... Apache HTTP Server Version 2.2 . ... Configuring Apache to listen on specific addresses and ports. ... Special IPv6 Considerations . ... Listen . When Apache starts, it binds to some port and address on the local machine and waits for incoming requests. ... The Listen directive tells the server to accept incoming requests only on the specified ports or address-and-port combinations. ... For example, to make the server accept connections on both port 80 and port 8000, on all interfaces, use: . ...