[Dshield] Block list

Ly Nguyen LNguyen at lgc.com
Wed Oct 24 15:17:10 GMT 2001


For the Class D, E, and Unallocated blocks, you can summarize to:

224.0.0.0/3

Can you clarify the "special use" blocks: 192.0.2.0/24, and 169.254.0.0/16?


Thank you,

Ly Nguyen
Landmark Graphics

-----Original Message-----
From: M. D. Squiers [mailto:maddog at cybernet.com]
Sent: Wednesday, October 24, 2001 8:10 AM
To: dshield at dshield.org
Subject: [Dshield] Block list


This looks like it will merge well with the blocks list I generate based 
upon snort results.  Having this be a text file will make automating 
this easy, too.

There are some other default that might be considered:

These are other "special use" (http://www.isi.edu/~bmanning/dsua.html) 
blocks:
192.0.2.0/24
169.254.0.0/16

And for DOS reasons...

# Class D Reserved
224.0.0.0/4
# Class E Reserved
240.0.0.0/5
# Unallocated
248.0.0.0/5

# Simplify the 172's as
172.16.0.0/12

Hope this helps,
MD Squiers,
Network Engineering,
Cybernet Systems Corp.
http://www.cybernet.com/

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