[HamWAN PSDR] Request for Software - IP Protocol Filtering Measurement

[Bart Kus]

Ah, forgot to update!  Turns out, nmap has something like this built in.

nmap -sO

              -sO: IP protocol scan

So there's the transmitter.  On the receiver side, a tcpdump might work 
with protocol # extraction via bash script or something.  Not a slick 
integrated package, but something at least.

--Bart


On 05/05/2014 06:06 PM, Rob Salsgiver wrote:
> Don't think these do it exactly as you indicated, but they might get you to
> the ultimate goal of testing a flaky connection....
>
> ./paping
> ./hping  or  ./hping3
>
> Rob
>
> -----Original Message-----
> From: PSDR [mailto:psdr-bounces at hamwan.org] On Behalf Of Bart Kus
> Sent: Saturday, May 03, 2014 10:34 AM
> To: Puget Sound Data Ring
> Subject: [HamWAN PSDR] Request for Software - IP Protocol Filtering
> Measurement
>
> Hi,
>
> 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).  I also found some posts on the
> Internet that claim Comcast wishes to charge more money to transport GRE
> packets.  I'm not sure if this is true, or if I made a mistake somehow in my
> traffic handling.  Therefore...
>
> Would someone be willing to create software instruments to measure this
> claim in general?  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.  Your software will be considered successful if
> it measures 100% of all protocols as available over an unfiltered (eg: LAN)
> link.
>
> The results of such a measurement would be useful in gauging the ISP quality
> of any given carrier.  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.
>
> --Bart
>
>
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