Category Archives: Vulnerabilities

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

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)