Stream CEF logs to Microsoft Sentinel with the AMA connector (2023)

  • Article
  • 9 minutes to read

This article describes how to use the Common Event Format (CEF) via AMA connector to quickly filter and upload logs in the Common Event Format (CEF) from multiple on-premises appliances over Syslog.

The connector uses the Azure Monitor Agent (AMA), which uses Data Collection Rules (DCRs). With DCRs, you can filter the logs before they're ingested, for quicker upload, efficient analysis, and querying.

Important

The CEF via AMA connector is currently in PREVIEW. The Azure Preview Supplemental Terms include additional legal terms that apply to Azure features that are in beta, preview, or otherwise not yet released into general availability.

The AMA is installed on a Linux machine that acts as a log forwarder, and the AMA collects the logs in the CEF format.

  • Set up the connector
  • Learn more about the connector

Important

On February 28th 2023, we will introduce changes to the CommonSecurityLog table schema. This means that custom queries will require being reviewed and updated. Out-of-the-box content (detections, hunting queries, workbooks, parsers, etc.) will be updated by Microsoft Sentinel.

Overview

What is CEF collection?

Many network, security appliances, and devices send their logs in the CEF format over Syslog. This format includes more structured information than Syslog, with information presented in a parsed key-value arrangement.

If your appliance or system sends logs over Syslog using CEF, the integration with Microsoft Sentinel allows you to easily run analytics and queries across the data.

CEF normalizes the data, making it more immediately useful for analysis with Microsoft Sentinel. Microsoft Sentinel also allows you to ingest unparsed Syslog events, and to analyze them with query time parsing.

(Video) Onboarding Windows Security Events to Microsoft Sentinel via AMA - Full Demo

How collection works with the Common Event Format (CEF) via AMA connector

Stream CEF logs to Microsoft Sentinel with the AMA connector (1)

  1. Your organization sets up a log forwarder (Linux VM), if one doesn't already exist. The forwarder can be on-premises or cloud-based.
  2. Your organization uploads CEF logs from your source devices to the forwarder.
  3. The AMA connector installed on the log forwarder collects and parses the logs.
  4. The connector streams the events to the Microsoft Sentinel workspace to be further analyzed.

When you install a log forwarder, the originating device must be configured to send Syslog events to the Syslog daemon on this forwarder instead of the local daemon. The Syslog daemon on the forwarder sends events to the Azure Monitor Agent over UDP. If this Linux forwarder is expected to collect a high volume of Syslog events, its Syslog daemon sends events to the agent over TCP instead. In either case, the agent then sends the events from there to your Log Analytics workspace in Microsoft Sentinel.

Stream CEF logs to Microsoft Sentinel with the AMA connector (2)

Set up the Common Event Format (CEF) via AMA connector

Prerequisites

Before you begin, verify that you have:

  • The Microsoft Sentinel solution enabled.
  • A defined Microsoft Sentinel workspace.
  • A Linux machine to collect logs.
    • The Linux machine must have Python 2.7 or 3 installed on the Linux machine. Use the python --version or python3 --version command to check.
  • Either the syslog-ng or rsyslog daemon enabled.
  • To collect events from any system that isn't an Azure virtual machine, ensure that Azure Arc is installed.

Configure a log forwarder

To ingest Syslog and CEF logs into Microsoft Sentinel, you need to designate and configure a Linux machine that collects the logs from your devices and forwards them to your Microsoft Sentinel workspace. This machine can be a physical or virtual machine in your on-premises environment, an Azure VM, or a VM in another cloud. If this machine is not an Azure VM, it must have Azure Arc installed (see the prerequisites).

This machine has two components that take part in this process:

  • A Syslog daemon, either rsyslog or syslog-ng, which collects the logs.
  • The AMA, which forwards the logs to Microsoft Sentinel.

When you set up the connector and the DCR, you run a script on the Linux machine, which configures the built-in Linux Syslog daemon (rsyslog.d/syslog-ng) to listen for Syslog messages from your security solutions on TCP/UDP port 514.

