Planned Maintenance: Sentinel Web Application Firewall Capacity Enhancements
Resolved
Aug 16 at 08:59pm BST
Maintenance has been completed. The WAF cluster has been online and stable for the last 18 hours.
Total downtime during maintenance was approximately 10 minutes.
Affected services
Web Application Firewall (WAF)
Created
Aug 16 at 01:00am BST
What's Happening?
On 16-Aug-25, we will be making changes to our Sentinel Web Application Firewall system to increase its request processing capacity significantly.
These changes will involve adding additional compute capacity to our load-balancing and scrubbing infrastructure components.
Works are scheduled to begin at 1 AM BST and are expected to be complete by 5 AM BST.
What's the impact?
Traffic that flows through the Sentinel WAF will experience up to 4 consecutive instances of disruption, each lasting up to 5 minutes.
During each instance, customer service using the WAF will be unavailable for up to 5 minutes.
We have taken steps to minimise disruption where possible; however, due to the nature of the changes being made, we require all traffic to be halted while configuration is synchronised between infrastructure components.
Updates
Updates will be provided as required.
Affected services
Web Application Firewall (WAF)