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Date:      Wed, 27 Mar 2002 14:31:38 -0000
From:      "Martyn Hill" <sysadmin@st-james-snrgirls.w-london.sch.uk>
To:        "FreeBSD-questions" <freebsd-questions@freebsd.org>
Subject:   Cable-modem, dynamic IP, NAT and IPFW
Message-ID:  <002b01c1d59c$1c7c30c0$0a00000a@stjames.net>

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Hi

Can anyone cast any light on the following:

I have set up a test-bench installation at home of FreeBSD 4.5, cable-modem (with Blueyonder) with dynamic IP, UserPPP (PPPoE)
running NAT, IPFW, BIND, DHCP, Exim, Samba and the Squid proxy software. The purpose behind the install is to avoid long hours
spent at school trying out new configurations on an otherwise working live system (static IP, but otherwise similar.)

Having read (and tried to digest) the various HowTos and mailing list postings re. configuring for dynamic IP, I'm getting no
joy connecting through the cable modem. The NIC MAC address has been registered with BY.

My question: Can you guide me to a HowTo that details a comparable setup to the BY setup above, or offer any pointers - I'm sure
that I've missed something obvious along the way and have gotten lost in the detail.

In particular, configuring IPFW for dynamic IP (I have a working ruleset for fixed IP); which of NATD or UserPPP NAT is
preferable (or easier) to configure/use and how best to configure the external NIC using the ISC DHCLIENT software.

Rather than forward all my current configuration files, please could you advise which are relevant and I'll provide those.

Thanks in advance.

Martyn Hill
ICT Teacher and IT Co-ordinator
St James Independent School
London


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