Category Archives: Networks

The importance of using stateful firewall rules on port 53 (DNS)

Posted on 11/06/2014 by ibird

Scenario A firewall appliance forwards DNS traffic to the outside world. The traffic generated is e.g. for Server 2008 as per here in Technet, i.e. Traffic Type Source of Transmission Source Port Destination of Transmission Destination Port Queries from local … Continue reading →

Posted in DNS, Exploits, Linux, Microsoft, Networks, PCI, Vulnerabilities | Comments Off on The importance of using stateful firewall rules on port 53 (DNS)

Getting ready for IPv6

Posted on 13/07/2012 by ibird

I want to make sure the Slackware Linux edge servers are ready for IPv6 when eventually the ISPs catch up. We signed up for a free tunnel endpoint with http://www.gogo6.com/freenet6/tunnelbroker/ to try a few things out. Building the gogoc client … Continue reading →

Posted in IPv6, Linux, Networks | Comments Off on Getting ready for IPv6