Answer to Question #296117 in Computer Networks for kitty ku

Question

Name one wireshark-filtering-command to show the tcp and http packets sent to ip address 65.208.228.223;

b) Name one UNIX/LINUX-command to check which port of your computer is listening

c) Name one python-command to receive a packet using a server socket.

d) Name one UNIX/LINUX-command to implement CIDA subnet mask x.x.x.x/23 on interface enp3 

Answer 1

1. The tcp command is used in wireshark to filter is the tcp.port in {80, 443} or using the http.request.method in {"HEAD", "GET"}
2. UNIX/LINUX-command to check which port of your computer is listening is the command lsof or the netstat command with root privileges shows the services that are kistening to ports on a Linux server.
3. The send() command is used to send data from a from a server to a client which are TCP connected.
4. The ifconfig command is used to implement CIDR subnet mask on the interface enp3. From the results of the the output of the command, we check the netmask associated with an interface in our case the interface enp3. This shows the number of network bits that have been allocated when we and the IP and the netmask.