cloud engineer
Here’s how to keep your SSH timeout alive for a longer period.
Edit /etc/ssh/sshd_config. Adjust interval and count max.
ClientAliveInterval 1200 ClientAliveCountMax 3 |
ClientAliveInterval is set to 1200 and ClientAliveCountMax is set to the default which is 3. This means unresponsive SSH clients will be disconnected after approximately 3600 seconds or 1 hour.
AWS LightSail now has the ability to restrict IP addresses in their firewall rules. LightSail instances can now be secured by limiting firewall rules from an IP CIDR block or a single IP address. For example, you can restrict who can SSH into your instance by limiting it to just your IP address, so only you can SSH into your machine. Another feature AWS added in their LightSail firewall is support for ping, which could be helpful for monitoring and checks.
Here’s the command to copy a secret key to a remote server.
ssh-copy-id user@servername |
This assumes you already generated a key.