ISA Server HTTP Status Code of 12202

ISA Server denied access through destination port 8080

By default Web Proxy filters are using 80 (HTTP), 443 (HTTPS) and 563 (NTP)


HKEY_LOCAL_MACHINE\IsaStg_Eff1Policy\WebProxy\Proxy-TunnelPortRanges

You can get "ISA Server tunnel port tool" from "isatools.org" to create custom port ranges. Run the script from your ISA Server and follow the instructions to create a new port binding. After doing this create a custom protocol with TCP 8080 outgoing and add it to your Allow Internet access rule.