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I know this doesn't directly answer your question, but the E4200 is really a consumer focused router, a pretty good consumer router, but still it isn't really designed for enterprise. You might find life easier if you can upgrade from the E4200. If you are stuck with the E4200, one thing to keep in mind is that you can't really manage all the settings unless you use Cisco's "Cloud Connect", so you are working with one hand tied behind your back if you are using the included desktop app for config. Anyway, this may be helpful if you are looking at connecting to a different router: http://www6.nohold.net/Cisco2/ukp.aspx?pid=96&vw=1&articleid=4117