howto block spyware+virus+malware

hello forum , I want to ask them like I can block spyware+malware in my network lan , I have a server proxy, they know some project that joins with the proxy squid ...

I have many pc with infected spyware


and I have blocked many website **** and xxx



thak forum

 

Did you have a look here? http://www.howtoforge.com/linux_secure_browsing_squid