Hyperslug's right, "Remote Access" here only covers the WAN side of the router. Anything LAN or WLAN is "local access".
There is a separate option to cut off wireless access to the router's config. According to the same page of the User Guide (p.19) that hyperslug posted, on the Administration > Management config page, these two options can secure the local wireless access to the router config:
Access Server HTTP (HyperText Transport Protocol) is
the communications protocol used to connect to servers
on the World Wide Web. HTTPS uses SSL (Secured Socket
Layer) to encrypt data transmitted for higher security.
Select HTTP or HTTPS. The default selection is HTTP.
Wireless Access Web If you are using the Router in
a public domain where you are giving wireless access
to your guests, you can disable wireless access to the
Router’s web-based utility. You will only be able to access
the web-based utility via a wired connection if you disable
the setting. Keep the default, Enable, to enable wireless
access to the Router’s web-based utility, or select Disable
to disable wireless access to the utility.
If wireless access to your router's administration pages is a concern for you, you should change the first option to HTTPS (encrypt local access, for protected wireless access -- note this is not the same as the "Use https" option in the Remote Management section), or switch the second option to Disable (for no wireless access at all).