SSH或Secure Shell是一种用于在不安全的网络（例如 Internet）上建立安全加密连接的协议。尽管任何应用程序都可以利用SSH协议来保护其通信，但它主要用于安全远程登录和安全文件传输。SSH利用公钥方法来授权用户及其连接。
如果您从事 IT 行业，您可能在工作中的某个阶段需要Secure Shell 。Secure Shell又名SSH是一个程序，可让您登录远程计算机、执行命令、移动文件等。该程序是一个基于 UNIX 的命令协议，提供对远程计算机系统的认证访问。
SSH使用RSA公钥加密技术并通过不安全的通道提供安全通信，因此被网络管理员广泛使用。由于它努力在两台机器之间创建机密连接，因此命令以多种方式加密。两端使用数字证书和密码以确保安全连接。
虽然您现在可以在 Windows 上启用和使用 OpenSSH，但今天在这篇文章中，我们将查看一些SSH Client software for Windows 11/10 - PuTTY、WinSCP、Bitvise SSH、OpenSSH、SmarTTY和Dameware FreeSSH。
适用于 Windows 11/10 的 SSH 客户端
SSH通信发生在SSH 客户端(SSH Client)和SSH 服务器(SSH Server)之间。可以使用密码或一对公钥和私钥对客户端进行身份验证。一旦客户端通过身份验证，就会在客户端和服务器之间建立安全隧道。这条隧道用于发送加密数据，而这些数据本来是未加密的和不安全的。SSH有很多应用程序，它可以防止很多网络攻击，例如中间人攻击。
在SSH普及之前， (SSH)Telnet和FTP等协议很流行。但考虑到该协议提供的安全性和隐私性，许多用户和开发人员已经转向SSH。SSH的一些应用包括远程登录(Remote Login)、远程命令(Remote Commands)、安全文件传输(Secure File Transfer)等等。任何应用程序都可以使用端口转发技术来利用SSH协议。(SSH)理解这个协议需要深入了解计算机网络(Computer Networks)、协议和流行的网络模型（TCP/IP和OSI）。
了解了基础知识，现在让我们看看一些适用于Windows PC的免费(Windows PC – PuTTY)SSH 客户端(SSH Clients)- PuTTY 、Bitvise和SmarTTY。
1]腻子
这个SSH客户端最初是为Microsoft编写的，现在可用于许多其他操作系统，并且非常易于使用，PuTTY是(PuTTY)Windows用户使用的最流行的SSH客户端之一。它是一个便携式工具，可以完全控制加密和协议版本。除了SSH，PuTTY还可以通过SCP、 rlogin 、Telnet和原始套接字连接连接到计算机。
PuTTY是(PuTTY)Windows 11/10/8/7上使用最广泛的SSH客户端之一。它是高度可定制的，并提供了强大的功能。它支持通过SSH 1（不安全）、SSH 2和Telnet进行连接。要使用PuTTY(PuTTY)建立连接，您只需输入主机名和端口（通常为 22），就可以开始了。您可以通过转到左侧菜单的相关部分来自定义所有其他设置。除此之外，您甚至可以自定义PuTTY终端的外观和感觉。你可以在这里下载。(here.)
2]WinSCP
以其(Best)安全文件传输而闻名的WinSCP是一个面向Windows用户的开源免费SSH 客户端。(SSH Client)除了SSH之外，它还支持SFTP和SCP协议以将您的计算机连接到远程计算机。它带有一个集成的文本编辑器，还可以与PuTTY身份验证代理集成。它为您提供存储会话的选项，并附带所有其他标准功能。WinSCP的便携式版本也可用。你可以在这里(here)下载。
3]OpenSSH
与大多数其他SSH 客户端(SSH Clients)一样，OpenSSH支持所有SSH协议版本并提供安全的隧道功能。它会加密您的所有流量并避免被劫持的风险。它可以很好地替代telnet和rlogin等程序。它包含在几乎所有流行的操作系统中，例如Linux、OSX、Solaris和BSD。你可以在这里下载。(here.)
4] Dameware FreeSSH
这个免费的SSH Windows 客户端(SSH Windows Client)允许您使用简单的协议进行 SSH 连接。Dameware FreeSSH使用(Dameware FreeSSH)SSH2、SSH1和Telnet协议将您连接到远程计算机，并允许您从单个控制台管理多个会话。您可以轻松保存会话。你可以在这里(here)下载。
5] Bitvise SSH 客户端
Bitvise SSH Client是一个免费的SSH客户端，提供丰富的GUI体验。客户端易于设置和安装。除了(Apart)SSH之外，它还提供SFTP，这是传统文件传输协议的安全替代方案。除了(Apart)SSH 客户端(SSH Client)，Bitvise还为 Windows 提供了SSH服务器(Windows)应用(SSH Server)程序。客户端完全免费下载和安装，但您可能需要购买服务器应用程序的许可证。
虽然不像PuTTY简单，但Bitvise SSH客户端具有简单的布局和组织良好的类别。Bitvise通过(Bitvise)SSH2将您连接到远程计算机，提供访问权限并让您传输文件。它配备了一套必需的工具，可以在安全的环境中满足您的工作需求。单击(Click) 此处(here)下载 Bitvise。
阅读：(Read:) 适用于 Windows 的 SSH 客户端的最佳 PuTTy 替代品(Best PuTTy alternative for SSH Clients for Windows)。
6] 智能
SmarTTY被认为是PuTTY的最佳替代品之一。它提供了多种功能，例如一个会话的多个选项卡和内置的公钥授权。SmarTTY中另一个有趣的功能是它可以让您远程编辑文件。内置编辑器非常方便和有用。此外，它还具有自动 CRLF(Automatic CRLF)到 LF 转换等功能。单击(Click) 此处(here)下载 SmartTTY。
如果您将计算机连接到远程计算机，您可能希望确保所有数据的安全。Secure Shell 客户端(Secure Shell Clients)可以帮助您。您需要做的就是在您的Windows(Windows)计算机上下载并安装合适的SSH客户端软件，运行它，然后与任何远程 PC 建立加密连接。始终建议在创建安全密钥和开始文件传输之前测试连接。
您可能也想看看这些免费的 FTP 客户端软件(Free FTP Client Software)。(You may want to have a look at these Free FTP Client Software too.)
