title
Introduction to Using DNS Server on Windows Server 2012

description
Info Level: Intermediate Presenter: Eli the Computer Guy Date Created: March 20, 2013 Length of Class: 18:48 Tracks Windows Server 2012 Prerequisites Building Your Own Network for a Computer Lab Introduction to Windows Server 2012 Installing Windows Server 2012 Navigation in Windows Server 2012 Introduction to Active Directory Directory Services Structure in Windows Server 2012 Introduction to Active Directory Infrastructure in Windows Server 2012 Basic DHCP Setup on Windows Server 2012 Introduction to DNS (Domain Name Services) Purpose of Class This class gives an overview of the basic usage of DNS Server on a Windows 2012 Server. Class Notes Logs Show Events that may be important if your DNS Server is having issues Clear Cache -- Clears the local DNS cache of the server and may need to be done if you make changes to DNS, but they do not seem to be working Restart Service Scavenge Stale Resource Records -- Can be used to clean up old/ bad records in DNS You can create a Record Manually by selecting "New Host (A or AAAA)" after Right Clicking your Domain. Resources

detail
{'title': 'Introduction to Using DNS Server on Windows Server 2012', 'heatmap': [{'end': 984.104, 'start': 936.251, 'weight': 0.979}], 'summary': 'Tutorial covers dns and domain controller management on windows server 2012, including domain name to ip address mapping, dns scavenging, cache clearing, and troubleshooting, providing insights into dns server usage and maintenance.', 'chapters': [{'end': 492.442, 'segs': [{'end': 57.891, 'src': 'embed', 'start': 28.158, 'weight': 2, 'content': [{'end': 35.881, 'text': "this is an introduction class and it's only for using DNS Server within the Windows Server 2012 environment.", 'start': 28.158, 'duration': 7.723}, {'end': 41.464, 'text': 'We are not going to go over a lot about Windows DNS Server today.', 'start': 36.182, 'duration': 5.282}, {'end': 55.95, 'text': "Basically, I've been trying to walk you along in these classes so you can very slowly and comfortably build your own Active Directory Windows 2012 servers.", 'start': 41.904, 'duration': 14.046}, {'end': 57.891, 'text': 'now we have gotten to the point.', 'start': 55.95, 'duration': 1.941}], 'summary': 'Introduction to dns server in windows server 2012 for building active directory servers.', 'duration': 29.733, 'max_score': 28.158, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/6c3mwjjr3AQ/pics/6c3mwjjr3AQ28158.jpg'}, {'end': 110.834, 'src': 'embed', 'start': 81.136, 'weight': 0, 'content': [{'end': 94.506, 'text': 'And the issue is that a lot of the ways that classes teach DNS Microsoft Windows DNS they try to give you too much information at the exact same time.', 'start': 81.136, 'duration': 13.37}, {'end': 102.872, 'text': "They try to give you too much high level information that you don't understand and then that kind of confuses everything for you.", 'start': 94.546, 'duration': 8.326}, {'end': 110.834, 'text': 'So DNS is a vital infrastructure component to a Windows Server architecture.', 'start': 103.232, 'duration': 7.602}], 'summary': 'Windows dns classes overwhelm with too much high-level information, hindering understanding. dns is vital to windows server architecture.', 'duration': 29.698, 'max_score': 81.136, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/6c3mwjjr3AQ/pics/6c3mwjjr3AQ81136.jpg'}, {'end': 164.932, 'src': 'embed', 'start': 137.227, 'weight': 1, 'content': [{'end': 146.374, 'text': 'the basic dns concepts that you need to understand to get a basic dns server up and running, um, are pretty simple.', 'start': 137.227, 'duration': 9.147}, {'end': 148.316, 'text': "you don't need a lot of information.", 'start': 146.374, 'duration': 1.942}, {'end': 156.145, 'text': "but if you're going to go into the enterprise environment, where you have numerous DNS servers running, where you have security concerns,", 'start': 148.316, 'duration': 7.829}, {'end': 164.932, 'text': 'when you have offices throughout the world, the DNS configurations for doing that can get very complicated, very quick.', 'start': 156.55, 'duration': 8.382}], 'summary': 'Basic dns concepts are simple, but enterprise environments with numerous servers and global offices can lead to complex configurations.', 'duration': 27.705, 'max_score': 137.227, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/6c3mwjjr3AQ/pics/6c3mwjjr3AQ137227.jpg'}, {'end': 302.593, 'src': 'embed', 'start': 271.655, 'weight': 6, 'content': [{'end': 273.917, 'text': 'yep, it all seems to be