When using ettercap on my network with arp poisoning i'm running into weird things under my windows target machine. For one, its asking for certs half the time when logging on, and ettercap crashes out, suddenly and silently. all the other man in the middle options just make my network notwork... so i was wondering if there's a comprehensive tutorial somewhere about using this tool, or maybe something like it but a bit newer (sourceforge seems to indicate that its almost 3 yrs old).