i am running cable network, system running fedora core 4, memory 512 mb, and 1gb swap, there are 100 users. running fedora in CLI mode.
having problem that i want to allow each and every web site.

- should i open all ports > 1024 and nat them

but how much memory i need, for that.

i switch off my server after a week for 15 minutes.

currently there isn't any restriction in squid. but client are unable to open
http://www.funmaza.com.

no restricatioin in iptables.

any suggestion.

Why do you use squid at all. In your case you want your users to be allowed access to each and every website. That means open access to all the content on the Internet. I think the best and most efficient way to achieve that is set your box up as a router so that it forwards everything. Even if you want to apply restrictions later on, you can do that by using iptables. Moreover setting up your box as a router and running a DHCP server would allow your users to connect to the Internet without any configuration at all, which would save you lots of support calls.

However, if you insist on using squid and and also want your users to be at ease i.e. the users don;t have to do any configuration then you can setup whats called transparent proxy. That would be a combination of squid and some iptables rules and is a nice way to control things if you like to be working with squid. For more information you can look at the transparent proxy howto at http://www.tldp.org.

There is no apparent reason why the clients shouldn't be able to access the website. As yousaid there is no rule in iptables blocking access to the website. May be the website was unavailable for sometime?