nanog mailing list archives

Re: "firewalls" at high speed -- was Re: FW: your mail


From: "Alex P. Rudnev" <alex () Relcom EU net>
Date: Mon, 27 Sep 1999 16:46:18 +0400 (MSD)


Perfectly... 


On Mon, 27 Sep 1999, Howard C. Berkowitz wrote:

Date: Mon, 27 Sep 1999 08:27:27 -0400
From: Howard C. Berkowitz <hcb () clark net>
To: nanog () merit edu
Subject: "firewalls" at high speed -- was Re: FW: your mail


...


All good points. Something else to consider:  with increasing cryptographic
security requirements, the "firewall" (ambiguous term as it is, but let's
think of it as a stateful packet screen -- the major approach at high
speed) is not the only device between you and the outside.  It's worth
thinking of:

   Bastion hosts -- not trusted with crypto keys
   Security gateways -- trusted to do encryption
     IPsec gateways
     SSL/TLS proxies
   Conduits with access lists -- for host-to-host encryption, where
                                 the firewall wouldn't add value

There is also the very murky area where logging and intrusion detection
mix, and whether they can operate at these speeds/



Aleksei Roudnev, Network Operations Center, Relcom, Moscow
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