Best free SSH Clients for Windows 11/10
SSH or Secure Shell is a protocol used for establishing secure encrypted connections over an insecure network such as the internet. Although any application can utilize the SSH protocol to secure its communication, it is mostly used for secure remote logins and secure file transfers. SSH utilizes a public-key methodology to authorize users and their connections.
If you are into the IT industry, you might have required a Secure Shell at some point in your work. Secure Shell a.k.a SSH is a program that lets you log into a remote machine, execute commands, move files, and more. The program is a UNIX-based command protocol that provides authenticated access to a remote computer system.
SSH uses RSA public-key cryptography and provides secure communications over insecure channels and hence is used widely by the network administrators. Since it strives to create a confidential connection across two machines, the commands are encrypted in many ways. A digital certificate and passwords are used at both ends to ensure a secure connection.
While you can now enable & use OpenSSH on Windows, today in this post, we will check out some free SSH Client software for Windows 11/10 – PuTTY, WinSCP, Bitvise SSH, OpenSSH, SmarTTY and Dameware FreeSSH.
SSH Clients for Windows 11/10
Communication over SSH happens between an SSH Client and an SSH Server. A client can be authenticated using a password or a pair of public and private keys. Once a client is authenticated, a secure tunnel is established between the client and the server. And this tunnel is used to send encrypted data which would have rather been un-encrypted and insecure. SSH has a lot of applications, and it prevents quite a lot of cyber-attacks, such as a man in the middle attacks.
Before the widespread of SSH, protocols like Telnet and FTP were prevalent. But considering the security and privacy offered by this protocol, many of users and developers have moved to SSH. Some of the applications of SSH are Remote Login, Remote Commands, Secure File Transfer, and a lot more. Any application can take advantage of SSH protocol using the port forwarding technique. Understanding this protocol requires deep knowledge of Computer Networks, protocols, and prevalent network models (TCP/IP and OSI).
Knowing the basics, let us now take a look at some free SSH Clients for Windows PC – PuTTY, Bitvise, and SmarTTY.
1] PuTTY
Originally written for Microsoft, this SSH client is now available for many other operating systems, and being very easy to use, PuTTY is one of the most popular SSH clients used by Windows users. It is a portable tool and provides full control over the encryptions and the protocol version. Besides SSH, PuTTY can connect to computers via SCP, rlogin, Telnet, and raw socket connection.
PuTTY is one of the most widely used SSH clients for Windows 11/10/8/7. It is highly customizable and offers great features. It supports connections over both SSH 1 (insecure), SSH 2, and Telnet. To establish a connection using PuTTY, all you need to do is enter the hostname and the port (usually 22), and you are good to go. You can customize all other settings by going to a relevant section of the left menu. Apart from that, you can even customize the look and feel of the PuTTY terminal. You can download it here.
2] WinSCP
Best known for its secure file transfer WinSCP is an open-source free SSH Client for Windows users. Besides SSH, it supports SFTP and SCP protocols to connect to your computer to a remote machine. It comes with an integrated text editor and can also integrate with PuTTY authentication agent. It gives you the option of storing the sessions and comes with all other standard features. The portable version of WinSCP is also available. You can download it here.
3] OpenSSH
Like most of the other SSH Clients, OpenSSH supports all SSH protocol versions and provides secure tunneling capabilities. It encrypts all your traffic and avoids the risks of hijacking. It works as a good alternative to programs like telnet and rlogin. It is included in almost every popular operating system like Linux, OSX, Solaris, and BSD. You can download it here.
4] Dameware FreeSSH
This free SSH Windows Client lets you make SSH connections with a simple protocol. Dameware FreeSSH connects you to the remote machine using SSH2, SSH1, and Telnet protocols and lets you manage multiple sessions from a single console. You can save the sessions easily. You can download it here.
5] Bitvise SSH Client
Bitvise SSH Client is a free SSH client that offers rich GUI experience. The client is easy to set up and install. Apart from SSH, it offers SFTP, which is a secure alternative to conventional file transfer protocol. Apart from SSH Client, Bitvise also offers an SSH Server application for Windows. The client is completely free to download and install, but you may need to purchase a license for the server application.
Although not as simple as PuTTY, Bitvise SSH client comes with a simple layout and well-organized categories. Bitvise connects you to the remote machine via SSH2, provides access and lets you transfer the files. It is equipped with a set of required tools and can fulfill your work needs in a secure environment. Click here to download Bitvise.
Read: Best PuTTy alternative for SSH Clients for Windows.
6] SmarTTY
SmarTTY is considered as one of the best alternatives to PuTTY. It offers a great variety of features such as multiple tabs for one session and inbuilt public key authorization. Another interesting feature in SmarTTY is that it lets you edit your files remotely. The inbuilt editor is very handy and useful. Also, it comes with features such as Automatic CRLF to LF conversion. Click here to download SmarTTY.
If you are connecting your computer to a remote machine, you probably would want to keep all your data safe and secure. Secure Shell Clients can help you with that. All you need to do is to download and install the set up a suitable SSH client software on your Windows computer, run it, and create an encrypted connection with any remote PC. It is always advised to test the connections before you create secure keys and start the file transfer.
You may want to have a look at these Free FTP Client Software too.
