While I am still building my NAS and have monitor and keyboard attached, can I enable SSH and disable telnet from console? I could try the usual Slackware method but I am afraid of silently breaking something specific to unRAID.

Sure, after asking the question I immediately found the answer. I had to dele te contents of /boot/config/ssh and reboot. Now it is working. Sorry.

 

Looking how to disable telnet now.

Refer to: http://lime-technology.com/forum/index.php?topic=51486.msg494146#msg494146

or this: http://lime-technology.com/forum/index.php?topic=49233.msg472422#msg472422

Good, that worked.

 

# Disable telnet and ftp
sed -i -e 's/^telnet/#telnet/;s/^ftp/#ftp/' /etc/inetd.conf
/etc/rc.d/rc.inetd restart

 

The variant in the wiki did not.

Odd that it didn't as it was taken from my post and I don't any difference.