Linux networking · Packet capture and firewall
Turn the firewall on (ufw)
Enable ufw and start it at boot.
sudo ufw enable
Official Linux networking documentation
More packet capture and firewall commands
- Capture traffic on an interface
- Capture traffic for a port
- Save a capture for Wireshark
- Show the firewall rules (ufw)
- Allow a port (ufw)
- List nftables rules
All packet capture and firewall commands · Linux networking cheatsheet