Networking

SocketBindAllow setting

Allow systemd units to use system call bind() on sockets specified with the unit setting SocketBindAllow.

SocketBindDeny setting

Restrict systemd units to use system call bind() on sockets specified with the unit setting SocketBindDeny.

RestrictAddressFamilies setting

Restrict systemd units using only specified socket address families with the unit setting RestrictAddressFamilies.

Nstat

The command nstat provides network interface statistics and can be used for monitoring and troubleshooting.

Tcpdump cheat sheet

Get more information out of the tcpdump tool using this cheat sheet. Find everything that is going on the network and your Linux systems.

Ip cheat sheet

Want to see or configure every piece of information about networking, including routing on Linux? Forget tools like netstat and learn using the ip command.

Ss cheat sheet

If you want to learn more about network connections on Linux, then ss is the tool to get the job done. Learn how to use it with this cheat sheet.