The DCR installs the AMA to collect and parse the logs.

Log forwarder - security considerations

Make sure to configure the machine's security according to your organization's security policy. For example, you can configure your network to align with your corporate network security policy and change the ports and protocols in the daemon to align with your requirements. To improve your machine security configuration, secure your VM in Azure, or review these best practices for network security.

If your devices are sending Syslog and CEF logs over TLS (because, for example, your log forwarder is in the cloud), you need to configure the Syslog daemon (rsyslog or syslog-ng) to communicate in TLS:

Set up the connector

You can set up the connector in two ways:

  • Microsoft Sentinel portal. With this setup, you can create, manage, and delete DCRs per workspace.
  • API. With this setup, you can create, manage, and delete DCRs. This option is more flexible than the UI. For example, with the API, you can filter by specific log levels, where with the UI, you can only select a minimum log level.

Set up the connector in the Microsoft Sentinel portal (UI)

  1. Open the connector page and create the DCR
  2. Define resources (VMs)
  3. Select the data source type and create the DCR
  4. Run the installation script
Open the connector page and create the DCR
  1. Open the Azure portal and navigate to the Microsoft Sentinel service.

  2. Select Data connectors, and in the search bar, type CEF.

  3. Select the Common Event Format (CEF) via AMA (Preview) connector.

    (Video) AMA Agent With Sentinel

  4. Below the connector description, select Open connector page.

  5. In the Configuration area, select Create data collection rule.

  6. Under Basics:

    • Type a DCR name
    • Select your subscription
    • Select the resource group where your collector is defined

Define resources (VMs)

Select the machines on which you want to install the AMA. These machines are VMs or on-premises Linux machines with Arc installed.

  1. Select the Resources tab and select Add Resource(s).

  2. Select the VMs on which you want to install the connector to collect logs.

  3. Review your changes and select Collect.

Select the data source type and create the DCR

Note

Using the same machine to forward both plain Syslog and CEF messages

If you plan to use this log forwarder machine to forward Syslog messages as well as CEF, in order to avoid the duplication of events to the Syslog and CommonSecurityLog tables:

On each source machine that sends logs to the forwarder in CEF format, you must edit the Syslog configuration file to remove the facilities that are being used to send CEF messages. This way, the facilities that are sent in CEF won't also be sent in Syslog.

(Video) Sending logs from Syslog Server to Azure Sentinel(tcpdump,client,server setup - rsyslog.conf)

  1. Select the Collect tab and select Linux syslog as the data source type.

  2. Configure the minimum log level for each facility. When you select a log level, Microsoft Sentinel collects logs for the selected level and other levels with higher severity. For example, if you select LOG_ERR, Microsoft Sentinel collects logs for the LOG_ERR, LOG_CRIT, LOG_ALERT, and LOG_EMERG levels.

    Stream CEF logs to Microsoft Sentinel with the AMA connector (5)

  3. Review your changes and select Next: Review and create.

  4. In the Review and create tab, select Create.

Run the installation script
  1. Log in to the Linux forwarder machine, where you want the AMA to be installed.

  2. Run this command to launch the installation script:

    sudo wget -O Forwarder_AMA_installer.py https://raw.githubusercontent.com/Azure/Azure-Sentinel/master/DataConnectors/Syslog/Forwarder_AMA_installer.py&&sudo python Forwarder_AMA_installer.py

    The installation script configures the rsyslog or syslog-ng daemon to use the required protocol and restarts the daemon.

    Note

    To avoid Full Disk scenarios where the agent can't function, we recommend that you set the syslog-ng or rsyslog configuration not to store unneeded logs. A Full Disk scenario disrupts the function of the installed AMA.Read more about RSyslog or Syslog-ng.

Set up the connector with the API

You can create DCRs using the API. Learn more about DCRs.

