That would’ve been a great feature, I really don’t know why postman doesn’t have such a feature, it Would have been similar to jetbrain’s ide’s ssh feature for service like logging into a database, for example you only have localhost login to your database, the ide logs with ssh into the machine then you login to the database locally, or if running test docker containers on remote machines you ssh to your remote machines and build and test your docker dev container on that machine

What I ended up doing is building the request in postman and i copy it as a curl code snippet and i run it in my ssh terminal

Or You can follow this article how to use your ssh login as a local http proxy server, postman support http forward proxies