by alexander bitar

1. How do I use netcat to listen for
connections on port 80 on blue?

2. 1. Turn on red and blue VM’s. Log onto root
for blue.
• Execute the following command : ‘nc –lvp 80’
• ‘nc’ is the netcat command
• -l is the listening flag where it will listen to a specified port ( -p )
• -v is the verbose flag where output is generated onto the terminal.
• -p is the port command, where we specify a port to do a task on ( in this case
we are listening to port 80 )
• ‘80’ is the specified port

3. 2. Execute ‘nc –lvp 80’

4. You are now listening on port 80 on blue!
• Go onto red and execute the following as root : ‘nc –nv 10.0.2.12 80’
• -n is a flag. This is used to stop a DNS lookup.
• -v is verbose, where output is printed.
• We are connecting to ‘10.0.2.12’ and port ‘80’ on that machine.
• Once executed, type some text to test the connection. You should see the text
written on red appear on blue!

5. Output on both machines :

6. Once we cancel netcat on the connecting
machine ( red).. Blue stops to listen :