Is DHCP a security threat?
Almost all access points have DHCP (Dynamic Host Configuration Protocol) enabled by default so that they will automatically hand out IP addresses to any workstation that connects to them. In a way, DHCP is an indirect security issue because you are simply handing a hacker an IP address related to your network. On the other hand though, most access points will not issue an IP address until a station’s WEP (Wired Equivalent Privacy) pass phrase has been verified.