FTP service is used to transfer files to and from the router. For example, system
image files, backup configs, and syslog data can be transferred to or from the router. This service must be disabled to prevent
unauthorized reading and writing from the router.
By default, FTP server service is disabled on all IOS versions. If this service has been enabled, it can be disabled using the no
ftp-server enable command from the global configuration mode.
Autoloading Device Configuration
Cisco IOS offers the facility to autoload device configuration directly from a server on the network to the device. There are
several methods to achieve this, but none of them are recommended, because the process of passing the configuration file down
to the device is in clear text and subject to unauthorized viewing in transition. Example 3-7 shows how to disable autoloading configuration files from a network server.
Example 3-7. Disable Autoloading Device Configuration
Router(config)# no service config
Router(config)# no boot network
PAD
PAD service is used to enable all packet assembler/disassembler (PAD) commands and connections between PAD devices and
access servers. By default, all PAD commands and associated connections are enabled.
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