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Re: DHCP from behind a gateway?

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Gabriel Mastico (feverish@grandfunkhighway.com)
Fri, 05 Jan 2001 07:38:29 -0800


> I am a little vague with natd(8), but the one parameter that would possibly
> allow this could be the combination of '-interface -alias_address address
> -target_address address', if I am reading it correctly. Correct me if please if
> you know I am not.

are you referring to -redirect_address internal.address:port-port port2-port2
where internal.address is the host you wish to forwardto, port-port is the port range
you wish to forward to on internal.adress, and port2-port2 is the port range on the
outside interface?
that's how it is in 4.2, at any rate

Anyway, that only works for the external interface. ie, it will only bind the forwarded
ports on the internet-side, and not the LAN-side. The only way I can think of to do this
with the FreeBSD box is to forward all traffic with udp source port 68 to the telus
DHCP server. Only reason I'm not exactly keen on doing this is the probability of
interference with the dhclient running on the FreeBSD box :(

This leave me to think that an entry in dhcpd.conf is the only way to accomplish this :(
Only problem is, I can't find any documentation telling me if this is (im)possible :(

Thanks again,
        Gabe

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