Hi Daniel,
Thanks for the reply!
I use Zentyal as the Authoritative DNS Server for my domain.
The server is placed in the DMZ, with a private IP address.
In UTM I have two policies created:
Inbound: Port forwarding WAN IP to DMZ IP TCP+UDP/53
Outgoing: TCP+UDP/53, TCP+UDP/123, ICMP8, ICMP30, TCP43, 80,443.
Do we still need an open port for everything to work properly?
The update worked without problems after I opened all ports in UTM for both Inbound and Outcoming.
Is it necessary to upgrade the Ubuntu version (from version 20.04.6 LTS to 22.04.3 LTS)?
Using username "ns1admin".
ns1admin@10.0.10.10's password:
Welcome to Ubuntu 20.04.6 LTS (GNU/Linux 5.4.0-162-generic x86_64)
* Documentation: https://help.ubuntu.com
* Management: https://landscape.canonical.com
* Support: https://ubuntu.com/advantage
You can access the Zentyal Web Interface at:
* https://your_server_ip:8443
Expanded Security Maintenance for Applications is not enabled.
0 updates can be applied immediately.
5 additional security updates can be applied with ESM Apps.
Learn more about enabling ESM Apps service at https://ubuntu.com/esm
New release '22.04.3 LTS' available.
Run 'do-release-upgrade' to upgrade to it.
Last login: Thu Sep 14 13:00:43 2023 from 192.168.168.151
ns1admin@ns1:~$
Thanks in advance for your help!
Best regards,
Gabriel