How does employing an adversarial mindset affect decisions to implement RIP in the network? Construct your answer using one of the six fundamental design principles identified below:

• Separation of domains
• Isolation
• Modularity
• Layering
• Least privilege
• Minimization of implementation 

Identify at least one vulnerability that RIP introduces related to the fundamental design principle that you chose

Answer:

Minimization of implementation affect decisions to implement RIP:

• Router information protocol works on several design principles. One of which is less implementation. It uses distance as a vector and uses hop count to find out the best path to travel from source to destination.
• It is very simple and easy to understand.
• It reduces the number of implementations
• RIP is considered best for internetwork routing.
• Due to fewer implementations, it is not suitable for a large network with different paths.
• RIP will work better when it is used on a small network that changes frequently.
• One uses RIP timers as the entire routing table is sent after every 30 seconds by default.
• Update intervals can be forced on the routers to update more or less frequently.
• All routers participating in the RIP routing process are marked with the same update interval making the implementation time minimal.
• It is not good for large networks as if a router does not receive an advertisement in 180 seconds, It will mark that route as unreachable 
• The time will be expired and removed by the flush timer.

Vulnerability in minimization of implementation:

• New routes can be added by advertising that route with a spoofed RIP message. 
• Existing routes can be deleted by advertising a new route with a better metric as compared to the existing route. 
• A DoS can be created and all traffic will be redirected to the non-existent router which will even issue ICMP redirects to reroute existing traffic to the black hole.

Step-by-step explanation

Adversarial mindset affecting decisions:

• RIP provides dynamic routing through its various design principles including minimization of implementation. 
• Implementation is minimized as it will do all the routing itself. 
• For small internetworks, it is a practical and viable dynamic routing protocol solution. 
• It will take more time to converge the failures.
• This Mindset will affect the decision as the summarized routes are processed first.
• Child routes on the chosen routes are skipped to reduce the required processing time.

Vulnerability:

• As the implementation is minimized, it overlooks the child routes which can become a threat for the data packets sent over the route having child routes.
• Any attack can be made by the child routes. 

REFERENCE:

(2021). Retrieved 5 April 2021, from https://support.huawei.com/enterprise/en/doc/EDOC1000142059/9f0f61f8/rip-principles