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New Member

Multiple Internal Firewall Routing

My Network consists of a Internet T1 (256 IP's) connected via a 1601-R with three SonicWall

TZ-170's creating three distinct departments. Each Sonicwall has between 25-100 IP's of

the same master subnet.

PROBLEM: I need to have a couple public servers on two of the SonicWalls. Because I have

multiple internal firewalls, the packets get lost and don't go to the correct

firewall/internal-gateway.

I'm guessing I need to setup some static routing on the router (1601), but don't understand

how to do it just fore certain IP's and not subnets. I'd like to say something like:

.2 to .25 goto firewall/gateway .26

- and -

.27 to .100 goto firewall/gateway .101

- and -

.101 to .253 goto firewall/gateway .254

I'm a programmer with limited network knowledge. Any help or advice would be greatly

appreciated.

Thanks!

2 REPLIES
Bronze

Re: Multiple Internal Firewall Routing

You can configure host-specific routes and/or routes for smaller subnets. Host-specific routes are like this:

ip route 1.1.1.2 255.255.255.255 1.1.1.26

ip route 1.1.1.3 255.255.255.255 1.1.1.26

...etc.

If you know your CIDR boundries you can also aggregate these host routes into small subnets so that you don't have to configure 200+ routes on the router. For example, .128-.253 can be covered with '1.1.1.128 255.255.255.128', which saves you from entering 127 other host routes pointing to .254. But using host routes only will also work.

New Member

Re: Multiple Internal Firewall Routing

Thanks!

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