working.', 'start': 271.655, 'duration': 2.262}, {'end': 276.752, 'text': "That's what we're going to be trying to do here today.", 'start': 275.11, 'duration': 1.642}, {'end': 280.555, 'text': "So basically what I'm going to show you is I'm going to show you the log files.", 'start': 277.192, 'duration': 3.363}, {'end': 288.642, 'text': "I'm going to show you a little bit of maintenance, just so you know how it works, about how to clear the DNS cache, how to restart the DNS service,", 'start': 280.575, 'duration': 8.067}, {'end': 291.804, 'text': 'how to scavenge the database if you need to clean it up.', 'start': 288.642, 'duration': 3.162}, {'end': 302.593, 'text': "And then I'm also going to show you how to manually add a hostname to IP address record in the DNS in case you need it,", 'start': 292.205, 'duration': 10.388}], 'summary': 'Demonstration of dns maintenance including log files, cache clearing, service restart, database scavenging, and manual hostname to ip address addition.', 'duration': 30.938, 'max_score': 271.655, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/6c3mwjjr3AQ/pics/6c3mwjjr3AQ271655.jpg'}, {'end': 434.276, 'src': 'embed', 'start': 402.342, 'weight': 7, 'content': [{'end': 407.085, 'text': "so it's very again where I talk about user interface issues with Microsoft.", 'start': 402.342, 'duration': 4.743}, {'end': 407.885, 'text': 'this is kind of weird.', 'start': 407.085, 'duration': 0.8}, {'end': 411.247, 'text': 'you would think if you clicked on this you would get some, some type of control panel.', 'start': 407.885, 'duration': 3.362}, {'end': 411.747, 'text': "you don't.", 'start': 411.247, 'duration': 0.5}, {'end': 414.688, 'text': "basically, all you're getting is the log file.", 'start': 411.747, 'duration': 2.941}, {'end': 419.351, 'text': "so down at the bottom, it would show you events if you had any, but you don't have any.", 'start': 414.688, 'duration': 4.663}, {'end': 426.893, 'text': 'So, if we are going to be administrating the DNS server on this server, what we need to do is we need to go up to Tools.', 'start': 419.451, 'duration': 7.442}, {'end': 434.276, 'text': 'we click on Tools and then this gives us all the tools for the services that are installed on the server.', 'start': 426.893, 'duration': 7.383}], 'summary': 'Discussion about user interface issues with microsoft, accessing tools for services on the server.', 'duration': 31.934, 'max_score': 402.342, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/6c3mwjjr3AQ/pics/6c3mwjjr3AQ402342.jpg'}, {'end': 470.195, 'src': 'embed', 'start': 445.32, 'weight': 5, 'content': [{'end': 451.884, 'text': 'So, when this opens up, we get a nice MMC control panel, the Microsoft Management Console control panel,', 'start': 445.32, 'duration': 6.564}, {'end': 456.006, 'text': "just like we will for just about anything that we're going to be doing.", 'start': 451.884, 'duration': 4.122}, {'end': 461.25, 'text': "We can see that we're in DNS, and then under it, we can see our server name.", 'start': 456.407, 'duration': 4.843}, {'end': 468.834, 'text': 'So the reason this is called server right here is because, in fact, I named this server server.', 'start': 461.55, 'duration': 7.284}, {'end': 470.195, 'text': "So that's why this is called server.", 'start': 468.874, 'duration': 1.321}], 'summary': "The mmc control panel opens up, displaying dns and the server name, which is named 'server'.", 'duration': 24.875, 'max_score': 445.32, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/6c3mwjjr3AQ/pics/6c3mwjjr3AQ445320.jpg'}], 'start': 4.77, 'title': 'Dns and domain controller in windows server 2012', 'summary': 'Introduces dns concepts and management on windows server 2012, covering domain name to ip address mapping, log files, and manual hostname to ip address record addition. it also explains the process of creating a domain controller in active directory, including steps to access server manager, interact with the dns server, and deal with microsoft management console control panel.', 'chapters': [{'end': 337.985, 'start': 4.77, 'title': 'Introduction to dns on windows server 2012', 'summary': 'Covers the basic concepts of dns, emphasizing the mapping of domain names to ip addresses, and provides practical guidance for managing dns, including log files, maintenance, and manual addition of hostname to ip address records in windows server 2012.', 'duration': 333.215, 'highlights': ['The DNS server maps domain names to IP addresses, a vital function for Windows Server architecture and TCP/IP networking.', 'The class focuses on basic DNS concepts, such as log file management, DNS cache clearing, service restarting, database scavenging, and manual addition of hostname to IP address records.', 'The class emphasizes the importance of understanding basic DNS concepts before delving into more complex enterprise-level DNS configurations.', 'The instructor aims to help students comfortably navigate the DNS control panel and verify its functionality for Windows Server 2012.', 'The instructor stresses the need to gradually build understanding of DNS before addressing advanced topics like sites, replication, and security concerns in enterprise environments.']