|
|
Sponsored Content
Operating Systems
Linux
Using SQUID to reduce traffic usage in the office - how effective?
Post 302264353 by juhanitali on Wednesday 3rd of December 2008 05:29:17 PM
12-03-2008
Quote:
We are working in the office where about 5-6 machines have Internet access. We pay for each GB of traffic we consume and that's quite expensive. Almost no worker download files. Just surfing websites (including our corporate one that is located outside of local network thus we pay for accessing it too).
I am thinking of purchasing low-end cheap PC to install SQUID and setup NAT to direct all office internet traffic through it.
Should I expect traffic consumption reduce counted by ISP in this case at all? If yes, what is the estimated factor of bandwidth consumtion reduce? I understand, that that depends on what internet sites are the staff surfs etc etc. I just care about something average coming from someone's practice. Increasing SQUID HDD cache to 10-20Gb is not a big problem I think. HDDs are pretty big and cheap nowadays.
I am thinking of purchasing low-end cheap PC to install SQUID and setup NAT to direct all office internet traffic through it.
Should I expect traffic consumption reduce counted by ISP in this case at all? If yes, what is the estimated factor of bandwidth consumtion reduce? I understand, that that depends on what internet sites are the staff surfs etc etc. I just care about something average coming from someone's practice. Increasing SQUID HDD cache to 10-20Gb is not a big problem I think. HDDs are pretty big and cheap nowadays.
quick answer: forget squid. Won't help enough. Probably around 20%.
Better try to "upgrade" the pc-s web browsers, flashblock, adblock, maybe noscript etc but please don't overdo it. Maybe kill yourtube, but usually it is better to get a better network connection, for corporate web surfing
long way:
think about the problem, how important it is for you. Are you sure that somebody will say thanks to you if you micromanage their web surfing habits? Is it really worth spending your time in days?
If you decide that it is worth the hassle, then you should analyze the traffic. And go from there. In analyzing, the squid-s access.logs are a simple place to look. So you can use squid, but mostly just to get the logs.
We used to run squids in front of all gov users (tens of thousands of users, out-of-country access logs were 2-3G/day) but at the present time it is better just to buy slightly more bandwidth, most of the traffic is not cacheable. Besides, squid is single threaded - will use only 1 cpu.
|
|
9 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
what's the most efficient and effective search for a file in a dir ?
I see many guys use this
# find - print
or something as such ? and sometimes pipe it to something else ?
Is there a better way of using "grep" in all of this ?
thanks
simon2000 (3 Replies)
Discussion started by: simon2000
3 Replies
2. UNIX for Advanced & Expert Users
I am using the ZLIB_VERSION "1.2.3" . The memory requirement for Zlib/GZIP compression is stated as
/* The memory requirements for deflate are (in bytes):
(1 << (windowBits+2)) + (1 << (memLevel+9))
that is: 128K for windowBits=15 + 128K for memLevel = 8 (default values)
... (0 Replies)
Discussion started by: Parmod Garg
0 Replies
3. HP-UX
how can I find cpu usage memory usage swap usage and
I want to know CPU usage above X% and contiue Y times and memory usage above X % and contiue Y times
my final destination is monitor process
logical volume usage above X % and number of Logical voluage above
can I not to... (3 Replies)
Discussion started by: alert0919
3 Replies
4. AIX
How to monitor the IBM AIX server for I/O usage, memory usage, CPU usage, network usage, storage usage? (3 Replies)
Discussion started by: laknar
3 Replies
5. UNIX for Advanced & Expert Users
Not sure if this is the best place to post, but at this point my question seems to be an advanced topic.
I'm curious why it is that the "office phone" column of finger does not seem to report anything even when data is entered in the GECOS field of /etc/passwd. I am using Ubuntu 8.10, kernel... (1 Reply)
Discussion started by: gratuitous_arp
1 Replies
6. UNIX for Dummies Questions & Answers
Help regarding effective usage of diff for comparing files
Hi All,
I have few doubts regarding best usage of diff command. I also have some questions with out put of diff command.
File1:
ABC
DEF
File2:
ABC
DEFAA
diff file1 file2
2c2
<DEF
----- (1 Reply)
Discussion started by: sarbjit
1 Replies
7. IP Networking
Hi,
I would like to ask some networking solution regarding my work LAN and 3G usb network problem. I want to route my internet traffic to the 3G network and sometimes connect to some of my work network for ssh to configure some workstation or print something. Currently my problem is i can't... (0 Replies)
Discussion started by: jao_madn
0 Replies
8. IP Networking
Hello,
I have a pretty useless satellite link at home (far from any civilization), so I wanted to set up caching in order to speed things up. My Squid 2.6 runs "3128 transparent" and is set up quite well on a separate machine.
I also have my dd-wrt router to move all port 80 traffic through... (0 Replies)
Discussion started by: theWojtek
0 Replies
9. AIX
Frequently i am getting "total CPU is now 100.00%, which is above the error threshold (90%)" this error . (3 Replies)
Discussion started by: ranjithm
3 Replies
LEARN ABOUT REDHAT
squid_unix_group
squid_unix_group(8) System Manager's Manual squid_unix_group(8) NAME
squid_unix_group - Squid UNIX Group external_acl helper SYNOPSIS
squid_unix_group [-g groupname] [-g groupname...] [-p] DESCRIPTION
This helper allows Squid to base access controls on users memberships in UNIX groups. -g groupname Specifies a group name to match. -p Also match the users primary group from /etc/passwd EXAMPLES
This squid.conf example defines two Squid acls. usergroup1 matches users in group1, and usergroup2 matches users in group2 or group3 external_acl_type unix_group %LOGIN /usr/local/squid/libexec/squid_unix_group -p acl usergroup1 external unix_group group1 acl usergroup2 external unix_group group2 group3 NOTES
By default up to 11 groups can be matched in one acl (including commandline specified groups). This limit is defined by MAX_GROUPS in the source code. AUTHOR
This manual page was written by Henrik Nordstrom <hno@squid-cache.org> squid_unix_group is written by Rodrigo Campos <rodrigo@geekbunker.org> KNOWN ISSUES
Does not understand gid aliased groups sometimes used to work around groups size limitations. If you are using gid aliased groups then you must specify each alias by name. QUESTIONS
Any questions on usage can be sent to Squid Users <squid-users@squid-cache.org> REPORTING BUGS
Report bugs or bug-fixes to Rodrigo Campos <rodrigo@geekbunker.org> or Squid Developers <squid-dev@squid-cache.org> SEE ALSO
group(5),passwd(5) Squid UNIX Group helper 12 August 2002 squid_unix_group(8)