[NeMo-DDoS-List] FW: [Geant NeMo] #199743 UPD WARN: IUCC (AS378) - "Warning: Abnormal SYN:ACK ratio: 151k ACK Packets/s, 200k SYN Packets/s" [IUCC] [Customer] [Email_Analysis]

[Hank Nussbacher]

________________________________________
From: nemo-ddos at geant.org <nemo-ddos at geant.org>
Sent: Sunday, October 22, 2023 4:28:34 AM (UTC+02:00) Jerusalem
To: soc at geant.org
Subject: [Geant NeMo] #199743 UPD WARN: IUCC (AS378) - "Warning: Abnormal SYN:ACK ratio: 151k ACK Packets/s, 200k SYN Packets/s" [IUCC] [Customer] [Email_Analysis]

Warning: Observed abnormal SYN:ACK packet ratio with
  151k ACK Packets/s, 200k SYN Packets/s
on
  autonomoussystem IUCC (AS378).

Alert ID: 199743
Status: Open
Severity: Warning

Start Time: 2023-10-22 01:04:15
End Time: ongoing
Start Time (Europe/Berlin): 2023-10-22 03:04:15
End Time (Europe/Berlin): ongoing
Duration: 25 min

First Event Seen: 2023-10-22 01:02:00
Last Event Seen: 2023-10-22 01:27:00
Event Count: 17

Trigger: Abnormal SYN / ACK Ratio (AS) (Email_Anal) (ID 59)

Alert Description:
Abnormal SYN:ACK packet ratio

Affected Objects:
        Type              Name       Event Count
---------------------------------------------------
Autonomoussystem    IUCC (AS378)          17



Further Details:
https://primary.nemo.geant.org/alerts/details/199743/

All times expressed in UTC.