5 open source alternatives for routing/firewall

Economical and flexibleOpen source software offers an economical and flexible option for deploying basic home, SMB or even enterprise networking. These open source products deliver simple routing and networking features, plus they are combined with security functionality, starting with a basic firewall and possibly including antivirus, antispam and Web filtering. These products can be downloaded and deployed on your own hardware, on a virtual platform, or in the cloud. Many of them sell pre-conf