I have a dlink DIR 600L, and now I want to configure my router firewall to block outgoing packets to Google DNS Servers (8.8.8.8 and 8.8.4.4) for TCP/UDP and port 53 (DNS), this is so that I can use Chromecast to watch Netflix outside US.
You only need to put two rules on your router firewall to block outgoing packets to Google DNS Servers (8.8.8.8 and 8.8.4.4) for TCP/UDP and port 53 (DNS). This way, Chromecast will get a timeout trying to reach Google DNS Servers and will fallback to your router defined DNS servers and your Netflix or Hulu will work again!
In other words, this is what I aim to do:
What I need is a router capable of filtering outgoing connections, and
every router I have seen can do this as part of the built-in firewall
without need of flashing an alternate firmware that supports iptables
(such as openwrt).
Please note that I am not looking for solution such as routing the DNS request to a bogus gateway, that solution requires the knowledge of the IP address ( 192.168.x.x), which for the sake of this question, is unknowable.
Any idea how I can do this? If dlink router can't handle this, please suggest a consumer grade router( such as tp link, ASUS, Netgear etc, but no dd-wrt or tomato firmware router) that can do this. Please note that I am not looking at the iptables solution.
Resources:
- You can find a dlink emulator here. Username: Admin, password: blank
Best Answer
Not sure if you'll find a solution to do that on your consumer grade router. Essentially you need a server to sit in the middle of your connection, or proxy to sit in the middle and intercept all traffic going to the Google DNS servers and rebuild the packets to redirect to an alternate destination.
I'm sure you looked into the windows HOSTS file, and realized that it will only supersede DNS requests, which is not going to help you here.
Looks like you'll need to sit a Linux or Server 2003+ machine between your server and the router. Take a look at IPv4 to IPv4 Interface PortProxying.
http://technet.microsoft.com/en-us/library/cc731068%28v=ws.10%29.aspx