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:
osd.example.org. 900 IN [...]
This program retrieves version information for the nameservers of a domain and produces a report that describes possible vulnerabilities of each.
Vulnerability information is configurable through a configuration file; the default is porkbind.conf. Each nameserver is tested for recursive queries and zone transfers. The code is parallelized with libpthread.
Changes for v1.3
Wrote in-a-bind shell script that [...]
