[NeMo-DDoS-List] FW: [Geant NeMo] #245171 UPD 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: Saturday, April 25, 2026 2:21:57 PM (UTC+02:00) Jerusalem
To: soc at geant.org
Subject: [Geant NeMo] #245171 UPD CRIT: IUCC (AS378) - "4 alerts" [Customer] [IUCC] [Email_Analysis]

Aggregated 4 alerts. Upgraded to severity Critical.

Alert ID: 245171
Status: Open
Severity: Critical

Start Time: 2026-04-25 11:17:46
End Time: ongoing
Start Time (Europe/Berlin): 2026-04-25 13:17:46
End Time (Europe/Berlin): ongoing
Duration: 4 min

First Event Seen: 2026-04-25 11:15:00
Last Event Seen: 2026-04-25 11:20:00
Event Count: 22

Trigger: Multiple Alerts (ID 31)

Alert Description:
Aggregated 4 alerts.

Affected Objects:
        Type              Name       Event Count
---------------------------------------------------
Autonomoussystem    IUCC (AS378)          22

Child Alerts:
  Alert ID                    Description
--------------------------------------------------------------
245169      High SYN packet rate.
245170      Abnormal ratio of SYN packets to ACK packets.
245172      High TCP packet rate.
245173      High packet rate.


Further Details:
https://secondary.nemo.geant.org/alerts/details/245171/

All times expressed in UTC.