that would be great.

 

If I still have not included enough detail, please let me know.

 

Thank you,

Larry Rogers

 

-----Original Message-----
From: Mailing list for discussion of Firewall-1 [mailto:[email protected]] On Behalf Of Mehta, Phoram
Sent:
Wednesday, May 15, 2002 2:32 PM
To: [email protected]
Subject: Re: [FW-1] Nat.. I think

 

If the server is win2k or SQL you are right it is NAT(Microsoft has admitted this to be a problem). from what you described if client and server are communicating through the firewall. you want to add a rule in your address translation tab:

 

client-network  server-network any original original

-----Original Message-----
From: Larry Rogers [mailto:[email protected]]
Sent:
Wednesday, May 15, 2002 5:44 PM
To: [email protected]
Subject: [FW-1] Nat.. I think

Hello all,

I am the new network admin here, and for about a year they have been living with a problem and now, all of a sudden it is a big issue. 

 

The issue is:  A user could being doing their normal task throughout the day and their mapped drives will loose connection.  The user clicks the drive and you get the standard " can not find "server" error. To fix this, I had the user just change their ip address and everything is fine.  That is why I think it is configuration problem with NAT. The question now is....  What is the problem? 


Any and all suggestions are appreciated.

 

Thank you,

Larry Rogers

 



 
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