A list of DNS servers is presented to the user. For each server an enable/disable flag controls if processing is due. Upon running the main backtask, each (enabled) server will be questioned about a URL. Response is in the log file.
The application currently uses Lua 5.4.3, wxWidgets 3.1.5, wxLua 3.1.0.0 and luasocket 3.0-rc1.
Download nameservers.csv from https://public-dns.info/.
Run this script to have the csv file converted to a Lua table, which can be the new servers' list.
There's no settings file, since the script is truly little, thus modify the source to suit your needs.
A list of country codes, divided by continent, can be used to filter out rows of no interest.
After loading a test file.
After testing some servers.
This program is not intended for speed benchmarcking, but rather to question servers.
Eventually, load all names servers and enable each in list, then enable the backtask and cycle 3 or 4 times the sequence:
purge the failing servers and reset the completion status will give you a list of trustful servers.
File user.lua is a container for plugin functions, it can be modified and reloaded at run time.
File data/samplehosts.lua holds a table of sample hosts that are assigned circularly to each new server, thus to make all servers target the same host just provide only that name in the list.
For the time being DNS servers are questioned only with a TYPE 1 <hostname>. Response and analisys of the response are recorded in the log log/protocol.log.
The status bar shows counters for: Total Servers, Enabled Servers, Responding Addresses, Not Responding Addresses.
When purging servers, a server with 2 addresses, of which 1 is not responding, will be removed, either way.
...
05815: ----- [ Response 2983 ] ----- 00000000 0B A7 81 80 00 01 00 03 00 00 00 00 0A 73 61 74 .?.?.........sat 00000010 65 6C 6C 69 74 65 73 03 70 72 6F 00 00 01 00 01 ellites.pro..... 00000020 C0 0C 00 01 00 01 00 00 01 2C 00 04 68 1A 03 0E ?........,..h... 00000030 C0 0C 00 01 00 01 00 00 01 2C 00 04 AC 43 44 B4 ?........,..?CD? 00000040 C0 0C 00 01 00 01 00 00 01 2C 00 04 68 1A 02 0E ?........,..h... 05816: Recursion desired = 1 05817: Truncation flag = 0 05818: Authoritative answer flag = 0 05819: Opcode = 0 05820: Query/Response flag = 1 05821: Return code = 0 05822: Recursion available = 1 05823: Questions count = 1 05824: Answers count = 3 05825: Authoritative servers count = 0 05826: Additional records count = 0 05827: URL requested = satellites.pro 05828: Type of query (req) = 1 05829: Class (protocol) (req) = 1 05830: 05831: Pointer value = 0x0c 05832: Type of query (ans) = 1 05833: Class (protocol) (ans) = 1 05834: Time to live = 300 05835: Record lenght = 4 05836: Assigned Ip address = 104.26.3.14 05837: Pointer value = 0x0c 05838: Type of query (ans) = 1 05839: Class (protocol) (ans) = 1 05840: Time to live = 300 05841: Record lenght = 4 05842: Assigned Ip address = 172.67.68.180 05843: Pointer value = 0x0c 05844: Type of query (ans) = 1 05845: Class (protocol) (ans) = 1 05846: Time to live = 300 05847: Record lenght = 4 05848: Assigned Ip address = 104.26.2.14 05849: ...
- Added extra check in convert.lua.
- Added counters in the status bar.
- Load set of functions in external file as menu.
- Fuzzy toggle the enable flag for each server in list.
- Scramble servers' list.
- Minimized grid resfresh calls.
- Test for valid IP4 address.
- Modified the window's ini file to support control over the font to use.
- Added deletion of selected servers.
- Added possibility to purge from the servers' list either the verified or the failing ones.
The author can be reached at decuant@gmail.com
The standard MIT license applies.