Make a firewall that

- blocks all access either way to the N Y Times (or Fox news, your pick)
- Blocks web access (but not email) to someone else in the lab.
  You can access their web, they cannot access yours.
- Allows everything else


Make a firewall that  
- Allows the incoming two web ports
- Allows the incoming SMPT port
- Blocks all others


Do one with ufw, the other with gufw.