1.1.d (i) ICMP Unreachables, and Redirects

The Internet control message protocol (ICMP) has many types of messages and codes (sub types).   The two discussed below are Type 3 – Destination Unreachable, and Type 5 – Redirect as it relates to 1.1.d (i) ICMP unreachable, redirect. Type 3 – Destination Unreachable: This type of message is sent back to the source [...]