CentOS

I am suggesting that you login to the windows system via the local console and examine all the logs for errors.

Use the local console for your windows servers to login and check their status. By default libvirt starts a vnc server for each VM and you can see which one is in use by running `virsh vncdisplay $vm`

Start by updating from 7.4 which went out of support as soon as 7.5 was released in 2018-04-10. Your system is more than 5 years out of date and has numerous security problems that are known and abused by malicious actors.

Fix your DNS resolution. Start by checking /etc/resolv.conf syntax.

As far as I understand that text, it's not an error, it's telling you that it only works if SMB1 (totally insecure) is enabled on your windows servers..

He addressed whoever's post by removing reference to an ipipv6 tunnel and using an ipip one

ocserver is in EPEL: Summary : OpenConnect SSL VPN server

You're in the wrong forum. Bullseye is Debian and there is no CentOS 12, only Debian 12 (Bookworm). You want a Debian forum.

Use UUIDs or LABELs or LVM?

Are they researching security and how easy it is to exploit an old and unmaintained system?

Run a more recent distro than CentOS 7? That video card is "Alder Lake-S GT1 [UHD Graphics 730]" which means you are trying to run a nearly 10 year old distro on hardware from 2022 or 2023. CentOS 7 was released in 2014 and got new hardware support for the first 5 years of its life so you should be ...