Status: 12209 Forefront TMG requires authorization to meet the request. The technet article I discovered the online proxy filter work round, says : The drawback of this workaround is that outbound HTTP requests from SecureNAT and Firewall clients will then go directly to the Web server instead of being redirected to the Web Proxy filter.

Once a connection to the net proxy listener has been established, in packet eight the client sends an HTTP GET request for In packet thirteen you will see that the Forefront TMG firewall denied the request and replied with an HTTP 407 response, indicating that proxy authentication was required.

The HTTP Filter in Forefront TMG can also be capable to filter HTTPS traffic utilized in reverse internet server publishing situations the place HTTPS Bridging is used and for outgoing HTTPS requests when the HTTPS inspection characteristic of Forefront TMG is activated.

If only Internet Explorer … Read More