Thursday, January 31, 2019

Two separate standalone firewalls in two locations > DMZ?

I have two firewalls (P.Alto) sitting in two different campuses within our infrastructure connected via fiber. They are not synced to each other, just plain standalone FW's. Setup for Redundancy n protection for our internal network. From the Firewall up to the ISP all devices have assigned public I.P's.

The question is can I set up a separate DMZ on the other end FW1? everything is off FW2 DMZ interface >- servers, etc. if unreachable (site or FW) everything off that is blackholed. Oddly the DMZ interface on FW2 has a Public IP.

Is it possible to create an additional DMZ in FW1 to put some services behind that? Even though on FW2 the DMZ interface has a public IP address? Should I assign the FW1 DMZ a private IP or will have to get a new set of routable public IPs from the ISP? issues?

​

I'm no expert but if FW1 gets a DMZ, they will have to use a new set of routable IP's (NAT)? doubt that the DMZ can use the same subnet off of the IPs from FW2 DMZ

​

Connected from top to bottom (ISP to Campus)

ISP1 ISP2
ASR1(HSRP) VirtualIP ASR2(HSRP)
Sw1(Pub IP)------------------------------ -----------------------------fiber(Pub)---------------------------- ------------------Sw2(Pub IP)
FW1(in, out) FW2 (in,out,DMZ = PublicIP)
Campus 1 ----------------------------------- ------------------------------fiber(internal------------------------- ----------------------Campus 2

​



No comments:

Post a Comment