Configure router w/ static IPs

[jmanuel29]

Ok, I have a DLS internet connection with a Netopia 3346N cable modem. I also have a block of static IPs from my ISP. They are 70.xx.xx.xxx. I have 5 pcs that I want to hook up to the internet, create shares etc etc. I bought a WRGT54G Linksys Wireless Router. I want to connect two pcs wired and three wireless and be able to use the block of static IPs that I am paying from my ISP. The problem is I have not been able to do that, I have connected one of the Netopia ports to the Internet port on the Linksys and then tried inputing the static IPs but nothing. I am able to use the Netopia and Linksys router but only with 192.xx.xx.xx and that defeits the purpose of paying for the static IPs. Any ideas or suggestions on how to do this???

[TonyT]

confusing data:
DLS is a adsl internet provider in Ohio, not cable internet afaik.
What kind of Internet connection do you have?

next:
To use multiple comps with a router you ONLY need one ip address from your isp, you don't have to pay for additional ip addresses. The router uses that 1 isp assigned ip address and the router then assigns local ip addresses to each comp connected to it.

[jmanuel29]

Sorry for the mistyped info. its DSL from SBC. And like I mentioned before I have 5 static IPs from SBC, which I will like to use to access the computers remotely, one is used for the DVR and cameras. If I just put one static IP for the router and let the router handle internal private IPs, will I be able to access the computers remotely through RDP????

[TonyT]

Yes, just configure Port Forwarding in the router to forward RDP to the desired lan ips. Best to configure each comp with it's own static ip too via Local Area Connection Properties.
see www.portforward.com

[YeOldeStonecat]

You can let the Netopia run NAT on your first public IP address...and do port forwarding (what Netopia calls "Pinholes") for RDC. This is what I prefer for networks..that way, all of your computers are behind the NAT firewall on private 192.168.1.xxx addresses. Default is 3389...if you have more than 1x rig you want to RDC to...you can customize ports for terminal service on the other rigs.

The units they ship with the business accounts, such as your Netopia, can also perform multi-NAT..and assign public addresses to devices behind them. There's a section on the routers web admin at .254 called IP Map Entries. We've also done this on some of our clients networks...where for example...we'll have a VPN appliance on one public IP address, we'll have a mail scrubbing appliance on yet another one of the public IP addresses with the MX record pointing to it...and we'll have the WAN NIC of a proxy server on yet another public IP address. You're usually given a total of 8x IP addresses...5x of which are usable by you. One for the router, the other your broadcast, and another is a jump to the ISP.

[jmanuel29]

Well actually that is very good information you are giving me. Now can you be more specific on how NAT works or better to say how I will configure the Netopia to use NAT to the Linksys router.

[jmanuel29]

Ok, I've found the manual for Netopia 3346N and it gives a lot of
information on how to create Pinholes, IP Passthrough, IP Maps etc.
It also gives information about PPPoE and Static IP. However, I am
still a little bit confused as far as which IP to use on the Netopia. Do
I use a PPPoE which will give me a 192.168.1.254 address on the Netopia
or do I use one of the static IPs provided by SBC which is 70.x.x.x. Of course
the Linksys would use 192.x.x.x. addresses as I understood on your previous
posts. Almost getting there just need a little bit of arragement on my ideas :)

[jmanuel29]

Hello I have a Netopia cable modem and a WRTG64 wireless router I would like
to know how NAT is configured on the Netopia for Address Translation to a
block of static IPs that i have

[YeOldeStonecat]

Assign internal host static LAN IP address...using the IP Map function in the routers web admin..map one of the next avail pub IPs to the internal one.

But in your case...as mentioned above...you may be getting ahead of yourself a bit...I'd look at just utilizing a single public IP address...and doing pinholes to port forward only the minimum ports necessary to run what services you need. IP Mapping is effectively DMZ'ing...whatever PC is sitting on a public IP is fully exposed to the problems of the internet...hackers, worms, trojans, various vulnerabilities...and once hit..since it's also on the same network as your LAN...it's a wide open door for your entire network to now be hacked....you effectively leave a back door wide open.

[jmanuel29]

can anybody explain a little bit more on how to configure the Netopia modem and the Linksys wireless router to allow NAT and use private IPs on the network, but point those addresses to one of the static public IPs. Thank you

[YeOldeStonecat]

Around page 40
http://www.netopia.com/equipment/partners/npp/pdf/3546_cts.pdf

[archersf]

Hi Guys,...Thanks for taking time to help on this forum.

here is my problem,

I got AT&T DSL connection with Static IP's / WinXP PC.
Netopia 3346N Router directly connected via cables. I can access internet without any problems. I am trying to connect to my PC via Remote Desktop. I did the setup in the Router correctly, I think. But I can't connect to my computer. The XP firewall is disabled on the computer and all the other firewalls as well.

I created pinholes for TCP/UDP connection with my computers IP address but it won't connect. I have the exact same setup on another DSL and computer and that one works fine.

Can anyone help? Someone told me that the Netopia Router I have is faulty and someone said that AT&T disabled the connection somehow and only they can enable it. And you know how the support people are, I talked to 3 ladies today none of them knew what they were doing or talking about...just kept me bumping from one CSR to another....

Thx

[mccoffee]

On the computer goto control panel system remote make sure those boxes are checked

[YeOldeStonecat]

Only need port 3389 TCP, make sure exception is made on the XP firewall (or any other 3rd party software firewall you may have)

Make sure from across the internet you're connecting to the correct WAN IP address

Test the workstation itself by trying to connect from within the LAN

[archersf]

Yes, Remote Desktop is enabled on the computer.
Yes, TCP 3389 is also enabled and there is an execption in the XP firewall as well. Although the XP firewall is disabled.

And yes, I can't connect to the computer via LAN either. So something tells me that my computer has some program that is disabling access to it. But at the same time, I have another computer that I tried to access via RDP but no luck. So that could be the result of the modem/router, right?

What program do you guys recommend to run a port scanner?