Install PIX between Internal network and internet from with 3 ISP

[lebda]

Hi,

We have internal network connected to Internet by 3 ISP,some clients connected to internet using first ISP using the proxy server 1,otheres connected to internet by second ISP using the proxy server 2,one application server connected to internet using the full link bandwidth of third ISP. I have PIX 525 and I want to secure the network by install the PIX between the internal network and internet. What is the best solution.

Thanks

[jsivulka]

The PIX does not provide anything equivalent of a virtual firewall feature. All your packets destined to the outside network have to pass through the PIX. The task of routing these packets to one of the three ISP's will have to be done by the perimeter router.