Run this command to launch the installation script:

sudo wget -O Forwarder_AMA_installer.py https://raw.githubusercontent.com/Azure/Azure-Sentinel/master/DataConnectors/Syslog/Forwarder_AMA_installer.py&&sudo python Forwarder_AMA_installer.py 

The installation script configures the rsyslog or syslog-ng daemon to use the required protocol and restarts the daemon.

(Video) Azure Sentinel Lab Series | Setup Syslog Collector and install Azure Sentinel Agent | EP1

Request URL and header 

GEThttps://management.azure.com/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Insights/dataCollectionRules/{dataCollectionRuleName}?api-version=2019-11-01-preview

Request body

Edit the template:

  • Verify that the streams field is set to Microsoft-CommonSecurityLog.
  • Add the filter and facility log levels in the facilityNames and logLevels parameters.
{ "properties": { "immutableId": "dcr-bcc4039c90f0489b80927bbdf1f26008", "dataSources": { "syslog": [ { "streams": [ "Microsoft-CommonSecurityLog" ], "facilityNames": [ "*" ], "logLevels": [ "*" ], "name": "sysLogsDataSource-1688419672" } ] }, "destinations": { "logAnalytics": [ { "workspaceResourceId": "/subscriptions/{Your-Subscription-Id}/resourceGroups/{resourceGroupName}/providers/Microsoft.OperationalInsights/workspaces/{SentinelWorkspaceName}", "workspaceId": "123x56xx-9123-xx4x-567x-89123xxx45","name": "la-140366483" } ] }, "dataFlows": [ { "streams": [ "Microsoft-CommonSecurityLog" ], "destinations": [ "la-140366483" ] } ], "provisioningState": "Succeeded" }, "location": "westeurope", "tags": {}, "kind": "Linux", "id": "/subscriptions/{Your-Subscription- Id}/resourceGroups/{resourceGroupName}/providers/Microsoft.Insights/dataCollectionRules/{DCRName}", "name": "{DCRName}", "type": "Microsoft.Insights/dataCollectionRules", "etag": "\"2401b6f3-0000-0d00-0000-618bbf430000\""}

After you finish editing the template, use POST or PUT to deploy it:

PUThttps://management.azure.com/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Insights/dataCollectionRules/{dataCollectionRuleName}?api-version=2019-11-01-preview

Examples of facilities and log levels sections

Review these examples of the facilities and log levels settings. The name field includes the filter name.

This example collects events from the cron, daemon, local0, local3 and uucp facilities, with the Warning, Error, Critical, Alert, and Emergency log levels:

 "syslog": [ { "streams": [ "Microsoft-CommonSecurityLog" ], "facilityNames": [ "cron", "daemon", "local0", "local3", "uucp" ], "logLevels": [ "Warning", "Error", "Critical", "Alert", "Emergency" ], "name": "sysLogsDataSource-1688419672" }]

This example collects events for:

  • The authpriv and mark facilities with the Info, Notice, Warning, Error, Critical, Alert, and Emergency log levels
  • The daemon facility with the Warning, Error, Critical, Alert, and Emergency log levels
  • The kern, local0, local5, and news facilities with the Critical, Alert, and Emergency log levels
  • The mail and uucp facilities with the Emergency log level
 "syslog": [ { "streams": [ "Microsoft-CommonSecurityLog" ], "facilityNames": [ "authpriv", "mark" ], "logLevels": [ "Info", "Notice", "Warning", "Error", "Critical", "Alert", "Emergency" ], "name": "sysLogsDataSource--1469397783" }, { "streams": [ "Microsoft-CommonSecurityLog" ], "facilityNames": [ "daemon" ], "logLevels": [ "Warning", "Error", "Critical", "Alert", "Emergency" ], "name": "sysLogsDataSource--1343576735" }, { "streams": [ "Microsoft-CommonSecurityLog" ], "facilityNames": [ "kern", "local0", "local5", "news" ], "logLevels": [ "Critical", "Alert", "Emergency" ], "name": "sysLogsDataSource--1469572587" }, { "streams": [ "Microsoft-CommonSecurityLog" ], "facilityNames": [ "mail", "uucp" ], "logLevels": [ "Emergency" ], "name": "sysLogsDataSource-1689584311" } ]}

Test the connector

  1. To validate that the syslog daemon is running on the UDP port and that the AMA is listening, run this command:

    netstat -lnptv

    You should see the rsyslog or syslog-ng daemon listening on port 514.

