firewall assignment.pdf
- 1. Computer Network Activity No. # 03 Firewall Configuration Submitted By Shahab Ahmad (12587) M. Shoaib Hussain (15321) Submitted To Sir Syed Naqi Abbas BS (Computer Science) 6th Semester (Section D) Spring-2022 Riphah International University Faisalabad Campus
- 2. 1.To verify if UFW is enabled, enter the following command: sudo ufw status The ufw status option helps us see the current state of UFW, the application. If UFW is active, the UFW status shows a list of rules. 2.To enable UFW, enter the following command: sudo ufw enableIf you got a Status: inactive message when running ufw status, it means the firewall is not yet enabled on the system. You’ll need to run a command to enable it.
- 3. 3. To allow communication through port 21, enter the following command: sudo ufw allow 21 This will open port 21 in ufw and allow traffic through this port. Port 21 is used for FTP traffic and must be open if you’re running a FTP server through the default port. 4. To remove the communication rule, enter the following command: sudo ufw delete allow 21
- 4. 5. To allow the communication through port 21 and accept UDP, enter the following command: sudo ufw allow 21/udp 6.To remove it, enter the following command: sudo ufw delete allow 21/udp
- 5. 7. To deny the protocol SMTP, enter the following command: sudo ufw deny smtp 8. To remove the rule, enter the following command: sudo ufw delete deny smtp
- 6. 9. Finally, to disable the firewall, enter the following command: sudo ufw disable