Note: Please run this project in ubuntu console

1. Clone the project to ubuntu home -- git clone https://github.com/wellsonah2019/cs441_t6.git

2. Open ubuntu console and install python-is-python3:

   sudo apt-get install python-is-python3 -y
   

3. Open ubuntu console and run the commands below:

   cd ~/cs441_t6
   python node1-listener.py
   

4. Run the other python files in separate ubuntu consoles:

   python node2-listener.py
   python node3-listener.py
   python router-nic1.py
   python router-nic2.py
   

   Ping Protocol (Node 1 Ping Node 3 Example)

   Note: Ping Protocol works for all 3 nodes and router
   a. Input 0 in the console where node1-listener.py is run and press Enter to choose Ping Protocol

   [Node 1]
   Please select what protocol you would like to use:
   0. Ping Protocol
   1. Log Protocol
   2. Kill Protocol
   3. Simple Messaging
   5. ARP Poisoning
   7. IP SPOOFING
   0
   

   b. Insert the destination (Node 3's IP address) and press Enter

   Please insert the destination: 0x2B
   

   c. Insert the message you want to send to node 3 and press Enter

   Please insert the message you want to send: hello node3
   

   Node 3 Console (Successful Ping from Node 1)

   ----------- [14:36:44] -----------
   
   The packet received:
   Source MAC address: R2, Destination MAC address: N3
   
   Source IP address: 0x1A, Destination IP address: 0x2B
   
   Protocol: Ping
   
   Data Length: 011
   
   Message: hello node3
   ----------------------------------
   Ping successful:  9.165
   

   Node 1 Console (Reply from Node 3)

    Reply from 0x2B
   -----------04/13/2022, 14:36:44-----------
   
   The packet received:
   Source MAC address: R1, Destination MAC address: N1
   
   Source IP address: 0x2B, Destination IP address: 0x1A
   
   Protocol: Ping
   
   Data Length: 11
   
   Message: hello node3
   
   Approximate round trip in ms: 24.05
   ----------------------------------
   

   Node 3 Console

   ----------- [14:36:44] -----------
   
   The packet received:
   Source MAC address: R2, Destination MAC address: N3
   
   Source IP address: 0x1A, Destination IP address: 0x2B
   
   Protocol: 0
   
   Data Length: 011
   
   Message: hello node3
   
   PACKET NOT FOR ME. DROPPING NOW...
   ----------------------------------
   packet received
   
   ----------- [14:36:44] -----------                              
   
   The packet received:
   Source MAC address: N3, Destination MAC address: R2
   
   Source IP address: 0x2B, Destination IP address: 0x1A
   
   Protocol: 0
   
   Data Length: 011
   
   Message: hello node3
   
   PACKET NOT FOR ME. DROPPING NOW...
   ----------------------------------
   packet received
   

   Log Protocol (Node 1 to Node 3 Log Protocol Example)

   Note: Log Protocol works for all 3 nodes and router a. Input 1 in the console where node1-listener.py is run and press Enter to choose Ping Protocol

   [Node 1]
   Please select what protocol you would like to use:
   0. Ping Protocol
   1. Log Protocol
   2. Kill Protocol
   3. Simple Messaging
   5. ARP Poisoning
   7. IP SPOOFING
   1
   

   b. Insert the destination (Node 3's IP address) and press Enter

   Please insert the destination: 0x2B
   

   c. Insert the log details you want to send to node 3 and press Enter

   Please insert the log details: Hi node 3, I'm node 1 (Log Protocol)
   

   d. A node3.log log file would be created in the basic folder as shown below

   Node 3 Console

   ----------- [14:46:34] -----------
   
   The packet received:
   Source MAC address: R2, Destination MAC address: N3
   
   Source IP address: 0x1A, Destination IP address: 0x2B
   
   Protocol: Log
   
   Data Length: 57
   
   Message: 04/13/2022, 14:46:34 Hi node 3, I'm node 1 (Log Protocol)
   ----------------------------------
   Successfully written to log file!
   

   Node 2 Console

   ----------- [14:46:34] -----------
   
   The packet received:
   Source MAC address: R2, Destination MAC address: N3
   
   Source IP address: 0x1A, Destination IP address: 0x2B
   
   Protocol: 1
   
   Data Length: 57
   
   Message: 04/13/2022, 14:46:34 Hi node 3, I'm node 1 (Log Protocol)
   
   PACKET NOT FOR ME. DROPPING NOW...
   ----------------------------------
   packet received
   

   Kill Protocol (Node 1 Kill Node 2 Example)

   Note: Kill Protocol works for all 3 nodes and router
   a. Input 2 in the console where node1-listener.py is run and press Enter to choose Kill Protocol

   [Node 1]
   Please select what protocol you would like to use:
   0. Ping Protocol
   1. Log Protocol
   2. Kill Protocol
   3. Simple Messaging
   5. ARP Poisoning
   7. IP SPOOFING
   2
   

   b. Insert the destination (Node 2's IP address) and press Enter

   Please insert the destination: 0x2A
   

   Node 2 Console (Node 2 has been successfully killed)

   ----------- [15:10:19] -----------
   
   The packet received:
   Source MAC address: R2, Destination MAC address: N2
   
   Source IP address: 0x1A, Destination IP address: 0x2A
   
   Protocol: Kill
   
   Data Length: 0
   
   Message:
   ----------------------------------
   Kill protocol has been given. Will exit now...
   jesst@DESKTOP-0PJ69ED:~/network-simulator/cs441_t6/basic$
   

   Node 3 Console

   ----------- [15:10:19] -----------
   
   The packet received:
   Source MAC address: R2, Destination MAC address: N2
   
   Source IP address: 0x1A, Destination IP address: 0x2A
   
   Protocol: 2
   
   Data Length: 0
   
   Message:
   
