Fortinet Document Library

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iptables

This command is used to enable or disable IP tables. The settings will be discarded after reboot.

Syntax

iptables -[ACD] chain rule-specification [options]

iptables -I chain [rulenum] rule-specification [options]

iptables -R chain rulenum rule-specification [options]

iptables -D chain rulenum [options]

iptables -[LS] [chain [rulenum]] [options]

iptables -[FZ] [chain] [options]

iptables -[NX] chain

iptables -E old-chain-name new-chain-name

iptables -P chain target [options]

iptables -h (print this help information)

Commands

Either long or short commands are allowed.

--append -A chain

Append to chain.

--check -C chain

Check for the existence of a rule.

--delete -D chain

Delete matching rule from chain.

--delete -D chain rulenum

Delete rule rulenum (1 = first) from chain.

--insert -I chain [rulenum]

Insert in chain as rulenum (default 1=first).

--replace -R chain rulenum

Replace rule rulenum (1 = first) in chain.

--list -L [chain [rulenum]]

List the rules in a chain or all chains.

--list-rules -S [chain [rulenum]]

Print the rules in a chain or all chains.

--flush -F [chain]

Delete all rules in chain or all chains.

--zero -Z [chain [rulenum]]

Zero counters in chain or all chains.

--new -N chain

Create a new user-defined chain.

--delete-chain -X [chain]

Delete a user-defined chain.

--policy -P chain target

Change policy on chain to target.

--rename-chain -E old-chain new-chain

Change chain name, (moving any references).

Options

Either long or short options are allowed.

--ipv4 -4

Nothing (line is ignored by ip6tables-restore).

--ipv6 -6

Error (line is ignored by iptables-restore).

[!] --protocol -p proto

Protocol: by number or name, for example: tcp.

[!] --source -s address[/mask][...]

Source specification.

[!] --destination -d address[/mask][...]

Destination specification.

[!] --in-interface -i input name[+]

Network interface name ([+] for wildcard).

--jump -j target

Target for rule (may load target extension).

--goto -g chain

Jump to chain with no return.

--match -m match

Extended match (may load extension).

--numeric -n numeric

Output of addresses and ports.

[!] --out-interface -o output name[+]

Network interface name ([+] for wildcard).

--table -t table

Table to manipulate (default: `filter').

--verbose -v

Verbose mode.

--wait -w

Wait for the xtables lock.

--line-numbers

Print line numbers when listing.

--exact -x

Expand numbers (display exact values).

[!] --fragment -f

Match second or further fragments only.

--modprobe=<command>

Try to insert modules using this command.

--set-counters PKTS BYTES

Set the counter during insert/append.

[!] --version -V

Print package version.

iptables

This command is used to enable or disable IP tables. The settings will be discarded after reboot.

Syntax

iptables -[ACD] chain rule-specification [options]

iptables -I chain [rulenum] rule-specification [options]

iptables -R chain rulenum rule-specification [options]

iptables -D chain rulenum [options]

iptables -[LS] [chain [rulenum]] [options]

iptables -[FZ] [chain] [options]

iptables -[NX] chain

iptables -E old-chain-name new-chain-name

iptables -P chain target [options]

iptables -h (print this help information)

Commands

Either long or short commands are allowed.

--append -A chain

Append to chain.

--check -C chain

Check for the existence of a rule.

--delete -D chain

Delete matching rule from chain.

--delete -D chain rulenum

Delete rule rulenum (1 = first) from chain.

--insert -I chain [rulenum]

Insert in chain as rulenum (default 1=first).

--replace -R chain rulenum

Replace rule rulenum (1 = first) in chain.

--list -L [chain [rulenum]]

List the rules in a chain or all chains.

--list-rules -S [chain [rulenum]]

Print the rules in a chain or all chains.

--flush -F [chain]

Delete all rules in chain or all chains.

--zero -Z [chain [rulenum]]

Zero counters in chain or all chains.

--new -N chain

Create a new user-defined chain.

--delete-chain -X [chain]

Delete a user-defined chain.

--policy -P chain target

Change policy on chain to target.

--rename-chain -E old-chain new-chain

Change chain name, (moving any references).

Options

Either long or short options are allowed.

--ipv4 -4

Nothing (line is ignored by ip6tables-restore).

--ipv6 -6

Error (line is ignored by iptables-restore).

[!] --protocol -p proto

Protocol: by number or name, for example: tcp.

[!] --source -s address[/mask][...]

Source specification.

[!] --destination -d address[/mask][...]

Destination specification.

[!] --in-interface -i input name[+]

Network interface name ([+] for wildcard).

--jump -j target

Target for rule (may load target extension).

--goto -g chain

Jump to chain with no return.

--match -m match

Extended match (may load extension).

--numeric -n numeric

Output of addresses and ports.

[!] --out-interface -o output name[+]

Network interface name ([+] for wildcard).

--table -t table

Table to manipulate (default: `filter').

--verbose -v

Verbose mode.

--wait -w

Wait for the xtables lock.

--line-numbers

Print line numbers when listing.

--exact -x

Expand numbers (display exact values).

[!] --fragment -f

Match second or further fragments only.

--modprobe=<command>

Try to insert modules using this command.

--set-counters PKTS BYTES

Set the counter during insert/append.

[!] --version -V

Print package version.