How to work around this `Your connection is not secure` error in Firefox when using mitmweb?

Anthony Kong

I am trying to use mitmweb as a proxy to audit some web front end performance issue.

However when I tried to connect to my work website, I got the following error:

enter image description here

Here is my proxy settings of Firefox:

enter image description here

Here is how I started mitmweb:

mitmweb -p 7999 --no-http2

I want to ignore this warning, but there is no 'Add Exception...' button available. How can I bypass this warning?

The OS is OSX 10.14.3

Anthony Kong

If a website has flagged HSTS, a properly implemented browser will honour the flag and will not allow the user to ignore the security risk.

Collected from the Internet

Please contact [email protected] to delete if infringement.

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