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OpenSSH Tutorial (Linux/Mac/Windows(WSL?/MobaXTerm?/VirtualBox)) Table of Contents ssh Client Basics and Simple Login.....1
Introduction SSH: Secure Shell Ensure secure connection to remote (UL) server ֒→ establish encrypted tunnel using asymmetric keys X Public id_rsa.pub vs. Private id_rsa (without.pub) X typically on a non-standard port (Ex: 8022) limits kiddie scriptX Basic rule: 1 machine = 1 key pair ֒→ the private key is SECRET: never send it to anybody X Can be protected with a passphrase
What is SSH? SSH – Secure Shell SSH is a protocol for secure remote login and other secure network services over an insecure network developed by SSH Communications Security Corp., Finland two distributions are available: commercial version. freeware (www.openssh.com) specified in a set of Internet drafts. Major SSH components.
What is SSH? SSH – Secure Shell. Program vs. company vs. protocol. Will concentrate on SSH-2 protocol. SSH is a protocol for secure remote login and other secure network services over an insecure network. Replacement for telnet, rsh, rlogin, etc. Developed by SSH Communications, Finland. Specified in a set of Internet drafts.
The SSH Protocol Connects to a remote host and uses Diffie Hellman or RSA public key cryptography to exchange a secret key. Uses secret key for transport encryption with a symmetric cypher, usually using Blowfish, AES or 3DES. Also supports PKI authentication and authorization.
1 Introduction. The OpenSSH suite consists of sshd, the SSH server, and a set of client programs: ssh, scp, and sftp. It is one of the most important programs for remote access and administration of Linux/UNIX systems. OpenSSH is included with virtually all Linux distributions, and the server is often installed and run by default.
SSH (Secure SHell) is a network protocol which provides a replacement for insecure remote login and command execution facilities, such as telnet, rlogin and rsh. SSH encrypts traffic in both directions, preventing traffic sniffing and password theft. SSH also offers several additional useful features:
