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0x13. Firewall

0-block_all_incoming_traffic_but

Let’s install the ufw firewall and setup a few rules on web-01.

Requirements:

  • The requirements below must be applied to web-01 (feel free to do it on lb-01 and web-02, but it won’t be checked)
  • Configure ufw so that it blocks all incoming traffic, except the following TCP ports:
    • 22 (SSH)
    • 443 (HTTPS SSL)
    • 80 (HTTP)
  • Share the ufw commands that you used in your answer file

100-port_forwarding

Firewalls can not only filter requests, they can also forward them.

Requirements:

  • Configure web-01 so that its firewall redirects port 8080/TCP to port 80/TCP.
  • Your answer file should be a copy of the ufw configuration file that you modified to make this happen