Hi Guys,
I want to bring my server live.
I have Static public IP Address 123.99.88.77 (Say) and also I have also registered a domain name say(live server23.com) the domain name providers have also given me the control panel with DNS management settings.
I have gateway 192.168.1.1

Now My questions are as follows?

1. First I want start with basic, I want to configure FTP Server which I want to bring online If I have public ip address as 123.99.88.77 then what IP should I give to my Linux machine 123.99.88.72 or 192.168.1.42 which class should I use here?

2. I am having DLINK 2750u ADSL router with wifi, now If i want to bring my FTP Server online then I will have to do port forwarding, now where this port forwarding can be done on GUI on Router or I will have to write down iptables on Linux machine for port forwarding?

3.Suppose I have two Linux machines on vmware on Windows 7 OS, can I bring these two machines online or form 2 node cluster among them?( I am curious to know this)

Please suggest me, I have searched Google but I could not find actual thing.

Thanks in advance!

An IP address on your internal side of your router. Assuming your router does not have a DMZ port.
If you are using your router as your firewall then consult your routers documentation.
Yes, you can have them both online, although you will have to use different ports to identify them as you will only have one external IP.