[NeMo-DDoS-List] FW: [Geant NeMo] #221749 UPD WARN: IUCC (AS378) - "Still high SYN packet rate: 399k SYN Packets/s" [IUCC] [Customer] [Email_Analysis]

[Hank Nussbacher]

________________________________________
From: nemo-ddos at host.geant.org <nemo-ddos at host.geant.org>
Sent: Wednesday, November 19, 2025 4:31:54 PM (UTC+02:00) Jerusalem
To: soc at geant.org
Subject: [Geant NeMo] #221749 UPD WARN: IUCC (AS378) - "Still high SYN packet rate: 399k SYN Packets/s" [IUCC] [Customer] [Email_Analysis]

Still high SYN packet rates of
  399k SYN Packets/s
on
  autonomoussystem IUCC (AS378).

Upgraded to severity Warning.

Alert ID: 221749
Status: Open
Severity: Warning

Start Time: 2025-11-19 14:19:47
End Time: ongoing
Start Time (Europe/Berlin): 2025-11-19 15:19:47
End Time (Europe/Berlin): ongoing
Duration: 12 min

First Event Seen: 2025-11-19 14:17:00
Last Event Seen: 2025-11-19 14:30:00
Event Count: 6

Trigger: High SYN Packet Rate (AS) (Email_Analysis+threshold) (ID 69)

Alert Description:
High SYN packet rate.

Affected Objects:
        Type              Name       Event Count
---------------------------------------------------
Autonomoussystem    IUCC (AS378)          6



Further Details:
https://secondary.nemo.geant.org/alerts/details/221749/

All times expressed in UTC.