Is a router a firewall?
Yes, the rumors are true: wireless routers automatically perform basic
firewall operations.
Firewalls are designed to block any external Internet traffic that
attempts to access the internal network (for example, the system of devices
connected to the router). This is a common tactic used by hackers; once they
have access to your network, they can steal sensitive data (such as employee
records and customer payment information) and control devices such as wireless
security cameras.
Routers help prevent this infiltration because they are designed to
handle requests for external traffic. If the router receives an incoming
traffic request that is not initiated by a device on the network, the router
will automatically remove it. This prevents anyone outside your network from
accessing your devices, so you can get integrated protection from entry-level
cyber attacks.
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