  2. To capture messages sent from a logger or a connected device, run this command in the background:

    tcpdump -I any port 514 -A vv &
  3. After you complete the validation, we recommend that you stop the tcpdump: Type fg and then select Ctrl+C.

  4. To send demo messages, do one of the following:

    • Use the netcat utility. In this example, the utility reads data posted through the echo command with the newline switch turned off. The utility then writes the data to UDP port 514 on the localhost with no timeout. To execute the netcat utility, you might need to install an additional package.

      echo -n "<164>CEF:0|Mock-test|MOCK|common=event-format-test|end|TRAFFIC|1|rt=$common=event-formatted-receive_time" | nc -u -w0 localhost 514
    • Use the logger. This example writes the message to the local 4 facility, at severity level Warning, to port 514, on the local host, in the CEF RFC format. The -t and --rfc3164 flags are used to comply with the expected RFC format.

      logger -p local4.warn -P 514 -n 127.0.0.1 --rfc3164 -t CEF "0|Mock-test|MOCK|common=event-format-test|end|TRAFFIC|1|rt=$common=event-formatted-receive_time"
  5. To verify that the connector is installed correctly, run the troubleshooting script with this command:

    sudo wget -O cef_AMA_troubleshoot.py https://raw.githubusercontent.com/Azure/Azure-Sentinel/master/DataConnectors/CEF/cef_AMA_troubleshoot.py&&sudo python cef_AMA_troubleshoot.py

Next steps

In this article, you learned how to set up the Windows CEF via AMA connector to upload data from appliances that support CEF over Syslog. To learn more about Microsoft Sentinel, see the following articles:

(Video) Troubleshooting Microsoft Sentinel CEF environment

  • Learn how to get visibility into your data, and potential threats.
  • Get started detecting threats with Microsoft Sentinel.
  • Use workbooks to monitor your data.

FAQs

How do I send logs to Azure Sentinel? ›

To log a service to Sentinel, pick the service (1), select "Activity Log" from the menu (2), and then click the "Logs" button (3). Note that on this screen, before pressing "Logs," you can review the information that will be sent to Sentinel.

How do I send Syslog to Sentinel? ›

Configure your Linux machine or appliance. From the Microsoft Sentinel navigation menu, select Data connectors. From the connectors gallery, select Syslog and then select Open connector page.

What is AMA connector? ›

Use the AMA connector to upload and filter data from your Windows DNS server logs. You can then dive into your logs to protect your DNS servers from threats and attacks. Troubleshoot a connection between Microsoft Sentinel and a CEF or Syslog data connector.

What is CEF in Sentinel? ›

For information about feature availability in US Government clouds, see the Microsoft Sentinel tables in Cloud feature availability for US Government customers. Many networking and security devices and appliances send their system logs over the Syslog protocol in a specialized format known as Common Event Format (CEF).

What is the difference between CEF and Syslog? ›

The advantage of CEF over Syslog is that it ensures the data is normalized making it more immediately useful for analysis using Sentinel. However, unlike many other SIEM products, Sentinel allows ingesting unparsed Syslog events and performing analytics on them using query time parsing.

How do I push logs into Azure monitor? ›

In the Azure portal, select Log Analytics workspaces > your workspace. Under the Classic section, select Legacy custom logs. By default, all configuration changes are automatically pushed to all agents. For Linux agents, a configuration file is sent to the Fluentd data collector.

