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SSH explained

# SSH

An encrypted protocol for remote administration.

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## IN THIS DOCUMENT

[What it means](https://koalavps.com/glossary-ssh/#section-1)[For hosting](https://koalavps.com/glossary-ssh/#section-2)[How will you verify a host-key change?](https://koalavps.com/glossary-ssh/#section-3)[Knowledge base](https://koalavps.com/resources/)

## What it means

SSH can authenticate with keys and protect traffic between a client and server. The server host key identifies the endpoint; the user’s private key must stay private.

## For hosting

Verify host-key changes rather than dismissing the warning automatically. Use separate keys or credentials where different access roles need independent revocation.

## How will you verify a host-key change?

Use the provider’s trusted console or another independently established channel. A rebuilt server can legitimately change its key, but an unexplained change should be investigated before sending credentials.

KEEP EXPLORING

## Continue reading.

[Learn ### The words behind the infrastructure. A compact reference for reading a hosting specification and asking the next useful question.…](https://koalavps.com/glossary/)[Learn ### A field guide to your own infrastructure. Useful reading for the first deployment and the next careful improvement. Start with the decision you need to make today.…](https://koalavps.com/guides/)[Network ### A network should explain itself. Understand the Nordic region choices, the difference between a port speed and real throughput, and what evidence a hosting network…](https://koalavps.com/network/)

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