Home ›

Paranoid Penguin - DNS Cache Poisoning, Part II: DNSSEC Validation

Issue 206

From Issue #206
June 2011

Aug 31, 2011  By Mick Bauer
 in
Configure your DNS server to check zone signatures using DNSSEC.
Conclusion

And with that, your nameserver is successfully validating signed zone data! For now, I wish you thanks and goodbye. As I seem to do every couple years, I'm going to take a hiatus for a few months. I do plan on resuming the Paranoid Penguin after that, however, refreshed and renewed for your reading pleasure.

Until then, take care of yourself and especially your Linux systems!

Resources

DNSSEC—the DNS Security Extensions—Protocol Home Page: www.dnssec.net

Alan Clegg's “DNSSEC—Living and Loving Life after Kaminsky; Or: How I overcame my fear and signed my zones.” Presentation to REN-ISAC on 10-30-2008: www.ren-isac.net/techburst/hardcopy/ren-isac_techburst_20081030_clegg_dnssec.pdf

Geoff Huston's “A Fundamental Look at DNSSEC, Deployment, and DNS Security Extensions”: www.circleid.com/posts/dnssec_deployment_and_dns_security_extensions

Ubuntu 10.10 Server Guide: “Chapter 7. Domain Name System (DNS)”: https://help.ubuntu.com/10.10/serverguide/C/dns.html

BIND 9.7 Administrator's Reference Manual (ARM): ftp.isc.org/isc/bind9/cur/9.7/doc/arm/Bv9ARM.pdf

Tony Finch's “How to set up DNSSEC validation with BIND-9.7”: fanf.livejournal.com/107310.html

Mick Bauer (darth.elmo@wiremonkeys.org) is Network Security Architect for one of the US's largest banks. He is the author of the O'Reilly book Linux Server Security, 2nd edition (formerly called Building Secure Servers With Linux), an occasional presenter at information security conferences and composer of the “Network Engineering Polka”.

______________________

Webcast
More Resources
How to Build an Optimal Hadoop Cluster to Store and Maintain Unlimited Amounts of Data Using Microservers

Realizing the promise of Apache® Hadoop® requires the effective deployment of compute, memory, storage and networking to achieve optimal results. With its flexibility and multitude of options, it is easy to over or under provision the server infrastructure, resulting in poor performance and high TCO. Join us for an in depth, technical discussion with industry experts from leading Hadoop and server companies who will provide insights into the key considerations for designing and deploying an optimal Hadoop cluster.

Learn More

Sponsored by AMD

White Paper
More Resources
Red Hat White Paper: Using an Open Source Framework to Catch the Bad Guy

Built-in forensics, incident response, and security with Red Hat Enterprise Linux 6

Every security policy provides guidance and requirements for ensuring adequate protection of information and data, as well as high-level technical and administrative security requirements for a system in a given environment. Traditionally, providing security for a system focuses on the confidentiality of the information on it. However, protecting the data integrity and system and data availability is just as important. For example, when processing United States intelligence information, there are three attributes that require protection: confidentiality, integrity, and availability.

Learn more about catching the bad guy in this free white paper.

Learn More

Sponsored by DLT Solutions