[ale] home network monitoring

[Pete Hardie]

​Responses  inline​

On Fri, Dec 11, 2015 at 12:38 PM, Alex Carver <agcarver+ale at acarver.net>
wrote:

>
> Are you using stock firmware on the ASUS or open source (DD-WRT,
> OpenWRT, etc.)?
>
>
​Stock.
​


> Are you able to look at the diagnostic information on the cable modem
> (such as routing tables, etc.)?
>

​I believe I can - I did at one point, but have not recently
​


>
> Ping monitoring to Google DNS and Comcast DNS would probably be
> sufficient (no need to ping Wikipedia and burn their resources, Comcast
> has more money :) )
>

​Good point.  Switching to Ping Trump.com  :)
​


>
> I would also consider having your modem and router logs relayed to a
> machine with an actual hard drive so you can review them.  (You just
> need rsyslogd or syslog-ng to open a port and use filtering to dump the
> logs to their own files.)
>

​Good idea - I will look into that.  I should be able to get the router to
do that​ - I had it's predecessor set up for that once


> I would agree with Derek that it sounds like some of your hardware may
> be misbehaving and monitoring that hardware directly would be beneficial.
>
> By example, I have Uverse with static IPs but the modem performs
> connection tracking through the NAT tables even on those (dumb but
> true).  The state table is not very large so occasionally something like
> a massive probe from the outside will fill the table and my external
> connections drop.  Once the table entries expire away, everything comes
> back.
>
> I have OpenWRT on my router and use mrtg to monitor the traffic volume
> while its system logs are sent to another machine running syslog-ng
> where I can keep a window up running tail on that file.  The modem has
> the same configuration for its logs but I can't run mrtg on it.
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-- 
Pete Hardie
--------
Better Living Through Bitmaps
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