Specified by the value of the target, which can be the name of a user-defined chain, one Match, the next rule in the chain is examined if it does match, then the next rule is This is called a `target', which may be a jump to aĪ firewall rule specifies criteria for a packet and a target. Several different tables may be defined.Įach table contains a number of built-in chains and may also contain user-defined chains.Įach chain is a list of rules which can match a set of packets. IPv6 packet filter rules in the Linux kernel. Target = -j targetname ĭESCRIPTION Iptables and ip6tables are used to set up, maintain, and inspect the tables of IPv4 and Iptables -P chain target iptables -E old-chain-name new-chain-name Iptables/ip6tables - administration tool for IPv4/IPv6 packet filtering and NAT Now it works perfectly! Hope it can help someone.Provided by: iptables_1.4.21-1ubuntu1_amd64

chmod 755 /etc/init.d/iptables-persistent

If $IPTABLES_RESTORE < $IPTABLES_CONFIG thenĮcho 'Usage: /etc/init.d/iptables ' >&2Īnd then gave chmod 755 permission.

Log_action_begin_msg 'Reloading firewall configuration ' Log_action_begin_msg 'Deleting ALL firewall chains ' Log_action_begin_msg 'Flushing ALL firewall rules from chains!' If $IPTABLES_SAVE > $IPTABLES_CONFIG then Log_action_begin_msg 'Saving current firewall configuration' If $IPTABLES_RESTORE /dev/null 2>/dev/null & usplash_write 'TIMEOUT 15' || true Type usplash_write >/dev/null 2>/dev/null & usplash_write 'TIMEOUT 120' || true PATH='/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin' # Script to load/unload/save iptables firewall settings. # Creative Commons Attribution - Share Alike 3.0 License (BY,SA) # Required-Start: mountvirtfs ifupdown $local_fs In order to start and stop the firewall, but some distros like centos have installed a service called iptables to start and stop the firewall and a configuration file to configure it.Īnyway it's possible to make a service to manage ipotables editing or installing a script for this scope.Īll services in linux, ubuntu is not an exception, are executable scripts inside /etc/init.d folder, that implements a standard interface (start,stop,restart)Ī possible script looks like this: #!/bin/sh -e

Iptables is a command it's not a service, so generally it's not possible to use commands like service iptables start

Ubuntu iptables