Hi,
i can't force my router to comply with following configuration.

Our main router Vigor2952 is located in collocation centrer, 15 sites are connected to main router via VPN HOST-HOST (all sites are equipped with Vigor 2912) - that works OK.
This central router has public IP address XXX.XXX.XXX.XXX, and local 192.168.0.1 .

Now I need to help our webmaster/web server admin. Our new web server is nuder development in office without router capable of HOS-HOST VPN connection.
I have created Dial-up VPN for this new web server that works. VPN Client is assigned with 192.168.0.102 IP address. I can access the web page form other servers in 192.168.0.1-255 network.

Then I have configured port forwarding, in NAT--> Port Redirecton:

Mode: SINGLE
Service Name: DEVHOST
Protocol: TCP
WAN Interface: ALL
Public Port: 8888
Source IP: ANY
Private IP: 192.168.0.102
Private Port: 80

When I try to open XXX.XXX.XXX.XXX:8888 - the web page does NOT load.

What I do wrong? Is there a need of static routing configuration, how to do it?