What Is the Firewall Utility Used for Firewall Configuration in Linux?

You can control the Linux Firewall with the Command Line Utility iptables.

Which command is used for firewall in Linux?

Iptables is a Linux command line firewall that allows system administrators to manage incoming and outgoing traffic via a set of configurable table rules.

What is the use of firewall in Linux?

Firewalls create a barrier between a trusted network (like an office network) and an untrusted one (like the internet). Firewalls work by defining rules that govern which traffic is allowed, and which is blocked. The utility firewall developed for Linux systems is iptables.