Linux - NetworkingThis forum is for any issue related to networks or networking.
Routing, network cards, OSI, etc. Anything is fair game.
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this is not a firewalls job. It will deal with IP addressing, and NOT domain names. Not surprising you didn't find anything.
Whilst it is occasionally possible to have firewalling systems that can utilize some elements of DNS, it is not viable to rely on DNS lookups to permit firewall connections as the overhead and latency is vast, and the reliability is poor.
Last edited by acid_kewpie; 06-13-2011 at 06:11 AM.
OK let me explain, As I told before my linux server contains 2 interface cards eth0 for WAN and eth1 is LAN(10.10.0.0/24), dhcp server is enabled on eth1 interface. Now situation is I want configure the linux server such way that any node inside LAN (for example 10.10.10.254) can only access XXX.subdomain.com. if it want to access say for example www.google.com it will be rejected.
A proxy is the best way for sure.
If you don't care about using the server for other outgoing traffic and "XXX.subdomain.com" has a fixed IP address range (for example "220.127.116.11/24"), you could restrict the traffic with an OUTPUT rule:
iptables -A OUTPUT -o eth0 ! -d 18.104.22.168/24 -j REJECT