Windows Remote logon to Linux host through SecureCRT

Source: Internet
Author: User
Tags ftp commands file transfer protocol
Windows uses SecureCRT to remotely log on to the Linux host-Linux Enterprise Application-Linux server application information. The following is a detailed description. SecureCRT is an SSH client software that provides both terminal simulators and file transfer functions. It is much more convenient than ftp commands, and the server no longer needs to enable the FTP service. Rz, sz is a command line tool for ZModem file transmission in Linux/Unix and Windows.

Windows must support the ZModem telnet/ssh client, and SecureCRT can be used to log on to Unix/Linux Hosts (either telnet or ssh ).

To upload a file, you only need to enter the command "rz" in the shell terminal simulator to select the file on the local disk from the pop-up dialog box and use Zmodem to upload the file to the server. To download a file, just enter the command "sz file name" in the shell terminal simulator, you can use Zmodem to download the file to the "path \ SecureCRT-5.1.3 \ download \" directory. You can use "File Transfer" to modify the default upload and download paths.

To change the background color and file name color of the SecureCRT terminal, click "option"-"session option" on the menu bar ", in the "terminal"-"simulation" category, select "ANSI color" and "select a backup keyboard simulation-Linux" in the right window ".

XMODEM is a widely used asynchronous file Transport Protocol for personal computer communications using a dial-up modem. This Protocol transmits data in the form of 128 bytes, and each block uses a checksum process for error detection. If the receiver's checksum for a block is the same as the sender's checksum, the receiver sends an acknowledgment byte to the sender. However, such a strategy that recognizes each block will lead to lower performance, especially when satellite connections with long propagation delays become more serious.

An XMODEM-CRC Protocol that uses cyclic redundancy verification is called XMODEM-CRC. Another is the XMODEM-1K, which transmits data in 1024 bytes. ZMODEM is the most effective version of XMODEM and does not need to be recognized by every block. In fact, it simply requires re-sending the damaged block. ZMODEM is very useful for block-based group switching networks. You do not need to acknowledge that the delivery group reduces the traffic to a large extent.

YMODEM is also an implementation of XMODEM. It includes all the features of the XMODEM-1K and also adds the batch file transfer mode for sending a group of files during a single session.

Zmodem is an enhanced form of Xmodem file transfer protocol, which not only transfers larger data but also reduces the error rate. It includes a feature called checkpoint restart. If a communication link is interrupted during data transmission, the transmission can be resumed from the breakpoint rather than from the start.

PS: Linux rz/sz these two gadgets install lrzsz-x.x.xx.rpm, Unix source code can be compiled by themselves, Solaris spac can go to sunfreeware download Execution Code.

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