Do you know how many Top Level Domains (TLD) are delegated right now? A lot - 1508! I bet that you intentionally (typing it in a browser) don't even use 5% (75) of the TLDs + some these TLDs are abused a lot (like .tk, .top).
So may be just block 95% TLDs you never use and significantly reduce the attack surface?
For me it seems an easy and viable solution for home office and in the office/DC you may just block the abused TLDs.

How? Obviously if you own DNS, you can do it on DNS and with this post I'm glad to announce a new feature on the ioc2rpz community website (https://ioc2rpz.net) - custom DNS Firewall feeds (based on TLDs).

With this upgrade multiple changes were introduces to the community portal: new RPZ feeds were introduced, RpiDNS is now supported on generic Ubuntu 20.04 x64 server, community whitelist feeds were obsoleted.

New feeds:

• adultfree.ioc2rpz - Adult free content powered by The Block List Project (https://github.com/blocklistproject/Lists).The feed is based on: abuse, drugs, gambling, porn lists.
• covid19.ioc2rpz - Covid-19 malicious domains powered by Covid-19 Cyber Threat Coalition (https://www.cyberthreatcoalition.org) blocklist.
• rescure-domains.ioc2rpz - Curated list of malicious domains powered by Fruxlabs Crack Team (https://rescure.me).
• blocklist-malicious.ioc2rpz - Malicious domains powered by The Block List Project (https://github.com/blocklistproject/Lists).The feed is based on: fraud, malware, phishing, ransomware, scam lists.
• malicious.ioc2rpz - A single feed with malicious domains which superseeds the following feeds: phishing, dns-bh, rescure-domains, blocklist-malicious, covid19.

Obsoleted feeds: whitelist.ioc2rpz, whitelist-raw.ioc2rpz, whitelist-ip.ioc2rpz, whitelist-raw-ip.ioc2rpz.

Right now on the ioc2rpz community you can get 13 security and policy DNS firewall feeds with 10,5M rules free of charge.

What's on your DNS?

If you missed ioc2rpz demo @ BlackHat USA Arsenal this year, you can watch this prerecorded video.

Next week I’ll be presenting my open source projects ioc2rpz and RpiDNS @ BlackHat Arsenal. The session is scheduled on August 5 @ 12pm PDT. https://www.blackhat.com/us-20/arsenal/schedule/#iocrpz-where-threat-intelligence-meets-dns-20685

This year it will be a virtual event and you can attend the arsenal demos and the business hall for free with a business pass: https://www.blackhat.com/us-20/registration.html

Join the session and ask any questions related to the projects and DNS Security in general.

RpiDNS got new features:

• recommended RPZ feeds
  • when you create a new RpiDNS recommended RPZ feeds are checked by default;
• secondary RpiDNS
  • you are able to create a primary RpiDNS and a secondary RpiDNS so the local DNS zone and local RPZs are managed on the primary server and distributed to the secondary.

If you already using RpiDNS in you network and want to use a secondary RpiDNS you may:

• update bind's configuration manually to allow updates to the local zone and local RPZs. After that install a secondary RpiDNS;
• reinstall primary RpiDNS:
  • download DB file;
  • reinstall RpiDNS;
  • replace DB with the old one;
  • toggle all locally created whitelisted and blacklisted indicators;
  • install a secondary RpiDNS.
• if you don't need any data from DB - just reinstall the primary RpiDNS and install a secondary.

Please leave your comments in the telegram channel.