NETWORK OUTAGE – VPN OUTAGE
August 22, 2022 12:27 p.m.Outage category:
VPN
Location:
All Campuses
Status:
Closed
Resolved alert:
08/20/2022 12:40 pm
University VPN using DUO was not working. All other services using DUO were NOT impacted.
Initial symptoms:
University VPN using DUO was not working.
Duration:
08/20/2022 10:20 am - 08/20/2022 12:40 pm
Impact to Mason:
University VPN using DUO was not working.
Affected Services:
Virtual Private Network (VPN)
ROOT CAUSE ANALYSIS
Cause:
The original configuration of DUO proxy servers talking to the domain controllers via the F5 load balancer stopped working for some as of yet unknown reason.
Resolution:
The DUO proxy servers were reconfigured to bypass the F5 load balancer and instead directly talk to the domain controllers
Prevention:
Have multiple proxy servers configured as fail-over in case one fails.
STATISTICS
Service Team:
NSOPS, NSENG, CCSO, TMS