Updating firmware on linksys router
Don't update your firmware unless you think it is necessary.A firmware update can be somewhat dangerous if you don't take the right precautions.During this process, you will be asked if you want to keep your current configurations.After the upgrade is complete, you will need to sign in again.
"They should either turn off remote admin functionality, or restrict it to IP addresses from which they need to access the router if they can," Ullrich said.
This is somewhat permanent in that it can't be changed until a new firmware update replaces it.
It also can't be removed like you can with software.
Owners and administrators of Linksys home routers are being advised to update and secure their devices following reports of active attacks on a flaw present in at least two models.
Researchers with the SANS Institutes Internet Storm Center have received reports of mass attacks on a remote access vulnerability in the Linksys E1000 and E1200.
(Id you have not changed your password from default and can't access 192.168.1.1, please see this FAQ: »Linksys FAQ »What's the default username and password? Note which wires are connecting where on the router.