Improve Article Save Article Like Article ReadDiscussImprove Article Save Article Like Article Prerequisite FirewallA firewall is a hardware or software network security device that monitors all incoming and outgoing traffic based on a defined set of security rules, it accepts, rejects, or drops that specific traffic. Accept Allow Block traffic but respond with “reachable error”.Drop Block unanswered traffic firewall establishes a barrier between secure internal networks and untrusted external networks, such as the to Configure and Verify Firewall in Cisco Packet TracerStep 1 First, open the Cisco packet tracer desktop and select the devices given below Addressing Table AddressSubnet create a network topology as shown below the an Automatic connecting cable to connect the devices with 2 Configure the PCs hosts and server with IPv4 address and Subnet Mask according to the IP addressing table given assign an IP address in PC0, click on go to desktop and then IP configuration and there you will IPv4 IPv4 address and subnet the same procedure with the serverAssigning an IP address using the ipconfig command, or we can also assign an IP address with the help of a to the command terminal of the type iPConfig if neededExample ipconfig the same procedure with other PCs to configure them 3 Configuring the firewall in a server and blocking packets and allowing web on server0 then go to the click on firewall on the Deny the ICMP protocol and set remote IP to and Remote wildcard mask to allow the IP protocol and set remote IP to and Remote wildcard mask to add 4 Verifying the network by pinging the IP address of any will use the ping command to do click on PC2 then Go to the command type ping .We will ping the IP address of the we can see in the below image we are getting no replies which means the packets are the web browser by entering the IP address in the on PC2 and go to desktop then web Updated 30 Jun, 2022Like Article Save Article