Not sure if this is the correct forum or not so please accept my
apologies if not and point my to the correct place.

I have a subnet of 5 public IP addresses assigned by my ISP.
24.xxx.xxx.138 - 24.xxx.xxx.142. The first address is assigned to the
public NIC in the BM server. The other 4 are secondary IP addresses on
this BM server and are static NATed to internal hosts. When I ping any
of these 5 addresses from either side of the BM firewall, I get a reply
back from the appropriate public address.

But, if I ping 24.xxx.xxx.143, which is NOT part of my subnet, from
inside the firewall, I get a reply from 192.168.0.2 which is the private
side NIC of the BM server. A ping to 24.xxx.xxx.143 from outside
receives no response. I cannot find the .143 address anywhere in my
configurations.

I don't really have a problem with this but it's a little weird. How do
I correct this?

Thanks!
Todd