Well..there are tools.... But there not free!  At work, we look at all that stuff continuously.  Takes up a bit of space too for history so you can do queries.  Not sure if there are any free ones. It's quite a sniff. <div>
<br></div><div>Steve N0FPF<br><br>On Saturday, May 3, 2014, Kenny Richards <<a href="mailto:richark@gmail.com">richark@gmail.com</a>> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div dir="ltr"><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small">I was surprised there wasn't something already out there that did this, but in my 10 minutes of google searching I couldn't find anything. What I did find was the building blocks for making a tool for Bart's IP protocol stress test. (BIPPST) Â Someone already built the tool (<a href="http://nemesis.sourceforge.net/" target="_blank">http://nemesis.sourceforge.net/</a> ) to build various kinds of packets from a script, so you would just need to build the receiving in. This is the tool for generation I found, I'm sure there are lots over versions of this for security work floating around.</div>
<div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small"><br></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small">For what it is worth, I also noticed a series of outages last night with my Comcast business line. Started just after midnight and ended around 02:30 this morning. I wonder if this was a more general network maintenance event and not something specific.</div>
<div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small"><br></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small">Thanks</div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small">
Kenny</div></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Sat, May 3, 2014 at 10:33 AM, Bart Kus <span dir="ltr"><<a href="javascript:_e(%7B%7D,'cvml','me@bartk.us');" target="_blank">me@bartk.us</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Hi,<br>
<br>
During some cell site work last night, I seem to have experienced Comcast dropping packets from point A to point B simply based on the fact that their IP protocol was GRE (IP protocol 47). Â I also found some posts on the Internet that claim Comcast wishes to charge more money to transport GRE packets. Â I'm not sure if this is true, or if I made a mistake somehow in my traffic handling. Â Therefore...<br>
<br>
Would someone be willing to create software instruments to measure this claim in general? Â I'd like to see a transmitter and a receiver piece of software that can run on Linux to generate and record a sweep of IP packets carrying all possible protocol numbers (0-255). The protocol payloads themselves don't need to be well-formatted, just the protocol number in the IP header needs to be set. Â Your software will be considered successful if it measures 100% of all protocols as available over an unfiltered (eg: LAN) link.<br>
<br>
The results of such a measurement would be useful in gauging the ISP quality of any given carrier. Â It seems we're moving closer to Selective Protocol Service Providers (SPSP) and away from true Internet Service Providers (ISP) if this GRE finding turns out to be right.<br>
<br>
--Bart<br>
<br>
<br>
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