Following is from the user manual for an old Netgear, but the interface is probably similar:
You should also disable remote login/management unless you really need to use that and use at least WPA-PSK encryption on the Wi-Fi with a strong passphrase (see Wayne's post).
Quote:
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The default password for the router’s Web Configuration Manager is password. NETGEAR recommends that you change this password to a more secure password. From the Main Menu of the browser interface, under the Maintenance heading, select Set Password to bring up the menu shown below. |