Firewall & Routing - help!
Nigel Wade
nmw at ion.le.ac.uk
Fri Jun 11 08:59:39 UTC 2004
Kevin F. Berrien wrote:
> With the help of many on the previous thread (Firewall - Very limited
> Access - suggestions), I've built my firewall using fwbuilder & FC1. At
> present I've got it set up in a test environment. The firewall seems to
> be operating correctly with one exception, but my real problem is with
> my routing. I've always been terrible with routing.... At present, I
> can't traverse from a workstation on the "internal" subnet to host on
> "external" subnet, or internet.
>
> I am not using NAT on this firewall, it just bridges two subnets -
Just a note to point out that a "bridge" connects two segments of the *same*
subnet; a router routes between different networks (including sub-nets). So
your firewall is actually routing between the subnets, not bridging them.
If you've checked the "bridging firewall" option in fwbuilder you should
turn it off, if fwbuilder thinks it's a bridging firewall it may generate
incorrect rules.
--
Nigel Wade, System Administrator, Space Plasma Physics Group,
University of Leicester, Leicester, LE1 7RH, UK
E-mail : nmw at ion.le.ac.uk
Phone : +44 (0)116 2523548, Fax : +44 (0)116 2523555
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