Linsys with 5 static ip addresses. How to configure?

[joe]

I have a quick question as a newbie about networking, that I was hoping
someone might be able to help out with.

I have recently upgraded my DSL service with MNSI.NET (Toronto, Canada)
provider where they provide 6 static IP addresses (1 for router + 5 for
other machines).

My plan is to run 4 Windows 2003 Standard Edition webservers (4
different computers).

Problem is that I have no idea how to setup and configure my Linksys
WRT54GS router.

This is my setup:
- DSL modem plugged into Linksys router
- 4 cables out from router to my 4 computers.
- 1 ip address I've got from my provider to be used for router
(216.x.xxx.184) and 5 others (216.x.xxx.185-190) for my webserver
computers.

How do I setup my DSL router to assigns these static ip addresses to my
server computers?

Currently, my router is setup as PPPoE and I am logging to my provider
using a name and password.
I use DHCP to assign ip addresses to my computers.

Using this setting my router assigned different local ip addresses to
each server, but no matter from which server I access
www.whatismyipaddress.com (service to find ip displayed to outside
world), it shows the same ip address for all server: 216.x.xxx.185.

What do I have to do?


Any help would be greatly appreciated.

Cheers,

Enzo

 

[Robert L [MS-MVP]]

I don't think you can use 5 public IP address in WRT54GS. Also, in most cases, one public IP is enough and you don't want to assign the public IP to a server. If you need to setup VPN, RDC and HTTP, you just do port forwarding.

Bob Lin, MS-MVP, MCSE & CNE
Networking, Internet, Routing, VPN Troubleshooting on http://www.ChicagoTech.net
How to Setup Windows, Network, VPN & Remote Access on http://www.HowToNetworking.com
I have a quick question as a newbie about networking, that I was hoping
someone might be able to help out with.

I have recently upgraded my DSL service with MNSI.NET (Toronto, Canada)
provider where they provide 6 static IP addresses (1 for router + 5 for
other machines).

My plan is to run 4 Windows 2003 Standard Edition webservers (4
different computers).

Problem is that I have no idea how to setup and configure my Linksys
WRT54GS router.

This is my setup:
- DSL modem plugged into Linksys router
- 4 cables out from router to my 4 computers.
- 1 ip address I've got from my provider to be used for router
(216.x.xxx.184) and 5 others (216.x.xxx.185-190) for my webserver
computers.

How do I setup my DSL router to assigns these static ip addresses to my
server computers?

Currently, my router is setup as PPPoE and I am logging to my provider
using a name and password.
I use DHCP to assign ip addresses to my computers.

Using this setting my router assigned different local ip addresses to
each server, but no matter from which server I access
www.whatismyipaddress.com (service to find ip displayed to outside
world), it shows the same ip address for all server: 216.x.xxx.185.

What do I have to do?


Any help would be greatly appreciated.

Cheers,

Enzo

 

[Doug Sherman [MVP]]

You would have to buy a much more expensive router to support 5 public IPs.
Oddly, Windows Server RRAS NAT has this capability built in:

http://www.microsoft.com/technet/community/columns/cableguy/cg0503.mspx

If these are going to be purely public web servers as opposed to an AD
domain network, and you have good firewalls, you could use a simple switch.

Doug Sherman
MCSE, MCSA, MCP+I, MVP

 

[Frankster]

Okay, I have not used a WRT54GS router, but....

I cannot imagine that it won't work for your purposes. You don't even want
NAT. You should be able to just configure it with your public static IPs
and go from there. Or, configure it with ONE public IP and just let
"EVERYTHING" pass throuugh (including your public IPs).

However, you will need something to do some sort of firewalling. Especially
since you won't be using NAT. This would be another router/ISPdevice or
firewall in front of the WRT54GS. I just looked at the users guide, on line,
and they have an example of configuring this as the second router, after the
ISPmodem/device. IOW, 1st the ISPmodem, next a router, next your WRT54GS
router.

Anyway, another thing, in order to have 5 usable IPs (usable by your Web
servers) you will need a total of 8. One is used up as the broadcast
address, at least one is used for your ISP modem and at least one is used in
your router (the first one!). That leaves 5 usable. If you need another
for another router, that leaves only 4. If you need two for that router,
you'll only be left with 3 (depends on config). And remember, I'm counting
from 8! You said you're getting 6, 5 usable. There is no way that 6 IPs
will result in 5 usable for Web servers given your situation. Possibly 8
would though. Eight is typically the smallest block sold, but... who knows,
your ISP could sell less. They might have just not been quoting the
broadcast address and ISPmodem address (resulting in quoting the remaining 6
to you). However, if you have to add a router, and you are not doing NAT
(all public IP), I don't think you'll have enough for 4 public Web servers.
Maybe 2, or 3.

-Frank

 

[Richard G. Harper]

Based on my experience with the WRT54G, you will need to disable the router
functions of the device and set up your computers manually on the IP
addresses that your ISP has given you. The router itself won't need an IP
address so you can ignore that part of the configuration.

--
Richard G. Harper [MVP Shell/User] (e-mail address removed)
* PLEASE post all messages and replies in the newsgroups
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