# SSH Basics — Linux

Source: https://www.geekswithgeeks.com/en/linux/linux-ssh

> Logging into a remote machine securely.

## What SSH does

**SSH (Secure Shell)** opens an encrypted terminal session on a remote machine, so you can run commands as if you were sitting in front of it.

## Connecting

`ssh user@host` connects and prompts for a password (or uses a key).

```bash
ssh alice@192.168.1.20
ssh alice@myserver.com -p 2222   # custom port
```

## Keys beat passwords

`ssh-keygen` creates a key pair; `ssh-copy-id user@host` installs your public key so future logins skip the password entirely.