Traceroute can be used with ICMP, UDP and TCP, depending on your operating system. Traceroute Command. Let’s see this in action. I will use the following topology for this demonstration: Above we have two host computers. H1 is a Windows computer ( and H2 a Linux computer ( running Ubuntu.

traceroute Guide - plus the 3 Best traceroute & tracert SolarWinds Traceroute NG (FREE TOOL) SolarWinds is one of the biggest players in the network … Windows firewall udp traceroute blocking | Jun 19, 2008 iptables - Does traceroute use UDP or ICMP or both The type of packet that is sent differs depending on the implementation. By default Windows tracert uses ICMP and both Mac OS X and Linux traceroute use UDP. I don't have BSD or Solaris machines or any other OS on hand to check but the man page for the Mac OS X … How to Use the traceroute Command on Linux

traceroute Guide - plus the 3 Best traceroute & tracert

Traceroute is using ICMP packets (plus UDP on Linux systems, but that's outside the scope of this blog entry. You can read more about it on the page I linked above). But even for an outgoing traceroute you need to accept incoming ICMP packets.

Environment: Windows Vista, CentOS 5 Concepts: 1. What's TCP traceroute TCPtraceroute is a traceroute implementation using TCP packets. The more traditional traceroute(8) sends out either UDP or ICMP ECHO packets with a TTL of one, and increments the TTL until the destination has been reached.

When the TTL on a packet reaches 0, the router is expected to return an ICMP time Exceeded message to the source computer. tracert determines the path by sending the first echo Request message with a TTL of 1 and incrementing the TTL by 1 on each subsequent transmission until the target responds or the maximum number of hops is reached. Traceroute - Comment Ça Marche