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Path: euryale.cc.adfa.oz.au!newshost.anu.edu.au!harbinger.cc.monash.edu.au!simtel!daffy!uwvax!uwm.edu!hookup!newshost.marcam.com!news.mathworks.com!newsfeed.internetmci.com!news.sprintlink.net!howland.reston.ans.net!news2.near.net!msgi.com!msgi.com!not-for-mail From: gryphon@msgi.com (Coranth Gryphon) Newsgroups: comp.unix.bsd.freebsd.misc,comp.protocols.tcp-ip Subject: Firewalls, Filters, and Routers, oh my.... Date: 9 Aug 1995 16:31:01 -0400 Organization: MSG, Inc. (Burlington, MA) Lines: 33 Message-ID: <40b5u5$2er@hydra.msgi.com> NNTP-Posting-Host: hydra.msgi.com Xref: euryale.cc.adfa.oz.au comp.unix.bsd.freebsd.misc:4539 comp.protocols.tcp-ip:38166 Hi. I am trying to determine how to do the following (using a FreeBSD box): ISP <-ppp-> [router] <---> BSD <-ether-> network The [router] is optional if the BSD box does everything I need. What I want to know is whether the BSD box with some software can do packet filtering (roughly equivalent to what a router can do) between the ISP and my network, whether I have to use the router to do the filtering, or if I want the BSD box to do it, do I have to go all the way and set up a firewall package? The same question applies for this configuration: Subnet1 <-ether-> [BSD | bridge] <-ether-> Subnet2 We need to do packet filter (again, equivalent to a router) between the two subnets. Can FreeBSD with some software do this, or do we need a black-box bridge? Again, is firewall software the only option for the BSD box, or is there filtering software available. For this case (and/or the first one) we can use 2 ethernet cards if needed. Thanx. -coranth ------------------------------------------+------------------------+ Coranth Gryphon <gryphon@healer.com> | "Faith Manages." | | - Satai Delenn | Phone: 603-598-3440 Fax: 603-598-3430 +------------------------+ USMail: 11 Carver St, Nashua, NH 03060 Disclaimer: All these words are yours, except Europa...