How do I forward logs to syslog? ›

  1. Create a syslog server profile. Go to Device > Server Profiles > Syslog. ...
  2. Create a log forwarding profile. Go to Objects > Log forwarding. ...
  3. Use the log forwarding profile in your security policy. Go to Policies > Security. ...
  4. Don't forget to commit your changes when you're finished.
Sep 25, 2018

How do I forward logs to a syslog server? ›

Go to Device > Server Profiles > Syslog. Go to Device > Log settings > System.
...
Forwarding System logs to a syslog server requires three steps:
  1. Create a syslog server profile.
  2. Configure the system logs to use the Syslog server profile to forward the logs.
  3. Commit the changes.
Sep 25, 2018

Which Azure Active Directory logs can you connect to Microsoft Sentinel? ›

An Azure Active Directory P1 or P2 license is required to ingest sign-in logs into Microsoft Sentinel. Any Azure AD license (Free/O365/P1/P2) is sufficient to ingest the other log types.

What is the difference between MMA and AMA in Sentinel? ›

The biggest difference is based on the Data Collection Rules. The new AMA agent makes it possible to enable data collection based on DCR rules. The MMA agent was not flexible enough to choose what specific events to collect and was separated into 4 selections (All Events, Common, Minimal, none).

How to migrate MMA to AMA? ›

Migrate from MMA to AMA
  1. Deploy Microsoft Defender for Endpoint agent on Windows virtual machines.
  2. Deploy Microsoft Defender for Endpoint agent on Windows Azure Arc machines.
  3. Deploy Microsoft Defender for Endpoint agent on Linux hybrid machines.
  4. Deploy Microsoft Defender for Endpoint agent on Linux virtual machines.
Aug 15, 2022

What is Windows DNS events via AMA? ›

Windows DNS Events via AMA connector
  • Identify clients that try to resolve malicious domain names.
  • View and monitor request loads on DNS servers.
  • View dynamic DNS registration failures.
  • Identify frequently queried domain names and talkative clients.
  • Identify stale resource records.
  • View all DNS related logs in one place.
Jan 3, 2023

What are CEF logs? ›

The CEF is an open log management standard that improves the interoperability of security-related information from different security and network devices and applications.

How does Sentinel collect logs? ›

The device's built-in Syslog daemon collects local events of the specified types, and forwards the events locally to the agent. The agent streams the events to your Log Analytics workspace. After successful configuration, the data appears in the Log Analytics Syslog table.

What is CEF process? ›

Cisco Express Forwarding (CEF)

CEF switching is a Cisco proprietary and advanced Layer3 IP switching mechanism that was designed to tackle the deficiencies associated with fast-switching. CEF optimizes performance, scalability, and resiliency for large and complex networks with dynamic traffic patterns.

Can MPLS work without CEF? ›

Without CEF, MPLS forwarding does not occur. MPLS forwarding relies heavily on the IP routing table and the CEF architecture. Therefore, MPLS VPN relies on CEF because MPLS VPN depends on MPLS for successful operation.

Is CEF a syslog? ›

Common Event Format (CEF)and Log Event Extended Format (LEEF) are open standard syslog formats for log management and interoperabily of security related information from different devices, network appliances and applications.

Does Windows have a syslog server? ›

Windows-based servers don't support Syslog natively, but many third-party tools are available to allow Windows devices to communicate with a Syslog server.

How do I enable Azure log stream? ›

To turn on the streaming logs for your function app in Azure:
  1. Select F1 to open the command palette, and then search for and run the command Azure Functions: Start Streaming Logs.
  2. Select your function app in Azure, and then select Yes to enable application logging for the function app.
  3. Trigger your functions in Azure.
Feb 14, 2022

What is the difference between Azure Monitor and Log Analytics? ›

Monitor is the brand, and Log Analytics is one of the solutions. Log Analytics and Application Insights have been consolidated into Azure Monitor to provide a single integrated experience for monitoring Azure resources and hybrid environments.

