A number assigned to user sessions and server applications in an IP network. Port numbers, which are standardized by the Internet Assigned Numbers Authority (IANA), reside in the header area of the ...

Firewalls are devices that help keep your computer safe from threats on networks. Windows includes a program called Microsoft Firewall to maintain system security. There may be occasions when you need ...

The numeric identification of the upper layer protocol that an IP packet should be sent to. The number is stored in the header that is prefixed to an IP packet. Note that the IP protocol number is not ...

File-sharing applications and other programs that access a transmission control protocol/Internet protocol network use ports to route traffic to a destination. Most routers, however, use a firewall to ...