ssh port forwarding

ssh-port-fwd

ssh -L 6060:127.0.0.1:6060 [email protected]

golang pprof tool by default starts the pprof web server on localhost:6060. My pprof was running inside a VM and I needed to access the web server from the host. I could ssh to the VM. Thus I needed to enable port-forwarding on the host to the VM (remote).

ssh -L 6060:127.0.0.1:6060 [email protected]
         |      |       |  |-------v------------|
         |      |       |           \--------------- remote ssh user@hostname
         |      |       |
         |      |       \--------- remote port to forward
         |      |
         |      \----------------- remote IP to forward ... in my case it was localhost
         |
         \------------------------ Local port to use for forwarding

After this I could use the web-browser on localhost:6060 __on the host__ to access the localhost:6060 on the VM.

[Update]
This even works with vagrant ssh.
vagrant ssh -- -L 6060:127.0.0.1:6060