07-23-2019 10:10 PM - edited 02-21-2020 09:20 AM
Hello,
I have configured Firepower Management Center with the 2019-06-30 snort version file. I am trying to generate an alert when I type "nslookup 8800.org" on my laptop. Right now, it is not generating alert for the same. I tried to look for the "BLACKLIST DNS" rules under the IPS policy but I couldn't find any rules related to BLACKLIST DNS. I also tried to edit the Global Blacklist under the Default DNS Policy, but I couldn't make any changes to the list. Whitelist and Blacklist both are greyed out. Upon clicking the refresh icon, I don't see any list or IPs. Do I need any special license for this? I currently have Control and Protection licenses.
Can anyone please help me in putting me to the right direction?
07-23-2019 10:47 PM
The Global Blacklist for URL is part of the Cisco-provided Security Intelligence feeds.
First check that your feeds are active: Object > Object Management > Security Intelligence > DNS List and Feeds. Verify that the "Cisco-DNS-and_URL-Intelligence-Feed" shows an update (default is every 2 hours).
Then check your Access Control Policy, Security Intelligence tab. Make sure that you have included "Global Blacklist for URL" in the Blacklist section (rightmost column).
07-24-2019 10:59 AM
It looks like my feeds are not active. Our FMC is not connected to the Internet. So, I believe feed update won't be an option for us. But I do see that the feed update is set to "update every 2 hours".
I checked the Access Control Policy, Security Intelligence tab and I do see that it has both White and Black list in the right column.
Another thing is I cannot view the list or feed. Do you know why?
07-24-2019 11:34 AM
Yes the SI feed update does require Internet connectivity.
You can check the contents of your feeds (fresh or stale :) ) by parsing through the actual files on your FMC. More details here:
https://community.cisco.com/t5/firepower/how-to-get-cisco-security-intelligence-feeds/td-p/3740062
Discover and save your favorite ideas. Come back to expert answers, step-by-step guides, recent topics, and more.
New here? Get started with these tips. How to use Community New member guide