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List:       freebsd-questions
Subject:    Re: dhcp and firewalls
From:       David Kelly <dkelly () hiwaay ! net>
Date:       2000-12-31 20:19:58
[Download RAW message or body]

Please don't send html to mail lists. My reply at the end.

"J.R." writes:
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> when writing firewall rules, how does one simply establish "oip", when > the \
> outside IP is dynamic as with Cogeco cable? thanx
> J.R.  
> 
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> <DIV><FONT face=Arial size=2>when&nbsp;writing&nbsp;firewall rules, > how does one 
> simply establish "oip", when the outside IP is dynamic as with Cogeco 
> cable?</FONT></DIV>
> <DIV><FONT face=Arial size=2>thanx</FONT></DIV>
> <DIV><FONT face=Arial > size=2>J.R.&nbsp;&nbsp;</FONT></DIV></BODY></HTML>
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> ------=_NextPart_000_0007_01C0730F.4B459950--

This works for me:

        nic="fxp0"
        ip=$(/sbin/ifconfig $nic | grep netmask | awk '{print $2}')

Am experimenting with an /etc/dhclient-exit-hooks file to see if I can
re-init my firewall on address change. The only hairy thing is one
doesn't want to reset the firewall unless the address really changed.

For details see my posting on -questions, Dec 12, 2000.

--
David Kelly N4HHE, dkelly@hiwaay.net
====================================================================The human mind \
ordinarily operates at only ten percent of its capacity -- the rest is overhead for \
the operating system.




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