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Internet Storm Center

The ISC was created in 2001 following the successful detection, analysis, and widespread warning of the Li0n worm. Today, the ISC provides a free analysis and warning service to thousands of Internet users and organizations, and is actively working with Internet Service Providers to fight back against the most malicious attackers. 

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Know your Enemy: Tracking Botnets

These days, home PCs are a desirable target for attackers. Most of these systems run Microsoft Windows and often are not properly patched or secured behind a firewall, leaving them vulnerable to attack. In addition to these direct attacks, indirect attacks against programs the victim uses are steadily increasing. Examples of these indirect attacks include malicious HTML-files that exploit vulnerabilities in Microsoft's Internet Explorer or attacks using malware in Peer-to-Peer networks. Especially machines with broadband connection that are always on are a valuable target for attackers. As broadband connections increase, so to do the number of potential victims of attacks. Crackers benefit from this situation and use it for their own advantage. With automated techniques they scan specific network ranges of the Internet searching for vulnerable systems with known weaknesses. Attackers often target Class B networks (/16 in CIDR notation) or smaller net-ranges. Once these attackers have compromised a machine, they install a so called IRC bot - also called zombie or drone - on it. Internet Relay Chat (IRC) is a form of real-time communication over the Internet. It is mainly designed for group (one-to-many) communication in discussion forums called channels, but also allows one-to-one communication.  

Clicked: 11 Added: 2005-03-16 09:08:45 - Bad URL? Report it

Linux Encryption Howto

The Crypto API is an approach to unify the interface between kernel modules using crypto routines (such as the loop_gen driver or CIPE (eventually?)) and kernel modules providing crypto routines (such as cipher or hash modules). It shows up as the ``Crypto Options'' menu in make menuconfig. At the time of this writing (Sep 2000), only the crypto loop device driver (CONFIG_BLK_DEV_LOOP_GEN) uses this facility and not all ciphers contained in the international kernel have been integrated into the Crypto Library. It is obviously desirable that all kernel modules using strong encryption use the Crypto API (where applicable).  

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MD5 Crack

MD5CRK is a new distributed computing project. Our goal is to demonstrate that the MD5 message digest algorithm is no longer appropriate for many cryptographic applications such as checksums and digital signatures. 

Clicked: 58 Added: 2004-09-20 14:57:30 - Bad URL? Report it

mod_ssl: FAQ

Table Of Contents About the module What is the history of mod_ssl? Apache-SSL vs. mod_ssl: differences? mod_ssl/Apache versions? mod_ssl and Year 2000? mod_ssl and Wassenaar Arrangement? About Installation Core dumps for HTTPS requests? Core dumps for Apache+mod_ssl+PHP3? Undefined symbols on startup? Permission problem on SSLMutex About Configuration HTTP and HTTPS with a single server? Where is the HTTPS port? How to test HTTPS manually? Why does my connection hang? How to switch with relative hyperlinks? About Certificates What are Keys, CSRs and Certs? Difference on startup? How to create a dummy cert? How to create a real cert? How to create my own CA? How to change a pass phrase? How to remove a pass phrase? How to verify a key/cert pair? Bad Certificate Error? Why does a 2048-bit key not work? Why is client auth broken? How to convert from PEM to DER? Verisign and the magic getca program? Global IDs or SGC? About SSL Protocol Why has the server a higher load? Which ciphers are supported? HTTPS and name-based vhosts The lock icon in Netscape locks very late Why do I get I/O errors with my MSIE clients? Why do I get I/O errors with my NS clients? About Support Resources in case of problems? Support in case of problems? How to write a problem report? I got a core dump, can you help me? How to get a backtrace? 

Clicked: 7 Added: 2005-05-25 00:17:03 - Bad URL? Report it

Norman Sandbox Information Center

Test Norman's proactive antivirus module by submitting a suspicious file! The Norman SandBox information center (NSIC) is based on Norman's unique SandBox technology which makes it possible to catch viruses and other malicious software before virus signatures have been released. This powerful tool gives you the opportunity to check if there is any malware (i.e. viruses, internet worms, trojans, etc) in the file submitted to the NSIC system. 

Clicked: 93 Added: 2004-10-01 10:02:47 - Bad URL? Report it

OpenSSL Apache self signed server certificates quickstart howto help with RSA DSA SSL TLS

OpenSSL Apache self signed server certificates quickstart howto help with RSA DSA SSL TLS I struggled for a while to get Apache 2 running with both RSA and DSA keys and self signed certificates. I've developed a little bash script that both documents the process and does it for you if you like. I wanted to share my results to hopefully save others the headache I had in gathering all this information and testing and tweaking until it all worked correctly. Below are three scripts. First, makersa.sh, to generate RSA keys and certificate requests. Next, makedsa.sh, to generate DSA keys and cretificate requests. And last a slightly modified generic script from Ralf Engelschall to sign the certificates which is called by each of the first two scripts. All you need to do to create a complete set of RSA key/cert is "./makersa.sh" and similarly for DSA, "./makedsa.sh". A copy of this article is archived at: http://john.masinter.net/pub/openssl.html Hope this helps at least one person out there. Happy and secure web serving to all! 

Clicked: 13 Added: 2005-03-13 23:44:56 - Bad URL? Report it

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