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ccna certification cost singapore.A workstation running a command-line SCP client can authenticate on the router's SCP server to securely transfer files from and to the router's flash memory. This allows the network administrator to store a backup of the router's configuration and 10S files to any secure network location. An example of a command-line SCP client is the PuTTY Secure Copy Client, which is included in the PuTTY toolset.Router-to-router SCP transfersA router acts as an SCP client when transferring files between routers. This router is able to authenticate on a router that has the SCP server feature enabled and copy files from or transfer files to that router.To troubleshoot SCP authentication problems, use the debugipscp privileged EXEC command. A successful file transfer will have several lines of text in the output ending in vOK>. The most common authentication problem is a username and password mismatch. If you do not configure a username/password on the SCP router using the privilege 15 keyword, you will have authentication failure problems.10-6 System Development Life Cycle10.6.1 Introduction to SDLC10.6.1.1 System Declaration CycleBusiness continuity and disaster recovery plans are constantly changing documents, and they must adapt to changes in the environment, equipment, and business requirements. These changes affect not only continuity planning, but all aspects of network operations as well. Documentation should be maintained and updated regularly, and security needs should be assessed on an ongoing basis.Assessing system changes and adjusting planning are both part of the system lifecycle. Remember that a "system" can refer to a single device or to a group of devices operating together in a network.314 Chapter io Managing a Secure Network