Example 3-5. Disable CDP Globally
Router# configure terminal
Router(config)# no cdp run
Alternatively, CDP can be disabled on a particular interface. The no cdp enable command from the interface configuration mode
can be used to disable CDP per interface, as shown in Example 3-6 .
Example 3-6. Disable CDP per Interface
Router# configure terminal
Router(config)# interface
Router(config-if)# no cdp enable
The show cdp neighbors [detail] command can be used to display information about directly connected Cisco devices.
TCP/UDP Small-Servers
TCP and UDP small-servers can be used to access minor services from hosts on the network. TCP small-servers access the minor
TCP services such as echo, chargen, discard, and daytime. UDP small-servers access minor UDP services such as echo, chargen,
and discard.
By default, TCP and UDP small-services are disabled on all IOS versions except in Cisco IOS Software Version 11.2 and earlier. these services have been enabled, they can be disabled using the no service tcp-small-servers and the no service udpsmall-
servers command from the global configuration mode.
Finger
The Finger protocol enables network users to obtain a list of all users currently using a device.
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