By submitting your email address, you agree to receive emails regarding relevant topic offers from TechTarget and its partners. You can withdraw your consent at any time. Contact TechTarget at 275 Grove Street, Newton, MA.
- What are your quality of service requirements for site-to-site traffic? If you plan to run high-throughput or latency-sensitive applications on your site-to-site VPN, you may prefer using a dedicated WAN link with guaranteed services levels for that traffic. Alternatively, you could purchase VPN gateways with traffic shaping capabilities that let you dedicate a portion of a single WAN link's capacity to the site to site tunnel, and the remainder to mobile VPN users.
- What are your availability requirements for site-to-site traffic? A single WAN link is always going to leave you at greater risk for failure than redundant WAN links. But keep in mind that purchasing two WAN links won't necessarily give you double capacity unless your VPN gateways are capable of load sharing between those links (active/active rather than active/passive configuration).
- Would separate WAN links create a more secure, manageable topology? Your VPN gateway will give you the ability to segregate traffic to/from VPN tunnels over a single WAN link by configuring separate security policies for site-to-site and remote user traffic. But if remote users need to access entirely different resources than your site-to-site VPN, you may just find it easier to keep these VPNs physically separate. For example, if remote users only need to access one email server, you might find it easier just to plant an entry-level VPN gateway in front of that server, with its own WAN link and no other internal connectivity. On the other hand, if remote users need to access many destinations at both sites, it is more efficient to bring mobile traffic into the same VPN gateway that directs traffic for your site-to-site VPN.
Dig Deeper on Network Design
Related Q&A from Lisa Phifer
Whether you need a basic open source mobile device management tool for your company's Apple or Android devices, or something more customized, you ...continue reading
Advancements in 4G LTE networks improved the security of cellular data transmission, but it still varies wildly from network to network.continue reading
The enterprise mobility management market for wearable devices is in its infancy, but IT can still use existing EMM tools to manage wearables.continue reading
Have a question for an expert?
Please add a title for your question
Get answers from a TechTarget expert on whatever's puzzling you.