Network Topology

Hi All,

Thanks for your help in advance, I'm relatively new to networking so wanted some guidance on setting up a VPN solution. My current network infrastructure is as follows

Static IP --> Linksys Wireless Router Router (192.168.2.1) --> SBS 0001(192.168.10.1) --> DLink Managed Switch ---> Nodes (Static Assigned 192.168.10.x)

I have two web cameras in my network (192.168.10.XX, 192.168.10.XY) and I'm wondering, is there a way I can connect to my network via VPN and access the webcams). The catch, however, is that since I have a small business, I turn off my SBS when I leave for home at night. Plus, the wiring makes it impossible for me to connect my webcams directly to my router so they can obtain a 192.168.2.XX,192.168.2.XY IP's.

I'm hoping if there's a way, I can take a cable from my router and connect it to my switch and be able to pull a 192.168.2.X Ip from the switch as well.

Any suggestions on how I should go about it? Once I've figured it out, I plan on getting the NetGear SRXN3205-100NAS router and start using that for VPN  as well as everything else.

Thank you for your help in advance!

Cheers,
Jatin
jatinahujaAsked:
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ccomleyCommented:
Yes

Re-config your SBS to use only ONE network card. Just disable the 10.1 card and remove the cable.

Cable the Linksys router direct to the switch along with the cameras and the rest of your LAN.

Everything on your lan is now on 192.168.2.0/24

Your router is now "in charge".  As it is doing NAT, it will protect you from most rogue inbound traffic. If you want more protection, e.g .Intrusion Detection, ugprade it to a unit with a more powerful firewall. If the Linksys can't handle the VPN you require you will need to change it anyway.  I don't know the Netgear you mention so can't comment if it's suitable.
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jatinahujaAuthor Commented:
hey..thanks for the quick response, do you think something like this would work (i'm getting 3 static IP's from my service provider).

Service Provider Line --> Hub (Split's into 2) --> Point 1 (Linksys Router 2.1) / Point 2 (VPN Router with no dhcp running on 10.1)

The 10.1 VPN Router connects directly to my switch. The rest of the SBS network remains the same.

Now when I turn my SBS server off, my 10.1 can still communicate with my DVR 10.XX, 10.XY recorders, thus helping me talk to them via VPN.

What do you think?

Thanks for your help!
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ccomleyCommented:
Don't know - what sort of feed are you getting from your ISP? DSL? Cable modem? G703? X21? What is the "WAN" side of your current router/firewall?

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jatinahujaAuthor Commented:
uhh..well I have a physical tower in my building that gets internet over RF, and then converts it...gives me 1 ethernet wire though. According to the ISP guy, I can use a hub to split the wire and start using 3 of the static IP's allocated to me.
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ccomleyCommented:
Oh yes, if your feed is already ethernet you dont' need a router to convert it, so you can put a switch on the connection and split it as you say.

But if you have two separate routers each NAT-ing public IPs to private ones, then to access the cameras from the LAN you have to go out of one and into the other. A little convoluted but should work if you can get the inward access to the cameras working from elsewhere.

So long as your new plan means you're only using ONE of the NICs in the SBS, then turning the SBS off will not affect the connectivity. REMEMBER however that if your SBS box is also your DHCP and DNS server those functions will be unavailable whislt it's off - that could lead a device to drop off line if it's unable to renew its lease after a certain period of time.  Set DHCP leases as long as you can (you won't run out of IPS on such a small net).


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jatinahujaAuthor Commented:
hey...thank you! you are right about the SBS being the DHCP and DNS, however, the DVR's are connected on a static IP on the network, so they don't necessarily ask the SBS for an IP.

My thinking, just to confirm is this, I leave my set up as is. But just add a hub before it hits my router, and split the incoming ethernet wire into two. The new cable goes into another router (that supports VPN), and I turn of DHCP on that router and bring it's IP to that of my internet network 10.1. I think connect a cable from that router onto my internal switch that servers every computer inside.

By doing this, even if my SBS is off, and I VPN into the network, I'm brought into the 10.1 range, and should have my cameras 10.XX and 10.XY accessible.

Phew, does that make sense. Sorry if this is bugging!

Cheers,
Jatin
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ccomleyCommented:
Can't help more - suggest you try it and see. Sounds like some wierd function of your router, but if it works, it works!

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