ip6tables: IPv6 Firewall For Linux

Posted on in Categories , , , , , , , , , , , last updated July 27, 2010

Q. IPv4 by default protect internal host using RFC 1918 private IP address. But IPv6 offers direct global address which result into exposing all internal hosts as well. How do I create default IPv6 firewall to drop all incoming (except ping6 request) connection and only allow outgoing requests from Linux workstation?

dnstop: Monitor BIND DNS Server (DNS Network Traffic) From a Shell Prompt

Posted on in Categories , , , , , , , , , , last updated January 8, 2009

Q. How do I monitor my Bind 9 named (or any other dns server) server traffic / network traffic under Linux? How do I find out and view current DNS queries such as A, MX, PTR and so on in real time? How do I find out who is querying my DNS server or specific domain or specific dns client IP address?