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I've set up a home server to work as a router/NAT. This is done with IPtables forwarding rule.

Now I'd like to block certain websites, like facebook. I thought I could just add 127.0.0.1 facebook.com to /etc/hosts on the server, but the client (my) computer could still access/ping the domain.

I'm also running bind, maybe it could be done with that? Thanks for you help.

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closed as off-topic by Falcon Momot, Ward, MDMarra, Bryan, Scott Pack Jul 6 '13 at 13:00

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And if anyone is curious, I'd like to block facebook to stop me from checking it all the time :( –  Znarkus Jun 8 '11 at 13:59

1 Answer 1

up vote 1 down vote accepted

(Assuming bind is the DNS server on the router, and that your computer is using said router for DNS resolution. Edit: If your computer is using your ISPs DNS servers directly, this won't work at all. Skip to the iptables section.)

Bind isn't going to use the local server's /etc/hosts to find out what facebook is. If you want to break facebook you'd need to tell bind that it's authoritative for the facebook.com domain, and set up a zonefile with 127.0.0.1 (for example) as the A record for facebook.com and www.facebook.com.

A simpler approach might be to add iptables rules for the IPs used by facebook.

iptables -I FORWARD -s <computer IP> -d 69.63.189.11 -p tcp -j REJECT
iptables -I FORWARD -s <computer IP> -d 69.63.189.16 -p tcp -j REJECT
iptables -I FORWARD -s <computer IP> -d 69.63.181.12 -p tcp -j REJECT

That or self-control :-P.

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I vote for self-control. –  wolfgangsz Jun 8 '11 at 14:14

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