What I have:

• A linksys router WAG160N with firmware version 2
• A "pool" of 5 external static IP's provided by my ISP 213.xx.xxx.n
  • All the required configuration values for the static IPs such as (Subnet Mask, Gateway and static DNS 1, 2, 3)

Current WAN Configuration:

• Encapsulation: RFC 2364 PPPoA
• Multiplexing: VC
• QoS type: UBR
• DSL modulation: MultiMode

What's connected to the network:

• 1 x Server (That I want to make available to the outside)
• 5 x Desktops with static internal IP's, such as 192.168.0.xx
• 2 x Network printers, also with internal static IP's
• 2 x Laptops
• 1 x NAS (Network Attached Storage) also on static IP

What I want to do:

I would like to make the server available from outside the network, for example from your house. The problem is that Im not really sure how to do this. I have tried following the steps on the instruction manual in Linksys but they do not seem to work, once I set it up as shown bellow, I loose internet and all hell breaks loose.

Going into further detail, I would prefer if the network is changed as little as possible, by this I mean that all the computers stay networked within eachother and only the server is accessible from the outside the network.

What I need HELP with:

I have read around that it is possible to set a 1-1 NAT (I know where it is in the menu but have no clue what it does...) so that I can NAT a single public IP directly to a single private IP (in our case the server). But please, How do I do that? Or maybe an alternative?