}, {'end': 492.442, 'start': 337.985, 'title': 'Creating domain controller in active directory', 'summary': 'Demonstrates the process of creating a domain controller in an active directory system using windows server 2012, including the steps to access server manager, check installed services like dns and dhcp, and interact with the dns server. it also highlights the user interface issues with microsoft and the use of microsoft management console control panel.', 'duration': 154.457, 'highlights': ['The chapter demonstrates the process of creating a domain controller in an Active Directory system using Windows Server 2012, including the steps to access Server Manager, check installed services like DNS and DHCP, and interact with the DNS server.', 'It also highlights the user interface issues with Microsoft, where accessing the DNS button in the Server Manager does not provide expected control panel access, only displaying the log file.', 'The use of Microsoft Management Console control panel for interacting with the DNS server is emphasized, showing the server name and options available upon right-clicking the server icon.']}], 'duration': 487.672, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/6c3mwjjr3AQ/pics/6c3mwjjr3AQ4770.jpg', 'highlights': ['The DNS server maps domain names to IP addresses, a vital function for Windows Server architecture and TCP/IP networking.', 'The class emphasizes the importance of understanding basic DNS concepts before delving into more complex enterprise-level DNS configurations.', 'The instructor aims to help students comfortably navigate the DNS control panel and verify its functionality for Windows Server 2012.', 'The instructor stresses the need to gradually build understanding of DNS before addressing advanced topics like sites, replication, and security concerns in enterprise environments.', 'The chapter demonstrates the process of creating a domain controller in an Active Directory system using Windows Server 2012, including the steps to access Server Manager, check installed services like DNS and DHCP, and interact with the DNS server.', 'The use of Microsoft Management Console control panel for interacting with the DNS server is emphasized, showing the server name and options available upon right-clicking the server icon.', 'The class focuses on basic DNS concepts, such as log file management, DNS cache clearing, service restarting, database scavenging, and manual addition of hostname to IP address records.', 'It also highlights the user interface issues with Microsoft, where accessing the DNS button in the Server Manager does not provide expected control panel access, only displaying the log file.']}, {'end': 723.247, 'segs': [{'end': 573.68, 'src': 'embed', 'start': 541.742, 'weight': 0, 'content': [{'end': 543.463, 'text': 'things start getting messed up.', 'start': 541.742, 'duration': 1.721}, {'end': 547.865, 'text': 'So names start getting mapped to addresses that no longer exist.', 'start': 543.803, 'duration': 4.062}, {'end': 550.467, 'text': "Names that shouldn't be there are still there.", 'start': 548.286, 'duration': 2.181}, {'end': 553.409, 'text': 'Basically, you just get blow on your DNS table.', 'start': 550.547, 'duration': 2.862}, {'end': 557.254, 'text': 'If you click this scavenge stale resource records.', 'start': 553.949, 'duration': 3.305}, {'end': 565.406, 'text': "what this will do is it will go through and it will try to clean up all of those bad old records for you so that you won't have any problems.", 'start': 557.254, 'duration': 8.152}, {'end': 573.68, 'text': "So again, I'm not really sure how hard you would have to hammer the server to actually really need to do this, but it is possible for you guys.", 'start': 565.826, 'duration': 7.854}], 'summary': 'Dns table gets cluttered with invalid addresses. scavenging cleans up old records.', 'duration': 31.938, 'max_score': 