Device and subscriber security can be a serious concern for broadband service providers. In the provisioning space, DHCP relay is a potential entry point for security threats. For instance, if there is no authentication or authorization during an exchange between a DHCP server and DHCP client, the server cannot determine whether the client requesting the address is legitimate. Rogue clients and servers can create a number of problems, including denial of service, installation of unauthorized software, exposure of sensitive information, and hijacking of DNS servers. It’s therefore essential to include DHCP access control in your network security considerations.