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BLACKLIST DNS request for known malware domain 8800.org

jhonnywblue
Level 1
Level 1

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? 

3 Replies 3

Marvin Rhoads
Hall of Fame
Hall of Fame

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).

 

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?

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

https://www.lammle.com/post/how-to-find-the-list-of-ip-url-and-dns-entries-in-the-cisco-firepower-feed/

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