[NeMo-DDoS-List] FW: [Geant NeMo] #244244 UPD CRIT: IUCC (AS378) - "5 alerts" [Customer] [IUCC] [Email_Analysis]

[Hank Nussbacher]

________________________________________
From: nemo-ddos at host.geant.org <nemo-ddos at host.geant.org>
Sent: Wednesday, April 22, 2026 5:50:58 PM (UTC+02:00) Jerusalem
To: soc at geant.org
Subject: [Geant NeMo] #244244 UPD CRIT: IUCC (AS378) - "5 alerts" [Customer] [IUCC] [Email_Analysis]

Aggregated 5 alerts. Upgraded to severity Critical.

Alert ID: 244244
Status: Open
Severity: Critical

Start Time: 2026-04-22 14:45:52
End Time: ongoing
Start Time (Europe/Berlin): 2026-04-22 16:45:52
End Time (Europe/Berlin): ongoing
Duration: 5 min

First Event Seen: 2026-04-22 14:43:00
Last Event Seen: 2026-04-22 14:49:00
Event Count: 28

Trigger: Multiple Alerts (ID 31)

Alert Description:
Aggregated 5 alerts.

Affected Objects:
        Type              Name       Event Count
---------------------------------------------------
Autonomoussystem    IUCC (AS378)          28

Child Alerts:
  Alert ID                    Description
--------------------------------------------------------------
244242      High SYN packet rate.
244243      Abnormal ratio of SYN packets to ACK packets.
244245      High ACK packet rate.
244246      High TCP packet rate.
244247      High packet rate.


Further Details:
https://secondary.nemo.geant.org/alerts/details/244244/

All times expressed in UTC.