What
A DDoS attack targeted a customer routed on legacy infrastructure. This infrastructure was not set up to accept our DDoS filtering policies and did not have sufficient capacity to handle the attack. This caused service impact for customers connected to our access routers in Doetinchem.
When
- Start of incident: 2021-07-07 17:48:40 (CEST)
- End of incident: 2021-07-07 18:51:00 (CEST)
Impact
- Customers only present in OUM and DEL were completely unaffected by this incident.
- During the incident, severe packet loss could be observed for the customers connected to the routers in Doetinchem.
- For customers connected to the affected infrastructure, the network wasn't completely unreachable for the entire length of the incident. This means reports for 'flapping', but not completely down connections could also be related to this incident.
Improvements
- We are now actively migrating customers away from the legacy infrastructure towards our new datacenters. This applies for all customers who do not require L1 or L2 connectivity in Doetinchem.
- The capacity to the network backbone of the infrastructure in Doetinchem has been doubled, to better cope with large volumetric attacks.
In case you have any questions or comments regarding this incident, please get in touch with us at support@novoserve.com !
