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DNS flag day and DNS inspection

Question asked by Kosin Usuwanthim on Jan 2, 2019
Latest reply on Jan 2, 2019 by Kosin Usuwanthim

DNS flag day 

If there is a problem, the ednscomp tool displays an explanation for each failed test. Failures in these tests are typically caused by:

  • broken DNS software
  • broken firewall configuration

Firewalls must not drop DNS packets with EDNS extensions, including unknown extensions. 


How to prevent this impact on CheckPoint firewall ?