A firewall is actually a set of rules that can be used to protect and secure the resources of your Local Area Network (LAN). This set of rules does the task of filtering the packets that arrive at your router. In case a packet meets the criteria that are mentioned in the rule, it is allowed to pass through. If not, that packet is dropped. This is the main concept of creating a firewall and it applies to Cisco router firewalls as well.On this page, we shall see how to configure a Cisco router firewall settings.
There are two ways to configure the firewall settings for your Cisco router.
This is the default firewall rule that is recommended by the Cisco manufacturers. You can opt for the Basic Firewall if you want your Cisco SDM to create a firewall using just the default rules.Here, the question, “What is Cisco SDM?” arises. SDM stands for Security Device Manager. The Cisco Router and Security Device Manager is, in fact, a web-based device management tool designed for Cisco routers.To configure the basic firewall settings on your Cisco router, follow these simple steps:
Learn how to configure cisco router firewall settings using advanced firewall.
The Advanced Firewall allows you to create your own inspection rules (whereas the basic firewall uses the default rules).You can opt for the Advanced Firewall if you want the Cisco SDM to lead you through the instructions of configuring a firewall. Here, you also have the facility to create a DMZ network. Here, DMZ stands for Demilitarized Zone. It is a perimeter network that can safeguard an organization’s LAN from untrusted traffic.To configure the advanced firewall settings on your Cisco router, follow these simple steps:
Once you are through with configuring the cisco router firewall settings, read the next section to know more about the settings you can change within your firewall.
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