dnsscan – DNS Open Recursive Resolver Scanner/Scanning Tool

Use Netsparker


Dnsscan is a tool for finger printing open recursive resolvers. It runs in conjuction with a small server that knows how to reply to queries forwarded from probed resolvers. For example, assume that you have delegated osd.example.org:

On 10.0.0.1, you would run:

On the client that initiates the DNS probes, you would run

Progress of the dnsscan tool can be monitored via a web browser on port 8080. If the tool crashes or gets terminated, it can be restarted from the checkpoint file.

Both of the tools log their output into files, the output can be inspected with the dnsreader tool.

If this does not mean anything to you, you should probably not use this tool. This tool has been released to support repeatable research, some of the results obtained with tools such as these have been published at NDSS’08.

Notice

Use of dnsscan across a large network block requires coordination with your network provider. In all likelihood, you will receive (and must manage) abuse complaints due to the volume of DNS queries. You should consult RFC 1262 for suggestions on how to conduct such Internet-wide studies.

You can download dnsscan v1.0 here:

dnsscan-1.0.tar.gz

Or read more here.

Posted in: Hacking Tools, Networking Hacking

, , ,


Latest Posts:


Insecure software versions are a problem Web Security Stats Show XSS & Outdated Software Are Major Problems
Netsparker just published some anonymized Web Security Stats about the security vulnerabilities their online solution identified on their users’ web applications and web services during the last 3 years.
CTFR - Abuse Certificate Transparency Logs For HTTPS Subdomains CTFR – Abuse Certificate Transparency Logs For HTTPS Subdomains
CTFR is a Python-based tool to Abuse Certificate Transparency Logs to get subdomains from a HTTPS website in a few seconds.
testssl.sh - Test SSL Security Including Ciphers, Protocols & Detect Flaws testssl.sh – Test SSL Security Including Ciphers, Protocols & Detect Flaws
testssl.sh is a free command line tool to test SSL security, it checks a server's service on any port for the support of TLS/SSL ciphers, protocols as well as recent cryptographic flaws and more.
Four Year Old libSSH Bug Leaves Servers Wide Open Four Year Old libssh Bug Leaves Servers Wide Open
A fairly serious 4-year old libssh bug has left servers vulnerable to remote compromise, fortunately, the attack surface isn't that big as neither OpenSSH or the GitHub implementation are affected.
CHIPSEC - Platform Security Assessment Framework CHIPSEC – Platform Security Assessment Framework For Firmware Hacking
CHIPSEC is a platform security assessment framework for PCs including hardware, system firmware (BIOS/UEFI), and platform components for firmware hacking.
How To Recover When Your Website Got Hacked How To Recover When Your Website Got Hacked
The array of easily available Hacking Tools out there now is astounding, combined with self-propagating malware, people often come to me when their website got hacked and they don't know what to do, or even where to start.


Comments are closed.