541.742, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/6c3mwjjr3AQ/pics/6c3mwjjr3AQ541742.jpg'}, {'end': 609.179, 'src': 'embed', 'start': 589.012, 'weight': 5, 'content': [{'end': 599.29, 'text': "Now, if you have multiple DNS servers and they're all talking to each other, then the DNS servers may store information, DNS records, in cache.", 'start': 589.012, 'duration': 10.278}, {'end': 609.179, 'text': 'So, instead of having to ask a higher level DNS server for information every single time this server needs it, it will ask for it once.', 'start': 599.61, 'duration': 9.569}], 'summary': 'Multiple dns servers can store dns records in cache, reducing the need for repeated requests.', 'duration': 20.167, 'max_score': 589.012, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/6c3mwjjr3AQ/pics/6c3mwjjr3AQ589012.jpg'}, {'end': 647.285, 'src': 'embed', 'start': 624.433, 'weight': 2, 'content': [{'end': 632.837, 'text': "Well, especially if you're in a lab environment and you're changing a lot of things, there are many times information in that cache will be outdated.", 'start': 624.433, 'duration': 8.404}, {'end': 637.36, 'text': 'And so your DNS server will be giving bad information to the local computers.', 'start': 633.278, 'duration': 4.082}, {'end': 642.983, 'text': "So if you're making big changes, I would say every once in a while, go in here and do this clear cache.", 'start': 637.56, 'duration': 5.423}, {'end': 647.285, 'text': "to make sure this hasn't cached information that is now bad.", 'start': 643.323, 'duration': 3.962}], 'summary': 'Regularly clear cache in lab environment to avoid outdated data and bad dns information.', 'duration': 22.852, 'max_score': 624.433, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/6c3mwjjr3AQ/pics/6c3mwjjr3AQ624433.jpg'}, {'end': 690.438, 'src': 'embed', 'start': 662.393, 'weight': 3, 'content': [{'end': 672.523, 'text': 'So we go down to All Tasks, we can go and we can see that we have the ability to start, stop, pause, or restart the DNS service.', 'start': 662.393, 'duration': 10.13}, {'end': 681.132, 'text': 'So remember, all these programs on a server are services, and sometimes you need to restart those services if you make any modifications to them.', 'start': 672.623, 'duration': 8.509}, {'end': 690.438, 'text': "You know when they say, when in doubt, reboot for a normal computer? Well, when in doubt and you're messing around with a server, restart.", 'start': 682.913, 'duration': 7.525}], 'summary': 'Restart server services as needed for modifications and troubleshooting.', 'duration': 28.045, 'max_score': 662.393, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/6c3mwjjr3AQ/pics/6c3mwjjr3AQ662393.jpg'}], 'start': 492.842, 'title': 'Dns server management', 'summary': 'Introduces dns scavenging options and discusses the importance of clearing cache in dns servers, the need to restart dns services after making modifications, and the potential consequences of outdated cached information, particularly in lab environments with frequent server changes.', 'chapters': [{'end': 565.406, 'start': 492.842, 'title': 'Dns scavenging options', 'summary': 'Introduces dns scavenging options, highlighting the importance of scavenged stale resource records in cleaning up outdated dns records to prevent issues, particularly in lab environments with frequent server changes.', 'duration': 72.564, 'highlights': ['Implementing scavenged stale resource records helps in cleaning up outdated DNS records after frequent server changes, preventing issues such as names being mapped to non-existent addresses.', 'It is emphasized that this tool may not be needed frequently, even in enterprise environments, but it is crucial for maintaining DNS integrity in lab environments with rapid server deployments and removals.', 'The process involves identifying and removing outdated records, preventing the accumulation of obsolete data that can cause disruptions in DNS functionality.']}, {'end': 723.247, 'start': 565.826, 'title': 'Managing dns servers and services', 'summary': 'Discusses the importance of clearing cache in dns servers, the need to restart dns services after making modifications, and the potential consequences of outdated cached information, especially in lab environments.', 'duration': 157.421, 'highlights': ['Clearing DNS cache is important, especially in lab environments, to avoid giving bad information to local computers.', 'Restarting DNS services after making modifications is crucial to ensure that all configurations have been picked up and no old configurations are being used.', 'The DNS servers store information in cache to avoid repeatedly asking higher level DNS servers for the same information, ultimately improving performance and efficiency.']