nanog mailing list archives
Re: Security gain from NAT
From: Valdis.Kletnieks () vt edu
Date: Tue, 05 Jun 2007 21:44:41 -0400
On Tue, 05 Jun 2007 17:44:40 PDT, Roger Marquis said:
Sure, very easily, by using NAT between the subnets.Have at it. Nothing like trying to reach 10.10.10.10 nad having to put in a dns entry pointing to 172.29.10.10End-users prefer hostnames to IPs. DNS hostnames are valid on both sides due to either local zone files or a DNS protocol-NAT. It's a no-brainer to implement and a lot easier than using public address space given the relatively complex firewalling and filtering that requires.
So now the cruft extends and embraces, and you have to play DNS view games based on whether it's on company A's legacy net, company B's legacy net, or the DMZ in between them, and start poking around in the middle of DNS packets to tweak the replies (which sort of guarantees you can't deploy DNSSEC). And if the company aquires *another* one with rfc1918 on their legacy net, then you get to play "as seen from A, B, or C, or this DMZ, or that DMZ".. I think somebody on this list mentioned that due to corporate acquisitions, there were legitimate paths between machines that traversed 5 or 6 NATs. But yeah, "Sure, very easily". Whatever you say...
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Current thread:
- Re: Security gain from NAT Roger Marquis (Jun 04)
- Re: Security gain from NAT Donald Stahl (Jun 04)
- Re: Security gain from NAT brett watson (Jun 04)
- <Possible follow-ups>
- Re: Security gain from NAT Roger Marquis (Jun 05)
- Re: Security gain from NAT Donald Stahl (Jun 05)
- Re: Security gain from NAT Donald Stahl (Jun 05)
- Re: Security gain from NAT Roger Marquis (Jun 05)
- Re: Security gain from NAT Valdis . Kletnieks (Jun 05)
- Re: Security gain from NAT Roger Marquis (Jun 05)
- Re: Security gain from NAT Bill Stewart (Jun 06)
- Re: Security gain from NAT Nathan Ward (Jun 06)
- Re: Security gain from NAT Donald Stahl (Jun 05)
- Re: Security gain from NAT Stephen Sprunk (Jun 06)
- Re: Security gain from NAT David Conrad (Jun 06)
- Re: Security gain from NAT Mark Smith (Jun 06)
- Dead Thread (Re: Security gain from NAT) alex (Jun 06)
- Re: Security gain from NAT Donald Stahl (Jun 04)
- Re: Security gain from NAT Nathan Ward (Jun 06)