Firewall
A hardware firewall guards the network at its edge: it filters traffic, blocks attacks and decides which applications may reach the internet. Devices in this category suit small businesses and advanced home networks, from compact security gateways to models with a VPN server, content filtering and intrusion prevention. Throughput with security features enabled is the figure to watch, along with the number of simultaneous connections, port count and VLAN support. Cloud-managed models simplify administration when several sites share one setup.
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