18.3.6. Listing Options
18.3.6. Listing Options The default list command, iptables -L , provides a very basic overview of the default filter table's current chains. Additional options provide more information: -v - Displays verbose output, such as the number of packets and bytes each chain has seen, the number of packets and bytes each rule has matched, and which interfaces apply to a particular rule. -x - Expands numbers into their exact values. On a busy system, the number of packets and bytes seen by a particular chain or rule may be abbreviated using K (thousands), M (millions), and G (billions) at the end of the number. This option forces the full number to be displayed. -n - Displays IP addresses and port numbers in numeric format, rather than the default hostname and network service format. --line-numbers - Lists rules in each chain to their numeric order in the chain. This option is useful when attempting to delete the specific rule in a chain or to locate where to insert a rule within a chain. -t - Specifies a table name.