**Domain Name System Security Extensions (DNSSEC)** is a set of IETF specifications for digitally signed DNS.

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DNSCrypt-proxy: This certificate looks valid

I have just installed dnscrypt-proxy and dnsmasq with DNSSEC but I get a strange message in the logfile from dnscrypt-proxy. [INFO] + DNS Security Extensions are supported [INFO] - [dnscrypt.eu-dk] ...
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How to acquire DNSSEC root trust anchor from IANA?

I want to establish trust in a DNSSEC record. I found, that it can be done $ dig +sigchase +trusted-key=./root.key @8.8.8.8 eesti.ee root.key could be obtained with $ dig . DNSKEY @8.8.8.8 | grep ...
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29 views

Can you force your PC or device to use only DNSSec-verified lookup results?

Okay, I'll admit something first-off: I don't really understand some of the practical aspects of how DNSSec protections work very well.(Even after reading resources like this.) Well, I certainly ...
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85 views

Is DNSSEC really useless if TLS is properly configured?

I was reading this article http://sockpuppet.org/blog/2015/01/15/against-dnssec/ and this line caught my eye, "With TLS properly configured, DNSSEC adds nothing." My gut reaction was to disagree, but ...
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60 views

How does DNSSEC work? [closed]

How does my OS or browser knows to check for DNSSEC? How does the verification process works? Do I need a key from Comodo/Verisign? Do I need to install something to my hosting? What happens in men in ...
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Is running a DNSSEC enabled DNS service as hard as running a CA?

I think we all know that running a CA is really hard to get right. Now there's a "new" system that uses digital signatures to associate data with names: DNSSEC. DNSSEC signs the DNS records and ...
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Does DNSSEC still have the “enumerate all names in zone” problem?

According to Wikipedia: DNSSEC introduces the ability for a hostile party to enumerate all the names in a zone by following the NSEC chain. NSEC RRs assert which names do not exist in a zone ...
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Non-validating DNSSEC aware client security implications

I understood that Windows 7 and newer Windows clients are DNSSEC aware, but that they are non-validating. That means that they are not performing any DNSSEC validation, but that they can require the ...
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69 views

What if a resolver doesn't support DNSSEC?

I've been reading about DNSSEC lately and had a question about DNS-Resolvers installed elsewhere on the internet. If a client is using a DNS-Resolver that doesn't support DNSSEC will it fall back to ...
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144 views

Vulnerability NTP:Traffic amplification in clrtrap feature of ntpd affect or not affect to Cisco device?

I am using CCSVM tool SCAN for Network devices (Cisco). Below you can find the scan result: Title vulnerability: NTP: Traffic amplification in clrtrap feature of ntpd Solution fix: Disable NTP ...
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26 views

Why do DNSKEY have a RRSIG for themselves?

Looking at all examlpes of DNSSEC, you see that the zone includes not only the DNSKEY , but also a RRSIG of the DNSKEY created with that same DNSKEY? Why is this? Why publish a self-signed RRSIG? What ...
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DNSSEC Why are RRSIG return in the Answer not Additional section

Looking at Wireshark traces of DNSSEC responses, I see that the RRSIG is returned in the Answer section, even though it wasn't part of the query. Why isn't it returned in the Additional Section, ...
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30 views

Shouldn't DNSCurve be parallel to DNSSEC at root level for diversity?

As per the answer at If DNSSEC is so questionable, why is it ahead of DNSCurve in adoption?, it's been determined that one of the reasons that DNSCurve is behind DNSSEC is due to the nature of the ...
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2answers
268 views

What types of attacks and abuse does DNSSEC protect against?

I've read lots of different articles on what DNSSEC is and that it provides authentication for DNS. What I unfortunately haven't seen is a good description of the types of attacks and abuse that ...
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Why can't we bypass DNSSEC

DNSSEC is a suite of security extensions to enhance DNS security. (e.g.: avoid cache poisoning) However I was wondering how does the resolver know that the next NS will use DNSSEC? E.g.: Someone ...
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1answer
103 views

Does any DNS Recursive resolver accept a “DNSSEC-only” option under DNSCurve?

