Many exploits, however, take advantage of those who do not change their home router default passwords, so this should be one of the first things that's addressed if the enterprise is provisioning users' home routers, along with other insecure default settings. Minimally, be sure to securely configure the equipment you provide users and offer guidance or direct them to external resources on how to secure their home network if they are using their own equipment to access the enterprise network.
The bigger question is how to secure the computer that is in use at home and the connection between the computer and the enterprise network. You may want to assume that the local network or any network is hostile, and configure users' computers and remote connections to be resilient to attacks by using a host-based firewall and verifying that connections to your network are secure. Even if securing the home network is a losing battle, the most important points are to configure your computers securely, provide secure remote access to your enterprise network by using a VPN or similar technologies, and educate your users with basic information security skills to help prevent serious security issues.
This was first published in August 2010