Cyber Security Operating System & Network Fundamentals
Operating System and Network Fundamentals |Assignment 2
1. Review each of your network connections and open sockets on your Linux machine using “netstat”.
2. Securely transfer a file from your Linux machine using NetCat/NC utility by establishing a Client server Communication.
3. Configure the firewall iptables for the following rules:
a. Block the IP address 192.168.192.168
b. Block outgoing SMTP protocol
c. Allow incoming RDP protocol
d. Allow output of HTTP protocol to IP addresses
192.168.192.0/24
e. Block Instagram
4. Enforce the user to use a password with the following conditions:
a. Minimum length of password should be 12
b. Password should have at least 3 uppercase characters
c. Password should have at least 3 lowercase characters
d. Password should have at least 2 numeric characters
e. Password should have at least 2 special characters
5. Change the MAC address of the eth0
interface to a 00:11:22:33:44:55. Explain why you can’t
assign 11:22:33:44:55:66 as the MAC address to an interface?
6. Change the IP address of the eth0 interface
to another IP address belonging to the same network.
7.Run nslookup on www.duckduckgo.com
and write a conclusion based on your observation.
8. Explain HTTP status codes.
9. For the IP address 231.119.106.0
a. List the IP address of the 8 subnets
b. Mention the number of total IP address that each subnet can have.
c. Mention the range of IP address in each subnet
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