Restart the DNS Server service: net stop dns && net start dns Be aware that setting the value too low, effectively defeats the purpose of MS08-037 If you're on Windows Server 2008 R2 and just want to make sure that a number of individual UDP endpoints are not used by DNS, you can also specify a list of port ranges to be excluded from use by DNS:
Mar 26, 2020 Pi-hole as All-Around DNS Solution - Pi-hole documentation Apr 19, 2020 The collection of host-name-to-IP-address mappings contained with the DNS database is also known as a namespace. Essentially, when looking for a name in DNS, the DNS client first checks a top-level DNS server database. That server tells the client which DNS server hosts the next part of the DNS name, and the client then queries that server. Security practitioners for decades have advised people to limit DNS queries against their DNS servers to only use UDP port 53. The reality is that DNS queries can also use TCP port 53 if UDP port
DNS Port - How to allow DNS through Firewall
Jun 27, 2013 DNS UDP Ports - social.technet.microsoft®.com
Multicast DNS - Wikipedia
Jul 09, 2009 What port does DNS use - Answers Port no: 52 is used by Domain Names System (DNS). Specifying Port Settings for DNS When requesting zone transfers from the primary server, some secondary DNS servers use the source port number (the primary server used to send the notify message) as the destination port number in the zone transfer request. If the primary server uses a random source port number when sending the noti