Thks for answer. The rule numer 1, Internal Pages, was create to allow the internal host is connected with the servers of the network. No, my local host is only the isa server. My network have two addressing, 10.1.x.x is the network country and the 10.50.x.x is the regional network.
When I configure the network in isa server, I configured 10.0.0.1 to 10.255.255.255.
I had create this rules because, when i used the redirection to webserver, the isa it blocks.