dwww ships with access to localhost only, but that may not become evident until you try to actually use it from another host. In this case I was trying to browse some documentation from a tablet. Its configuration for Apache is under:
To change its access permissions, alter the lines that begin with “Require ip” to your own subnet and uncomment them (remove the # at the beginning of the line). If you’re on a network beginning in 10. use a /16 CIDR prefix, if you’re on a 192.168. use /24.