I have the following network and I was wishing some comments on it's
The IPs (except for office and DMZ) correspond to NICs as well as an
outside IP for a serial card on a cisco router.
Internet ISP Gateway [x.x.x.d1]
---> Cisco Router [x.x.x.d2 (outside IP ) | y.y.y.d1 (inside IP)]
---> OBSD FW [ y.y.y.d2 (out IP) | (192.168.1.1,192.168.2.1) (2 in
---> (192.168.1.x (DMZ), 192.168.2.x (office) ]
That is the OBSD takes the ethernet connection from the cisco router
and communicates with 2 sub-networks. The x.x.x and y.y.y are
Should I consider using only the outside IP address of the Cisco
as the only internet addressable address in such a system and if so,
how do I go about assigning IPs in the network which would be more
My naive sense of security is telling me the less internet
IPs in your system, the better this is for system security.
Thanks for any comments or suggestions or related links