Software & network Firewall

Software firewall - specialized software running on an individual computer
Network firewall - a dedicated device designed to protect one or more computers

firewall
-A firewall can either be software-based or hardware-based and is used to help keep a network secure.
-Its primary objective is to control the incoming and outgoing network traffic by analyzing the data packets and determining whether it should be allowed through or not, based on a predetermined rule set.
- A network's firewall builds a bridge between an internal network that is assumed to be secure and trusted, and another network, usually an external (inter)network, such as the Internet, that is not assumed to be secure and trusted

Free software Firewall 
- Comodo Firewall
- Windows 7 Firewall Control
- Online Armor Free
- Private Firewall
- AVS Firewall
- Outpost Firewall Free
- TinyWall
- ZoneAlarm Free Firewall




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Categories: network