This past weekend, I blew out my linux install to check out Redhat's Fedora Core 3 and for the 3rd time went though getting dsniff 2.3 installed with the WiFi patch. Everytime I've done this, I've forgotten how and had to re-learn it. Here are the steps. Setup your system 1. Install Redhat Fedora Core 3 with 'All' packages (feel free to try with less, but I've got the drive space and wanted to deal with as little dependencies as possible). 2. Get the latest MadWifi drivers out of CVS: cvs -z3 -d:pserver:anonymous@cvs.sourceforge.net:/cvsroot/madwifi co madwifi 3. Compile and reboot 4. Make sure your wifi card is working. Install DSniff 4. Download and compile/install Libnet-1.02a: http://www.packetfactory.net/libnet/dist/deprecated/libnet-1.0.2a.tar.gz 5. Get libnids 1.18 out of sourceforge: http://sourceforge.net/project/showfiles.php?group_id=92215&package_id=97542&release_id=191323 6. Download the patch to allow for wireless dsniffing in rfmon mode: http://airsnort.shmoo.com...