09-21-2011
SQUID proxy : How do I limit internet connectivity to X hrs/day
Hi Everyone!
A friend of mine is looking for a way to limit time his kids spent on the internet. I told him he should try out Squid proxy server. He now tries to find a way to limit total time spend on the internet to "X" hours a day, at any time during the day.
I remember there are built-in rules in Squid to "open" internet access in certain times of the day (you can say
www.site.com is only reachable after 17:00 for example), but there seems no built-in rule to open internet access for total of say 2 hours a day anytime between 8am and 8pm.
I was wondering if someone could throw name of an external plugin/add-on to Squid that would provide such functionality ... ?
Kind regards,
T.
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LEARN ABOUT SUSE
mrtg-squid
MRTG-SQUID(1) mrtg MRTG-SQUID(1)
NAME
mrtg-squid - using mrtg to monitor Squid
DESCRIPTION
Squid 2.3 knows SNMP and you can therefore use mrtg to monitor it quite easily.
I have made some modifications to mrtg which simplify this. My work is based on earlier modification made by: matija.grabnar@arnes.si and
kostas@nlanr.net.
MODIFICATIONS
I added new code for displaying correct units to the previous patches "perminute" and "perhour" ("option" tokens), which allows other mea-
surement in addition to "persecond".
Then I created a new option token "dorelpercent" which allows the calculation of the percentage of IN-stream / OUT-stream on the fly and
then displays it on a fixed scale from 0% to 100%. For my requirements, this does good work. Maybe someone wants a floating scale. It
should not be a problem to implement it, too (but give me an option to keep my fixed scale). If IN-stream is always less than OUT-stream
both lines (OUT-stream and relative percent) are always displayed on top of IN-stream bulk. Otherwise this option makes no sense. With this
option you can display hitrates, errorrates (for router monitoring: rel. droprates) easily now.
If you use this options please consider that you need a 5th colourname/value pair in your Colours statements!
Due to some discussion on this list, I have implemented two tokens too:
"kilo" and "kMG"
"kilo" should contain the value of k (1000 or 1024), where 1000 is the default.
"kMG" is a comma separated list of multiplier prefixes, used instead of "", "k", "M", "G", "T" on the MRTG display. Leave the place free,
if you want no prefix.
Also an incomplete list of OIDs for the new SQUID release is added.
I hope you enjoy it.
CONFIG EXAMPLE
You can measure responsetimes in ms and display it with MRTG correctly with:
kMG[measure-ms]: m,,k,M,G,T
short[measure-ms]: s
You can display now MB/s as 1024*1024 B/s with:
kilo[volume]: 1024
A sample config for squid:
Target[proxy-hit]: cacheHttpHits&cacheProtoClientHttpRequests:public@proxy
Title[proxy-hit]: HTTP Hits
PageTop[proxy-hit]: <H2>proxy Cache Statistics: HTTP Hits / Requests</H2>
Suppress[proxy-hit]: y
LegendI[proxy-hit]: HTTP hits
LegendO[proxy-hit]: HTTP requests
Legend1[proxy-hit]: HTTP hits
Legend2[proxy-hit]: HTTP requests
YLegend[proxy-hit]: perminute
ShortLegend[proxy-hit]: req/min
Options[proxy-hit]: nopercent, perminute, dorelpercent
Target[proxy-srvkbinout]: cacheServerInKb&cacheServerOutKb:public@proxy
Title[proxy-srvkbinout]: Cache Server Traffic In / Out
PageTop[proxy-srvkbinout]: <H2>Cache Statistics: Server traffic volume (In/Out) </H2>
Suppress[proxy-srvkbinout]: y
LegendI[proxy-srvkbinout]: Traffic In
LegendO[proxy-srvkbinout]: Traffic Out
Legend1[proxy-srvkbinout]: Traffic In
Legend2[proxy-srvkbinout]: Traffic Out
YLegend[proxy-srvkbinout]: per minute
ShortLegend[proxy-srvkbinout]: b/min
kMG[proxy-srvkbinout]: k,M,G,T
kilo[proxy-srvkbinout]: 1024
Options[proxy-srvkbinout]: nopercent, perminute
AUTHOR
Andreas Papst <andreas.papst@univie.ac.at> Dirk-Luder Kreie <deelkar@gmx.de>
2.16.2 2008-05-16 MRTG-SQUID(1)