Squid Proxy makes Internet connection very slow

[wizzkid]

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Hi Guys,

I've setup Squid proxy on our network to supposedly cache the sites to make faster for users, however when someone downloads a data from the net work upstream data, it make the entire internet runs very slow, and when I checked on our bandwidth utilization from my ISP, the maxed out the upstream. This usualy happen even only 1 person is uploading data.

(1.) Is there a way to limit such activity? limit downstream and upstream on certain cleints? or even blocks of clients, (eg. limit upsteam downstream on client with ip address 192.168.1.20-192.168.1.40 with only 1Mbps bandwidth)

(2.) Is there a way to limit port 21 (ftp) to only 100Kbps, etc.

This has been my problem for a month now, and still finding solutions.

Tried installing CBQ, but seems not working.

Here's my Server Info
OS: CentOS release 5.7 (Final)
IPtable: iptables-1.3.5-5.3.el5_4.1
Squid: squid-2.6.STABLE21-6.el5


Thanks!

[scathefire]

There are several ways to do it.

If you have the limit module in iptables: The iptables Rate-Limiting Module - PenguinSecurityWiki

How about tc?: Traffic Shaping using tc - Server Fault

Additional reading: Traffic Control HOWTO