Date: Wed, 21 Jul 2004 16:59:38 -0400 (EDT) From: "Steve Bertrand" <iaccounts@ibctech.ca> To: "Paul Hillen" <PHILLEN@NFM.NET> Cc: freebsd-questions@freebsd.org Subject: RE: Firewall, OpenVPN and Squid question Message-ID: <3724.209.167.16.15.1090443578.squirrel@209.167.16.15> In-Reply-To: <2D5D66504FBF4E4FB3A199F121C862382D08E8@exch1.nfmwe.com> References: <2D5D66504FBF4E4FB3A199F121C862382D08E8@exch1.nfmwe.com>
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> I would have to guess if a hardware firewall like Watchguard that offers VPN > also, that it would have to be beefer than that. Steve going back to your > initial response about the PIII 800MHz network, are you using a proxy for > the internal users or are they connecting directly to the firewall as their > only means of getting out? [At the main site] (Selected) users go to a content filter (squid+dansguardian) and it goes out to the net (through the fw). The content filter has a private IP, and in itself, it is protected with it's own localized ipfw rules for protection. The rest of the clients go directly through the pipe unrestricted through the firewall to the net. (I know I shouldn't do this with our own proxy, but that's how it is for now). > It seems most hardware firewalls do not include > a > proxy server, just NAT/VPN, which in this case the proxy would be on a separate internal machine anyway. Depends. I once used a Nortel dial-up NAT router box that had it's own built in web cache. Very small cache mind you, but it worked ok, especially on a 26.4Kb link. > > Comment about the ISA Server setup, which I actually like and not sure if > I > can pull off the same type of setup with FreeBSD. The setup is like this: > Yes, you can. Either with 2 BSD boxes replacing the ISA boxen, or with one BSD box configured with 3 NIC's -- 1 for Internet connection, 1 for Internal LAN, and the other from the DMZ. The DMZ NIC can have all sorts of good rules applied to it, and the internal net can be absolutely cut off for inbound traffic except for the VPN's. > External ISA Server (not actual ips) ISP / 10.10.10.6 > | > |-> Postfix Relay Server 10.10.10.5 > |-> TinyDNS for internet publishing 10.10.10.4 > |-> TinyDNS for internet publishing 10.10.10.3 > |-> Webserver 10.10.10.2 > | > |-> Internal ISA Server 10.10.10.1 / > 10.0.0.1 > | > |-> Exchange Server 10.0.0.2 > |-> TinyDNS internal publishing 10.0.0.3 > |-> TinyDNS internal publishing 10.0.0.4 > |-> Rest of internal servers and network etc... > > > External sites are actually creating a VPN tunnel with a VPN tunnel and it > works good, but the ISA Server gets to flaky after about a month of use. I > have rebuilt them more than ever thought I would. > > At this point I will be happy to just get the firewall and VPN to work, but > I like the additional layer someone would have to break through in the above > scenario. Like I said above, 2 boxes, or one box with 3 NIC's. Steve > >> Yes, but take into consideration disk reads/writes. It is possible to eliminate these tasks, and I have even done setups where everything was flashed onto a CF card (ro) (obviously w/o logging capabilities). I did a >> custom build, frequently referring to: >> http://neon1.net/misc/minibsd.html and put the system on an IDE->CF card >> converter. > >> Steve > _______________________________________________ > freebsd-questions@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to > "freebsd-questions-unsubscribe@freebsd.org" >
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