What is the difference between Azure Monitor logs and metrics? ›

Azure Monitor Metrics can only store numeric data in a particular structure, whereas Azure Monitor Logs can store a variety of data types that have their own structures. You can also perform complex analysis on Azure Monitor Logs data by using log queries, which can't be used for analysis of Azure Monitor Metrics data.

How do I send syslog logs to a server in Windows? ›

How to forward Windows event logs to a syslog server (Syslog...
  1. Install EventLog Inspector and run EventLog Inspector Manager.
  2. Make sure the service is running and marked to start automatically.
  3. Switch to Settings tab ad elect the Syslog group.

Which port is used for syslog transfer? ›

Syslog runs on UDP, where syslog servers listen to UDP port 514 and clients (sending log messages) use a port above 1023. Note that a syslog server will not send a message back to the client, but the syslog log server can communicate, normally using port 514.

How to send Cisco logs to syslog server? ›

How to Configure Syslog on a Cisco Device
  1. Step 1: Enable logging on the Cisco device. ...
  2. Step 2: Modify the syslog config for facility codes. ...
  3. Step 3: Change the default logging levels. ...
  4. Step 4: Define destination port and IP address. ...
  5. Step 5: Define source IP address. ...
  6. Step 6: Securing syslog messages on a Cisco device (Optional)
Jun 2, 2020

How do I setup event forwarding log? ›

This is one way to configure Windows Event forwarding.
...
Right-click Subscriptions and select Create Subscription.
  1. Enter a name and description for the subscription.
  2. For Destination Log, confirm that Forwarded Events is selected. ...
  3. Select Source computer initiated and click Select Computers Groups. ...
  4. Click Select Events.
Jan 18, 2023

How does syslog forwarding work? ›

A syslog forwarder is designed to receive system logs and send the data to the appropriate system much like a UDP forwarder, which forwards UDP packets to multiple devices. Upon receiving data, the UDP forwarder duplicates the UDP data (e.g. syslogs, NetFlow, IPFIX, etc.)

What is remote syslog forwarding? ›

When the remote syslog forwarding capability is enabled, it monitors local log files and forwards log entries from specific log files to a remote syslog server when new log entries are written in the local log files. Note: Each line in the appliance standard log file is treated as a separate remote syslog message.

What is the difference between Microsoft Sentinel and Azure Sentinel? ›

Azure Sentinel, now known as Microsoft Sentinel, centralizes your threat collection, detection, response, and investigation efforts. It provides threat intelligence and intelligent security analytic capabilities that facilitate threat visibility, alert detection, threat response, and proactive hunting.

Is Azure Sentinel and Microsoft Sentinel same? ›

Yes, Microsoft Sentinel is built on the Azure platform. It provides a fully integrated experience in the Azure portal to augment your existing services, such as Azure Security Center and Azure Machine Learning.

What are data connectors in Azure Sentinel? ›

Azure Sentinel enables you to use data connectors to configure connections with different Microsoft services, partner solutions, and other resources. There are several out-of-the-box data connectors available in Azure Sentinel, and there are different ways to ingest data when a connector is not available.

What are sentinel playbooks? ›

Playbooks in Microsoft Sentinel are based on workflows built in Azure Logic Apps, a cloud service that helps you schedule, automate, and orchestrate tasks and workflows across systems throughout the enterprise.

How many types of MMA are there? ›

3 Main MMA Fighting Styles: Striking, Jiu Jitsu, and Wrestling.

What is the difference between k1 and MMA? ›

Kickboxing is a pure striking martial art combining punches and kicks. MMA is a mixture of many martial arts from the striking, wrestling, and grappling realms, including kickboxing.

Can you master MMA? ›

The time you need to learn MMA will depend on the amount of experience you have had in the past. If you've already trained in some martial art, you will be able to learn in two to three years. If you haven't received any experience, you shouldn't expect anything less than five years.

Can I start MMA at home? ›

You can also do striking training at home. MMA borrows striking techniques from boxing, Muay Thai, karate, and other arts. You need first to grasp the different striking techniques before you start chaining them into combos. Start learning the basic punches.

