diff --git a/cheatsheets/packetlife.net/IEEE_802.11_WLAN.pdf b/cheatsheets/packetlife.net/IEEE_802.11_WLAN.pdf new file mode 100644 index 0000000..0be97a9 Binary files /dev/null and b/cheatsheets/packetlife.net/IEEE_802.11_WLAN.pdf differ