NAT with Cisco Router

J

Jonno2343

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Hey
I have signed up for the SAOL Fixed IP service.
THey asked if they must do the NAT or if I must.
If they do, I have to give them all the ports they want forwarded.
I told them that I will do my own, but I'm not too sure what it actually means ;)
I have a Linksys WRT-54G at home. Is that capable of doing what I need done?
How would I set it up?
It is a Cisco router btw.

Thanks
Jonno
 
Last edited:
Linksys is Linksys. It may be made by Cisco, but it's not the same as "a cisco router".
Linksys is their brand for home / SOHO devices, iirc.
 
NAT'ing is done automatically by your router.

Simply choose an IP range for your network and set the gateway in line with that. I usually keep the first 20 IP's for servers/devices and start the DHCP pool at say 10.0.0.21 to 10.0.0.254.
 
This is what they said...

This is an example of a set up that is done with NAT

LAN : 192.168.0.1
Subnet: 255.255.255.0
Client IP: 192.168.0.2
Ports Forwarded : 3389/25/110/80/81/82 to 192.168.0.2

This information is setup on the Cisco Router, This is if the you want us to setup NAT on the router, the other way is to supply you with a public IP and you do your own NAT on your DHCP or Proxy Server.

If we do NAT, any changes after the router is delivered , will be charged for at our standard labour rates of R250.00 per hour.

We do not get involved in or with the your network at all.
Click to expand...

SO what does that mean?
 
This is an example of a set up that is done with NAT

LAN : 192.168.0.1
Subnet: 255.255.255.0
Client IP: 192.168.0.2
Ports Forwarded : 3389/25/110/80/81/82 to 192.168.0.2

This information is setup on the Cisco Router, This is if the you want us to setup NAT on the router, the other way is to supply you with a public IP and you do your own NAT on your DHCP or Proxy Server.

If we do NAT, any changes after the router is delivered , will be charged for at our standard labour rates of R250.00 per hour.

We do not get involved in or with the your network at all.
Click to expand...

This means the following :

Ports 3389 (Remote Desktop), 25 (SMTP), 110 (POP3), 80 (HTTP), 81 (HTTPS) and 82 will be forwarded to the machine with the IP of 192.168.0.2. This would typically be your email/web/FTP server, and the rest of your machines won't have exposure to the Internet.

This also means that you can use the address range of 192.168.0.3 to 192.168.0.254 for the rest of your machines.

And that you'd better be sure what you want as they will charge you to come out and set the router up, they will NOT touch the rest of your network.
 
Furthermore, if you do not plan to use any internet servers (POP3, SMTP, HTTP, FTP) then you won't need port forwarding, and then the default configuration on your Linksys should work for you.

(assuming the Linksys does DHCP and will also handle the connection).
 
I will be doing port forwarding.
I looked on the DD-WRT wiki and it seems it will be possible to do the NAT with the router.
Thanks for the help everyone.
I will let you know what happens when I get the router.
 
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