1 WAN Routing Issue

jinxwad · Sep 24, 2012, 4:11 AM

I'm going to do my best to explain this. I have a single business internet connection, i have 8 static ip addresses. Here is the layout

My static addresses are
x.x.x.9
x.x.x.48-50
x.x.x.150-153

My WAN subnet is 255.255.255.0
My WAN gateway is x.x.x.1

My cable modem goes to a switch that goes to three devices, sonicwall for users (Wan .50), transparent sonicwall for servers (Wan 150-153), and pfsense firewall for testing (Wan .49).

The world and sonicwall for users can access all the addresses on the WAN subnet (.9 and .150-153). But when i'm behind the pfsense firewall i can ping the WAN gateway (.1) and the world (google) but i cant access any devices on the WAN subnet. I'm sure there is a setting somewhere that i'm missing. Any ideas where to look?

marcelloc · Sep 24, 2012, 6:53 AM

Fist, check firewall and nat rules.
Second, use tcpdump to check what is happening with packages on wan interface.

cmb · Sep 26, 2012, 5:40 AM

Do you see the other devices under Diagnostics>ARP? Should show there with their correct WAN-side MAC address.

jinxwad · Sep 27, 2012, 11:15 PM

I feel like an idiot. A server that was installed a year ago and never used but running has the same ip address. Good to know that neither system told me there was a conflict. Thanks for the help.

marcelloc · Sep 28, 2012, 3:27 AM

Freebsd System logs alway show ip addresses switching mac.
Are you sure it didn't happen on your system ???