To improve your router's security, it is important to tweak default settings and ensure the router is configured properly. The router acts as the gatekeeper between network traffic and the internet, making it crucial to keep it secure. The process begins by logging into the router using its IP address, often 192.168.1.1 or 192.168.0.1, which can be found using the command prompt on Windows or by checking the network settings on a Mac. The admin credentials are different from the Wi-Fi login details and may be found on a sticker on the router. Changing the default credentials is a critical step, as many routers come with standard default logins. Even though some manufacturers now use random default passwords, it is still advisable to change the login credentials, along with the network name (SSID) and password. The SSID should not be the router's model name, as it can provide attackers with information about potential weaknesses. On an ASUS router, the admin login settings are located under Administration > System, and the wireless options are under Wireless > General. The password is referred to as WPA Pre-Shared Key, and the network security should be set to the strongest standard available, which is currently WPA3-Personal. However, some devices may not support WPA3, so using a mixed WPA2/WPA3 Personal mode may be necessary. Creating a guest network is another security measure, as it isolates devices from the main network. Guest networks can be configured to limit bandwidth, restrict access times, or provide one-time access. They also allow for a separate password that is easier to remember while keeping the primary network password more complex. Some routers, like ASUS, allow for multiple guest networks with different security protocols. Disabling WPS (Wi-Fi Protected Setup) is recommended, as it can reduce the security of the router. WPS offers two methods: a PIN and a button. The PIN method is vulnerable because it uses two four-digit numbers instead of an eight-digit number, making it easier to crack. The button method requires physical access, but modern versions of Android and iOS do not support it. WPS is rarely necessary, and alternatives like QR code sharing on iOS and Android can be used to connect devices without entering a password. Remote management features should be turned off to reduce the attack surface. On an ASUS router, these settings are under Administration > System, and options like Enable Telnet, Enable SSH, and Enable Web Access from WAN should be set to No. For secure remote access, features like Enable Access Restrictions and ASUS's Instant Guard VPN can be used. Instant Guard creates a VPN tunnel between the home network and devices with the Instant Guard app installed. Keeping the router updated is essential for security. Restarting the router periodically can help maintain performance and security. Installing the latest firmware updates is crucial to protect against known exploits. On ASUS routers, this is done under Administration > Firmware Upgrade. If automatic updates are not available, manual updates from the manufacturer should be installed. For routers that have reached their end of life, alternative firmware like DD-WRT or FreshTomato can be installed. If using an ISP-provided router, upgrading to a personal router may offer more control over security settings.