Tagged: ssh

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What Is Default SFTP Port and How To Change SFTP Port Number?

SFTP is secure version of the FTP . SFTP provides encrypted channel with the remote server. This makes authentication and data transfer more secure than FTP. SFTP protocol is generally provided by SSH servers by default. In this tutorial we will learn the default SFTP port and how to change...

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How To Find And Change SSH Port Number?

ssh  is default protocol used to manage remote systems which are mainly Linux and Network Devices. As it is working over network connection and uses TCP it has a default port number which is 22  . In this tutorial we will look how to change the default port number from...

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How To Install and Use Telnet Client In Linux and Windows

Telnet is easiest remote management protocol used in Computer networks. It remains popular even today because of its simplicity. Telnet is a client server protocol where clients uses telnet tool which to connect remote telnet server. This telnet server may be switch, router, windows operating system, linux server or a...

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How To Solve ssh-copy-id “ERROR: failed to open ID file” Error

ssh provides secure access to the remote systems console or command line. All linux boxes uses ssh securely. There are a lot of steps to make things secure and easy while connecting and using ssh. ssh provides passwordless authentication with certificates. We can use ssh-copy-id to send our certificate to the remote system but...

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Pssh – Execute Commands On Multiple Remote Linux Servers Using Local System

ssh  is very useful protocol and tool used by Linux system administrators. It provides easy, secure and fast access to the remote systems and servers. It also provides file copy between local and remote systems securely. But in an enterprise environment we generally need to run single command on multiple...

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How to Add Ssh Keys with ssh-add In Linux?

SSH protocol provides different ways for authentication. Key based authentication is the most secure one. In order to use key based authentication we should store the key in a command place. SSH agents reads keys and uses for authentication with remote system. We can use ssh-add to store keys in a...

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How To Login To Linux with Passwordless via SSH with Key Based Authentication?

Ssh provides secure remote connections to the remote systems. It is defacto protocol used to manage Linux and networking systems remotely via command line. Ssh provides a lot of extra features which makes it useful for different purposes. For example we can copy files to remote and local system via...

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Linux Ssh Tunneling or Port Forwarding Local and Remote Ports with Examples?

Ssh protocol secure remote connections which is shell or terminal based to the remote systems. Ssh protocol and tool provides more than that. We can use ssh to create tunnels over local and remote systems or connect remote system X server. In this tutorial we will look how to tunnel and...

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What is Ftp Port Numbers and How Ftp Port Used?

Ftp or File Transfer Protocol is popular protocol used to transfer data, file, directory over networks. These networks may be our local network or internet. FTP has simple mechanisms which makes is easy to implement and use. In this tutorial we will look some FTP related information like port numbers,...

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How To Specify Host, Port and Protocol For Tcpdump?

Tcpdump is everyday tool used by system and network administrator. We generally look simple use cases like host, port and protocol filter for tcpdump . In this tutorial we will look how to filter host, port and protocol in tcpdump. But keep in mind that tcpdump will requires administrator or root...

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