SIMULATION
You are the network security engineer for the Secure-X network. The company has recently detected
Increase of traffic to malware Infected destinations. The Chief Security Officer deduced that some
PCs in the internal networks are infected with malware and communicate with malware infected
destinations.
The CSO has tasked you with enable Botnet traffic filter on the Cisco ASA to detect and deny further
connection attempts from infected PCs to malware destinations. You are also required to test your
configurations by initiating connections through the Cisco ASA and then display and observe the
Real-Time Log Viewer in ASDM.
To successfully complete this activity, you must perform the following tasks:
* Download the dynamic database and enable use of it.
• Enable the ASA to download of the dynamic database
• Enable the ASA to download of the dynamic database.
• Enable DNS snooping for existing DNS inspection service policy rules..
• Enable Botnet Traffic Filter classification on the outside interface for All Traffic.
• Configure the Botnet Traffic Filter to drop blacklisted traffic on the outside interface. Use the
default Threat Level settings
NOTE: The database files are stored in running memory; they are not stored in flash memory.
NOTE: DNS is enabled on the inside interface and set to the HQ-SRV (10.10.3.20).
NOTE: Not all ASDM screens are active for this exercise.
• Verify that the ASA indeed drops traffic to blacklisted destinations by doing the following:
• From the Employee PC, navigate to http://www.google.com to make sure that access to the
Internet is working.
• From the Employee PC, navigate to http://bot-sparta.no-ip.org. This destination is classified as
malware destination by the Cisco SIO database.
• From the Employee PC, navigate to http://superzarabotok-gid.ru/. This destination is classified as
malware destination by the Cisco SIO database.
• From Admin PC, launch ASDM to display and observe the Real-Time Log Viewer.
You have completed this exercise when you have configured and successfully tested Botnet traffic
filter on the Cisco ASA.
Answer: See the explanation
Explanation:
See the explanation for detailed answer to this sim question.
First, click on both boxes on the Botnet Database as shown below and hit apply:
Click Yes to send the commands when prompted.
Then, click on the box on the DNS Snooping page as shown below and hit apply:
Click Yes to send the commands when prompted.
Then, click on the box on the Traffic Settings tab as shown:
At which point this pop-up box will appear when you click on the Add button:
Click OK. Then Apply. Then Send when prompted.
Then verify that all is working according to the instructions given in the question.
