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Date:      Thu, 02 Mar 2000 09:37:47 -0500
From:      Peter Schwenk <schwenk@math.udel.edu>
To:        arnee <arnee@geocities.com>
Cc:        freebsd-questions@freebsd.org
Subject:   Re: ipfw & ipf, ppp & pppd, natd & ipnat... differences?
Message-ID:  <38BE7CBB.DB028F3C@math.udel.edu>
References:  <38BDCCF1.312F2D3B@geocities.com>

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These are how I understand these topics.  I may be wrong.

ppp filtering vs. ipfw/ipf:
    I you are using user ppp, then use it's filtering.  If you are using
kernel ppp, then use ipfw/ipf.

bpf is the pseudo-device for using tcpdump and utilities like that.

I don't know anything about ipnat.  I use natd.

ppp vs pppd:
    ppp is user ppp, which needs the tun device to work.  pppd is used in
conjunction with kernel ppp support.  User ppp seems to be more featureful,
but I would imagine that kernel ppp is better for full-time connections.

tcp_wrappers vs. inetd -wW:
    tcp wrapping is built into inetd which precludes the need for the tcp
wrappers program.

arnee wrote:

> this is some what of a broad question, but out of curiosity... what are
> the differences between these programs? or rather, which one do you use?
> which one do you prefer and why? or when to use one over the other?
>
> ppp's filtering vs ipfw, ipf?
> what about bpf?
> natd vs ipnat?
> ppp vs pppd?
> tcp wrapper vs identd -wW?
>
> which one would you use with what (e.g. ppp with ipnat or pppd with
> ipf... etc.) or are they all interchangeable?
>
> comments, thoughts, ideas? or other programs used similar to the above?
>
> --
> arnee
>
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--
PETER SCHWENK                        | Campus IT Associate 3
Department of Mathematical Sciences  | University of Delaware
schwenk@math.udel.edu                | (302)831-0437





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