INFORMATION on some aspects of Internet Communication

Security

Latest Security News Headlines.
Our Computer and Internet Security forum.

Anti-spam, bad bots

Some anti-spam measures to fight SPAM.
How to build a bot trap to catch bad bots.
DNSBL: how does a DNS Blackhole List work, and how to build an own.
Multi DNSBL-check: online tool to look up an internet IP v4 address to see if it is blacklisted on several common public DNS blackhole lists as known spam source.
List of bad bots I have seen violating the robots.txt standard, current.
List of bad bots, historic listings 2005.
List of bad bots, historic listings 2004.
List of bad bots, historic listings 2002 ... 2003.
Mail address harvesting by Spam Bots.
SPAM advertized links though Google.

Other stuff

Recommended Books about Networking.
What is an Autonomous System (AS) and an AS number (ASN)?
Articles and pages about web page design.
A current International List of Countries of this world, dated 2000-04-01. (48 Kbytes).
Historical information about the DL4TA AMPR.ORG packet radio stuff, dated 1997-11-05.
See also my services page for interactive online tools: nslookup, dig, whois, serverinfo (http headers), iplocate, ping, traceroute.
For German readers: an interesting article about Schnitzelmitkartoffelsalat.

If you have comments, or if you just found one of these items useful, please drop me a line.
Your feedback is highly appreciated.

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