perfsonar-user - RE: [perfsonar-user] Perfsonar ports - tracepath blocked
Subject: perfSONAR User Q&A and Other Discussion
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- From: "Garnizov, Ivan (RRZE)" <>
- To: "Garnizov, Ivan (RRZE)" <>, Andrew Lake <>, "" <>, Brian Candler <>
- Subject: RE: [perfsonar-user] Perfsonar ports - tracepath blocked
- Date: Tue, 16 Feb 2016 14:47:39 +0000
- Accept-language: en-GB, de-DE, en-US
There is something sitting behind the 36334 port and if it is tracepath, then your tracepath access is blocked. One thing might worth checking is whether tracepath requests indeed set the correct port for the sender (in the case below 36334). But that would be, if you
really would like to test the implementation of tracepath. udp 0 0 0.0.0.0:36334 0.0.0.0:* 6344/tracepath Most likely some router is blocking traceroute on its way to the destination and it could be any direction. That (direction) can be verified easily on the remote end….with sniffing. Best regards, Ivan From: [mailto:]
On Behalf Of Garnizov, Ivan (RRZE) Hi, I believe this will add more clarity:
http://www.iptables.info/en/connection-state.html#UDPCONNECTIONS Best regards, Ivan From: Andrew Lake []
Hi, One clarification, we’re talking about a UDP socket so no connection is actually established. I believe tracepath, much like UDP traceroute, is just firing off UDP packets
with the hope of generating ICMP error messages it can use to produce it’s results. It doesn’t much care nor expect anything on the other end. Running a few tests the tracepath tests look complete to me even to hosts blocking ephemeral UDP ports. Did you encounter
some cases where this was not the case? Thanks, Andy On February 16, 2016 at 8:12:35 AM, Garnizov, Ivan (RRZE) () wrote:
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- [perfsonar-user] Perfsonar ports - tracepath blocked, Brian Candler, 02/15/2016
- RE: [perfsonar-user] Perfsonar ports - tracepath blocked, Garnizov, Ivan (RRZE), 02/16/2016
- Re: [perfsonar-user] Perfsonar ports - tracepath blocked, Brian Candler, 02/16/2016
- RE: [perfsonar-user] Perfsonar ports - tracepath blocked, Garnizov, Ivan (RRZE), 02/16/2016
- RE: [perfsonar-user] Perfsonar ports - tracepath blocked, Andrew Lake, 02/16/2016
- RE: [perfsonar-user] Perfsonar ports - tracepath blocked, Garnizov, Ivan (RRZE), 02/16/2016
- RE: [perfsonar-user] Perfsonar ports - tracepath blocked, Garnizov, Ivan (RRZE), 02/16/2016
- Re: [perfsonar-user] Perfsonar ports - tracepath blocked, Brian Candler, 02/16/2016
- RE: [perfsonar-user] Perfsonar ports - tracepath blocked, Garnizov, Ivan (RRZE), 02/16/2016
- RE: [perfsonar-user] Perfsonar ports - tracepath blocked, Andrew Lake, 02/16/2016
- Re: [perfsonar-user] Perfsonar ports - tracepath blocked, Brian Candler, 02/16/2016
- Re: [perfsonar-user] Perfsonar ports - tracepath blocked, Andrew Lake, 02/16/2016
- Re: [perfsonar-user] Perfsonar ports - tracepath blocked, Brian Candler, 02/16/2016
- Re: [perfsonar-user] Perfsonar ports - tracepath blocked, Brian Candler, 02/16/2016
- RE: [perfsonar-user] Perfsonar ports - tracepath blocked, Garnizov, Ivan (RRZE), 02/16/2016
- Re: [perfsonar-user] Perfsonar ports - tracepath blocked, Andrew Lake, 02/16/2016
- Re: [perfsonar-user] Perfsonar ports - tracepath blocked, Brian Candler, 02/16/2016
- RE: [perfsonar-user] Perfsonar ports - tracepath blocked, Garnizov, Ivan (RRZE), 02/16/2016
- RE: [perfsonar-user] Perfsonar ports - tracepath blocked, Garnizov, Ivan (RRZE), 02/16/2016
- RE: [perfsonar-user] Perfsonar ports - tracepath blocked, Andrew Lake, 02/16/2016
- RE: [perfsonar-user] Perfsonar ports - tracepath blocked, Garnizov, Ivan (RRZE), 02/16/2016
- Re: [perfsonar-user] Perfsonar ports - tracepath blocked, Brian Candler, 02/16/2016
- RE: [perfsonar-user] Perfsonar ports - tracepath blocked, Garnizov, Ivan (RRZE), 02/16/2016
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