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Multiple Public/WAN IP redirection to Private IP

I would like to know if it is possible to configure a Linksys router for multiple public IP's.  Owner want to isolate the surveillance DVR cameras on its own pubic IP.

Will a standard Linksys/Dlink router work in this scenario or will we need to buy a more sophisticated device?
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ptsolutionsinc
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ptsolutionsinc
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2 Solutions
 
David Johnson, CD, MVPOwnerCommented:
No as it only has one WAN ip addressable port. There are some consumer grade routers that have 2 WAN ports.. he can do it by port rather than ip address though.
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zunder1990Commented:
He can go with a software firewall like www.pfsense.org. I use it for 2 internet lines each 30 public IPs.
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ptsolutionsincAuthor Commented:
If they had a server then I would consider a software firewall, but all they have is one receptionist desktop.  The internet needs to be stable since it is shared with the hotel tenants.
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Todd GerbertIT ConsultantCommented:
Not more than a week ago one of my friends asked me the exact same question about Linksys routers. As ve3ofa already answered correctly: no, most consumer grade routers will be useless in this particular regard, so I gave him an older Cisco PIX 515 and put it in place of his Linksys. You can pickup a used Cisco router, or a used Cisco PIX/ASA firewall, relatively inexpensively - anywhere between $25 - $100 - and brand new ones aren't terribly expensive anyway. SonicWall's are another firewall/router I have personal experience with, and found to work well.

Check http://www.usedrouters.com/ or eBay.
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ptsolutionsincAuthor Commented:
I contacted the ISP provider and they provide a standard Motorola cable modem with only one WAN port connection, so getting a new device with 2 inbound WAN ports would be useless, correct?  Or, do I install a switch between the Motorola modem and the dual port router/firewall?

If the switch idea won't work, and all I have is one WAN port from the ISP provider, how can we use the two public IP's?
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zunder1990Commented:
The cable internet company has told me that the standard Motorola cable modem will only do one IP. We use a SMC cable modem that handle the muti IP for us.
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ptsolutionsincAuthor Commented:
The standard Motorola cable modem only support one public IP.  They sent us a new Motorola modem which supports multiple public IP's.
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David Johnson, CD, MVPOwnerCommented:
you will have multiple output ports from the cable-modem. i.e. WAN1 and WAN2, that or multiple cable modems
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ptsolutionsincAuthor Commented:
all i have is one modem with one output from the cable-modem but 2 public IP's
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Todd GerbertIT ConsultantCommented:
all i have is one modem with one output from the cable-modem but 2 public IP's

Your cable modem probably works as a bridge (or is capable of doing so), meaning that any network packets coming in on the coaxial cable connector are simply sent out the RJ-45 ethernet/LAN port. That means the cable modem doesn't care how many public IP's you use.

Your cable modem also might have a simple router built into it, but I'd still recommend you use something else, like a SonicWall.

Cable Modem <-->  SonicWall <--> Your Network
                                 ^        ^
                                 |        |
  Multiple Public IPs---         ---Private IP
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Todd GerbertIT ConsultantCommented:
Ahh, that diagram got mangled...

Cable Modem <-->  SonicWall <--> Your Network
                                 ^        ^
                                 |        |
  Multiple Public IPs---         ---Private IP

Open in new window


Basically, in this configuration, no IPs are assigned to your cable modem. All of your public IPs are assigned to the "WAN" interface on the SonicWall (or whatever router/firewall you use), and a private IP is assigned to the SonicWall's "LAN" interface.
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ptsolutionsincAuthor Commented:
tgerbert, so far I follow you and am open to getting a Sonicwall.  I visited the sonicwall "demo" website which allows you to play around with the configuration.  Do you have any idea how to configure the second IP address in the WAN port?
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ptsolutionsincAuthor Commented:
I've contacted Sonicwall and they guided me to the knowledgebase as to how to configure multiple public IP's on one WAN interface.  Thanks for everyones input.
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