Firewall rule to block DNS requests by domain ?
Posted: Thu Oct 09, 2014 4:03 pm
I'm getting flooded with DNS request for several domains that I no longer host. The domain owner has not updated the DNS servers at his registrar.
I'd like to filter any request for these domains at the firewall. If a specific rule for blocking DNS traffic exists that would be great.
Can this be done with the ASL 3.2.18 firewall ?
Something like this?:
iptables -A INPUT -m string --algo bm --string "baddomain1.com" -j DROP
I'd like to filter any request for these domains at the firewall. If a specific rule for blocking DNS traffic exists that would be great.
Can this be done with the ASL 3.2.18 firewall ?
Something like this?:
iptables -A INPUT -m string --algo bm --string "baddomain1.com" -j DROP