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Posted by E. on December 31, 2005, 5:11 pm
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> I'm looking for a commodity small LAN firewall / NAT box that would support
> a DHCP proxy feature on its *external* interface, and then send those DHCP
> requests to a specific host behind the arp.
>
> My application is that I have a Windows 2003 domain controller that I would
> like to have act as a DHCP server for the computers in its domain. The
> clients would be in front of a firewall / NAT and the domain controller
> would be behind the firwall / NAT. I want to find an NAT that would
> present a DHCP proxy on its external interface and send those requests to
> the domain controller.
>
> The existing firewall we have in place supports DHCP proxy only in a weak
> way. It also requires adding some additional software to the firewall that
> I don't particularly want running on the firewall. So I would run the DHCP
> proxy as a bypass to the existing firewall, just for DHCP only. No other
> traffic besides DHCP would go in or out of the new firewall.
>
> I see that Netopia's Cayman 3500 series supports a DHCP relay from
> *internal* machines to an outside DHCP server. Unfortunately, that's the
> opposite of what I need, unless I am ready to turn the firewall 180 degrees
> around and make the clients the internal network and the domain controller
> the external. That would require some very iffy configuration to make
> secure, if it could be done. My preference is to find a similar
> off-the-shelf product that already incorporate DHCP proxy as I describe it.
> I would prefer to not have to install UNIX and do anything custom. Due to
> time limitations, off the shelf is what I need.
>
> Does this product exist?
>
Why are you trying to do things this way? If they are domain clients why
not stick them on the same subnet?
E.
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