Oregon State University

What does split and full tunnel mean? What is the difference?

OSU has two types of VPN? connections available.

Split Tunnel - Routes and encrypts all OSU bound requests over the VPN.

Examples include: Blackboard?, Outlook web mail, OSU web pages, etc. All other internet traffic is NOT encrypted or sent over the VPN. Examples include: Amazon, Facebook, Google, Yahoo, etc.

  • Note: WebVPN is Split Tunnel only.

Full Tunnel - Routes and encrypts ALL requests through the VPN to OSU. Examples include: OSU Blackboard, Outlook webmail, Yahoo, google, etc. Once that request leaves OSU for another destination, such as yahoo, it is NOT encrypted over the VPN tunnel.

We are currently assigning addresses out of the following CIDR block (IP address? range): 

10.197.0.0/16 (10.197.0.0 through 10.197.255.255)

More specifically, the following general allocations have been created

VPN Type

CIDR Block

IP Address Range

Lan-to-Lan:

10.197.0.0/19

10.197.0.0 - 10.197.31.255

Remote Client:

10.197.32.0/19

10.197.32.0 - 10.197.63.255

Certain VPN groups are assigned different addresses out of the CIDR block. However, all VPN clients will fall inside these ranges.  

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