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Re: Data usage reported in log files

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Gentlemen, and it never occurred to you that there are other types of
traffic besides HTTP / HTTPS, right?

DNS, ICMP, other protocols?


11.03.2017 2:44, Yosi Greenfield пишет:
> Aha! That could be it. I use sslbump, but not for all users. I'll
> check that out, although I think that it's a problem even for bumped
> users. Even for bumped users we don't bump all sites, so that really
> could be it.
>
> Thanks!
>
>
> -----Original Message-----
> From: squid-users [mailto:squid-users-bounces@xxxxxxxxxxxxxxxxxxxxx] On
> Behalf Of Marcus Kool
> Sent: Friday, March 10, 2017 3:38 PM
> To: squid-users@xxxxxxxxxxxxxxxxxxxxx
> Subject: Re:  Data usage reported in log files
>
>
>
> On 10/03/17 16:27, Yosi Greenfield wrote:
>> Thanks!
>>
>> Netflow is much larger.
>>
>> I really want to know exactly what site is costing my users data. Many 
>> of our users are on metered connections and are paying for overage, 
>> but I can't tell where that overage is being used. Are they using 
>> youtube, webmail, wetransfer? I see only a fraction of their actual 
>> proxy usage in my squid logs.
>>
>> Data compression would give the opposite result, so that's not what 
>> I'm seeing.
>>
>> Any other ideas?
> Is there any traffic that is not directed to Squid?
>
> Do you use ssl-bump in bump mode ?
> If not, Squid has no idea how many bytes go through the (HTTPS) tunnels.
>
> Marcus
>
>
>> -----Original Message-----
>> From: squid-users [mailto:squid-users-bounces@xxxxxxxxxxxxxxxxxxxxx] 
>> On Behalf Of Antony Stone
>> Sent: Friday, March 10, 2017 2:21 PM
>> To: squid-users@xxxxxxxxxxxxxxxxxxxxx
>> Subject: Re:  Data usage reported in log files
>>
>> On Friday 10 March 2017 at 20:14:36, Yosi Greenfield wrote:
>>
>>> Hello all,
>>>
>>> I'm analyzing my squid logs with sarg, and I see that the number of 
>>> bytes reported as used by any particular user are often nowhere near 
>>> the bytes reported by netflow and tcpdump.
>> Which is larger?
>>
>>> I'm trying to trace my users' data usage by site, but I'm unable to 
>>> do so from the log files because of this.
>> Well, what is it you really want to know?
>>
>> netflow / tcpdump will give you accurate numbers for the quantity of 
>> data on your Internet link - I assume this is what you're most interested
> in?
>> Squid will show you what quantity of data goes to/from the clients, 
>> but is that really important?
>>
>>> Can someone please explain to me what I might be missing? Why does 
>>> squid log report one thing and netflow and tcpdump show something 
>>> else?
>> Data compression?
>>
>> HTTP responses are often gzipped, so if tcpdump is showing you smaller 
>> numbers of bytes than Squid reports, that's what I'd look at first.
>>
>>
>> Antony.
>>
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-- 
Bugs to the Future

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