If a udp datagram is sent from host a port p to host b port, Ask an Expert

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If a UDP datagram is sent from host A, port P to host B, port Q, but at host B there is no process listening to port Q, then B is to send back an ICMP Port Unreachable message to A. Like all ICMP messages, this is addressed to A as a whole, not to port P on A.

(a) Give an example of when an application might want to receive such ICMP messages.

(b) Find out what an application has to do, on the operating system of your choice, to receive such messages.

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Computer Engineering, Engineering

Category:- Computer Engineering
Reference No.:- M91770278

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