VPN, firewall question

NethServer Version: 7.9
Module: Openvpn, firewall

Hello,

Nethserver 7.9

I have a domain example.org. The server is running as orion.example.org on a fixed IP address.
There are external servers that connect to the orion server via VPN.
alfa.example.org
beta.example.org
gamma.example.org

I would like to make the external servers accessible by calling them by name. Please help me to unblock the VPN addresses.
Thanks

I think you just need to setup (local) DNS entries for the external servers, pointing to their LAN IP.
Are there log entries about the blocking firewall in /var/log/firewall.log?

BTW, it’s time to think about migration to NS8, see also NethServer 7 migration — NS8 documentation and NethServer 7 migration — NethSecurity documentation