}], 'duration': 230.405, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/6c3mwjjr3AQ/pics/6c3mwjjr3AQ492842.jpg', 'highlights': ['Implementing scavenged stale resource records helps in cleaning up outdated DNS records after frequent server changes, preventing issues such as names being mapped to non-existent addresses.', 'The process involves identifying and removing outdated records, preventing the accumulation of obsolete data that can cause disruptions in DNS functionality.', 'Clearing DNS cache is important, especially in lab environments, to avoid giving bad information to local computers.', 'Restarting DNS services after making modifications is crucial to ensure that all configurations have been picked up and no old configurations are being used.', 'It is emphasized that this tool may not be needed frequently, even in enterprise environments, but it is crucial for maintaining DNS integrity in lab environments with rapid server deployments and removals.', 'The DNS servers store information in cache to avoid repeatedly asking higher level DNS servers for the same information, ultimately improving performance and efficiency.']}, {'end': 1120.383, 'segs': [{'end': 761.892, 'src': 'embed', 'start': 723.649, 'weight': 0, 'content': [{'end': 728.99, 'text': "So here we've got the scavenged stale resource records, the clear cache, and we have the restart.", 'start': 723.649, 'duration': 5.341}, {'end': 732.571, 'text': 'These are all things that you may or may not need in the future.', 'start': 729.13, 'duration': 3.441}, {'end': 740.513, 'text': 'Now, after that, what we should go down to is we should go and we should look at the global logs, the DNS events.', 'start': 733.272, 'duration': 7.241}, {'end': 748.697, 'text': 'Again, this is not something you will go to a lot, but if you are having major errors with your DNS server, Event logs are always a good thing.', 'start': 741.034, 'duration': 7.663}, {'end': 750.519, 'text': 'This looks like just normal event viewer.', 'start': 748.757, 'duration': 1.762}, {'end': 753.362, 'text': 'I can click on whatever thing happened.', 'start': 750.659, 'duration': 2.703}, {'end': 756.205, 'text': 'If I double click, it will give me information.', 'start': 753.422, 'duration': 2.783}, {'end': 761.892, 'text': "So, basically, if you're having problems with your DNS server, you can come here and you can try to figure out.", 'start': 756.606, 'duration': 5.286}], 'summary': 'Tips for troubleshooting dns server issues including scavenging, cache clearing, and global log analysis.', 'duration': 38.243, 'max_score': 723.649, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/6c3mwjjr3AQ/pics/6c3mwjjr3AQ723649.jpg'}, {'end': 809.366, 'src': 'embed', 'start': 781.228, 'weight': 3, 'content': [{'end': 785.912, 'text': 'But today, all we are going to deal with is the forward lookup zones.', 'start': 781.228, 'duration': 4.684}, {'end': 791.316, 'text': 'So the forward lookup zone, this is what maps those domain names or host names to IP addresses.', 'start': 786.252, 'duration': 5.064}, {'end': 794.919, 'text': "We're going to skip over this first, what is called a zone.", 'start': 791.636, 'duration': 3.283}, {'end': 801.903, 'text': "We're going to skip over this This is kind of like a global thing for the entire Active Directory structure.", 'start': 794.939, 'duration': 6.964}, {'end': 804.924, 'text': "Basically, we're just not going to mess with it.", 'start': 803.183, 'duration': 1.741}, {'end': 809.366, 'text': "What we're going to do is we're going to go down to etcg.com.", 'start': 804.944, 'duration': 4.422}], 'summary': 'Focus on forward lookup zones mapping domain names to ip addresses.', 'duration': 28.138, 'max_score': 781.228, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/6c3mwjjr3AQ/pics/6c3mwjjr3AQ781228.jpg'}, {'end': 911.416, 'src': 'embed', 'start': 882.91, 'weight': 4, 'content': [{'end': 897.763, 'text': 'Now, as you get more and more and more and more computers on your network, this list of domain names or names to IP addresses will increase in size.', 'start': 882.91, 'duration': 14.853}, {'end': 906.07, 'text': 'So if you had a thousand different computers on this network that had contacted the DNS server, that all that information would be here.', 'start': 897.823, 'duration': 8.247}, {'end': 911.416, 'text': "Since I only have this one computer on the network right now, that's why it only says server.", 'start': 