Security of ssh across a LAN, public key versus password

[Chris Green]

On Mon, Oct 21, 2024 at 08:50:44PM +0000, Tim Rice via openssh-unix-dev wrote:
> Hi Chris,
> 
> > What do you mean by "keypair authentication"?
> 
> That's the authentication you use when you have ssh-keygen provide you 
> with a private key and a public key, and distribute the public key to all 
> the different authorized_keys files. 
> 
But he says not to use passphrases, I'm confused.

-- 
Chris Green