nanog mailing list archives

Re: DSL-IP Probes Curiousity..


From: "Scott Granados" <scott () wworks net>
Date: Thu, 13 Mar 2003 21:56:45 -0800


What does unknown mean?  And how can you count it if its unknown?  Not being
silly, genuinely curious.

----- Original Message -----
From: "Sean Donelan" <sean () donelan com>
To: <nanog () merit edu>
Sent: Thursday, March 13, 2003 9:30 PM
Subject: Re: DSL-IP Probes Curiousity..



On Thu, 13 Mar 2003, McBurnett, Jim wrote:
I am just curious about this.
I see a rather unusual # of SNMP queiries
and port scans from  DSL
IP blocks in the US...

How many of you really go after the script kiddies
doing this?

I know 1, 2 or even 3 a day is not a concern for me,
but when I get 3 a day from the same source IP allocation,
I start wondering...

I know people like to use sensational terms like "pre-attack
reconnaissance" and "DOS attacks." There is a constant background
hum on today's Internet, some of it is malicious, some of it is
badly managed systems. Between automated web spiders, academics doing
network discovery, automated worms, and badly designed "plug-n-play"
software, your IDS system should be seeing stuff all the time.

The Pentagon used to report amazing numbers for "network attacks,"
anything from a single ping up to a full scale network compromise, but I
haven't found recent numbers for 2002 or later.

FedCIRC put out these numbers for 2002.

Count Type
125 Root compromise
111 User compromise
46 Web Site Defacement
488,000 Reconnaissance Activity
36 Denial of Service
265 Malicious Code
22 DNS Attack
39 Misuse of Resources
1,268 Unknown





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