10.3. Networking Access
There are various ways to access data remotely over the network. All methods are built upon the basic networking described earlier.
When communicating over a network to a host machine with TCP or UDP, a port address is used to specify the application that should receive the network request. Port numbers 0 through 1024 are reserved ports that are identical among all hosts and available only to applications with root-level privileges. There are 65536 total ports available. The /etc/services file in HP-UX describes all of the assigned networking ports.
FTP (file transfer protocol) is commonly used on UNIX system to transfer file data between machines. On HP-UX, the ftpd daemon handles listening on ...