Let us say I create a valid packet (contains telnet request) with TTL value less than the TTL value required to reach the destination IP. Will the computer that receive the IP packet with TTL=1 (become 0 after decrement) in the path to the destination IP send any ICMP response to me?
1 Answer
Yes, the router that decrements the TTL to 0 will discard the packet and send an ICMP time exceeded message (type 11) to the source.