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Using Static IPs as Gateways? For routing Traffic?

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  • Networking
  • Gateways
  • Internet Connection
Last response: in Networking
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September 10, 2014 7:59:10 PM

Hi I recently purchased 5 static IPs on my internet connection for two reasons.

I had the understanding that they could be configured so that each one of those devices will show a different IP when interacting with the external network (internet).

So for example I could set up MODEM>> STATICIP1>> Router>> Devices
which would yield me the result STATICIP1 when I did a what's my IP on the systems behind that router..
I would like to have 5 different networks each separate from each other is this possible?
or would I have to purchase 5 different connections for this.

Second, I should be able to access this networks remotely since they have Static IPs.

Is this correct?

EDIT: This is an AT&T business connection with 5 usable Static IPS.
What I want to know is if I can set it up so it looks like there are 5 different connections like if someone from IP1 was different from IP2 etc... And I could just create subnets from those IPS? even with only one modem?

More about : static ips gateways routing traffic

September 10, 2014 8:06:48 PM

Why do you want to do this? At home or elsewhere?
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September 10, 2014 8:14:25 PM

The static IPs would be assigned to your modem (this would be external IP addresses), and your modem would route these IP addresses to specific devices on the network (either by MAC address or IP depending upon the modem/router).

If you wanted 5 separate networks (on the internal side) corresponding to those IP addresses, you would setup MODEM >> NETWORK SWITCH >> ROUTERS. The modem would have to route the IP addresses to each router, so that each would have it's own IP Address.

The problem might be that your modem can only route a single IP address (some do 1, others can do multiple IPs).

If you are wanting to access your computers remotely (via remote desktop connection), there are three basic options:
1) A product like LogMeIn - which would provide a remote desktop connection between PCs. They charge per PC on this setup.
2) LogMeIn Hamachi - this is a VPN service - For $29 (I think this price is correct) per year, you can have up to 30 PCs on a virtual private network and use microsoft RDP to connect to them.
3) Through your ISP, get static IP addresses - you will have to pay extra for the IP addresses, and you may be required to purchase additional hardware to make this work.

LogMeIn Hamachi is the cheapest solution out there....and it works great.
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September 11, 2014 9:06:25 AM

It depends on the ISP how exactly they implement it. Cable modem pretty much you put a switch and the first 5 mac addresses it sees would get ips. Some things like att uverse get more complex. You can either assign them directly to the lan as a subnet and give ip out via dhcp or you can do 1-1 nat and use private addresses on the lan. It seems there are also other ways to do this depending on how the vendor implements it. Unfortuantly they do not just do it the simple way and route a subnet to your router like they do on a commercial connection.
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September 11, 2014 10:49:49 AM

ronintexas said:
The static IPs would be assigned to your modem (this would be external IP addresses), and your modem would route these IP addresses to specific devices on the network (either by MAC address or IP depending upon the modem/router).

If you wanted 5 separate networks (on the internal side) corresponding to those IP addresses, you would setup MODEM >> NETWORK SWITCH >> ROUTERS. The modem would have to route the IP addresses to each router, so that each would have it's own IP Address.

The problem might be that your modem can only route a single IP address (some do 1, others can do multiple IPs).

If you are wanting to access your computers remotely (via remote desktop connection), there are three basic options:
1) A product like LogMeIn - which would provide a remote desktop connection between PCs. They charge per PC on this setup.
2) LogMeIn Hamachi - this is a VPN service - For $29 (I think this price is correct) per year, you can have up to 30 PCs on a virtual private network and use microsoft RDP to connect to them.
3) Through your ISP, get static IP addresses - you will have to pay extra for the IP addresses, and you may be required to purchase additional hardware to make this work.

LogMeIn Hamachi is the cheapest solution out there....and it works great.



Well what I want to have is something to look like I am actually having 5 different connections when looked from the outside of my internal network. In this case 5 different connections.
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September 11, 2014 10:51:25 AM

bill001g said:
It depends on the ISP how exactly they implement it. Cable modem pretty much you put a switch and the first 5 mac addresses it sees would get ips. Some things like att uverse get more complex. You can either assign them directly to the lan as a subnet and give ip out via dhcp or you can do 1-1 nat and use private addresses on the lan. It seems there are also other ways to do this depending on how the vendor implements it. Unfortuantly they do not just do it the simple way and route a subnet to your router like they do on a commercial connection.



Well this is an AT&T business connection that I got installed at home. I want to be able to have 5 connections going outside that show different IPs. Is this possible? Or would I be very limited with what they give me?
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September 11, 2014 10:52:14 AM

i7Baby said:
Why do you want to do this? At home or elsewhere?


I will be doing this at home but its a business connection if that makes a difference.
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Best solution

September 11, 2014 11:11:04 AM

The att one is going to depend on which router you have. The very latest one lets you forward the subset to another router.

The simplest configuration is to put the IP on the lan. Say I have my 5 devices and I plug them directly into the router. So say I get ip
xx.yy.zz.192/29 Normally you would get 6 ip but for some reason att only allows 5 to work. So normally 193-198 would be usable but they will have only given you 5. Let say they tell you 193,194,195,196,197 which leave 198 that does not really work.

What you do is assign xx.yy.zz.198/29 to the router lan ip. Then put the other address in a dhcp pool or assign them statically. For some reason you can use the extra IP as the router lan address but you can't actually make it talk to the internet. But all the other 5 addresses will appear to have a direct connection to the internet.

There are other ways to configure this with nat or the secondary route thing if you have new software but you will have to determine which is best.

Att is very secretive about how they actually managed to make this work and why only 5 addresses work.
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