I have a server with 22 clients connected to it. I wanted to install some firewall and antivirus for protection. Any suggestions for which firewall and AV should i use and which is the best way to configure it ?
you haven't mentioned what kind of server it is? Windows or Linux?
If you haven't decided a solution yet, I would like you point to Linux based solution because its cost effective,flexible and more secure. in servers, Linux really shines. not to forget, its immune to all window's based malware
you can install centOS distro and use the following tools
^ +1 for Linus server. Also you are better off with a hardware firewall at the main internet access point than a software firewall on each computer. In a network each computer having a firewall only complicates thing a lot.