iptables
CautionManage iptables firewall
iptables -L -n -v
Direct kernel packet filtering. -L -n shows rules. Rules vanish on reboot unless persisted.
Examples
iptables -L -n -v --line-numbersList rules with line numbers
Syntax
iptables [-L] [-A chain rule] [-F]
Before you run it
Bad rules lock you out; -F flushes everything.
Related commands
- firewall-cmdManage firewalld (RHEL)
- ufwUncomplicated Firewall
- ssSockets and listening ports
The same reference, with no signal at all
Every command and flow from this site, held on your device and searchable with no connection. Free to install, no ads.
Get it free on the App Store