Short bio: Computer Scientist, FOSS supporter (read more)
Tux Machines (TM)-specific
Linux OS is actually considered as a robust platform. It is not easily attacked by virus and other unwanted Internet junk. Yet it is better to keep your system protected as a wiseman said, “Prevention is better than cure”. So, this would make you protect your Linux / Ubuntu system, so we compile a list of 5 best free Ubuntu / Linux firewalls.
There are number of Firewalls for Ubuntu / Linux available on Internet, but choosing the best one for your system is your decision. So, here are the 5 best free Linux / Ubuntu firewalls (alphabetical order ):
iptables is a user friendly program or you can term it as an interface which lets you handle number of network parameters like packet filtering, network address translation (NAT), and port address translation (PAT). This Linux / Ubuntu firewall is avaiable in two versions, which are for IPv4 and IPv6.
iptables is a highly recommended firewall for Ubuntu / Linux because it offers multiple layers of API’s for 3rd party extensions and has large number of plugins/modules kept in ‘patch-o-matic’ repository.