REN-ISAC Alert: DNS Flag Day February 1, 2019 – Ensure Your Institution is Prepared

[Doug Pearson <dodpears () REN-ISAC NET>]

On Friday, February 1, major DNS (Domain Name System) software and
public DNS providers will remove support for workarounds accommodating
authoritative DNS servers that don’t follow published EDNS operational
standards.

Most EDU sites will not be affected; however, institutions using
authoritative servers that don't meet standards may find their IT-based
resources unreachable by large portions of the Internet.

The attached REN-ISAC Alert provides reference to (+) tools that help
you determine if you're affected, (+) considerations for fixing
non-compliant servers, and (+) results of a quick evaluation of 53
higher-ed institutions in one state.

Questions or comments can be referred to soc () ren-isac net.


On behalf of the REN-ISAC Technical Advisory Group and staff,

Doug Pearson
Technical Director, REN-ISAC

Attachment: REN-ISAC_Alert_20190125_DNS_Flag_Day.pdf
Description: