This article explains what the default login credentials are for the Linksys WRT120N router. It also describes how to reset the router if the default password does not work.
How to Factory Reset a Linksys Router
Like most Linksys routers, the default password for the Linksys WRT120N is admin and is case-sensitive. While some routers require a default username to be entered along with the password, this router's username field can be left blank; only the password is required.
The default gateway is the IP address that devices connected to the network use to access the router and the Internet. The default IP address for the WRT120N router is 192.168.1.1. You can enter this as a URL in a web browser to access the router settings.
Although the default password for the WRT120N works directly with the router, this default information can be changed through the router settings. This may be the reason why you are unable to access the router. If you are unable to log in to the Linksys WRT120N using the default credentials, reset the router to reapply the default settings and restore the default password.
