So this month I forgot to pay my ISP. Normally they pop up a nag screen when that happens, and I pay the bill online. This month something different happened.
I got a message that I needed to go to a “network login page” when I tried to open Firefox. I’ve seen this message on my laptop when I have to login to a captive wifi portal. So far this is no surprise.
What was a surprise was that I couldn’t access any web resource on my local network. Not my router, nor my VMWare server. Even manually typing in the IP address redirected me to my ISP’s “web portal” login.
I paid the bill and now the problem is gone. But it concerns me that my ISP can restrict access on my internal LAN. How is this accomplished and how can I prevent them from doing this again?
I have a Netgear AC1450 wifi router that’s been flashed with DD-WRT.