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Great suggestion Tom. Thanks to it I could troubleshoot it better. Reconfigured all VCN security list for change ssh to 4000 , reconfigured the sshd and nothing. No connection after and same “no route to host” error displayed in SSH. Tried your iptables commands but get too much errors. Search a little bit more and found this : https://www.reddit.com/r/oraclecloud/comments/r8lkf7/a_quick_tips_to_people_who_are_having_issue/
which give this little command :
sudo iptables -I INPUT -j ACCEPT
and voilá. It worked. The only problem is that it seems it didn’t kept the iptables when reboot the VM even after issue the:
sudo suiptables-save > /etc/iptables/rules.v4 exit. But I’ll troubleshoot this later. Seems something Ubuntu specific. By at least I can connect now.
Tom, I don’t know what happened, but seems that my morning answer didn’t arrive. I’m connecting to a public address, which I blurred on propose (Left corner). Starts with 144…. I’m running Kubuntu on my laptop and Ubuntu +KDE on the OCI VM. Both 22.04. Is it possible to get a link to the 7.X version, I would like to test with that because it was working with it. And again I can SSH and RDP to that address without any problem as you can see by the ss.
Hi Tom, thanks for answering. So ,
1- How did you do the NoMachine update procedure ? Was it with automatic updates or manual?
First I did a regular linux update (sudo apt update) , then the regular NoMachine update through the UI. After updates I lost the access.
2-Did you have any NoMachine custom settings set for version 7?
No, just the regular Vanilla settings.
3- When you write “delete everything and installed in as a fresh install” did you delete the entire /usr/NX/ directory?
Yes, found it in a post somewhere here. Complete uninstall and directories removal.
4- Did you change anything in Ubuntu settings on Oracle Cloud after NoMachine update?
No, no changes, just the regular system updates (22.04)
5- What is the output after executing the command: sudo /usr/NX/bin/nxserver –status ?
NX> 111 New connections to NoMachine server are enabled.
NX> 161 Enabled service: nxserver.
NX> 161 Enabled service: nxnode.
NX> 161 Enabled service: nxd.
6- RDP is remote desktop protocol. I installed an RDP server on the VM, which I can enable in case of problems like this. In fact that was the first remote access solution I had before I had known NoMachine. I’m using KRDC on my laptop to access the VM. [Removed ] works fine too, but as I use KDE I kept just KRDC as it works.
I attached a prtscrn of the remote access