[NeMo-DDoS-List] FW: [Geant NeMo] #214649 UPD CRIT: IUCC (AS378) - "4 alerts" [IUCC] [Customer] [Email_Analysis]

[Hank Nussbacher]

________________________________________
From: nemo-ddos at host.geant.org <nemo-ddos at host.geant.org>
Sent: Monday, September 22, 2025 5:57:59 PM (UTC+02:00) Jerusalem
To: soc at geant.org
Subject: [Geant NeMo] #214649 UPD CRIT: IUCC (AS378) - "4 alerts" [IUCC] [Customer] [Email_Analysis]

Aggregated 4 alerts. Upgraded to severity Critical.

Alert ID: 214649
Status: Open
Severity: Critical

Start Time: 2025-09-22 14:53:47
End Time: ongoing
Start Time (Europe/Berlin): 2025-09-22 16:53:47
End Time (Europe/Berlin): ongoing
Duration: 5 min

First Event Seen: 2025-09-22 14:51:00
Last Event Seen: 2025-09-22 14:56:00
Event Count: 23

Trigger: Multiple Alerts (ID 31)

Alert Description:
Aggregated 4 alerts.

Affected Objects:
        Type              Name       Event Count
---------------------------------------------------
Autonomoussystem    IUCC (AS378)          23

Child Alerts:
  Alert ID                    Description
--------------------------------------------------------------
214646      High packet rate.
214647      High SYN packet rate.
214648      High TCP packet rate.
214650      Abnormal ratio of SYN packets to ACK packets.


Further Details:
https://secondary.nemo.geant.org/alerts/details/214649/

All times expressed in UTC.