DNS Analytics solution in Azure Log Analytics.This article describes how to set up and use the Azure DNS Analytics solution in Azure Log Analytics to gather insights into DNS infrastructure on security, performance, and operations.DNS Analytics helps you to Identify clients that try to resolve malicious domain names.Identify stale resource records.Identify frequently queried domain names and talkative DNS clients.View request load on DNS servers.View dynamic DNS registration failures.The solution collects, analyzes, and correlates Windows DNS analytic and audit logs and other related data from your DNS servers.Connected sources.The following table describes the connected sources that are supported by this solution Connected source.Support.Description.Windows agents.Yes.The solution collects DNS information from Windows agents.Linux agents.No.The solution does not collect DNS information from direct Linux agents.System Center Operations Manager management group.Yes.The solution collects DNS information from agents in a connected Operations Manager management group.A direct connection from the Operations Manager agent to the Operations Management Suite is not required.Data is forwarded from the management group to the Operations Management Suite repository.Azure storage account.No. Microsoft Sql Server Error 36241 . Azure storage isnt used by the solution.Data collection details.The solution collects DNS inventory and DNS event related data from the DNS servers where a Log Analytics agent is installed.This data is then uploaded to Log Analytics and displayed in the solution dashboard.Inventory related data, such as the number of DNS servers, zones, and resource records, is collected by running the DNS Power.Create-Zone-File-in-DNS.png' alt='How To Update Dns Records In Linux' title='How To Update Dns Records In Linux' />Shell cmdlets.The data is updated once every two days.The event related data is collected near real time from the analytic and audit logs provided by enhanced DNS logging and diagnostics in Windows Server 2.R2.Configuration.Use the following information to configure the solution The solution starts collecting data without the need of further configuration.However, you can use the following configuration to customize data collection.Configure the solution.On the solution dashboard, click Configuration to open the DNS Analytics Configuration page.There are two types of configuration changes that you can make Whitelisted Domain Names.The solution does not process all the lookup queries.It maintains a whitelist of domain name suffixes.How To Update Dns Records In Linux' title='How To Update Dns Records In Linux' />The lookup queries that resolve to the domain names that match domain name suffixes in this whitelist are not processed by the solution.Not processing whitelisted domain names helps to optimize the data sent to Log Analytics.The default whitelist includes popular public domain names, such as www.You can view the complete default list by scrolling.You can modify the list to add any domain name suffix that you want to view lookup insights for.Features.Dynamic DNS updates for Mac, Linux, Windows Support for DDWRT, Draytek, Synology many other routers Simple control panel for users to updatechange DNS.Managing DNS In Windows Server 2012 Previously, I covered installing the DNS role in Windows Server 2012.Once installed, managing the role is very similar to how.We use windows server 2003 for DNS on our network.The forward DNS entries A records for windows machines on the domain are populated automatically.However, the.You can also remove any domain name suffix that you dont want to view lookup insights for.Talkative Client Threshold.DNS clients that exceed the threshold for the number of lookup requests are highlighted in the DNS Clients blade.The default threshold is 1,0.You can edit the threshold.Management packs.If you are using the Microsoft Monitoring Agent to connect to your Operations Management Suite workspace, the following management pack is installed Microsoft DNS Data Collector Intelligence Pack Microsft.Intelligence.Packs.DnsIf your Operations Manager management group is connected to your Operations Management Suite workspace, the following management packs are installed in Operations Manager when you add this solution.There is no required configuration or maintenance of these management packs Microsoft DNS Data Collector Intelligence Pack Microsft.Intelligence.Packs.DnsMicrosoft System Center Advisor DNS Analytics Configuration Microsoft.Intelligence.Pack.Dns. ConfigurationFor more information on how solution management packs are updated, see Connect Operations Manager to Log Analytics.Pc Vista Ohne Cd Neu Aufsetzen .Use the DNS Analytics solution.This section explains all the dashboard functions and how to use them.After youve added the solution to your workspace, the solution tile on the Operations Management Suite Overview page provides a quick summary of your DNS infrastructure.It includes the number of DNS servers where the data is being collected.It also includes the number of requests made by clients to resolve malicious domains in the past 2.When you click the tile, the solution dashboard opens.Solution dashboard.The solution dashboard shows summarized information for the various features of the solution.It also includes links to the detailed view for forensic analysis and diagnosis.By default, the data is shown for the last seven days.You can change the date and time range by using the date time selection control, as shown in the following image The solution dashboard shows the following blades DNS