Question : How to setup a squid proxy

How to configure squid proxy.I want to allow some users to access the internet only at certain time and some users all the time. What is the diffrence between Squid proxy and Socks5 proxy ?

Answer : How to setup a squid proxy

> How to configure squid proxy.

http://squid.visolve.com/squid24s1/contents.htm

> I want to allow some users to access the internet only at certain time and some users all the time.

http://squid.visolve.com/squid24s1/access_controls.htm (see the section "time" in addition to a way to identify users (e.g. by ip address - src)

> What is the diffrence between Squid proxy and Socks5 proxy?

Squid is for web access. Socks is a general network proxy.
http://www.squid-cache.org/
http://www.socks.permeo.com/AboutSOCKS/WhySOCKS.asp