How to handle a block of external IP on a local LAN

I have a Netopia router from ATT and an older netgear prosafe firewall. My local IP scheme is a 10.0.0.x.  Running dhcp, dns and active directory from a 2k3 r2 box.  I have 1 static external ip but need to move to a block to facilitate a security system. Whats the best way to use and manage these IP's without changing my local IP scheme? I assume I am going to need an additional appliance?  

Thanks in advance!
Jasper_FlAsked:
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

x
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Todd GerbertIT ConsultantCommented:
What you'll need is a router that wil allow you to configure multiple external IP addresses and configure their public-to-private mappings. If your current Netopia will do that then you shouldn't need any new equipment; otherwise you'll replace the Netopia.
I don't know if any Netopia routers will do this - I do know just any Cisco device will. I have personal experience with both the Cisco ASA security appliances and 800 series wireless routers, both of which work very well for me and aren't too expensive.

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
lanboyoCommented:
If you don't need the block of external IPs to relate to the internal network in any real way (that is you can continue to have the internal network to connect to the internet using a single IP address) then you can just make your current IP on the netgear firewall one of the external IPs and change nothing wlse. If you need to have the external IPs correspond to internal IP addresses as well as keeping most internal devices behind a single IP address then you will need to have a router with more robust Network address translation as tgerbert states.
Jasper_FlAuthor Commented:
Thanks to both responses, I will need to designate some of the external  ip's  to point to a few ip cameras and DVR units. I suppose I could port forward those requests to the internal device ip  assuming the software has the capability to specify which port to use?

Any advice on a low priced router solution that will handle the NAT a bit better?
lrmooreCommented:
Cisco ASA 5505 would be perfect and give you many new features, too.
Don't know your parameters for "low priced", but it is generally reasonable for a business expense.
Alternative that I know can use multiple public IP's is Linkys RVOx series RV08.
Jasper_FlAuthor Commented:
THanks for the advice
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Routers

From novice to tech pro — start learning today.