Looks like you don't have to do anything on 1809 - it just works out of the box (I'm running Pro 1809).
Windows PowerShell
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PS C:\Windows\system32> ssh
The authenticity of host ' (' can't be established.
ECDSA key fingerprint is SHA256:ERTIH8xxxxxxxxxxxN6S2QiO7fVHQuA1oLAu+2c.
Are you sure you want to continue connecting (yes/no)? y
Please type 'yes' or 'no': yes
Warning: Permanently added '' (ECDSA) to the list of known hosts.
[email protected]'s password:
Last login: Mon Nov 19 19:40:31 2018 from
[[email protected] ~]$ uname -a
Linux Arch-vm 4.18.14-arch1-1-ARCH #1 SMP PREEMPT Sat Oct 13 13:42:37 UTC 2018 x86_64 GNU/Linux
[[email protected] ~]$[[email protected] ~]$ exit
Connection to closed.
PS C:\Windows\system32> ssh [email protected]
[email protected]'s password:
No more need for Putty - thanks!