Ez a tartalom nem érhető el az Ön nyelvén, csak angol nyelven.

TCP and UDP Port Assignments

Transport Control Protocol (TCP), User Datagram Protocol (UDP) ports, and Protocol Numbers are important to TCP/IP networking, intranets, and the Internet. Ports and protocol numbers provide access to a host computer. However, they also create a security hazard by allowing uninvited access. Therefore, knowing which port to allow or disable increases a network's security. If the wrong ports or protocol numbers are disabled on a firewall, router, or proxy server as a security measure, essential services might become unavailable.

In This Appendix

Port Assignments and Protocol Numbers

Port Assignments for Commonly-Used Services

Protocol Numbers

Related Information in the Resource Kit