906.17, 'duration': 5.246}], 'summary': 'As the number of computers on the network increases, the list of domain names to ip addresses will also grow, potentially reaching a thousand for a comprehensive network.', 'duration': 28.506, 'max_score': 882.91, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/6c3mwjjr3AQ/pics/6c3mwjjr3AQ882910.jpg'}, {'end': 984.104, 'src': 'heatmap', 'start': 936.251, 'weight': 0.979, 'content': [{'end': 948.533, 'text': "If I right click on etcg.com or whatever your zone name is, that's called a zone, whatever that is, I can go and I can create a new record.", 'start': 936.251, 'duration': 12.282}, {'end': 952.514, 'text': 'So new host A or A, A, A, A, A.', 'start': 948.993, 'duration': 3.521}, {'end': 955.255, 'text': 'And this will create a record.', 'start': 953.474, 'duration': 1.781}, {'end': 958.177, 'text': 'So I want to create a record for printer.', 'start': 955.335, 'duration': 2.842}, {'end': 966.172, 'text': 'And I will give an IP address of 10.1.', 'start': 959.338, 'duration': 6.834}, {'end': 968.844, 'text': "10.50 Now I don't check off anything else here.", 'start': 966.172, 'duration': 2.672}, {'end': 970.585, 'text': "We'll worry about those in different classes.", 'start': 968.884, 'duration': 1.701}, {'end': 973.867, 'text': 'And now I can add host.', 'start': 971.285, 'duration': 2.582}, {'end': 975.748, 'text': "So it's been successfully created.", 'start': 973.967, 'duration': 1.781}, {'end': 977.869, 'text': 'If we can see here.', 'start': 976.909, 'duration': 0.96}, {'end': 979.45, 'text': "So I've added this.", 'start': 978.029, 'duration': 1.421}, {'end': 980.551, 'text': 'So printer.', 'start': 979.61, 'duration': 0.941}, {'end': 984.104, 'text': 'now maps to 10.1.', 'start': 980.993, 'duration': 3.111}], 'summary': 'Creating a new record for printer with ip address 10.1.10.50 in a zone.', 'duration': 47.853, 'max_score': 936.251, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/6c3mwjjr3AQ/pics/6c3mwjjr3AQ936251.jpg'}, {'end': 1103.749, 'src': 'embed', 'start': 1076.569, 'weight': 2, 'content': [{'end': 1083.772, 'text': "And if you are having problems, let's say you're trying to ping a computer but it keeps returning the wrong IP address.", 'start': 1076.569, 'duration': 7.203}, {'end': 1093.721, 'text': 'Well, you can go in now to the DNS and you can see, oh, I can see that that host name is being pointed to the wrong IP address.', 'start': 1083.812, 'duration': 9.909}, {'end': 1096.203, 'text': 'Let me go in there and edit it or change it.', 'start': 1093.741, 'duration': 2.462}, {'end': 1100.646, 'text': 'This is just a basic concept for DNS.', 'start': 1096.663, 'duration': 3.983}, {'end': 1103.749, 'text': 'From here, we can go and start to do some more complicated stuff.', 'start': 1101.087, 'duration': 2.662}], 'summary': 'Troubleshooting dns issues by identifying and correcting wrong ip addresses, and progressing to more advanced tasks.', 'duration': 27.18, 'max_score': 1076.569, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/6c3mwjjr3AQ/pics/6c3mwjjr3AQ1076569.jpg'}], 'start': 723.649, 'title': 'Dns server troubleshooting and introduction to using dns server', 'summary': 'Covers scavenged stale resource records, clearing the cache, and restarting the dns server for troubleshooting, followed by checking global logs and dns events for insights. it also introduces the basic concepts of using dns server on windows server 2012, emphasizing domain name to ip address mapping and record management within the forward lookup zone.', 'chapters': [{'end': 761.892, 'start': 723.649, 'title': 'Dns server troubleshooting', 'summary': 'Covers scavenged stale resource records, clearing the cache, and restarting the dns server, followed by checking global logs and dns events for troubleshooting major errors, providing insights through the event viewer.', 'duration': 38.243, 'highlights': ['Checking global logs and DNS events for troubleshooting major errors and insights through the event viewer.', 'Scavenged stale resource records, clearing the cache, and restarting the DNS server are essential for server maintenance.']