When I try to load the IP address on Safari or Firefox it doesn't work (192.168.1.1)

Question

It just says Failed to open page.  Where should I go from here?

Answer 1

Roundandpointy:
Unless you are inside your LAN, either wired or wireless, the address you entered will not work (as pointed out below) on any browser.  To access your router from outside your LAN, i.e. from the Internet, you have to go to the router's home page from inside your network, using the address you used, then click the 'status' tab and write down the IP Address.  Then, under the Administration-Management tab, enable HTTP access and enable Remote Management via HTTP from ANY IP address.  Save your settings.
Then, from outside your network, using MSIE, enter the IP address you wrote down like this: HTTP://xx.yy.zzz.vvv:8080 and you should get your login screen to your router. Be sure to add the port number 8080 appended to your IP address, presuming you did not change that port number.
Now, you wanted to use Safari; that won't work and Linksys is aware of this as of 2 weeks ago (for the EA4500 & EA3500 routers). Regrettably, this means a Mac or any iOS device cannot access the router and therefore not be able to access an attached external HDD behind the router.  Supposedly Linksys is working on this issue, since they were able to replicate it while I was on the phone with them, i.e. they could access my login page via MSIE but they could not do so from an iPad or a Mac running Safari. I guess we'll all just have to stay tuned.  I'm querying them every week or so and will post back here if they can make their equipment compatible with the millions of iOS/Safari devices out there.