Date: Mon, 16 Aug 2004 18:51:34 -0400 From: Chuck Swiger <cswiger@mac.com> To: Paul Hillen <PHILLEN@NFM.NET> Cc: freebsd-questions@freebsd.org Subject: Re: Application level inspection - firewall? Message-ID: <41213A76.3010107@mac.com> In-Reply-To: <2D5D66504FBF4E4FB3A199F121C86238225A2A@exch1.nfmwe.com> References: <2D5D66504FBF4E4FB3A199F121C86238225A2A@exch1.nfmwe.com>
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Paul Hillen wrote: > Quick question, is there an Application Level firewall available to FreeBSD. For some definitions of that buzzword, sure. > I understand IPFilter is a stateful packet filter, but has it or any other > packages moved to the next level - Application Level Inspection? Squid plus a firewall which blocks or redirects port 80 will serve for HTTP; Postfix or Qmail or whatever plus firewall rules which do the same for port 25 serve as application-level filtering for SMTP (enough to protect that Exchange server some people want to run), etc. -- -Chuck
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