ssh -L 1234:127.0.0.1:1234 $USER@$IP

SSH local port forward or Kerberos (GSSAPI) login.

Command:

```
ssh -L 1234:127.0.0.1:1234 $USER@$IP
```

References:

https://man.openbsd.org/ssh

scp nc.exe $USER@$IP:"C:\\users\\$USER"