Firewall Wizards mailing list archives
Strange NAT entries on the PIX
From: user <nguyen () evergreen edu>
Date: Mon, 07 Apr 2003 16:00:24 -0700
Sorry about the HTML mail attempt. They won't let me turn off automatic HTML on our server. I think this client will avoid the problem. While researching a NAT pool exhaustion problem, I came across a number of strange NAT pairs. Essentially, addresses in the global pool are turning up on the local side, mapped to a different address in the outside pool. They are usually paired to the next address in sequence, but there are a few exceptions. Examples: Global x.x.25.180 Local x.x.25.179 Global x.x.25.181 Local x.x.25.180 Global x.x.25.182 Local x.x.25.181 etc. for a block of 10-20 addresses. I'm trying to get my head around what kind of protocol might be generating this pattern. I suspect it's a peer-peer file transfer pattern, since it seems to be primarily in our dorms network. Any clues would be appreciated. Joe Pollock Network Services The Evergreen State College _______________________________________________ firewall-wizards mailing list firewall-wizards () honor icsalabs com http://honor.icsalabs.com/mailman/listinfo/firewall-wizards
Current thread:
- Strange NAT entries on the PIX user (Apr 08)
- Re: Strange NAT entries on the PIX Lisa Napier (Apr 08)
- Re: Strange NAT entries on the PIX Dave Rinker (Apr 08)