ICMP error message format. ICMP error messages of Type: 3 represent a... | Download Scientific Diagram
![networking - What's the Destination unreachable ICMP packet(ICMP payload the UDP) usage? - Network Engineering Stack Exchange networking - What's the Destination unreachable ICMP packet(ICMP payload the UDP) usage? - Network Engineering Stack Exchange](https://i.stack.imgur.com/muQYW.png)
networking - What's the Destination unreachable ICMP packet(ICMP payload the UDP) usage? - Network Engineering Stack Exchange
![Connection attempts: (a) successful TCP connection (b) TCP destination... | Download Scientific Diagram Connection attempts: (a) successful TCP connection (b) TCP destination... | Download Scientific Diagram](https://www.researchgate.net/publication/237065198/figure/fig4/AS:668423302434819@1536375942104/Connection-attempts-a-successful-TCP-connection-b-TCP-destination-port-closed-c.png)
Connection attempts: (a) successful TCP connection (b) TCP destination... | Download Scientific Diagram
![networking - What's the Destination unreachable ICMP packet(ICMP payload the UDP) usage? - Network Engineering Stack Exchange networking - What's the Destination unreachable ICMP packet(ICMP payload the UDP) usage? - Network Engineering Stack Exchange](https://i.stack.imgur.com/Z6phZ.png)