Once you have configured your switch for secure file transfers with SCP and SFTP, files can be copied to or from the switch in a secure (encrypted) environment and TFTP is no longer necessary. Several SFTP commands, such as create or remove, are not allowed and return an error message. The switch supports one SFTP session or one SCP session at a time.Īll files have read-write permission. You do not need to (nor can you) create new files. All of the necessary files the switch needs are already in place on the switch. Files may be only uploaded or downloaded, according to the permissions mask. No file or directory creation is permitted by the user. When an SFTP client connects, the switch provides a file system displaying all of its available files and folders. New features: (STK-1554) AnyStock Flex Component. (STK-1555) Sometimes component crashes, when case data set contains missing points in the last row is - bug fix. I 01/09/13 16:17:07 00150 update: Primary Image updated. (STK-1496) External JavaScript method applySettingsChanges() was not able to switch data grouping on or off - bug fix. SFTP works only with SSH version 2 (SSH v2). You can use SFTP just as you would TFTP to transfer files to and from the switch, but with SFTP, your file transfers are encrypted and require authentication, so they are more secure than they would be using TFTP. If you try to issue commands such as create or remove using SFTP, the switch server returns an error message. Certain commands are not allowed by the SFTP server on the switch, such as those that create files or folders. Once you set up an SFTP session through an SSH tunnel, some of the commands are the same as FTP commands. SFTP is unrelated to FTP, although there are some functional similarities. You can also roll out new software images with automated scripts that make it easier to upgrade multiple switches simultaneously and securely. Using SCP and SFTP allows you to maintain your switches with greater security. This is a plain-text mechanism that connects to a standalone TFTP server or another HP switch acting as a TFTP server to obtain the software image files. There are differences in the way these clients work, so be sure you also download the documentation.Īs described earlier in this chapter you can use a TFTP client on the administrator workstation to update software images. Most of these are freeware and may be downloaded without cost or licensing from the internet. Some examples of software that supports SFTP and SCP are PuTTY, Open SSH, WinSCP, and SSH Secure Shell. To use these commands, you must install on the administrator workstation a third-party application software client that supports the SFTP and/or SCP functions. Once you have configured your switch to enable secure file transfers with SCP and SFTP, files can be copied to or from the switch in a secure (encrypted) environment and TFTP is no longer necessary. Essentially, you are creating a secure SSH tunnel as a way to transfer files with SFTP and SCP channels. SCP and SFTP provide a secure alternative to TFTP for transferring information that may be sensitive (like switch configuration files) to and from the switch. By opening a secure, encrypted SSH session and enabling ip ssh file transfer, you can then use a third-party software application to take advantage of SCP and SFTP. It now uses the Raspberry Pi and Arduino embedded processors for all mobile robot systems.For some situations you may want to use a secure method to issue commands or copy files to the switch. In this 4th edition the text has been thoroughly updated and extended. The book is written as a text for courses in computer science, computer engineering, IT, electronics engineering, and mechatronics, as well as a guide for robot hobbyists and researchers. It is structured in four parts, dealing with Embedded Systems (processors, sensors, actuators, control, multitasking and communication), Robot Hardware (driving and walking robots, autonomous boats and planes, as well as robot manipulators), Robot Software (localization, navigation, image processing and automotive systems), and Artificial Intelligence (neural networks, genetic algorithms and deep learning). The book is organized for ease of use, with numerous figures, photographs, and worked example programs. This textbook presents a unique examination of mobile robots and autonomous vehicles using embedded systems, from introductory to advanced level.
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