Sciatica is nerve pain from irritation of the sciatic nerve. The sciatic nerve is the largest nerve in the body. The sciatic nerve begins from nerve roots in the spinal cord in the low back and extends through the buttock area to send nerve endings down the lower limb.
Aircrack-ng is a network software suite consisting of a detector, packet sniffer, WEP and WPA/WPA2-PSK cracker and analysis tool for 802.11 wireless LANs. It works with any wireless network interface controller whose driver supports raw monitoring mode and can sniff 802.11a, 802.11b and 802.11g traffic.
The best program to sniff LAN activity is Cain and Abel, the best program for Wireless is Aircrack-ng and its compatible with most WLAN cards, I suggest if you buy a card, make sure its chipset is atheros because atheros chipset is compatible with Aireplay, Aireplay is the app you use to inject packets on the WLAN.