Hi,
kann man die Masse der Benachrichtigungen, speziell für Portscans [WARN-856] irgendwie tunen?
Es macht einfach keinen großen Sinn 100 und eMails in einer Minute dazu zu bekommen.
Grüße Marc
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Hi,
kann man die Masse der Benachrichtigungen, speziell für Portscans [WARN-856] irgendwie tunen?
Es macht einfach keinen großen Sinn 100 und eMails in einer Minute dazu zu bekommen.
Grüße Marc
Hallo Marc,
(Sorry, my German-speaking brain isn't creating thoughts at the moment. [:(])
Yeah, this had really gotten painful for one site at one of my clients. It's mostly attacks from what I assume is Chinese military hackers looking for any way to infiltrate. Just for fun (and at no charge), I made a Network Group "All Portscanners" containing the subnets of IPs that have scanned this site. I made a port scanning Exception for the members of this group and created a firewall Reject rule for them so that the traffic would be blocked silently and that the bad guys would get a slap in the face.
That group is up to 49 subnets. In the first three days of October, 1004 offending packets were rejected. Now, I add one Network a week to the Group as opposed to one or two a day as I did when I first started in mid-July.
August was the biggest month for rejections with over 22K packets rejected and just short of 9K in September.
I suspect the Reject rule resulted in many new portscanning attacks from other subnets controlled by the same bad guys, so you may just want to use a Drop rule instead.
MfG - Bob (Bitte auf Deutsch weiterhin.)