What could re-enable uPnP on router apart from malware?



  • I'm the sole person who has access to this router. I turned uPnP off and have twice found it turned back on in recent weeks. The Router is Asus DSL-AC68U.

    I have a VPN running at the router level, installed about a month ago. I've recently updated the firmware on it too but after extensive searching neither of those should have affected it. The only thing I've come across is that there must be malware inside the network.

    Can someone please advise?



  • Buggy firmware.

    There's an old saying in IT:

    Never attribute to malice what can be sufficiently explained by incompetence.

    This can be fully explained by a buggy firmware that somehow re-enables it automatically after reboot, or never disables it in the first place, or resets that part of the configuration due to some other random event.

    Consumer router/AP firmware is well known for being old version, riddled with bugs. The selling points of these devices is not security, it's whatever superlatives about speed they can stick on the box it comes with. The firmware and lack of security is only evident after you've bought it.



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