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I need advice on purchasing an ADSL modem/router for a small company.

At the moment, we are using the iBurst Wireless service for internet connectivity. I have the iBurst desktop modem, which connects to my Netgear WNR2000 router via ethernet. I am using the Netgear WNR2000 to deploy a wireless network as well.

I have also set up a VPN using Windows Server 2003, and enabled the VPN Passthrough settings on the Netgear router. I am able to connect to the office network remotely without difficulty. However the problem that I've read is that the Netgear WNR2000 only supports VPN passthrough for a single session. This is simply not good enough. I need to be able to support at least 3 concurrent VPN connections immediately, and up to 5 in the near future.

Now I am cancelling my iBurst Wireless service and have just got my ADSL line installed. I have to purchase an ADSL modem, and now is a good time to think of future proofing my investment. I need a good ADSL modem, that will allow me to support at least 5 concurrent VPN connections, or more, without breaking the bank. My budget is about 150-200 USD.

I believe that my current Netgear WNR2000 router will be useless, except maybe to extend my wireless network in the future by a bit. Is there a solution where I can still use my Netgear WNR2000 for WiFi, for e.g., by connecting a cheaper non-WiFi ADSL modem to the Netgear router?

If not, then which WiFi-enabled ADSL modem/router that supports at least 5 VPN passthroughs can you recommend?

To sum it up, I need an ADSL modem/router that is:

  • ADSL & ADSL2+ compatible
  • has built-in 802.11n 270/300mbps WiFi (if having this feature doesn't push the price up too much)
  • supports at least 5 VPN connections using VPN passthrough

EDIT: Answer 2.10 in the following FAQ has me a bit worried - What is VPN/multiple VPN Pass-through?

4 Answers 4

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Stick to your modem.

Then get an Mikrotik 750 o 450 or one of their G counterparts to do the routing for you. The modem stays working as modem only.

Then natuarllly you betterk now what you are doing - that is higher end pro stuff.

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  • +1 for MikroTik recommendation. I've fallen in love with that routing gear.
    – DKNUCKLES
    Aug 30, 2011 at 18:40
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I'd be very tempted to look at a Cisco 877W. They support ADSL and ADSL2+ (some even support Annex M), have builtin wifi (not n, but certainly a/b/g), and support up to 10 VPN tunnels.

You can probably pick one up on ebay for a couple of hundred bucks no problem.

I'd be very tempted to use a seperate device for your wifi requirements. Do you actually need 300Mbit wifi? I've never seen an 802.11n class device actually able to sustain 300Mbit throughput.
I understand the Cisco 887MW has support for 802.11n grade networking, but I think you'd be looking to pay considerably more. (Probably ~$600)

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DrayTek 2820N
http://www.draytek.co.uk/products/vigor2820.html
Apart from Wireless N, this is a Dual WAN router, supports ADSL/ADSL2, you can even get a cheap ADSL Modem and plug another ADSL line into the 2nd WAN port, or if you have a 2nd Cable Internet connection or a leased line terminating on Ethernet, that can directly go into the 2nd WAN Port of this router. Cost effective and feature rich...have never had any problems with DrayTeks - support is awesome. a 2820VN supports VOIP too, but as that is not your requirements you can get a 2820N. It also doesn't charges for any VPN Licenses, just a one off purchase and you are good to go.

Up to 32 Concurrent VPN Tunnels (incoming or outgoing)  
Tunnelling Protocols: PPTP, IPSec, L2TP, L2TP over IPSec  
IPSec Main and Agressive modes  
Encryption : MPPE and Hardware-Based AES / DES / 3DES  
Authentication : Hardware-Based MD5 and SHA-1  
IKE Authentication : Pre-shared Key and X.509 Digital Signature  
LAN-to-LAN & Teleworker-to-LAN connectivity  
DHCP over IPSec  
NAT-Traversal ( NAT-T )  
Dead Peer Detection (DPD)  
VPN Pass-Through  

DrayTek 2955 This will require a ADSL Modem (can get a draytek too), have much more throughput, more vpn tunnels (All in one price - no additional licenses), robust firewall and DUAL WAN too.
http://www.draytek.co.uk/products/vigor2955.html

Both of the above routers will work either in Failover or Load Balance Mode, in LoadBalance Mode the router automatically load balances outgoing traffic on both lines. You can setup policies / firewall rules for specific traffic to go out via a specific wan port.

Hope that Helps

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Assuming there is anything of value on the network, you need a firewall. The protection from ADSL routers are barely sufficient for a consumer home network .. not for a business.

1/ Use whatever ADSL model the DSL provider gives you, and keep it on bridge/pass through mode.

2/ Get a good, solid, business class firewall.

  • The SonicWall TZ100 is excellent, and costs US$300. There is an option for built-in wireless for another US$100. It offers both IPSec and SSL VPN, but only comes with 2 VPN licenses.
  • The Astaro Security Gateway 100 is also a top notch device. It costs a bit more, but has no separate VPN licensing. There is a separate Astaro wireless AP that is managed by the ASG available for around US$120.
  • The Cisco RV110W looks interesting, although I have never used it, and I don't trust Cisco to be inexpensive even when they look it.

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