The invention provides a firewall traversal method, equipment and
system based on
web page browser communication. A source terminal sends signaling messages including port limited signs to a
WebRTC server, sign information of a first port and a media
stream corresponding to communication interaction are sent to a corresponding second port of a
websocket server according to the address information of the
websocket server in signaling response messages fed back by the
WebRTC server and the sign information of the first port, the second port belongs to an
open port corresponding to the source terminal, the
websocket server forwards the media
stream to a target terminal through a port corresponding to the sign information of the first port according to the
address mapping relation which is stored in the
WebRTC server and corresponds to the sign information of the first port, therefore, firewall traversal based on the
web page browser communication in enterprise networks is achieved, communication safety of enterprise intranets is guaranteed, meanwhile, and flexibility of communication services and the compatibility and
coupling degree of existing communication services are improved.