Transparent Public IP Address

[LeeWol]

Hi all,

I have a noob question.

I have a virgin modem connected directly to my switch & 2 firewalls connected to the switch via the WAN port from each firewall as I have them set-up in HA.

Virgin modem to switch port 1
Firewall 1 WAN to switch port 2
Firewall 2 WAN to switch port 3

The issue I'm having is the WAN ports on my firewalls are set to DHCP and are not getting my public IP address pushed through.

They either don't get an address or an internal IP after a reboot.

However, connecting the virgin modem directly to the WAN on the master firewall pulls it through & works fine.

Any idea's how I get around this?

Thanks,
Lee.

[icecream-guy]

your ISP may allow only 1 MAC address to allocate one ip, from their DHCP Pool.
you may have to contact them to allow multiple MAC addresses, or set the other device with the same MAC address, which may cause other issues.

[deanwebb]

I'm thinking a bulk router between the ISP modem and the HA firewalls, so that the firewalls can have a hard-coded IP address and the router handles the DHCP with the ISP interface. The router can also do some heavy lifting by simply dropping any traffic from undesired IP ranges, which takes load off of the firewalls.