[Sarky]

Firefox can be used with socks proxies nicely.

- Use Multi-Account Containers plugin, where you define which domain should be opened in which container.

- Use Container Proxy to configure which socks proxy to use for different containers.

Pair that with ssh tunnel that you use as socks proxy and you have nive tunneling solution for browser.

[saltcured]

Maybe, but what I want is just a toggle or something in the very basic manual proxy config to invert the current configuration model.

Here's my ad-hoc proxy. Use it for only these domains (while everything else goes direct).

After I complete my special tunneling task, I'm going to flip it back to "no proxy" and resume normal life.

[pull_my_finger]

I've been a very happy user of firefox container tabs, but this is the first I'd heard of container proxies. Any resources on them you can share?

[sigsergv]

Or use plugins like foxyproxy that implement transparent rule-based routing without containers.