[Updated 10:43 a.m. 6/15/2015] Our internet service provider has communicated that this issue was resolved. These problems were due to a region-wide routing issue, and continued until about 8 p.m. Saturday night.
[Updated 1:45 p.m. 6/12/2015] Some of the issues have been due to versioning issues with the VPN client, which have been resolved. Many other members of the campus community still report being unable to connect. This has been traced to problems at our internet service provider. They are currently trying to resolve the issue.
[Original] Members of the campus community have reported difficulty connecting to our VPN. We apologize for the inconvenience, and are working to restore access as quickly as possible.