Recently my MN-500 has been dropping its connection to the internet every
couple of hours. When this happens, I either unplug then re-plug the base
station; or I will use the base station management tool to reset the base.
I've had the router for several years now without any problems.

I've changed the lease time from 2hrs to 2weeks.

In addition, when I look at the base station log file there are hundreds of
entries like these...

2006/11/12 20:03:37 Connection attempt to base station from WAN blocked --

Could this be related?

Thanks and regards