[NeMo-DDoS-List] FW: [Geant NeMo] #256497 END WARN: IUCC (AS378) - "4 alerts" [Customer] [Email_Analysis] [IUCC]

[Hank Nussbacher]

________________________________________
From: nemo-ddos at host.geant.org <nemo-ddos at host.geant.org>
Sent: Monday, July 20, 2026 4:49:14 AM (UTC+02:00) Jerusalem
To: soc at geant.org
Subject: [Geant NeMo] #256497 END WARN: IUCC (AS378) - "4 alerts" [Customer] [Email_Analysis] [IUCC]

Observed <= 0 alerts, closing.Alert closed.

Alert ID: 256497
Status: Closed
Severity: Warning

Start Time: 2026-07-20 01:36:56
End Time: 2026-07-20 01:49:03
Start Time (Europe/Berlin): 2026-07-20 03:36:56
End Time (Europe/Berlin): 2026-07-20 03:49:03
Duration: 13 min

First Event Seen: 2026-07-20 01:34:00
Last Event Seen: 2026-07-20 01:39:00
Event Count: 12

Trigger: Multiple Alerts (ID 31)

Alert Description:
Aggregated 4 alerts.

Affected Objects:
        Type              Name       Event Count
---------------------------------------------------
Autonomoussystem    IUCC (AS378)          12

Child Alerts:
  Alert ID                    Description
--------------------------------------------------------------
256493      Abnormal ratio of SYN packets to ACK packets.
256494      High TCP packet rate.
256495      High SYN packet rate.
256496      High packet rate.


Further Details:
https://secondary.nemo.geant.org/alerts/details/256497/

All times expressed in UTC.