traceroute ICMP- ( 3 ), TTL ( ) 1. , . TTL, 1, ICMP- "time exceeded in transit", . Traceroute , ( ). traceroute , TTL, 2, TTL . , TTL=1, "time exceeded in transit".
, . .
IP- TTL = 1 ICMP- , . : traceroute UDP- . 33434 + ( ) - 1. UDP-, , ICMP- . , , traceroute , ICMP- .