   PACKET NOT FOR ME. DROPPING NOW...
   ----------------------------------
   

   Simple Messaging (Node 2 Sends Simple Messaging to Node 1 Example)

   Note: Simple Messaging works for all 3 nodes and router
   a. Input 3 in the console where node1-listener.py is run and press Enter to choose Simple Messaging Protocol

   [Node 2]
   Please select what protocol you would like to use:
   0. Ping Protocol
   1. Log Protocol
   2. Kill Protocol
   3. Simple Messaging
   5. ARP Poisoning
   6. TCP Connection
   7. IP SPOOFING
   3
   

   b. Insert the destination (Node 1's IP address) and press Enter

   Please insert the destination: 0x1A
   

   c. Insert the message you want to send to node 1 and press Enter

   Please insert the message you want to send: good morning node 1!
   

   Node 1 Console

   ----------- [15:22:56] -----------
   
   The packet received:
   Source MAC address: R1, Destination MAC address: N1
   
   Source IP address: 0x2A, Destination IP address: 0x1A
   
   Protocol: Simple Messaging
   
   Data Length: 020
   
   Message: good morning node 1!
   ----------------------------------
   

   Node 3 Console

   ----------- [15:22:56] -----------
   
   The packet received:
   Source MAC address: N2, Destination MAC address: R2
   
   Source IP address: 0x2A, Destination IP address: 0x1A
   
   Protocol: 3
   
   Data Length: 20
   
   Message: good morning node 1!
   
   PACKET NOT FOR ME. DROPPING NOW...
   ----------------------------------
   

   IP Filter/Firewall (only for node3)

   a. Input 4 in the console where node3-listener.py is run and press Enter to choose Configure Firewall

   [Node 3]
   Please select what protocol you would like to use:
   0. Ping Protocol
   1. Log Protocol
   2. Kill Protocol
   3. Simple Messaging
   4. Configure Firewall
   5. ARP Poisoning
   6. TCP Connection
   7. IP SPOOFING
   4
   

   b. Input the IP to be blocked

   Current firewall configuration:
   Blocked IPs: []
   Please enter the IP address to be blocked, or [exit]: 0x2A
   

   c. 0x2A is now blocked.

   IP Spoofing

   a. Input 7 in the console where node3-listener.py is run and press Enter to choose Simple Messaging Protocol

   [Node 3]
   Please select what protocol you would like to use:
   0. Ping Protocol
   1. Log Protocol
   2. Kill Protocol
   3. Simple Messaging
   4. Configure Firewall
   5. ARP Poisoning
   6. TCP Connection
   7. IP SPOOFING
   7
   

   b. Input the destination IP, fake IP to spoof, and the message

   Please insert the destination: 0x2A
   FAKE IP TO SPOOF: 0x21
   Please insert the message you want to send: hello
   

   c. Node 2 (0x2A) will now receive a packet from IP 0x21 (router's IP) and MAC N3 (Node3's MAC)

   ----------- [13:39:15] -----------
   
   The packet received:
   Source MAC address: N3, Destination MAC address: N2
   
   Source IP address: 0x21, Destination IP address: 0x2A
   
   Protocol: Simple Messaging
   
   Data Length: 5
   
   Message: hello
   ----------------------------------
   packet received
   

1. Input 5 in node2-listener.py to choose ARP Poisoning
2. Input the destination IP and the fake IP

   5
   Please insert the destination: 0x2B
   Please insert your fake IP: 0x21
   

3. Node 3 (0x2B)'s ARP Table now has been modified (notice how 0x21 is pointing to N2 instead of R2)

   {   
   "0x21": "N2", 
   "0x2A": "N2", 
   "0x2C": "N4"
   }
   

Note: this only works between node2-listener and node3-listener and attacker-node-listener needs to be run for hijacking

1. In node2-listener.py, input 6 to choose TCP connection

2. The TCP handshake and MITM hijacking will be done automatically

3. To prove the attack is successful, attacker can send another TCP packet a. In attacker-node-listener.py, input 6 to choose TCP Connection b. Enter destination as 0x2A and input any arbitrary random message

   Please insert the destination: 0x2A
   Enter message please: helllooo
   

   c. Node 2 will now accept the packet, thinking that it is from Node3 (with the correct SEQ and ACK, and the spoofed IP and MAC)

   The packet received:
   Source MAC address: N3, Destination MAC address: N2
   
   Source IP address: 0x2B, Destination IP address: 0x2A
   
   Protocol: TCP
   
   Data Length: 008
   
   TCP Control Flag: ACK
   
   Seq: 51
   
   Ack: 22
   
   Message: helllooo
   ----------------------------------
   0x2B
   dest ip in local arp table
   packet received
   

   d. Node 2 can also send TCP packets (by doing the same as step b. and c.) to Node 3, but Node 3 will drop the packet because the SEQ and ACK numbers are invalid

   The packet received:
   Source MAC address: N2, Destination MAC address: N3
   
   Source IP address: 0x2A, Destination IP address: 0x2B
   
   Protocol: TCP
   
   Data Length: 008
   
   TCP Control Flag: ACK
   
   Seq: 60
   
   Ack: 51
   
   Message: helloooo
   [!] Invalid TCP Packet, Packet has been dropped.
   

   e. Attacker node, however, will accept this packet

   The packet received:
   Source MAC address: N2, Destination MAC address: N3
   
   Source IP address: 0x2A, Destination IP address:
   
   Protocol: TCP
   
   Data Length: 008
   
   TCP Control Flag: ACK
   
   Seq: 60
   
   Ack: 51
   
   Message: helloooo
   ----------------------------------
   packet received