Most virus protection softwares are for windows client side operating systems and do not support the server side operating systems like windows 2000, 2003 and 2008 servers but I would like to share a very good anti-virus software that can help you save your server from most recent virus attacks and its completely free (standard edition) but if you like to go for the professional addition you can purchase it and get the firewall protection free.
Protects your computers against all types of viruses, Trojans, Worms, Rootkits and other malicious programs. Ease of use, Active Defense technology, Patented Unknown Virus Scan&Clean technology and Patented Smartupdate technology make RISING Antivirus ‘ install-and-forget ‘ product that lets you focus on what you really want to do.
Computer Security Protection
Based on triple layers security defense structure of Rising Cloud Security 3.0 and, integrated traditional monitor and intelligent active defense functions, Rising Antivirus 2011 instantly defenses personal computer security.
Taking Rising System Kernel Reinforce into web browser program and, intercept unknown Trojan, Backdoor, Worm and other malicious viruses at real-time.
Office Software Protection
Automatically intercept unknown Trojan, Backdoor, Worm and other malicious viruses program and, prevent malicious attacks which exploit office software unknown vulnerability away while launching office software.
System Kernel Reinforcement
Providing professional computer users two optional customizable methods as Templates and Custom, to detect, monitor, and intercept all malicious behaviors from viruses program and, reinforce Windows system kernel.
You can download the Rising Antivirus from under given location: