CASP+ Definitions: Router
In the context of cybersecurity, a router is a network device that forwards data packets between computer networks. Routers are typically used to connect multiple devices and networks together, allowing them to communicate with one another and access the internet.
Routers can also provide a level of security for computer networks by using features such as access control lists (ACLs) and firewalls to control access to the network and protect against unauthorized access and attacks.
One of the main functions of a router is to determine the best path for data packets to take between networks. This is done using routing protocols, which allow routers to exchange information about the networks they are connected to and the paths that data can take to reach their destination.
Routers can also be configured to provide additional security features, such as virtual private networks (VPNs), which encrypt data as it travels between networks, and network address translation (NAT), which allows multiple devices to share a single public IP address.
Overall, routers play an important role in ensuring the security and availability of computer networks, and are a key component of any organization’s cybersecurity strategy.