[client]

AT&T. DSL. Modem with one ethernet port. Wireless Belkin router. No firmware capabilities for having static Ips while using DHCP too. It's one way or the other.

This really isn't a problem, more of an advice issue.

Objective

Have one device set on a static IP for port forwarding while the rest of the devices remain DHCP.

Issues

I have a perfectly working router and don't want to spend another 70-100 bucks on a router capable of doing this.

I found a inexpensive wired router for less then $20.

I don't want to set other devices (laptops and smartphones) with static devices so they can connect to other wifi networks.

Questions

1. Is it possible?

2. How would I set it up? Wired before wireless? Split the connection out of the modem?

3. What would the setting be for each router.


I could go get the more expensive router but I enjoy the challenge, I hope you guys do to. If this is even a challenge for you. :thumb:

 

[loda117]

ok so the machine that will need a static IP
you need to configure that in OS to have it so it only has static IP

Then on the router where you are doing the port forwarding (different routers its called different things)
Where it will say the machine's IP type that IP you have assigned in that particular machine for Static IP in OS
and hit save
I am assuming your doing this for either RDP connection or VPN then the remote user will be directed to that machine once connection has been established on that port which has been forward and rest of the machines will stay with dynamic IPS from the router which can change whenever the lease time is set to

 

[Fred Garvin]

The correct way to do what you want would be to put the modem into bridged mode. Then configure any router you want to act as your DHCP server. You'll have to put the router in PPOE mode and enter your AT&T login info into the router.

Next, you'll set up DHCP reservation however you want for the computer that needs a static IP.

You can assign a static IP through the NIC as Loda suggested, but that does not reserve the address within your router. If another device gets turned on first, it's possible the router could assign the address you wanted to use for the static device to some other computer.

You'll also want to read the directions for whichever router you choose, first.

 

[client]

Loda, thank you for the help. How would I go about hooking it all up? Wired router first? Wireless?

I think I would need to plug the wired into the modem with the wireless plugged into the wired.

I think the wired would have static IPs assigned. I think I would need to set one for the device I want to port forward and one for the second router.

Would the second wireless router have internet connection through the wired via the static IP? And then route the wireless devices through that IP by assigning them IPs as they boot?



Mr. Garvin, thanks for the reply. But I'm a bit confused.

1. I don't know if I can set my modem to bridged. It doesn't have any external switches or buttons and I don't know if it has an interface that I could use.

2. As far as I know AT&T has not supplied me with a user name or password.

3. The router I have will not let me assign a static IP and let me use DHCP, it one or the other. I doubt either router I have has that function.

I know I can change the IP on the wireless router, it's cloned at the moment.

In the wired router I can clone it to the main computer. From there I think I can assign a static IP to the device I want port forwarded and the second router, I can change the IP addy for both the device I want forwarded and the wireless router. I think this will allow both of them to connect to the internet. At that point the wireless router will be able to assign IPs (via DHCP) to the wireless devices that connect to it. I don't think there will be any IP conflicts as long as I set the static IPs outside the range of IPs the wireless can assign.

 

[Fred Garvin]

Client, my advice is to keep it simple. You are configuring a complicated setup. You are going to have to download user manuals for all the network devices you're using and read the setup guides. Your AT&T user name and password may already be stored in the modem. You should see it on one of the setup pages or call AT&T

First you need the IP address for the modem. Either find it in the manual or connect directly to it. At a command prompt, type IPconfig /all and look for the address of the Gateway. That's the address for your modem. Put that address in your browser and see if you can access the modem's software. That's where you'll be able to see if you can bridge the modem.

Yes, you can probably do what you want to do with the parts you have. As long as the device handling DHCP has the ability to do IP reservation or limit the scope of your DHCP clients. If not, the easiest method is to buy an updated router. Less devices int he chain the better.

Your configuration should be MODEM-->DHCP ROUTER-->WIRELESS ACCESS POINT (dhcp turned off)

 

[loda117]

You are actually making things more complicated then they sound
As Fred said the first order of business is to get your Internet to work through your Router and then to your Wireless Access Point

Once you have that setup which with ATT modems will require you to bridge the router to Modem
Now are you getting Static IPS from ATT ?

 

[client]

Fred and Loda, my wireless router will let me set a range of possible IPs. I believe it's from 2-100.

