I have two ISA Server 2006 computers on a back to back perimeter configuration. Recently, in the alert section, ISA01 (front) detects that ISA02 (back) makes many connections (TCP/UDP and HTTP) over limit configured. For this reasons, the same alert shows me the next connections will be restricted. Both ISA Server computers were modified to accept more connections. However, I don't know how many connections would be accepted securely. Could be this parameter the cause that Internet browsing is slow?
Do you have any recommendation about this infrastructure? Any parameters that I need to configure?
In fact, yesterday I modified the first point that you suggest me, thinking it could be a solution. And the upstream ISA (ISA01) is configured to allow all trafic from ISA02. Is it correct? Or do I need to configure a Web chaining?