[Cerowrt-devel] Turning off the probe blocker

[Dave Taht]

On Thu, Jul 11, 2013 at 11:27 AM, Jim Gettys <jg at freedesktop.org> wrote:
>
>
>
> On Thu, Jul 11, 2013 at 1:40 PM, Dave Taht <dave.taht at gmail.com> wrote:
>>
>> I incidentally got smokeping up and running on a beaglebone black to
>> monitor latencies better across the whole network at the yurtlab. For
>> those of you with ipv6, it's currently globally reachable:
>>
>>
>> http://monitor.lab.taht.net/cgi-bin/smokeping.cgi?target=Campground-5ghz-Radios
>>
>> There are numerous options (like traceroute, etc) to put into
>> smokeping, which I'd like to add but haven't wrapped my head around.
>> Can't get fastcgi to work with it on lighttpd, either.
>>
>> I have mrtg running on a pi, too, that I will move over to the blacks.
>> Also have the nifty babelweb utility running on the pi - but the pi
>> just doesn't have the oomph (nor does it has fq_codel) to do much
>> more, so...
>>
>> I had really once hoped to make cerowrt "do everything", but the black
>> + debian makes doing "everything" a lot easier when you can easily run
>> perl and python...
>>
>> The monitor box is running over a minimum of 3 hops right now before
>> running across the rest of the mesh network.
>>
>> ... just wish the beaglebone black had a case I could wallmount with
>> screws rather than velcro...
>
>
> Very cool.

Nice stats for an oft-loaded fq_codel based wifi mesh network with not
a lot of fixes (besides disabling 802.11e at key points so far)!

I have seen much, much, much, worse from most other meshes.

> What frequency is smoke ping probing at?  This is tunable, you know.

The defaults, whatever they are.

> It's also possible to configure smokeping to report from multiple probing
> locations, and have the rollup on a central web site; I dunno if you had
> come across that in your adventures.

Intent is to deploy at 3 locations internally (at the middle of the
mesh and two of the furthest end points), and to also be probing
through the link from a box colocated with the gateway.

Ran out of time to muck with it this week, was delighted with the
dataset so far on a live network, would like to be able to compare
mrtg and smokeping more directly however.

>
> Jim
>>
>>
>> On Thu, Jul 11, 2013 at 10:31 AM, Richard A. Smith <richard at laptop.org>
>> wrote:
>> > On 07/11/2013 01:00 PM, Dave Taht wrote:
>> >>
>> >> On Thu, Jul 11, 2013 at 9:42 AM, Richard A. Smith <richard at laptop.org>
>> >> wrote:
>> >>>
>> >>> How to I disable the probe blocker?  I'm trying to do some port
>> >>> forwarding
>> >>> and every time I nmap my box trying to figure out if its working I get
>> >>> banned from ssh for 2 hours.
>> >>
>> >>
>> >> Heh. See the relevant telnet (and ftp, I think) entries in
>> >> /etc/xinetd.d and change them to disable = yes. You can probably do
>> >> this at a finer grained basis
>> >
>> >
>> > Thanks.  I'll mess with that once I have local access again.
>> >
>> >
>> > --
>> > Richard A. Smith  <richard at laptop.org>
>> > One Laptop per Child
>>
>>
>>
>> --
>> Dave Täht
>>
>> Fixing bufferbloat with cerowrt:
>> http://www.teklibre.com/cerowrt/subscribe.html
>> _______________________________________________
>> Cerowrt-devel mailing list
>> Cerowrt-devel at lists.bufferbloat.net
>> https://lists.bufferbloat.net/listinfo/cerowrt-devel
>
>



-- 
Dave Täht

Fixing bufferbloat with cerowrt: http://www.teklibre.com/cerowrt/subscribe.html