NAT Help REquired

[wasabi]

OK, so i am getting a DSL connection with 5 public ip addresses. What i need to do now is NAT from my external or public network to my private or internal network. Theoretically this sound easy, a pc with two network cards and software to do the NATting.

Can anyone please point me to the right direction as far as software needed and a simple set up procedure.

My network is set up as follows.

Public IP's
196.37.1.xx1
196.37.1.xx2
196.37.1.xx3
196.37.1.xx4
196.37.1.xx5

Subnet Mask - 255.255.255.248

Private network
192.168.1.x (total of 35 Machines)
Subnet Mask - 255.255.255.0

I am using a Cisco router that is locked and have no access to.

What i need to do is create a static NAT and create an internal gateway that will forwad traffic to and from the router wich also has a public ip.

If anyone can help please drop me a mail @ [email protected]

 

[Impregim]

If you have a spare old box to do the static routing for you have a look at http://www.m0n0.ch/wall/
Setup & configuration takes about 20 mins including setting up the aliases & forwarding to internal servers with routable IP's.
Hope it helps.

Regards.

 

[nic777]

I am using a Cisco router that is locked and have no access to.

Well thats crap. You've paid for it and the cisco router can probably do it for you. Can;t you request access to it or ask your service/hardware provider to do it for you?

Pointless to waste time and money on another router when you got one perfectly good one there.

 

[wasabi]

Cisco Router

Yeah it would be nice having access to the router but it is on lease and thats the end of that.

Thanks Impegrim will check it out......

 

[hamba]

Here is an alternatife to mon0wall

http://www.pfsense.com/

 

[alchamy]

Here is an alternatife to mon0wall

http://www.pfsense.com/

This is an awesome product, final release should be around the 15th of december

 

[!!DV!!]

All you need is either MS ICS (Internet Connection Sharing) or a linux box running nat for you.. If you ask that nat be done on the router you lose a lot of you power when it comes to hosting stuff.

If you what help with NAT on Linux I will be more that happy to help.

Cheers

 

[wasabi]

NAT Achieved

Thanks for all the help guys. I managed to get up and running with smoothwall. It was a piece of cake to set up and is working like an Afghan bomb....