<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=us-ascii"> <meta name="Generator" content="Microsoft Exchange Server">  <style></style> </head> <body> <font face="Arial" size="2"><span style="font-size:11pt;"> <div>Hello,</div> <div> </div> <div>has anybody experience with botnet detection in isp networks? We want to use netflow data to handle this issue (no deep paket inspection).</div> <div>Our idea is to match the netflow data with different command and control server blacklists. </div> <div> </div> <div>Do anybody know where I can find up-to-date lists for free or service companies who offer such a blacklist service?</div> <div> </div> <div>Thanks for your help. </div> <div> </div> <div>Kind regards,</div> <div>Kay Ehrlich</div> <div>envia TEL GmbH - an isp in Central Germany</div> <div>kay.ehrlich@enviatel.de</div> <div><font size="2"><span style="font-size:10pt;"> </span></font></div> <div><font size="2"><span style="font-size:10pt;"> </span></font></div> <div><font size="2"><span style="font-size:10pt;"> </span></font></div> </span></font> </body> </html>