Manual Chapter :
Configuring High-Speed
Remote Logging of DNS DoS events
Applies To:
Show VersionsBIG-IP AFM
- 17.0.0, 16.1.5, 16.1.4, 16.1.3, 16.1.2, 16.1.1, 16.1.0, 16.0.1, 16.0.0, 15.1.7, 15.1.6, 15.1.5, 15.1.4, 15.1.3, 15.1.2, 15.1.1, 15.1.0
Configuring High-Speed
Remote Logging of DNS DoS events
Overview: Configuring remote high-speed DNS logging
You can configure the BIG-IP system to log information about DNS traffic
and send the log messages to remote high-speed log servers. You can choose to log either DNS
queries or DNS responses, or both. In addition, you can configure the system to perform logging
on DNS traffic differently for specific resources. For example, you can configure logging for a
specific resource, and then disable and re-enable logging for the resource based on your network
administration needs.
This illustration shows the association of the configuration objects for remote high-speed
logging.
Create a pool of remote logging servers
Before creating a pool of log servers, gather the IP addresses of the servers that you want to include in the pool. Ensure that the remote log servers are configured to listen to and receive log messages from the BIG-IP system.
Create a pool of remote log servers to which the BIG-IP system can send log messages.
- At the top of the screen, clickConfiguration.
- On the Main tab, click.The Pool List screen opens.
- ClickCreate.The New Pool screen opens.
- In theNamefield, type a unique name for the pool.
- Using theNew Memberssetting, add the IP address for each remote logging server that you want to include in the pool:
- Type an IP address in theAddressfield, or select a node address from theNode List.
- Type a service number in theService Portfield, or select a service name from the list.Typical remote logging servers require port514.
- ClickAdd.
- ClickFinished.
Create a remote high-speed log destination
Before creating a remote high-speed log destination, ensure that at least one pool
of remote log servers exists on the BIG-IP system.
Create a log destination of the
Remote High-Speed Log
type to
specify that log messages are sent to a pool of remote log servers.- On the Main tab, click.The Log Destinations screen opens.
- ClickCreate.
- In theNamefield, type a unique, identifiable name for this destination.
- From theTypelist, selectRemote High-Speed Log.If you use log servers such as Remote Syslog, Splunk, or ArcSight, which require data be sent to the servers in a specific format, you must create an additional log destination of the required type, and associate it with a log destination of theRemote High-Speed Logtype. With this configuration, the BIG-IP system can send data to the servers in the required format.The BIG-IP system is configured to send an unformatted string of text to the log servers.
- From thePool Namelist, select the pool of remote log servers to which you want the BIG-IP system to send log messages.
- From theProtocollist, select the protocol used by the high-speed logging pool members.
- ClickFinished.
Create a formatted remote high-speed log destination
Ensure that at least one remote high-speed log destination exists on the BIG-IP system.
Create a formatted logging destination to specify that log messages are sent to a
pool of remote log servers, such as Remote Syslog, Splunk, or IPFIX servers.
- On the Main tab, click.The Log Destinations screen opens.
- ClickCreate.
- In theNamefield, type a unique, identifiable name for this destination.
- From theTypelist, select a formatted logging destination, such asRemote Syslog,Splunk, orIPFIX.The Splunk format is a predefined format of key value pairs.The BIG-IP system is configured to send a formatted string of text to the log servers.
- If you selectedRemote Syslog, then from theSyslog Formatlist select a format for the logs, and then from theHigh-Speed Log Destinationlist, select the destination that points to a pool of remote Syslog servers to which you want the BIG-IP system to send log messages.For logs coming from Access Policy Manager (APM), only the BSD Syslog format is supported.
- If you selectedSplunkorIPFIX, then from theForward Tolist, select the destination that points to a pool of high-speed log servers to which you want the BIG-IP system to send log messages.
- ClickFinished.
Create a publisher
Ensure that at least one destination associated with a pool of remote log servers
exists on the BIG-IP system.
Create a publisher to specify where the BIG-IP system sends log messages for
specific resources.
- On the Main tab, click.The Log Publishers screen opens.
- ClickCreate.
- In theNamefield, type a unique, identifiable name for this publisher.
- For theDestinationssetting, select a destination from theAvailablelist, and click<<to move the destination to theSelectedlist.If you are using a formatted destination, select the destination that matches your log servers, such as Remote Syslog, Splunk, or ArcSight.
- ClickFinished.
Create a custom
DNS DoS protection logging profile
Create a custom logging profile to log DNS DoS
events and send the log messages to a specific location.
- On the Main tab, click.The Logging Profiles list screen opens.
- ClickCreate.The Create New Logging Profile screen opens.
- In theProfile Namefield, type a unique name for the logging profile.
- In the Logging Profile Properties, select theDoS Protectioncheck box.The DoS Protection tab opens.
- In the DNS DoS Protection area, from thePublisherlist, select the publisher that the BIG-IP system uses to log DNS DoS events.You can specify publishers for other DoS types in the same profile, for example, for SIP or Application DoS Protection.
- ClickCreate.The logging profile is created.
Now you created a logging profile so that the BIG-IP system can log messages about SIP DoS
events and send the log messages to a pool of IPFIX collectors.
Assign this custom DNS DoS logging profile to a
protected object.
Logging DoS/DDoS Events for a Protected Object
Assign a logging profile to a protected object when you want the system to log DoS events.
- On the Main tab, click.
- Click the name of the protected object for which you want to log DoS events.The Properties pane opens on the right.
- In the Network & General area, forLogging Profiles, move the logging profile to assign from the Available list into the Selected list.You can create, and modify log publishers in.
- ClickSave.
The system logs DoS events for the protected object.
You can review DoS event logs at
and select the type of DoS event log to view.Disable DNS DoS
logging
Disable DNS DoS logging when you no longer want
the BIG-IP system to log information about the DNS traffic handled by the resources to
which the logging profile is assigned.
- On the Main tab, click.The Logging Profiles list screen opens.
- Click the name of a profile.
- Disable DNS DoS logging:
- If the profile handles logging for DNS DoS protection only, forDoS Protection, uncheck theEnabledcheck box.
- If the profile handles logging for SIP or Network DoS as well as DNS, in DNS DoS Protection, you can change thePublishertonone.
- ClickUpdate.
The system does not log DNS traffic handled by the resources to which this profile is
assigned.