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| − | = Overview =
| + | #REDIRECT [[traceroute]] |
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| − | == vs. UDP/ICMP ==
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| − | The problem with [[Traceroute|traceroutes]] nowdays is that most CPE and routing devices filter out unsolicited UDP packets, some even DROP the incoming packet so that it receives no icmp-port-unreachable reply, thus giving the famous * * *.
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| − | == What you can do ==
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| − | === Windows ===
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| − | [http://winmtr.sourceforge.net/ WinMTR]
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| − | mtr combines the functionality of the '[[traceroute]]' and 'ping' programs in a single network diagnostic tool.
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| − | As mtr starts, it investigates the network connection between the host mtr runs on and a user-specified destination host. After it determines the address of each network
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| − | hop between the machines, it sends a sequence ICMP ECHO requests to each one to determine the quality of the link to each machine. As it does this, it prints running
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| − | statistics about each machine.
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| − | === Linux ===
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| − | Some distributions (including [[http://www.gentoo.org/ gentoo]]) allow you to run the [[traceroute]] command from the command line as follows:
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| − | traceroute -T -p 80 domain.tld
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| − | [http://www.bitwizard.nl/mtr/ mtr]
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| − | Same as above, only for [[Linux]].
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| − | {{wrongPerson}}{{expand}}{{merge|traceroute}}{{countermeasures}}
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