extracting multiple IP addresses from the ISP

I have been given a block of IP addresses from my ISP. I am trying to find a way to use then all at the same time on my network.

I have the following setup.
ISP -> Cable Moden -> Cisco WRSV4400N Router -> Network switches.

So far I can only access the single IP address that my router uses as the gateway to get internet connections.

If anyone has encountered the same problem your suggestions are more than welcome.
carlocAsked:
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Aaron TomoskyDirector of Solutions ConsultingCommented:
What is your subnet mask?
John KratzerCommented:
You need to add IP forewarding to your router.  

Example: a.b.c.d is external IP pointing to w.x.y.z internal address.
                Have a server in your DMZ with the IP address outside your router on an additional switch.

Depending on your subnet mask will depend on how many addresses you have.
carlocAuthor Commented:
The subnet mask is 225.225.225.0 on the WAN link for the external connection on the router.I then use the internal DHCP on the router to provide internal addresses so machine can connect to the internet
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Aaron TomoskyDirector of Solutions ConsultingCommented:
That subnet mask will only let your router see one wan ip address. Ask your provider what the correct mask is to see the block you ha e purchased
Mick FinleyNetwork EngineerCommented:
are you sure the subnet mask isn't suppose to be 255.255.255.0

225.225.225.0 is not a valid subnet mask

You would have to have another physical interface or ability to create virtual interface on router for the outside world to access these extra ip's


This would not be a port forwarding issue since you are not trying to forward ports, but ip address (DNAT/SNAT).


Where are you presently assigning these ip address's?



carlocAuthor Commented:
yes the IP address is 255.255.255.0 (my typo).

So the IP's are a block from my ISP for example

1.1.1.1 - 1.1.1.2 - 1.1.1.3 etc.

the moden is connecting to my Cisco WRVS4400n router, I have this configured to use the first IP in the block to get an internet connection.
I have one machine in my network (which is a workgroup not a domain) with a static IP address, this  already has RDP port 3389 forwarded to is internal IP. The reason I am trying to use the extra external IP addresses is because I believe that I can only forward the RDP port to a single machine.
Mick FinleyNetwork EngineerCommented:
"I believe that I can only forward the RDP port to a single machine."....you are correct here

I looked at you router specs and it doesn't appear to have the capability to add multiple external ip addresses.  Here is what I looked at:
          http://www.cisco.com/en/US/prod/collateral/routers/ps9923/ps9931/data_sheet_c78-496737.html



I did notice something helpful though.  You have VPN capability.  Instead of port forwarding port 3389, setup a VPN.  This will allow you to connect to the VPN and from there access every pc on your home network.  This is also A LOT more secure than just port forwarding for RD.  

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Aaron TomoskyDirector of Solutions ConsultingCommented:
If your router can't accept multiple want ips there is no reason to pay your ISP for them. If you decide you need them you would have to upgrade to something like a sonicwall or a higher end version of your cisco.
carlocAuthor Commented:
Apologize for my delyaed response. I am going to install a better firewall and use NATing to translate the external IP addresses to internal IP's. I also need to improve my firewall capabilities so this would solve a couple of issues.

I will update and let you know how it goes.

Thanks for your suggestions/
carlocAuthor Commented:
I installed a juniper firweall and have conffgiured this with NAting for the external IP addresses to static iinternal IP addresses. So far everything is good.

Appreciate everyones suggestions and apologize for the delay in responding to this thread
Qlemo"Batchelor", Developer and EE Topic AdvisorCommented:
This question has been classified as abandoned and is closed as part of the Cleanup Program. See the recommendation for more details.
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