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Warum gibt es in der Datei „Blocks.log“ der F-Secure- Firewall viele Einträge zum Port-Scanning-Schutzfilter?

Issue:

Dieser Artikel gilt für die folgenden F-Secure-Produkte: F-Secure Client Security 14.x / 15.x, F-Secure Server Security 14.x, / 15.x und Elements Endpoint Protection-Produkte

Ich sehe viele der folgenden Einträge im Firewall -Blocks.log:


[xxxx.xxxx]  I: Type: FWPM_NET_EVENT_TYPE_CLASSIFY_DROP. Dropped by filter: Port Scanning Prevention Filter, This filter prevents port scanning. This many times means there are no listeners. If debugging ensure your scenario has one.

Die Verbindungsparameter variieren mit unterschiedlichen lokalen/Remote-Ports und IP-Adressen. Muss ich meine Firewall Regeln ändern, damit diese Meldungen verschwinden?

Resolution:

Diese Protokolleinträge sind mit dem Stealth-Modus- Mechanismus in der Windows-Firewall mit erweiterter Sicherheit verknüpft. Dabei handelt es sich um eine integrierte Funktion, die ausgehende ICMP-Unreachable- und TCP-Reset-Meldungen stillschweigend verwirft, um Port-Scans zu verhindern. Diese Funktionalität reagiert, wenn kein Prozess auf dem Port lauscht, auf den die eingehende Anfrage/der eingehende Datenverkehr abzielt.

Weitere Informationen zu dieser Funktionalität finden Sie in diesem Microsoft Technet- Artikel .

Article no: 000012637

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