[NeMo-DDoS-List] FW: [Geant NeMo] #243971 END CRIT: IUCC (AS378) - "4 alerts" [Customer] [IUCC] [Email_Analysis]

[Hank Nussbacher]

________________________________________
From: nemo-ddos at host.geant.org <nemo-ddos at host.geant.org>
Sent: Tuesday, April 21, 2026 7:08:14 PM (UTC+02:00) Jerusalem
To: soc at geant.org
Subject: [Geant NeMo] #243971 END CRIT: IUCC (AS378) - "4 alerts" [Customer] [IUCC] [Email_Analysis]

Observed <= 0 alerts, closing.Alert closed.

Alert ID: 243971
Status: Closed
Severity: Critical

Start Time: 2026-04-21 15:53:55
End Time: 2026-04-21 16:08:02
Start Time (Europe/Berlin): 2026-04-21 17:53:55
End Time (Europe/Berlin): 2026-04-21 18:08:02
Duration: 15 min

First Event Seen: 2026-04-21 15:51:00
Last Event Seen: 2026-04-21 15:58:00
Event Count: 29

Trigger: Multiple Alerts (ID 31)

Alert Description:
Aggregated 4 alerts.

Affected Objects:
        Type              Name       Event Count
---------------------------------------------------
Autonomoussystem    IUCC (AS378)          29

Child Alerts:
  Alert ID                    Description
--------------------------------------------------------------
243968      High packet rate.
243969      Abnormal ratio of SYN packets to ACK packets.
243970      High TCP packet rate.
243972      High SYN packet rate.


Further Details:
https://secondary.nemo.geant.org/alerts/details/243971/

All times expressed in UTC.