CPE Grounding

A discussion which comes up over and over in the WISP space is grounding and proper installation of customer CPE. The folks at perfect-10 (https://www.perfect-10.tv/) were a vendor at #WISPAPALOOZA2018.  One of the best things I have seen them in a long time is the below photo they created. This is a great illustration of how a proper CPE goes.

Updating your Bind DNS for latest trust anchors

A little Background on the rollover

From: https://www.icann.org/resources/pages/ksk-rollover/#overview
ICANN
 is planning to perform a Root Zone Domain Name System Security Extensions (DNSSEC) KSK rollover as required in the Root Zone KSK Operator DNSSEC Practice Statement [TXT, 99 KB].

Rolling the KSK means generating a new cryptographic public and private key pair and distributing the new public component to parties who operate validating resolvers, including: Internet Service Providers; enterprise network administrators and other Domain Name System (DNS) resolver operators; DNS resolver software developers; system integrators; and hardware and software distributors who install or ship the root’s “trust anchor.” The KSK is used to cryptographically sign the Zone Signing Key (ZSK), which is used by the Root Zone Maintainer to DNSSEC-sign the root zone of the Internet’s DNS.

Maintaining an up-to-date KSK is essential to ensuring DNSSEC-validating DNS resolvers continue to function following the rollover. Failure to have the current root zone KSK will mean that DNSSEC-validating DNS resolvers will be unable to resolve any DNS queries.

If you are running bind the quickest way to check is this:

If your configuration shows dnssec-validation yes;, you must change it to dnssec-validation auto;and restart your server before taking the steps below. This is in your named.conf