Tried doing some research but can't really figure out the solution (or how to troubleshoot further) for this problem.
Objective and Reasoning for setting this up: SSH Tunnel RDP from work to home computer. At work, most ports are blocked, but I am able to use SSH.
Set-Up: Macbook Pro (at Work) --> Internet --> HomeModem --> SSHserver and Windows 10 Pro
I am able to connect directly to Windows 10 (from a friends house or local lan) without any issues. When I connect from WAN (not at work) I have port forwarding on my router at home setup for 338900 --> 3389 Windows 10 and 22 --> 22 SSHserver
I am able to connect to my SSHserver (Debian 8) from work and everywhere without any issues.
Attempts: From my mac I have tried:
ssh -p 22 -L 3400:192.168.1.2:3389 root@WANIP | RDP: 192.168.1.2:3400 = no connection
ssh -p 22 -L 3400:192.168.1.2:338900 root@WANIP | RDP: 192.168.1.2:3400 = no connection
ssh -p 22 -L 3400:WANIP:338900 root@WANIP | RDP: WANIP:3400 = no connection
All these attempts have been made from a WAN connection where I can just connect using: RDP WANIP:338900 = connection
Any direction and help is greatly appreciated.