Team Cymru Reading Room / Documents
Team Cymru is a specialized security research firm dedicated to making the Internetmore secure. By researching the 'who' and 'why' of malicious Internet activity worldwide,Team Cymru helps organizations identify and eradicate problems in their networks.
Here is a repository of various articles we have written over the years about:
Security UNIX Networking Presentations
ICMP Packet Filtering v1.2 - 12 MAR 2003 - A guide that details the minimum ICMP message types that should be allowed into and out of any network.
Bogon List - A list of bogons, IP routes that should not appear in the Internet routing table or as the source of IP packets. This list is handy for generating filters and the like, and includes dotted decimal notation, bit notation, Cisco ACLs, and Juniper prefix-list formats.
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