I want to use DNSCurve (for privacy) to a trusted DNSSec resolver (for integrity), and want to ensure that I can tell a recursive resolver (like 8.8.8.8, or OpenDNS) that I only want DNSSec queries. ...
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126 views

Does using DNSSEC in parallel with an anonymisation network decrease your privacy?

When using an anonymous communication network like Tor, to ensure privacy you must route your DNS traffic through the system even if your computer always uses DNSSEC for DNS lookups, would this be ...
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110 views

Is there an HSTS equivalent for DNSSec?

Is there any way to set a DNSSec-always policy similar to how HSTS commands Web Browsers to always use HTTPS? This would mitigate a DNSSec-strip attack (similar to SSLStrip) I'm also unclear if this ...
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1answer
85 views

I just deployed DNSSec. Is there any benefit in DANE for a CA- issued Cert?

I just deployed DNSSec at https://val-id.com and https://getvalid.com Since DNSSec is a requirement of DANE, and I have a CA-based certificate, can I show my support for DANE-based deployments by ...
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45 views

In DNSSec, are Delegation Signer Records always SHA-1?

I'm creating a RSA/SHA-512 Zone Signing Key and Key Signing Key at Dynect Managed DNS (corporate offering) The Delegation Signer Record that was created is SHA1. Should I be concerned about this?
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114 views

When using https but not DNSSEC, under what situation, a client is vulnerable?

So DNSSEC is to ensure that returned IP address is not poisoned. And https is to verify the remote server. My question is that when protected by https, under what circumstances, a client is ...
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204 views

How to get started with DNSSEC?

I have been assigned the task of improving security of a specific service. After some analysis of the requirements we have come to the conclusion, that a certain aspect of the specified requirements ...
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180 views

DNSSEC: Does the algorithm of the ZSK need to match the algorithm of the KSK?

I am in the process of setting up DNSSEC for my domains. Initially I was going to go with algorithm 13 (ECDSA-P256-SHA256), but it seems that dyn.com doesn't allow me to add a DS record with an ...
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325 views

DNSSec vs SSL and IPsec

Theoretically, DNS cache poisoning shouldn't matter,because everything important is protected by SSL and IPsec. So why DNSSec was developed? Aren't the first two protocols sufficient?
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Security of certificate when using DNSSEC

When setting up secure server, it is suggested not to use self-signed certs and instead to be signed by a CA. Of course, post-Snowden we now know that there may be problems with CA's that could allow ...
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845 views

Storing SSL certificates in DNS records

Why not get rid of all certificate authorities and all the special kind of SSL certificates there are (extended validation etc. etc.) and instead just require anyone who wanted SSL to write their own ...
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Is the Google address being spoofed on my computer?

I might use some inappropriate terminology because I am no expert, but please feel free to correct me where it is needed. I believe that a process has modified some network file on my computer, like ...
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What's stopping DANE? [closed]

As I understand it, DANE (RFC 6698) is a promising candidate for addressing issues with current TLS Trust Anchors (i.e. Trust Anchors). My attempt at explaining the issue: Currently, CAs are ...
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1answer
103 views

Why is it dangerous for attackers to be able to enumerate all subdomains of a given domain?

While it seems like a bad idea for attackers to be able to use DNSSEC to enumerate subdomains, I cannot think of a specific attack that this information enables, which would not be doable without this ...
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1answer
108 views

Email, Certificates and DANE [closed]

Does DANE offer the ability to provide certificates for services? Or is it just hosts? How does one specify a mail server with DANE? If my email is jd@foo.com but mail.bar.com is the email server, ...
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67 views

Does DNSSEC provide signed statements that a certain domain does NOT yet support DNSSEC? If not, why not?

In my security class with David Wagner, we talked about some of the reasons why DNSSEC is not widely adopted right now. One of the reasons was that for backward compatibility reasons, clients need to ...
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542 views

Is DNSSEC immune to stripping signatures?

In my opinion, it should be possible to forge DNS reply so it doesn't include DS/RRSIG/... parts for any request, thus bypassing DNSSEC validation of resolved domain. Is DNSSEC system immune to this ...
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465 views

DNSSEC signing algorithms

Virtualmin supports a flurry of algorithms for DNSSEC: RSASHA1, RSASHA256, RSAMD5, DSA, DH, HMAC-MD5, NSEC3RSASHA1, NSEC3DSA. If I understand correctly, there's Proof of Concept available for SHA1 ...
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338 views

Why does DNSSEC have a ridiculous keysigning ceremony?

