How to access internal Website over VIP from LAN?

[ITAxess]

Hallo! I have a Webserver in my LAN: 10.0.0.30 with open Port 14000 and assigned a VIP: 123.123.123.123 From the Internet, I can access the Website: http://123.123.123.123:14000 PROBLEM: I need to access this website from the LAN 10.0.0.0/24 via the external URL http://123.123.123.123:14000 At the moment, I can only access the Website from the LAN with the URL http://10.0.0.30:14000 How can I configure that?

[ITAxess]

I´m afraid, it is not that simple as it looks. I configured a DNS Translation for smtp.domain.com External IP 33.44.55.66 Internal IP 10.10.10.3 so far so good --> internal clients get the internal ip when accessing smtp.domain.com BUT: also external clients (in the internet!) get the INTERNAL IP now - why?