Question

Users on a network are complaining that they cannot connect to a Webserver by its name in the Web browser. You can access the Webserver using its IP address. You discover an access list is blocking several UDP ports. Which port should you remove from the access list to allow users to connect to the Webserver?

443
530
22
53

Answer 1

53

Step-by-step explanation:

Port 53 is used by the DNS service.

DNS (Domain Name System) is a distributed and hierarchical database, which stores the necessary information for domain names. Its main uses are the assignment of domain names to IP addresses and the location of the corresponding email servers for each domain. The DNS was born from the need to provide people with access to the servers available through the Internet, allowing them to do it by a name, something easier to remember than an IP address.