CORS error (blocked message) when use explicity proxy

[OlegPowerC]

Hello!

When I set explicit proxy and block some URL and want to show blocked message, I get 303 and redirect but browser doesn't show message, in debug I saw CIRS error, what can I do to solve this problem?

Thank You!

[Amir_Senn · Accepted solution]

"A 303 status code is not an error, but rather a response indicating that the requested resource has been moved to a new location and the client should make a new request to that location. Therefore, there is usually no need to “fix” a 303 status code."

You enabled another portal recently?

Good place to start is to check under gateway object, I would check definitions here:

[OlegPowerC]

Hm...

If I set proxy port as 8080, all work as expected.

But not work speedtest.net

If I set port 3128 or any other, speedtest.net work but block page not work 🙂

[Amir_Senn]

2 ideas:

a. Try to change accessibility option to all interfaces

b. Try create custom https service object port 8443 and use it

[PhoneBoy]

CORS, or Cross-Origin Resource Sharing, is a browser security mechanism that restricts HTTP requests initiated from scripts running in a browser, preventing unauthorized access to resources from different domains.
To "fix" this, the block page would likely have to appear to come from the same domain you're trying to block or the site the page comes from would have to be explicitly permitted in their CORS policy.