Dear Alex,

Thank you for your guide, I found informative matters inside the link
http://www.microsoft.com/technet/community/columns/cableguy/cg0503.mspx

but I'm wondering about it, because it started to answer not immediately and at first I thought that I'm wrong again after mapping in the NAT. Anyway I could use mapping on HTTP and HTTPs services to relocate incomming requests to IP of another device inside the LAN. In addition by DynDns (DynDns.org) I could prepare a name to use by users instead of IP.

Also I should say thank you to Winan Jaya for his reply.

Regards,
Farhad