Re: auditing network traffic

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On 11/27/18 12:27 PM, Tim via users wrote:
> Tim:
>>> If I want to check on how much data my computer's been putting
>>> through my ISP over the last few days, is there anything logged by
>>> default that I can look at, or do need to install something extra?
> 
> Ed Greshko:
>> Are you saying you have a single system with only traffic going to
>> the ISP?
> 
> No, it's several devices going through a modem/router, which doesn't
> really give enough info, so I was hoping I could find something on the
> computer to rule it in or out as being the sudden upturn in traffic.
> 
> While basic info is easy to find out (like how much data since it
> connected), that doesn't tell me anything about what it used yesterday,
> or the day before, etc.
> 
> I'd been keeping an eye on that, day by day, manually, as I was getting
> closer to going over my monthly quota, then suddenly I've been rated
> limited as 12 gigs has gone through *somewhere*.
> 
> To make matters worse, the rate limiting is so severe that many
> websites just time out and fail (including the ISP's own website). 
> While the ISP claims that they throttle you, rather than charge you
> more or cut you off, to allow you to continue using the internet until
> the next month, it doesn't work.
> 
> Conversely, when they had a network configuration fault that limited me
> by the same amount, earlier this year, that speed was considered so
> unusable as to be worthy of giving me a refund.
> 
> It seems that in today's modern high-bandwidth internet, if you can't
> finish loading a page in a few seconds, it aborts on you.  To be more
> weird, the ISP has a transparent proxy, that ought to mitigate that
> issue (they could grab the page in one go, and feed it to you slowly). 
> For the major ISP that is the backbone for the entire country, they're
> very crap at doing their job.

Well, you could install cacti on a machine, then use it to collect and
graph the SNMP data from your devices--provided they provide SNMP
services and have MIBs you can use. That's what we do, but we're a
streaming company with a LOT of servers, switches and routers and two
10Gbps uplinks. Perhaps that's overkill for you.
----------------------------------------------------------------------
- Rick Stevens, Systems Engineer, AllDigital    ricks@xxxxxxxxxxxxxx -
- AIM/Skype: therps2        ICQ: 226437340           Yahoo: origrps2 -
-                                                                    -
- Political Correctness: The insane doctrine that postulates that it -
-     is entirely possible to pick up a turd by the clean end.       -
----------------------------------------------------------------------
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