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.)
dcrocker a t ...
WE'VE MOVED to: www.bbiw.net