Non-NAT public configuration

RouterOS Beginner Basics
1

Hey guys, I’m reading right now and am sort of at a loss as to what I need to do here or even what this router is capable of. I am only use to routers like m0n0wall, and other more user friendly routers, so I’m a little dumb here, sorry.

I’m trying to figure out if i need / should use NAT or if I have other options.

Basically I have 3 servers that will be connecting to an RB450 and a network drop in a datacenter that will also connect. I’m thinking Ether1 for WAN and the rest will be lan ports. I really dont know what direction to take out of box. I’m a bit confused as to how the servers will be configured. Lets just say that the Datacenter has given me the following IP scheme:

207.247.73.120/29
207.247.73.120 network
207.247.73.121 gateway
207.247.73.122 - 207.247.73.126 usable
207.247.73.127 broadcast
netmask 255.255.255.248

I also need these servers to be able to access each other on a local IP scheme of like 10.0.0.1, etc.

So 2 of the servers dont need internet IP’s at all, just the local IP, but the web server needs to be accessible via 207.247.73.122 but be firewalled. So whats the best way to do this? NAT the whole thing and then forward the public IP to the internal IP of that machine? If that is suggested, how on earth do you do that? And each port gets an IP?

Sorry for the ignorance. I am still reading as we speak and I’m hoping to update this in an hour with some progress of my own, but I just need a spring board of some kind.

edit
It was suggested to me by support that I simply bridge all the ports, but I cannot figure out how to do this. I can add a bridge, but I dont see what its doing or where I configure which ports to actually connect.

2

The RB450 is router/firewall device with lots of capability.

Use Winbox for configuration.

NAT and port forwarding will work fine for what you want although there are other ways to do this.

Yes you can set up a private network for ports 2-5 and either bridge them all together
or assign them together as a hardware switch.

The way to bridge is first to assign a bridge (like bridge1), then you assign ports to the bridge like ether2, ether3, ether4, etc.
A better method on the RB450 is to assign a port as a slave to another port. You do that through the interfaces menu on each port.
This creates a layer 2 switch between the ports. For example assign ports 3, 4, 5 as slaves to port 2.

Here is a good explanation on how to set up NAT.
http://wiki.mikrotik.com/wiki/NAT_Tutorial

Use google, the wiki, the RouterOS manual, and you should be able to complete your mission.

Good luck,

Tom