what is domain port 53?
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Port 53 is used by the Domain Name System (DNS), a service that turns human readable names like AuditMyPc.com into IP addresses that the computer understands. Because port 53 is usually open, malicious programs may attempt to communicate on it.
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As you can see, port 21 is for client connecting to servers and port 20 is for servers connecting to clients, but those clients could still serve files on 21.
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1) Which one of the following uses UDP as the transport protocol? DNS primarily uses User Datagram Protocol (UDP) on port number 53 to serve requests. DNS queries consist of a single UDP request from the client followed by a single UDP reply from the server.
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On a Web server or Hypertext Transfer Protocol daemon, port 80 is the port that the server "listens to" or expects to receive from a Web client, assuming that the default was taken when the server was configured or set up. ... By default, the port number for a Web server is 80.
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the DNS search domain is what the DNS service will use to resolve hostnames that are not fully qualified. A fully qualified domain name is one that can be resolved by working down from the root domain (which is just an empty string) and eventually ending up with an IP address.
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To do this, open up VirtualBox, select the VM to be configured, click on Display | Remote Display. Make sure Enable Server is enabled and the Server port is set to 3389 (Figure A). If your network won't allow port 3389, you'll need to find a port that can be accessed over your internal network.
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Port 587 (submission) is used for secure connection (SMTP over STARTTLS). if you use port 587, your application must send STARTTLS command (after EHLO/HELO) to establish secure connection. If your application doesn't support this, use port 25 instead.
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['1 Install BIND. Install bind9 with apt. sudo apt-get install -y bind9.', '2 Configuration. Private network address is 192.168. 11.0/24. ... ', '3 Validation. named-checkconf validates /etc/bind/named. conf and included files. ... ', '4 Run BIND. Run BIND with systemd. ... ', '5 Excution result. Run nslookup on server.']
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It only means that there is no reverse DNS name for the DNS server IP address, which in most cases may not be a problem at all. To fix this you need to properly configure the reverse zone for the IP address of the DNS server, and make sure that the reverse zone is properly delegated to the server by your IP provider.
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Windows Domain Join is a feature that lets users establish a remote and secure connection to a work domain using credentials from the enterprise, allowing them to effectively "join" that domain.
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['Build the network topology.', 'Configure static IP addresses on the PCs and the server. Server. ... ', 'Configure DNS service on the generic server. To do this, click on the server, then Click on Services tab. ... ', 'Test domain name – IP resolution. Ping the hosts from one another using their names instead of their IP addresses.']
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The port numbers are divided into three ranges: the well-known ports, the registered ports, and the dynamic or private ports. The registered ports are those from 1024 through 49151. IANA maintains the official list of well-known and registered ranges. The dynamic or private ports are those from 49152 through 65535.
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[' open Windows defender.', ' go in advanced settings.', ' Create a new rule in inbound rules, select port and udp, type 5739 in the box and save it.', ' do the same in outbound rules.']
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The most commonly blocked ports are port 80 and port 25. Port 80 is the default port for http traffic. With blocked port 80 you will need to run your web server on a non-standard port. ... ISPs block this port to reduce the amount of spam generated by worms on infected machines within their network.
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['Log on to the domain controller on which the issue is occurring.', 'Click Start , point to Administrative Tools , and then click Services .', 'If the User Account Control dialog box appears, confirm that the action it displays is what you want, and then click Continue .']
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Log into the router and look for USSD, dial *136# and click send. It will tell you.
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If you hold Ctrl and right click the icon in the task bar then click connection status it shows you the exchange server your connected to as well as what domain controller you are connected to.