Password-less ssh in 2 Glorious Steps...

Wed, 17 Jun 2020 23:54:55 +0000

Local System - Let’s call it alpha
Remote System we don’t want to have to enter passwords for,
Let’s call it foxtrot

Prep: Harden your existing ssh keys since RSA 1024 sucks. This will create a new 4096 version - ed22519 is actually preferred so you can skip the rsa creation if preferred.

me@alpha$ mv ~/.ssh/id_rsa ~/.ssh/id_rsa_legacy
me@alpha$ mv ~/.ssh/id_rsa.pub ~/.ssh/id_rsa_legacy.pub

Step 1: Generate new keys:

me@alpha$ ssh-keygen -t rsa -b 4096 -o -a 100 #RSA version
me@alpha$ ssh-keygen -o -a 100 -t ed25519 #Preferred ed25519 version

Step 2: Copy the Ed25519 keys to the remote system called foxtrot:

Ssh on kenops

Password-less ssh in 2 Glorious Steps...