A router directs traffic between different networks, such as your LAN and the internet.
Why it matters:
- Every business and home uses a router to get online.
- Routers often include firewalls, Wi-Fi, and DHCP services built in.
- Configuring them properly is critical to security.
Pro tip: Change the default admin password on routers — leaving it at “admin” is one of the biggest security risks.
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