Shulou(Shulou.com)06/03 Report--

Scope: a complete IP address range, according to which the DHCP protocol manages the distribution of the network, assigns IP addresses, and other configuration parameters.

Super scope: used to manage multiple logical subnet segments in the same physical network. The super scope contains a list of scopes that can be managed uniformly.

Exclude scope: exclude some IP addresses in the scope to ensure that these IP addresses are not assigned to DHCP clients.

Address pool: after defining the scope of the DHCP and applying the exclusion range, the rest is used to dynamically assign the IP address range to the DHCP client.

Lease: the time during which a DHCP client can use a dynamically assigned IP address.

Reservation: make sure that specific devices in the network always get the same IP address.

There are only three lines of comment statements in the configuration file of dhcp's service program, which means that we need to write this file ourselves. If the reader doesn't know how to write it, take a look at the reference sample file on line 2 of the configuration file, which is structured as shown in figure 14-2.

A standard configuration file should include global configuration parameters, subnet segment declarations, address configuration options, and address configuration parameters. Among them, the global configuration parameter is used to define the overall running parameters of the dhcpd service program, and the subnet network segment declaration is used to configure the address attribute of the entire subnet segment.

Common mail protocols include the following.

Simple Mail transfer Protocol (Simple Mail Transfer Protocol,SMTP): used to send and forward emails that occupy the 25/TCP port of the server.

Post Office Protocol version 3 (Post Office Protocol 3): used to store e-mail to the local host, occupying the server's 110/TCP port.

Internet message access Protocol version 4 (Internet Message Access Protocol 4): used to access mail on the local host, occupying the server's 143/TCP port.

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.