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Linux · System Tools

OpenSSH

OpenSSH is a suite of secure networking utilities based on the SSH protocol, used for encrypted remote access and file transfers.

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Lizenz
BSD
Aktuelle Version
10.6p1
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Was ist OpenSSH?

OpenSSH provides secure encrypted communication between systems using the SSH protocol. Originally developed in 1999 as an open-source alternative to the proprietary SSH software, it has become the de facto standard for remote administration on Linux and Unix-like systems. It's mature, widely audited, and deeply integrated into most distributions.

It's primarily for system administrators, developers, and power users who need secure remote shell access, port forwarding, or automated authentication via key pairs. If you regularly manage servers or containers, OpenSSH is essential. It’s not a GUI tool, so it suits those comfortable with terminal workflows.

Compared to WinSSHTerm, OpenSSH feels more minimal and direct. It doesn’t bundle a GUI or session manager — you interact through the command line. While WinSSHTerm offers tabbed SSH with GUI convenience, OpenSSH prioritizes security, scriptability, and integration with the shell environment. You trade visual polish for reliability and control.

Ideal für: Users who need secure, scriptable, and reliable command-line access to remote systems.

Wichtige Funktionen von OpenSSH

  • Secure remote shell (ssh)
  • Encrypted file transfer (scp, sftp)
  • SSH key management (ssh-keygen)
  • Port forwarding and tunneling
  • X11 forwarding for GUI apps
  • Public key authentication
  • Configurable via ~/.ssh/config
  • Supports SSH agents (ssh-agent)

Vorteile

  • Pre-installed or easily available on nearly every Linux system
  • Highly secure with regular updates and audits
  • Scriptable and integrates well with automation tools
  • Supports advanced features like SSH agents and config files
  • Actively maintained with a long-standing track record

Nachteile

  • No built-in GUI or session manager
  • Steeper learning curve for beginners
  • Manual configuration for complex setups
  • Limited visual feedback compared to desktop tools

Windows-Programme, die OpenSSH ersetzt

WinSSHTerm

OpenSSH unter Linux installieren

Ubuntu / Mintsudo apt install openssh
Debiansudo apt install openssh
Fedorasudo dnf install gsi-openssh
Arch / Manjarosudo pacman -S openssh
openSUSEsudo zypper install openssh

Tipps für Windows-Umsteiger

If you're used to WinSSHTerm, you'll now manage connections via the command line using ssh user@host. Save recurring connections in ~/.ssh/config for easy access. Use ssh-keygen to create keys and ssh-copy-id to deploy them. Unlike WinSSHTerm, there's no session browser — connections are text-based and managed through your terminal. File transfers use scp or sftp instead of a built-in GUI.

OpenSSH: häufige Fragen

How do I install OpenSSH on Linux?

Most distributions include it by default. If not, install the openssh-client (and openssh-server for hosting connections) package via your package manager.

How do I generate an SSH key?

Run ssh-keygen to create a key pair. The default location is ~/.ssh/id_rsa and ~/.ssh/id_rsa.pub. Use -t ed25519 for newer keys.

How do I copy my SSH key to a server?

Use ssh-copy-id user@host to copy your public key. Alternatively, manually append the key to ~/.ssh/authorized_keys on the server.

Can OpenSSH do port forwarding?

Yes. Use ssh -L for local forwarding or ssh -R for remote forwarding. This is useful for securing services or accessing internal networks.

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