I am currently searching a (if possible completely free security-solution for a Computer-Network of a really small private School in the USA.
The Infrastructure: Currently the school has one Server running Windows Server 2003 Small Business Version with 25 slow (7 years old - basic info: most of them with 1,6 GHZ Pentium 4, 512 MB Ram, Windows XP Professional and Internet Explorer or Firefox as StandardBrowser). Additional to this the teachers have notebooks with nearly the same specifications, which they also use at home and students use them for presentations.
Currently they don't have any Security Software except AVG Free Antivirus (old versions...) and all users (except one admin-account) have very limited access rights at the workstations.
One of the Students named the program Panda Cloud Antivirus and McAfee Site Advisor (personally I think that are great free programs) - What do you think about these Programs and what else can be used (low budget or free...) to make the complete Network much more secure? (Also they don't use a proxy server and no bad-hosts-blacklist to block access to e.g. porn website or other stuff).
I researched a bit and don't find any good and complete Solutions which don't cost to much for this school....
Thanks for every comment!