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How can I clear a NoMachine client’s cache of dynamically discovered LAN servers?
On my home network I have a collection of CentOS 7.7 and Windows 10 computers that all act as both clients and servers. Initially I let my computers dynamically discover each other, but I found that sometimes there’d be a delay before a dynamically discovered server would appear in a NoMachine client window. Therefore I’ve decided to statically configure all the server connections on each of my clients (I only have a few PCs at home, so this didn’t take long).
At the same time in each computer’s Server Preferences->Services I also unchecked “Advertise this computer on the local network”. Therefore I shouldn’t have any more dynamically discovered servers. However (now that I’ve statically defined connections for all of my servers), I now have two connections listed for each server (the manually created connection and the cached dynamic LAN connection).
On my CentOS 7 client I tried clearing out the “~/.nx/cache” folder, but this didn’t help.
According to https://forums.nomachine.com/topic/cant-delete-old-session#post-23807 “Old servers discovered in LAN could stay in the cache for a few hours before being completely removed”, but in my testing they’ve stayed for for days (and counting).
[Software versions]
NoMachine 6.9.2 free version
Windows Client and Server = Windows 10 Pro x64 Version 1909
Linux Client and Server = CentOS 7.7.1908 with the default Gnome 28We weren’t able to reproduce such problem.
At the same time in each computer’s Server Preferences->Services I also unchecked “Advertise this computer on the local network”.
Did you restart nxserver after after making changes? It’s needed to take effect.
Yes, I restarted nxserver after making the changes. What protocol/port does nxserver use to advertise its presence? For example TCP or UDP port 4000? With that info I can take a packet capture to check if my servers are still advertising their presence.
NX is using MDNS protocol for advertise its presence to other NoMachine computers, visible for example in third party tool – Wireshark.
I’m sorry, this was my mistake. I thought I restarted all the servers, but when I went back and checked I had forgotten to restart a couple of them. I had assumed it was all of my servers re-populating my connection list when in fact it was just these two. After I restarted these two servers I no longer have any dynamically discovered servers in my list. I did use Wireshark to check out MDNS traffic on my network and discovered I have several devices using it, but no more NoMachine servers advertising themselves.
So sorry for the noise/misinformation, but thanks for the help.
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