}, {'end': 1120.383, 'start': 761.892, 'title': 'Introduction to using dns server', 'summary': 'Introduces the basic concepts of using dns server on windows server 2012, emphasizing the mapping of domain names to ip addresses and the ability to add and manage records within the forward lookup zone.', 'duration': 358.491, 'highlights': ['The DNS server maps domain names or host names to IP addresses, with the list of domain names increasing in size as more computers join the network.', 'Adding a record to the forward lookup zone allows for the association of a domain name with an IP address, facilitating easier access to devices on the network.', 'Understanding the basic configurations of DNS, including identifying host name to IP address information and troubleshooting incorrect IP address resolutions, is crucial for managing the DNS server and resolving network issues.']}], 'duration': 396.734, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/6c3mwjjr3AQ/pics/6c3mwjjr3AQ723649.jpg', 'highlights': ['Checking global logs and DNS events for troubleshooting major errors and insights through the event viewer.', 'Scavenged stale resource records, clearing the cache, and restarting the DNS server are essential for server maintenance.', 'Understanding the basic configurations of DNS, including identifying host name to IP address information and troubleshooting incorrect IP address resolutions, is crucial for managing the DNS server and resolving network issues.', 'Adding a record to the forward lookup zone allows for the association of a domain name with an IP address, facilitating easier access to devices on the network.', 'The DNS server maps domain names or host names to IP addresses, with the list of domain names increasing in size as more computers join the network.']}], 'highlights': ['The DNS server maps domain names to IP addresses, a vital function for Windows Server architecture and TCP/IP networking.', 'The class emphasizes the importance of understanding basic DNS concepts before delving into more complex enterprise-level DNS configurations.', 'The instructor aims to help students comfortably navigate the DNS control panel and verify its functionality for Windows Server 2012.', 'The instructor stresses the need to gradually build understanding of DNS before addressing advanced topics like sites, replication, and security concerns in enterprise environments.', 'The chapter demonstrates the process of creating a domain controller in an Active Directory system using Windows Server 2012, including the steps to access Server Manager, check installed services like DNS and DHCP, and interact with the DNS server.', 'The use of Microsoft Management Console control panel for interacting with the DNS server is emphasized, showing the server name and options available upon right-clicking the server icon.', 'The class focuses on basic DNS concepts, such as log file management, DNS cache clearing, service restarting, database scavenging, and manual addition of hostname to IP address records.', 'It also highlights the user interface issues with Microsoft, where accessing the DNS button in the Server Manager does not provide expected control panel access, only displaying the log file.', 'Checking global logs and DNS events for troubleshooting major errors and insights through the event viewer.', 'Scavenged stale resource records, clearing the cache, and restarting the DNS server are essential for server maintenance.', 'Understanding the basic configurations of DNS, including identifying host name to IP address information and troubleshooting incorrect IP address resolutions, is crucial for managing the DNS server and resolving network issues.', 'Adding a record to the forward lookup zone allows for the association of a domain name with an IP address, facilitating easier access to devices on the network.', 'The DNS server maps domain names or host names to IP addresses, with the list of domain names increasing in size as more computers join the network.', 'Implementing scavenged stale resource records helps in cleaning up outdated DNS records after frequent server changes, preventing issues such as names being mapped to non-existent addresses.', 'The process involves identifying and removing outdated records, preventing the accumulation of obsolete data that can cause disruptions in DNS functionality.', 'Clearing DNS cache is important, especially in lab environments, to avoid giving bad information to local computers.', 'Restarting DNS services after making modifications is crucial to ensure that all configurations have been picked up and no old configurations are being used.', 'It is emphasized that this tool may not be needed frequently, even in enterprise environments, but it is crucial for maintaining DNS integrity in lab environments with rapid server deployments and removals.', 'The DNS servers store information in cache to avoid repeatedly asking higher level DNS servers for the same information, ultimately improving performance and efficiency.']}