Is Sentinel a PaaS or SaaS? ›

Is Azure Sentinel PaaS or SaaS? Azure Sentinel SIEM can be considered as SaaS (Security-as-a-Service) based on its high scalability when meeting the security needs of various organizations.

How do I view Windows DNS logs? ›

In Event Viewer, navigate to Applications and Services Logs\Microsoft\Windows\DNS-Server. Right-click DNS-Server, point to View, and then click Show Analytic and Debug Logs. The Analytical log will be displayed.

What is Microsoft AMA? ›

Azure Monitor Agent (AMA) collects monitoring data from the guest operating system of Azure and hybrid virtual machines and delivers it to Azure Monitor for use by features, insights, and other services, such as Microsoft Sentinel and Microsoft Defender for Cloud.

How do I monitor DNS activity? ›

To monitor DNS effectively, you should focus on the following components: IP addresses, SOA records, MX and SRV records, and NS records and root servers. IP addresses: Your monitoring system should be equipped to inform you if there is a mismatch between IP addresses.

How do I view CEF logs? ›

Login to the application or device which supports CEF log format. Go to syslog server configuration. In the field for Log Format, select CEF Format. In the Syslog Server IP address field, enter the <EventLog Analyzer IP address>.

What is CEF standard format? ›

The Common Event Format (CEF) standard format, developed by ArcSight, enables vendors and their customers to quickly integrate their product information into ArcSight ESM. CEF defines a syntax for log records comprised of a standard header and a variable extension, formatted as key-value pairs.

Where are logs stored on a syslog server? ›

/var/log/syslog and /var/log/messages store all global system activity data, including startup messages. Debian-based systems like Ubuntu store this in / var/log/syslog , while Red Hat-based systems like RHEL or CentOS use /var/log/messages .

Does Sentinel use Log Analytics? ›

Azure Sentinel uses a Log Analytics workspace as its backend, storing events and other information. Log Analytics workspaces are the same technology as Azure Data Explorer uses for its storage. These backends are ultra-scalable, and you can get back results in seconds using the Kusto Query Language (KQL).

Is Sentinel a SIEM or soar? ›

Microsoft Sentinel, in addition to being a Security Information and Event Management (SIEM) system, is also a platform for Security Orchestration, Automation, and Response (SOAR).

What database does Sentinel use? ›

The Sentinel Distributed Database is the collection of harmonized datasets from many different Data Partners. These datasets are all in the Sentinel Common Data Model format.

What is the purpose of IP CEF? ›

Cisco Express Forwarding (CEF) is advanced Layer 3 IP switching technology. CEF optimizes network performance and scalability for networks with large and dynamic traffic patterns, such as the Internet, on networks characterized by intensive Web-based applications, or interactive sessions.

What is IP CEF command used for? ›

Cisco Express Forwarding, CEF is advanced Layer 3 IP switching technology used on cisco router and switch. It is a feature that allows a router to quickly and efficiently make a route lookup. CEF optimizes routing table lookup by creating a special, easily searched tree structure based on the IP routing table.

How do I enable CEF on Cisco? ›

To enable CEF, use the ip cef command in global configuration mode. Enable dCEF when you want your line cards to perform express forwarding so that the route processor (RP) can handle routing protocols or switch packets from legacy interface processors.

How do I ship logs to SIEM? ›

To send RiskVision incident logs to a third-party SIEM product:
  1. Toggle the Enable SIEM logging switch to ON.
  2. Enter the IP address or hostname and communication Port for your SIEM server.
  3. Select a Transport protocol (TCP or UDP).
  4. Configure which logs to send by selecting one or more Threat levels.

How do I send Azure activity logs to storage? ›

Archive logs to an Azure storage account

Sign in to the Azure portal. Select Azure Active Directory > Monitoring > Audit logs. Select Export Data Settings.

