Hi Chris
On Mon, May 11, 2020 at 11:34:31AM +0100, Chris Bell via GLLUG wrote:
> On Monday, 11 May 2020 11:07:55 BST Marco van Beek via GLLUG wrote:
>>> Openvpn should not be grabbing port 53 unless you are using a custom
>>> config for it. The default setup for openvpn is UDP 1194. Some people
>>> do use port 53 UDP for VPn because it allows you to tunnel through,
>>> but you have just seen what havoc that can bring.
> Hello Marco,
> Thanks for the reply. Yes, I had configured openvpn to use UDP port
> 1194 and was trying to get it working, with port 1194 enabled
> through the firewall. Then I re-booted and everything stopped, with
> dnsmasq complaining that port 53 was already taken so would not
> start, until I removed openvpn. I did not find any other reason why
> there was a problem, and I would like to try again with openvpn if I
> can still get dnsmasq to run.
<snip>
To see what is listening on port 53 you can run something like:
sudo netstat -vnutlp | grep ':53[[:blank:]]'
It maybe that something else is listening on that port on one or more
of the network interfaces.
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