Learn how Firewall Service Rhel 6 protects against malicious attacks from outside sources. Read this guide today!
Firewall Service Rhel 6
A firewall Service is a service that protects networks from unauthorized access or intrusion. This is by blocking or filtering incoming and outgoing network traffic based on a set of rules. Also, this service is known as FirewallD.
It is a daemon that provides firewall functionality in Red Hat Enterprise Linux 6. Since FireWall-1 was a proprietary firewall system developed by Check Point Software Technologies. Linux is a Unix-like and multi-user operating system.
FirewallD is the default firewall in Red Hat Enterprise Linux (RHEL). It was developed to replace the legacy firewall system iptables. So, this is still available for backward compatibility with Red Hat Enterprise Linux 5.
Moreover, FirewallD was first introduced in Red Hat Enterprise Linux 6 as an alternative to iptables. It has been the default firewall in RHEL for several releases. It includes the iptables provides configuration interfaces in both command line and graphical user interface (GUI) formats.
In contrast, FirewallD provides configuration interfaces in both command line and GUI formats. But not via the iptables command line tool.
Network Security System Monitoring
FirewallD supports IPv4 and IPv6 network traffic and includes a D-Bus service for communication with other applications. It can be configured manually or dynamically using firewall rulesets provided by Red Hat. Also, a Firewall is a network security system that monitors and controls the incoming and outgoing network traffic.
This is based on a set of rules. The firewall service filters all incoming and outgoing connections based on user-defined rules. In RHEL 6, the firewall uses FirewallD as its default firewall toolkit.
So, it is used to configure packet filtering rules on RHEL 6 machines. This provides an easy way to manage firewalld services during runtime. It also helps you to limit connections from specific users with specified IP addresses for specific services provided by your machine etc.
Firewall Configuration Tool
FirewallD is a powerful firewall solution that enables you to configure advanced firewall rules quickly. This is easy without having any knowledge of iptables commands. Thus, by just using any text editor to manually write scripts.
It provides various features such as support for IPv6, NAT/Masquerade, port forwarding, and hardware acceleration. This is by using Netfilter technologies etc. In RHEL 6, there are two popular tools available for configuring iptables rules:
1. System-config-firewall
2. Firewall Configuration Tool (system-config-firewall).
System-config-firewall is a graphical user interface tool for configuring iptables that comes preinstalled. This is with your RHEL 6 server. However, it does not include support for IPv6 or masquerade configurations. Firewall Configuration Tool (firewall-config) is another GUI tool that is used to configure iptables firewall rules on RHEL 6. It is available as part of the firewalld package.
Moreover, this is a default firewall management tool in RHEL 6. So, FirewallD was introduced in Red Hat Enterprise Linux 6 as an alternative to iptables. Since it has been the default firewall in RHEL for several releases.