I didn't buy the modem from AT&T, I bought it Best Buy I believe. AT&T didn't set anything up, they made the connections at the street and that was it. I bought the modem, plugged the DSL line into it, plugged my wireless router into it and I am on-line with no problems. No passwords or user names.

Loda, I'm not sure if the IP from AT&T is static or not, I will check this evening.

I'm pretty sure I can plug the wired router into my modem and connect a PC to it and have internet, I doubt I will have to do anything with AT&T to achieve this.

I will check on the static IP from AT&T and if I can find the user interface for my modem this evening. Thanks for the help.

 

[Wand3r3r]

You would only bridge if that modem was a modem router. Straight modem you can't bridge and you don't need to.

Are we confusing wan static ip with a lan static ip for port forwarding?

 

[Fred Garvin]

You would only bridge if that modem was a modem router. Straight modem you can't bridge and you don't need to.

You are right, that might be my mistake. I was assuming Client was only using the DSL modem and installing the Belkin.

 

[loda117]

As far as i remember if the modem was not a router it will work with the router without bridging but AT&T recommends it to be bridged

 

[IT-Barry]

1. Is it possible? Yes

2. How would I set it up? Wired before wireless? Split the connection out of the modem?
Wireds better.
Load up command prompt - type - ipconfig/all
Take note of the following.
Subnet
Default Gateway
DNS Servers

Once you have a note.
Windows 7
Bottom left - Windows Start Menu
Search for network and sharing - Open it up
Change adapter settings on this new window on the left hand side.
If wired right click the Local area connection
If wireless right click the wireless.

Properties. Find Internet Protocol Version 4, click it once and go to properties.
Set these to "Use the following IP Address" "Use the following DNS server addresses"
Use the info gathered from the ipconfig/all

For IP Address choose the same ip as the default gateway BUT change the last column
For example if your router is 192.168.0.1, set the IP Address column to 192.168.0.150

You want to then go onto your router and port forward the ports to 192.168.0.150 or whatever your IP Address is now on your machine.

This is a static IP on your computer now, it wont ever change, unless you change it.

3. What would the setting be for each router.
Should only need to port forward on the router to the new static IP on your pc.

 

[client]

Thank you everyone for the help and advice.

Right now I have AT&T dsl service, I didn't want the modem AT&T offered so I bought my own modem.

AT&T made the connections at the road and I connect to the internet through a phone jack in room Alpha.

At that phone jack I run a single line to the modem.

From there I run a ethernet cable to a wireless Belkin router. I can not set up this router to give one device a static IP and the rest a IP given by DHCP. I have to either use DHCP or totally disable it and give each device a static IP which I do not want to do.

From another LAN port on the Belkin wireless router I have a ethernet cable that is installed in wall that runs to room Bravo. I installed the cat-5 and ethernet plug in. At that plug I have a device wired to the wirelss Belkin router.

Everything works great as is. The only problem is I want to give the device in room Bravo a static IP which I can not do at this time. I have no problem connecting to the internet and I know how to set up a static IP, I just can't do it due to my network hardware at this time.

IT-Barry, you said that the objective in my OP was possible. But you seemed to explain how to set up a static IP in my router. I thank you, you simplified my understanding of the process. What I need to know is what will be the best way to set it up.

How I think I will need to do it.

DSL in to modem, I don't think I need to bridge the modem or really do anything to it.

Ethernet cable out to wired router.

I will set this wired router up with two static IP addies. One for the device in room Bravo, with the wired connection to room Alpha. And another one for my wireless belkin router. I will set each device (device in Bravo and Belkin router) with IPs like .305 and .505.

Out of this wired router in room Alpha I will run two ethernet cables from the LAN ports. One to the wired device in Bravo room and the other to the wireless Belkin router.

Each will have their own staic IP so the wireless Belkin router can route them to the modem.

In the wireless Belkin router (which is down stream of the wired router) I will set DHCP routing with an IP range from .2 to .100 so they will not conflict in any way with the two static IP addies in the wired router. I will set the static IP in the wired router as the wireless Belkin routers connection to the internet.

That last sentance is the one place I am confused and the main point in which I need help. And still the big question remains.

Is this all possible?

Thanks everyone for your help.