From owner-freebsd-doc  Wed Jul  7 22: 7:51 1999
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					July 7th,1999
Worshipful SIR:
    I ask for advice about a problem in FreeBSD4.4.
    That is the difference between ipfilter(including 
ip_fil.c ,etc) and ipfw(including ip_fw.c) facility .
    Is the ipfilter a proxy firewall ? Thereinto,what is
group ? Can you explain it by some examples? 
    Is the ipfilter facility a advanced substitute of the 
ipfw?
    Which advantages do they have respectively?
  
    RSVP.
				Sincerely liubq
     

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