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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”.

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