You don't. Lock it down as best you can: http://www.tomsguide.com/us/home-router-security,news-19245.html http://www.tomsguide.com/us/home-router-security,news

You don't. Lock it down as best you can: http://www.tomsguide.com/us/home-router-security,news-19245.html http://www.tomsguide.com/us/home-router-security,news-19245.... But as for the software being immune to vulnerabilities - no chance. Read http://www.devttys0.com/2015/04/hacking-the-d-link-dir-890l/ http://www.devttys0.com/2015/04/hacking-the-d-link-dir-890l/ which lists huge security issues and then D-LINK putting out a patch which doesn't even fix what they said it did.