DNS conflicts with home hub and video on demand etc.
I have a Home Hub 2000 modem from Bell Fibe in Ontario. The modem runs both our TV and internet. When I set up OpenDNS, however, it creates a conflict that causes the modem to stop working with video on demand through the cable box.
My modem is currently set to obtain DNS information automatically. And that means OpenDNS is not functioning through the modem. However, when I set the modem to set DNS info manually, OpenDNS works browsing purposes but then the video on demand stops working. Any suggestions?
Could it be that your ISP uses private domain names for IPTV, not resolvable via public DNS services like OpenDNS, but only resolvable when using your ISP's DNS service?
Your other option may be to connect another router to the Home Hub where you configure OpenDNS and connect all end user devices. Just the IPTV remains connected to the Home Hub.
Thanks. I was able to get it working properly again and with Netflix/VOD working correctly too. Seems like it may have just needed a restart of the modem after setting the manual DNS addresses. Seemed to do the trick anyhow.
Had this problem going on for the last couple of weeks and finally figured it out.
I set my Bell Home Hub 3000 (HH3K) to use OpenDNS instead of Bell's DNS. Our Netflix stopped working, but I didn't put much thought in to it and figured it was an internet hiccup. After 2 weeks of the Mrs' complaining, I figured I should look in to it. Upon packet inspection, it turns out that the HH3K is connecting to something on Bell's internal network.
Hence when trying to access Netflix, I'd see a 403 (Forbidden) error.
When enabled, DNS responses containing IP addresses listed in RFC1918 will be filtered out. This helps to preventDNS Rebinding attacks. For example, ifbadstuff.attacker.com points to 192.168.1.1, this option would filter out that response.
That setting was conflicting with my Netflix/VOD. Once disabled, the HH3K restarted, and then each IP TV box restarted, Netflix/VOD works like a champ.
Hope that helps someone else and saves a marriage.
Thanks oct_al, your solution saved my marriage... lol... My IPTV's NetFlix, Crave, VOD , and the home phone all stopped working when I configured the HUB 3000 with OpenDNS. The disabling of the Security -> Block Internal IP Addresses feature as saved the day.