This article describes how to allow chat.openai.com when FortiGate is configured as an explicit proxy and has a web filter profile
Scope
FortiGate v6.4.x +.
Solution
chat.openai.com is redirected to chatgpt.com.
On checking the web filter category, chat.openai.com and chatgpt.com belong to the artificial intelligence technology category:
However, just by allowing the artificial intelligence technology category, a blank page appears instead of a ChatGPT chat screen.
After inspecting the page, URLs are getting redirected to cdn.oastatic.com
As it is an explicit proxy and proxy-based inspection, it is necessary to manually allow all embedded URLs or allow the content server category:
ChatGPT works:
