cannot get node dns program to work externally

From	Aaron Gray <aaronngray.lists@gmail.com>
Newsgroups	linux.debian.user
Subject	cannot get node dns program to work externally
Date	2017-08-06 03:50 +0200
Message-ID	<ubiRA-4c2-5@gated-at.bofh.it> (permalink)
Organization	linux.* mail to news gateway

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Hi,

I have a node.js based dns program on port 53 and have it working as
localhost on debian 8.5 but I cannot seem to get it to work externally
despite getting the firewall rules right having tested them with Bind9.

-A INPUT -p udp --dport 53 --sport 1024:65535 -j ACCEPT
-A OUTPUT -p udp --sport 53 --dport 1024:65535 -j ACCEPT
-A OUTPUT -p udp --sport 53 --dport 1024:65535 -j ACCEPT
-A INPUT -p udp --dport 53 --sport 1024:65535 -j ACCEPT

-A OUTPUT -p udp --sport 53 --dport 53 -j ACCEPT
-A INPUT -p udp --dport 53 --sport 53 -j ACCEPT


Also I have done :-

    setcap cap_net_bind_service=+ep /usr/bin/nodejs

to allow node to work with ports less than 1024.

I have my node dns program working on port 53 UDP with dig from localhost
but Basically not externally on the local network and cannot work out why ?

I have mainly been using :-

    https://github.com/tjfontaine/node-dns/blob/master/examples/forwarder.js

for testing.

Its probably something obvious hope someone can help !

-- 
Aaron Gray

Independent Open Source Software Engineer, Computer Language Researcher,
Information Theorist, and amateur computer scientist.

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Thread

cannot get node dns program to work externally Aaron Gray <aaronngray.lists@gmail.com> - 2017-08-06 03:50 +0200
  Re: cannot get node dns program to work externally Lck Ras <likcoras@riseup.net> - 2017-08-06 04:40 +0200
  Re: [nodejs] Re: cannot get node dns program to work externally Aaron Gray <aaronngray.lists@gmail.com> - 2017-08-20 23:40 +0200

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