Port no: 52 is used by Domain Names System (DNS).

DNS uses TCP when the size of the request or the response is greater than a single packet such as with responses that have many records or many IPv6 responses or most DNSSEC responses. The maximum size was originally 512 bytes but there is an extension to the DNS protocol that allows clients to indicate that they can handle UDP responses of up Why DNS Works On Both TCP and UDP - TechGenix Oct 31, 2009 Container networking | Docker Documentation Container networking Estimated reading time: 4 minutes The type of network a container uses, whether it is a bridge, an overlay, a macvlan network, or a custom network plugin, is transparent from within the container.From the container’s point of view, it has a network interface with an IP address, a gateway, a routing table, DNS services, and other networking details (assuming the container CCNA - TCP/UDP Port Numbers Flashcards | Quizlet

Yes, using the DNS-01 or TLS-ALPN-01 challenge. However, Certbot does not include support for TLS-ALPN-01 yet. If you’re using any Certbot with any method other than DNS authentication, your web server must listen on port 80, or at least be capable of doing so temporarily during certificate validation.

windows server 2008 - DNS.EXE allocates 5000+ ports

Hybrid Identity required ports and protocols - Azure

Which TCP ports does a workstation use to authenticate to May 31, 2011 How to set up AdGuard DNS When you use AdGuard DNS, every time a browser or an app sends a "bad" request, our server does not reply with an IP address, but sends back a null response instead. AdGuard has a database of domain names that serve for ad, tracking and fraud purposes, and this database is regularly updated. Changing your DNS settings to point to a different IP Your DNS settings provide the link between your custom domain name and the IP address of the network where Wild Apricot is hosting your site. When you set up a custom domain, or when Wild Apricot changes its IP address, you'll need to get your DNS settings updated …