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Super_easy_way_of_WSL2_SSL_Server.md

Written on 8/23/2020

Updated on 3/1/2022

Super easy and simple way to access WSL2 SSH server from an external machine.

Summary

I found Scott Hanselman’s blog article. it gave me good advice to make settings of WSL2 SSH server host. I brushed up and added some trick to the contents. After that, It becomes super easy way to access WSL2 SSH server from an external machine.

There are three main solutions.

• Added the way to make SSH Key.
• No need to provide any scripts, and don’t mind internal IP address.
• You can redirect any WSL2 service with the same way.

Details

Install ssh

$ sudo apt install ssh

Edit /etc/ssh/sshd_config

...STUFF ABOVE THIS...
Port 2222
#AddressFamily any
ListenAddress 0.0.0.0
#ListenAddress ::

...Option Stuff
PasswordAuthentication yes

Generate SSH Key

If you didn’t make these keys, or you want to recreate them, do so.

$ sudo ssh-keygen -t ecdsa -N '' -f /etc/ssh/ssh_host_ecdsa_key
$ sudo ssh-keygen -t ed25519 -N '' -f /etc/ssh/ssh_host_ed25519_key
$ sudo ssh-keygen -t rsa -N '' -f /etc/ssh/ssh_host_rsa_key

Redirect port into WSL2

> netsh interface portproxy add v4tov4 listenaddress=0.0.0.0 listenport=22 connectaddress=127.0.0.1 connectport=2222

You can run this from elevated command script file.

Open the firewall

On Windows 10 firewall settiings, you have to open tcp port 22 and 2222.

Start SSH Server

$ sudo service ssh start

How to access from an external machine

$ ssh your.Windows10.machine.address

Reference

How to SSH into WSL2 on Windows 10 from an external machine (DO NOT DO THE INSTRUCTIONS IN THIS POST)

https://www.hanselman.com/blog/CommentView.aspx

THE EASY WAY how to SSH into Bash and WSL2 on Windows 10 from an external machine

https://www.hanselman.com/blog/THEEASYWAYHowToSSHIntoBashAndWSL2OnWindows10FromAnExternalMachine.aspx

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