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Network Security Firewalls
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NAT logging

from [Erik Norgaard] Network Security [Permanent Link]
Subject: NAT logging
Date: Tue, 31 Aug 2004 12:13:22 +0200 
Hi,

Recent changes in danish law requires ISP's - even small ones - to log traffic data and store it for a year. The following needs to be logged:

* Initiation of connection, source and destination address
* Termination of connection
* Change of identity, (eg. when using NAT)

The first part is easy. The second can be done. The problem is the third: All firewalls I know of does not have the ability to log entries in the NAT table, all three tasks could be done if a log was written when a connection was entered into the NAT table and when it was removed.

Does anyone know of a firewall product with this capability?

Thanks, Erik

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