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Re: mail service with no mx (was - Re: Computer systems blamed forfeeble hurricane response?)

  • From: Dave Crocker
  • Date: Wed Sep 14 02:11:22 2005




Application layer firewalls have existed for at least 6 years.

Make that 15....
I suspect that claiming to that they existed farther back than 1990 would require careful debate about the functionality.

Taking it at its most general: a boundary barrier service that mediated particular application exchanges between an "interior" Administrative Environment, versus the rest of the public network. One can reasonably argue than any such mediation has a security component to it.

Therefore one could argue that firewall functionality was around at least 25 years ago -- there were a number of email boundary gateway mediating services by then -- and very probably back to 1973. (I just know that some MIT type is going to claim pre-1970, given the generality of the definition I offered.)

d/
--

Dave Crocker
Brandenburg InternetWorking
+1.408.246.8253
dcrocker a t ...
WE'VE MOVED to: www.bbiw.net




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