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Two NICs different subnet

Hi, I am trying to setup my sophos utm router running on my custom server with four NICs to be behind a router. On NIC 1 I have it connected to verizon fios router with a static IP address with the IP address 192.168.1.2/24. On NIC 2 I have it connected to an HP switch and that NIC has IP address 192.168.3.1 and I have setup DHCP on that NIC as well.
I thought sophos would automatically handle the connection between the two subnets, but it doesn't seem to be the case. I can't ping from NIC 1 to NIC 2 and vice versa. How can I have both NICs talk to each other even though they are on different subnets?

Here is additional configuration info:
NIC 1 (WAN)
Type: Ethernet
IP address: 192.168.1.2/24

NIC 2 (LAN)
Type: Ethernet
IP address: 192.168.3.1/24
DHCP Range: 192.168.3.20 - 192.168.3.40

Everything is currently off in the Sopho UTM except for the firewall, but there are no rules set in the firewall.

Any ideas on how I can have both NICs communicate with each other? Thank you in advanced.

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0 RussellChalmers over 10 years ago

@BOB, I am in the same situation as OP, I have limited admin access to ISP router and cannot bridge it plus I want a Low Security subnet 1 then UTM then High Security subnet 2 - why would double NAT not work?

Would I still get all benefits and protection of the UTM if I make the UTM a transparent bridge?
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0 RussellChalmers over 10 years ago

@BOB, I am in the same situation as OP, I have limited admin access to ISP router and cannot bridge it plus I want a Low Security subnet 1 then UTM then High Security subnet 2 - why would double NAT not work?

Would I still get all benefits and protection of the UTM if I make the UTM a transparent bridge?
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