tagline: From openSUSE
iptables is the userspace command line program used to configure the Linux 2.4.x and 2.6.x IPv4 packet filtering ruleset provided by netfilter.org. The iptables package also includes ip6tables, which is used for configuring the IPv6 packet filter. Since Network Address Translation is also configured from the packet filter ruleset, iptables is also used for NAT.
iptables is targeted towards system administrators. OpenSuse users should use the Yast Firewall module to configure and control the firewall.
To verify the version of the firewall, perform the following from the terminal.
/usr/sbin/iptables --version iptables v184.108.40.206
 Manual Update
To manually update the firewall, visit netfilter.org and download iptables. Verify the signature or checksum, unpack the package, read INSTALL, and then perform the following steps listed below:
Configure using a standard account. Since setting up iptables only requires reading source files and invoking tools, a standard account is adequate and there is no need to log in as Root. Note that the iptables default prefix is /usr/local, which is a different path than used by openSUSE.
>cd iptables-220.127.116.11/ configure --prefix=/usr
Make using a standard account.
 Root and directory change
Acquire administrative privileges and then change directory into the package directory used to build iptables.
>su - password: cd iptables-18.104.22.168/
 Stopping SUSE Firewall
Stop the firewall.
#/sbin/rcSuSEfirewall2 stop Shutting down the Firewall done
 Installing iptables
Install the new firewall.
 Starting Firewall
Start the new firewall.
#/sbin/rcSuSEfirewall2 start Starting Firewall Initialization (phase 2 of 2) done