Re: ipmask & firewall manual
On Thu, Dec 07, 2000 at 11:05:07AM -0800, Jaye Inabnit ke6sls wrote:
> I need some real help sorting out packet rules, ipmasking and firewalling.
> I would like to find a manual that will break packets down to the basics and
> help the student learn the most basics then bring them up to date with current
> operations for masq and firewall. I have the howto's and man pages here, but
> these are beyond my understanding - too much is assumed that the read should
> already konw - yet this reader doesn't :|
>
> Second - with help, I was able to get ipmasking and firewall up, but 2
> programs I like to use don't work past the firewall - they are speakfreely
> and gphone. I have these lines in my file now:
> # Lines added for SpeakFreely v6.1b
> #
> ipmasqadm autofw -A -r udp 2074 2075 -c udp 2075
>
> I found them on a web search but they are for the 2.0.36 kernel not 2.2.17 and
> aren't working for me here. Help greatly appreciated.
a point of distinction -- it's not MASK, it's MASQUERADE, or
MASQ for short. packet A gets munged at the firewall/router
so that it MASQUERADES as if it were actually packet B;
the reply then gets re-munged back from B-reply into A-reply,
masquerade-like.
as for the newbie approach to ip-masquerading on debian,
i'd make sure to install the ipmasq package:
apt-get install ipmasq
and much of your headaches and sweat will go away.
there's also much code to look at there, too. makes
for better learning, to see code examples, i think.
--
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