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Date:      Fri, 20 Mar 1998 15:18:23 +1100
From:      Dewayne Geraghty <Dewayne.Geraghty@digital.com>
To:        "'Graphic Rezidew'" <rezidew@rezidew.net>
Cc:        freebsd-security@FreeBSD.ORG
Subject:   RE: I need some proxies! :)
Message-ID:  <B1977B6CC366D11195D30000F89CBDDF2D4354@snoexc1.dhcp.sno.dec.com>

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I think that the problem needs further clarification.

To answer your question, Graphic.  You'd put a proxy behind the firewall
to minimize the types of attacks that can be launched against the proxy.
If the proxy has nothing but the proxy software, then this is a pretty
fair solution.

A slight improvement on this stratgy is to place a relay on the outside
of the firewall which is permitted, via the firewall, to only access the
internal proxy server.  

internet - (external proxy relay/bastion host) - filter gateway -
internal proxy server - internal backbone

Some books call these different things: here the "proxy server" is
internal, and the "proxy relay" is external.

BTW: squid's a good choice for the internal proxy/cache server - but as
I'm very new to FreeBSD (and UNIX in general), I'm unsure of what
applications provide relay services?

Kind regards, Dewayne.

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