DMZ with multiple customers

[stephg]

I have two routers facing 2 switches which are connected to a firewall. The problem is that I do not whant the traffic to route between each customer on the router's. Are ACL's the only way to go

Thank's

[daniel.bowen]

Explain - you have two routers connected to two switches, the switches have Fw's connected to them (one each) and you have multiple clients being routed to the DMZ?

[stephg]

The 2 routers and switches are the DMZ. The 2 switches are connected to a firewall cluster for redudancy. All the customer's are connected to the 2 router's (ethernet/T1/Bri). I do not whant the customer's network's to talk to each other even if they are on the same router/DMZ.

Maybe the design is not valide. Any ideas

routerA RouterB

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SwitchA-------SwitchB

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---Firewall Cluster-----