Q
Problem solve Get help with specific problems with your technologies, process and projects.

Can a VPN slow down a network with a T1 connection?

Expert Matt Vlasach discusses whether or not a VPN can slow down a client's network with a T1 connection. Find out if additional bandwidth is worth the investment.

Can a VPN slow down a network with a T1 connection?

It will slow down your T1, but it depends on where the VPN is terminating. If the VPN is terminating on the router, it should not affect the LAN. The router would convert the regular packages over the LAN. If the VPN is going in through a server, then the processing overhead is required to do that conversion. So in that case, if you're using that server and you have all of those VPN connections going, then everything will slow down. That could cause access to the server to locally slow down.

In terms of the VPN, users coming in from the outside consume more bandwidth than a user not using a VPN. This is because there is encryption overhead added to every packet. Basically, all of the security and whatnot adds overhead, causing an increased use of bandwidth per second for that user. But it's one of the prices you pay to guarantee security in the trusted network. It's worth the investment of additional bandwidth to protect the network than to have no security and open access to all systems.

This was last published in July 2008

Dig Deeper on Virtual Private Network (VPN)

PRO+

Content

Find more PRO+ content and other member only offers, here.

Have a question for an expert?

Please add a title for your question

Get answers from a TechTarget expert on whatever's puzzling you.

You will be able to add details on the next page.

Start the conversation

Send me notifications when other members comment.

By submitting you agree to receive email from TechTarget and its partners. If you reside outside of the United States, you consent to having your personal data transferred to and processed in the United States. Privacy

Please create a username to comment.

-ADS BY GOOGLE

MicroscopeUK

SearchCloudProvider

SearchSecurity

SearchStorage

SearchNetworking

SearchCloudComputing

SearchConsumerization

SearchDataManagement

SearchBusinessAnalytics

Close