How do I send telemetry data to Azure? ›

From your Iot hub in IoT Explorer, select View devices in this hub, then select your device from the list. On the left menu for your device, select Telemetry. Confirm that Use built-in event hub is set to Yes and then select Start. View the telemetry as the device sends messages to the cloud.

How do I send logs to Azure event hub? ›

Stream logs to an event hub
  1. Sign in to the Azure portal.
  2. Select Azure Active Directory > Audit logs.
  3. Select Export Data Settings.
  4. In the Diagnostics settings pane, do either of the following: ...
  5. Select the Stream to an event hub check box, and then select Event Hub/Configure.
Oct 31, 2022

What firewall logs to send to SIEM? ›

What should I log in a SIEM? You'll want the logs from the critical components of your network and business. You will want the logs from your firewall for sure. You will also want logs from your key servers, especially your Active Directory server and your key application and database servers.

What security logs should be sent to SIEM? ›

There are six different types of logs monitored by SIEM solutions:
  • Perimeter device logs.
  • Windows event logs.
  • Endpoint logs.
  • Application logs.
  • Proxy logs.
  • IoT logs.

What is the difference between resource logs and activity logs in Azure? ›

Activity logs also record Service Health events. Resource logs capture operations performed within an Azure resource (i.e., operations coming from the data plane), such as querying a database or writing to a storage bucket.

Which type of Azure storage will you use to store logs? ›

We recommend that you use Azure Storage logs in Azure Monitor instead of Storage Analytics logs.

How do you send data to log analytics workspace? ›

Add a custom log table
  1. Go to the Log Analytics workspaces menu in the Azure portal and select Tables. ...
  2. Specify a name for the table. ...
  3. Select Create a new data collection rule to create the DCR that will be used to send data to this table. ...
  4. Select the DCE that you created, and then select Next.
Feb 22, 2023

How do I transfer data from premises to Azure? ›

Monitor the migration.
  1. Prerequisites. To complete this tutorial, you need to: ...
  2. Assess your on-premises database. ...
  3. Migrate the sample schema. ...
  4. Register the resource provider. ...
  5. Create an Azure Database Migration Service instance. ...
  6. Create a migration project. ...
  7. Specify source details. ...
  8. Select databases for migration.
Feb 15, 2023

Which Azure service can help manage devices and receive telemetry? ›

Azure Monitor is a comprehensive monitoring solution for collecting, analyzing, and responding to telemetry from your cloud and on-premises environments. You can use Azure Monitor to maximize the availability and performance of your applications and services.

What is the difference between event hub and event grid? ›

The noticeable difference between them is that Event Hubs are accepting only endpoints for the ingestion of data and they don't provide a mechanism for sending data back to publishers. On the other hand, Event Grid sends HTTP requests to notify events that happen in publishers.

Can Azure send to syslog? ›

Azure Monitor supports collection of messages sent by rsyslog or syslog-ng, where rsyslog is the default daemon. The default Syslog daemon on version 5 of Red Hat Enterprise Linux, CentOS, and Oracle Linux version (sysklog) isn't supported for Syslog event collection.

How do I add logs to Event Viewer? ›

Procedure
  1. Select the Event Logs folder and click New on the toolbar.
  2. In the Event log name box, enter the name of the event log. ...
  3. In the Description box, you can optionally enter a brief description of the event log. ...
  4. Click Create.
  5. Select the new event log and click Properties on the toolbar. ...
  6. Click OK when done.

Videos

1. Microsoft Sentinel 101: Using a Cloud Native SIEM
(SANS Cloud Security)
2. Using Azure Sentinel with Logstash
(AzureVlog)
3. Integrating on Prem security information to Microsoft Sentinel
(SCOMathon)
4. Microsoft Sentinel Setup and Configuration
(Insight Solutions)
5. How to send Unix OS logs to Microsoft Sentinel [Microsoft Sentinel FAQ]
(Microsoft Security Community)
6. Azure Sentinel webinar: Log forwarder deep dive on filtering CEF and syslog events
(Microsoft Security)
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