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Hardware solution to route between 2 public IPs

Posted on 2003-03-10
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Last Modified: 2010-03-19
I am currently using Win2K to route between 2 public IPs on different networks using two NICs in one server joined to the rest of the network

e.g. Server has 2 NICs with 212.19.100.1 and 212.19.200.1 where 212.19.100.1 is the main gateway to the ISP

This allows me to route traffic to a block of public IPs in the range x.x.200.2-10 which I have for example.  Ideally I would like to use a hardware router to do this task rather than a software based solution.  I don't know much about hardware routers butI assume I would need to statically configure the routes.  Is there a cheap router on the market that would allow me to do this or would it be possible to use a cable/dsl router and disable NAT so it doesn't use private IP addresses?

Thanks..
 
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Question by:advansys
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7 Comments
 
LVL 79

Expert Comment

by:lrmoore
ID: 8106317
G'day, advansys

You can use a SOHO router. I know the Linksys has an option as Gatway (NAT) or Router (no-NAT) mode, and static route entries are simple, too.

Cheers!
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Author Comment

by:advansys
ID: 8106340
OK.. I actually have a Linksys router and yes it has a "Router Mode" option..  any ideas what the routing entries would be?

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LVL 79

Expert Comment

by:lrmoore
ID: 8106421
Since you only have one default route out, that's the easy part. How many internal subnets do you have?
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Author Comment

by:advansys
ID: 8106475
The original public IP we were given was x.x.66.49

The extra block of IPs allocated to us were in the range

x.x.75.16 - 22

Subnet mask 255.255.255.248

I was told that x.x.75.16 and x.x.75.22 were broadcast addresses so not usable and therefore up until now I have been using 2 nics with x.x.66.49 and x.x.75.17 in one server running win2k as the router.

Does this help?
0
 

Author Comment

by:advansys
ID: 8106503
The original public IP we were given was x.x.66.49

The extra block of IPs allocated to us were in the range

x.x.75.16 - 22

Subnet mask 255.255.255.248

I was told that x.x.75.16 and x.x.75.22 were broadcast addresses so not usable and therefore up until now I have been using 2 nics with x.x.66.49 and x.x.75.17 in one server running win2k as the router.

Does this help?
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LVL 79

Accepted Solution

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lrmoore earned 1000 total points
ID: 8106611
You can use .17 - .22 as hosts.  x.x.75.16 is the network ID and .23 is the broadcast

You can have x.x.66.49 as the WAN address of the Linksys and x.x.75.16/255.255.255.248 as the LAN subnet
One NIC in your server, x.x.75.17
x.x.75.18 - x.x.75.22 can be applied to other servers/workstations.
If you have more than 6 total inside hosts that need addresses, you would need to move up to a more expensive, i.e. Cisco, router that can provide multiple one-one NAT for inbound and a PAT overload outbound for all your workstations.
Does this make sense to you?
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Author Comment

by:advansys
ID: 8106684
Thanks.. I'll give it a try!
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