3 Restrict packet destination address. This can refer to a single IP address, an IP set ('+ipsetname') or an IP alias definition. You can also specify an address range like '20.34.101.207-201.3.9.99', or a list of IP addresses and networks (entries are separated by comma). Please do not mix IPv4 and IPv6 addresses inside such lists.
5 `--dport` `<string>` ::
7 Restrict TCP/UDP destination port. You can use service names or simple numbers (0-65535), as defined in '/etc/services'. Port ranges can be specified with '\d+:\d+', for example '80:85', and you can use comma separated list to match several ports or ranges.
9 `--icmp-type` `<string>` ::
11 Restrict ICMP packets to specific types. You can either use the names as
12 ip[6]tables ('ip[6]tables -p icmp[v6] -h') provides them, or use the
13 Type[/Code] value, for example 'network-unreachable' which corresponds to
16 `--iface` `<string>` ::
18 Network interface name. You have to use network configuration key names for VMs and containers ('net\d+'). Host related rules can use arbitrary strings.
20 `--log` `<alert | crit | debug | emerg | err | info | nolog | notice | warning>` ::
22 Log level for firewall rule.
24 `--proto` `<string>` ::
26 IP protocol. You can use protocol names ('tcp'/'udp') or simple numbers, as defined in '/etc/protocols'.
28 `--source` `<string>` ::
30 Restrict packet source address. This can refer to a single IP address, an IP set ('+ipsetname') or an IP alias definition. You can also specify an address range like '20.34.101.207-201.3.9.99', or a list of IP addresses and networks (entries are separated by comma). Please do not mix IPv4 and IPv6 addresses inside such lists.
32 `--sport` `<string>` ::
34 Restrict TCP/UDP source port. You can use service names or simple numbers (0-65535), as defined in '/etc/services'. Port ranges can be specified with '\d+:\d+', for example '80:85', and you can use comma separated list to match several ports or ranges.