Setting up UFW on Ubuntu

Login to ubuntu server

• on windows using PuTTY

Run following commands:

• sudo apt-get install ufw
• sudo ufw default deny incoming
• sudo ufw allow ssh
• sudo ufw allow <port/rule>
• sudo ufw enable
• sudo ufw status

References:

https://www.digitalocean.com/community/tutorials/how-to-setup-a-firewall-with-ufw-on-an-ubuntu-and-debian-cloud-server/

https://forums.perforce.com/index.php?/topic/827-ports-to-open-on-firewall/