Every three months, 7 people fly to a secure ICANN server building and go through an elaborate ceremony to generate a new signing key for DNSSEC. The entire affair appears to be based on politics and ...
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512 views

How does a client know that a DNS zone is DNSSEC protected?

Recently, I've been reading about DNSSEC and how it works. I found other questions and some very interesting answers on this and other websites related to this matter. However, I have a question to ...
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If DNSSEC is so questionable, why is it ahead of DNSCurve in adoption?

Looking at all the people who question the viability of DNSSEC, it's no wonder that the adoption rates are so poor. However, what about DNSCurve? It supposedly fixes all the DNS security and privacy ...
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3answers
565 views

Why is RFC4255 (SSHFP) not used for https?

I had this idea a few hours ago, but of course it already exists and there is even an RFC... Why don't we publish the fingerprint for the SSL/TLS certificate via DNS? We need DNSSEC to make sure the ...
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How to verify DNSKEY by using its corresponding DS

A DNSKEY on a name server can be verified by using it DS stored on its parental name server. According to RFC4034: The DS record refers to a DNSKEY RR by including a digest of that DNSKEY RR. The ...
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If DNSSEC is so useful, why is its deployment non-existent for top domains?

I've read several papers on DNSSEC, and it appears that it does prevent many attack classes, and the only two possible downsides is that its deployment is hard (DNSSEC is complex), and that you can ...
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1answer
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TESTING DNSSec from command line

I am doing a research project on DNSSec. I have a SOA, Stub resolver and a client as well as a attack machine. My question is this. On a Linux Client is there a way test for validity of record ...
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452 views

Can NSEC domain enumeration happen for zones with wildcard records?

In DNSSEC, NSEC records are used to provide proof of nonexistence. The trouble is that these records provide pointers to existent domain names (the closest known domain in either direction) ...
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Does dnssec protect against malicious registrars?

With the recent conspiracy theories around the registrar MarkMonitor Inc., the question arises, if DNSSEC protects against a registrar going malicious (or being attacked). This is especially ...
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291 views

Kaminsky Bug Exploitation

I am trying to exploit the Kaminsky bug for a school assignment. The specific version of the bug that I want to exploit is sending a forged packet with false information about www.domain.com so that ...
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4answers
4k views

DNSSec (Comcast) vs DNSCurve (OpenDNS)

I was previously using OpenDNS on my internal network. I found out today that Comcast has switched over to DNSSec: Comcast DNSSec. I've done a little research on DNSSec and its benefits. I ...
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Does Tor Hidden Service Protocol provide more threat protection than a standard HTTPS session?

DuckDuckGo is a search engine that has a Tor Exit Enclave and hidden service. This site is focused on the safe, secure searching of its users. Since DNS is not used in Tor, it appears that HTTPS is ...
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How can I tell if a DNSSec zone is protected using NSEC3 (versus NSEC)

This answer describes how DNSSec might permit "Zone walking"... where a bad guy can extract all the DNS records from a DNSSec enabled zone. NSEC3 is an update that prevents this. (See bottom of this ...
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How does DNSSec work? Are there known limitations or issues?

Based on information from this site, DNSSec is needed to protect us from a number of DNS and SSL / TLS hacks, including: DNS spoofing, especially on wifi or shared medium Registrars that abuse their ...
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DNS zone transfer attack

Hello Guys! Can anyone explain what is DNS zone transfer or give any link, paper? I have already googled, but could not find anything meaningful?
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Protecting yourself against DNS spoofing?

Are there any things which the user can do, on their own machine, to protect against DNS spoofing? I was just thinking when I was at the airport last and I wanted to check my email I used a hotspot ...
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237 views

How exactly would SOPA-style DNS blocking threaten the security of the Internet?

A point that keeps getting mentioned in the SOPA debate is that the DNS blocking it prescribes will cause security problems. Can somebody explain in simple terms just exactly how SOPA threatens ...