Security.Reports the DNS clients that are trying to communicate with malicious domains.By using Microsoft threat intelligence feeds, DNS Analytics can detect client IPs that are trying to access malicious domains.In many cases, malware infected devices dial out to the command and control center of the malicious domain by resolving the malware domain name.When you click a client IP in the list, Log Search opens and shows the lookup details of the respective query.In the following example, DNS Analytics detected that the communication was done with an IRCbot The information helps you to identify the Client IP that initiated the communication.Domain name that resolves to the malicious IP.IP addresses that the domain name resolves to.Malicious IP address.Severity of the issue.Reason for blacklisting the malicious IP.Detection time.Domains Queried.Provides the most frequent domain names being queried by the DNS clients in your environment.You can view the list of all the domain names queried.You can also drill down into the lookup request details of a specific domain name in Log Search.DNS Clients.Reports the clients breaching the threshold for number of queries in the chosen time period.You can view the list of all the DNS clients and the details of the queries made by them in Log Search.Dynamic DNS Registrations.Reports name registration failures.All registration failures for address resource records Type A and AAAA are highlighted along with the client IPs that made the registration requests.You can then use this information to find the root cause of the registration failure by following these steps Find the zone that is authoritative for the name that the client is trying to update.Use the solution to check the inventory information of that zone.Verify that the dynamic update for the zone is enabled.Check whether the zone is configured for secure dynamic update or not.Name registration requests.The upper tile shows a trendline of successful and failed DNS dynamic update requests.The lower tile lists the top 1.DNS update requests to the DNS servers, sorted by the number of failures.Sample DDI Analytics Queries.Contains a list of the most common search queries that fetch raw analytics data directly.You can use these queries as a starting point for creating your own queries for customized reporting.The queries link to the DNS Analytics Log Search page where results are displayed List of DNS Servers.Shows a list of all DNS servers with their associated FQDN, domain name, forest name, and server IPs.List of DNS Zones.Shows a list of all DNS zones with the associated zone name, dynamic update status, name servers, and DNSSEC signing status.Unused Resource Records.Shows a list of all the unusedstale resource records.This list contains the resource record name, resource record type, the associated DNS server, record generation time, and zone name.You can use this list to identify the DNS resource records that are no longer in use.Based on this information, you can then remove those entries from the DNS servers.DNS Servers Query Load.Shows information so that you can get a perspective of the DNS load on your DNS servers.This information can help you plan the capacity for the servers.You can go to the Metrics tab to change the view to a graphical visualization.This view helps you understand how the DNS load is distributed across your DNS servers.It shows DNS query rate trends for each server.DNS Zones Query Load.Reverse DNS not automatically updating on Windows DNS server.This could be due to a couple of different things 1 Are your clients obtaining IPs via a Windows DHCP Server If so, your DHCP server may not be configured to auto register their IP with the DNS server.To check, right click your DHCP scope and go to properties.On the DNS tab enable DNS dynamic updates and set to Always dynamically update.Also enable Dynamic Update for clients that do not request updates.Even if these are enabled, you might need to make sure the DHCP server has permissions to update DNS records.If your DHCP server is also a domain controller, then you are probably fine, if not, then you may want to see if the DHCP server is a member of the Dns.Update.Proxy group in AD.Then check the Security tab on the Reverse Zone and make sure that group is authorized to create all child objects DNS records2 If your statically configured hosts are not updating the reverse zone, make sure their NICs are configured to register their IP in DNS Windows hosts are enabled for this by default.If they are in the forward zone but not the reverse, then something else is going on.If the issue is that your reverse zones are mismatched between domain controllers meaning a host was able to register with one of the DCs, but the registration did not get replicated to the others it could mean the zones themselves arent replicating between domain controllers.Make sure the reverse zone is AD Integrated and also check the Zone Transfers tab and make sure they are allowed generally Only to servers listed on the Name Servers tab.Also make sure your DNS server are listed on the Name Servers tab.Thats all I can think of for now.EDITOk so given that your DHCP server is not registering the records on behalf of the clients, and aside from your windows clients not being set to register with DNS on their NICs which you should verify in TCPIP properties on the client NIC, I would check the security settings on your reverse zone to make sure clients are allowed to register in the reverse zone.This article covers the default security settings for DNS zones http technet.WS.
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