Fall 2022 DNS Webinars

Aliasing in the DNS and HTTPS/SCVB RRs

It would be very handy to be able to establish an alias for an apex record in the DNS. Unfortunately, this is not a standardized feature of the DNS, although some operators have created proprietary features with this effect.

The new HTTPS and Service-binding (SCVB) resource records on the brink of standardization in the IETF are supposed to “solve” this long-standing interoperability problem. In this webinar, Carsten explains:

  • What is a CNAME?
  • What is an alias?
  • What is the problem with CNAMEs at the zone apex?
  • How is this new HTTPS/SCVB system supposed to work?
  • What do we know about implementation status?

**A recording of this webinar can be found on ISC’s Youtube channel. **

Memory management in BIND 9

Users frequently ask us how to optimize BIND 9 memory usage, for the best performance with a “safe” amount of overhead. This is an impossible question to answer! The truth is, every installation is different and the answers are platform-specific. So how can you measure memory usage on your platform, and how can you adjust BIND memory usage if you need to? Find out at our December webinar!

  • How should you measure BIND 9 memory usage (Authoritative and Resolver)?
  • Why does BIND 9.16+ use more memory than older versions?
  • What is jemalloc and how does it help with BIND 9 memory usage?
  • What BIND features can you adjust to change BIND’s memory usage?

A Recording of this webinar can be found on ISC’s Youtube channel. Slides are here

Speaker information:

Carsten Strotmann has more than 20 years of professional experience working in open source networking. He has delivered many webinars and training classes on open source solutions and DNS/DHCP/IPv6/Linux/Unix security. He also is the author of various articles on IT security topics in computer magazines.

Recent Posts

What's New from ISC

Changes to ISC Software Signing

At the end of 2022, we are introducing some changes to the tools and procedures we use for signing the source code releases of our software, to make the whole process simpler and more robust.

Read post
Previous post: DNS Wildcards Webinar