So I am in the begining of creating new system for my company, butin this moment I have very unclear situation ISA (standalone Wproxy-----internal)======PIX=====Proxy(Squid---on way comm)========outside My idea is very simple, to unify system and take all advantages of ISA ARRAY, with Win 2k3 Srv NLB features, trying to avoid single point of failure, with ?software redundant? system......... Desired state (for me) ISA1 (array)=====PIX===ISA2(array)====outside Only isa 1 can initiate connection to ISA2..... So maybe Mr. Jim Harrison and Tom Shinder have any Issues for me...... Best regards to all of You