Proxy server: Squid + dansguardian

[Francisco José Márquez Gómez]

Hi friends,

I need setup a proxy server with RHEL5.6_x86-64 + squid + dansguardian 
with NTLM auth support.

This server will be used by about 200 users, but this value can be 
increased in near future until about 500 users.

Somebody know which HW requeriments should I consider?

Regards,
F.J