OpenDNS affecting both routers in router-behind-router configuration
I've configured an Asus router with OpenDNS behind my U-verse Motorola NVG589. Both wireless radios are working and can access the Internet just fine, but I was surprised to find that the OpenDNS parental controls are in effect on BOTH networks, even though I only pointed the second (Asus) router to the OpenDNS DNS server. I'm using the "Enable Dynamic IP Update" feature and wondered if that had changed a setting somehow such that the U-verse residential gateway also linked to OpenDNS? Other ideas? My goal was to have the Asus wireless router with the parental controls for my kids, but the U-verse RG be open to all sites for my wife and me. I could have sworn that during the first couple days when i set this up that both routers behaved differently, in the way I intended (Asus = OpenDNS, Motorola = U-verse DNS).
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I'm assuming you are using the free OpenDNS service.
Are both routers pointed to OpenDNS, i.e. their DNS servers are pointed to the OpenDNS servers, and DHCP is either pointing to the router or sending OpenDNS addresses. This version of OpenDNS is based on registering an IP address to your settings, and everything accessing OpenDNS from that IP address will receive the OpenDNS settings you've configured.
If you want different DNS settings for each network, one of them will have to point to a different set of DNS servers than OpenDNS.
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"I'm using the "Enable Dynamic IP Update" feature and wondered if that had changed a setting somehow such that the U-verse residential gateway also linked to OpenDNS?"
No, this setting is irrelevant for using a specific recursive DNS service. This is to keep a dynamic DNS hostname updated with your IP address information.
Is your NVG589 configured to work in bridged mode or in NAT mode? Is its DHCP server enabled, and if so, what DNS server address(es) are propagated by DHCP? Did you ensure that the devices supposed to connect to it are really connected to it and not to the Asus router? Check the status pages to verify that no OpenDNS resolver addresses are being used.
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Yes, free OpenDNS. That's what baffles me...I'm not able to modify the Uverse router's DNS settings. They are:
Primary DNS 68.94.156.8 Secondary DNS 68.94.157.8 The U-verse router allocation mode is set to "Passthrough" and passthrough mode as "DHCPS-fixed", with the fixed MAC address being my Asus router.
I'm not sure about NAT, but here's what the Firewall Status page gives me
Firewall Status
Packet Filter Off IP Passthrough On NAT Default Server Off Firewall Advanced On Regarding devices, I'm on a Mac-book and have connected to the NVG router, but I do also go onto the Asus wireless periodically, e.g. to print.
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Presumably the U-Verse router is also acting as your modem with the ASUS router connected behind that. Although you can't modify the DNS settings for that router, what DNS settings is it handing out via DHCP? My suspicions is that it's handing out the OpenDNS addresses which means that every device getting it's settings from the U-Verse routing will also be using your OpenDNS settings.
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Yes, it's also the modem. Your analysis was on track and led me to double-check my router configurations (good configuration link here: http://www.dslreports.com/faq/17734) and then the DNS network configurations on my Mac. By deleting the two OpenDNS servers in the configurations setting, the Mac has reverted to the standard DNS from the U-verse router to which it is connected.
Voila - problem solved.
Thanks for your help and patience...it must be challenging working with networking neophytes. Very arcane for the most of us. Again, thanks!
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