Simon Tatham(http://www.chiark.greenend.org.uk/~sgtatham/putty)이 제작한 PuTTY는 UNIX 또는 VMS 시스템에 접근할 수 있는 계정을 가지고 있거나, ISP에서 제공하는 웹 서버용 쉘 계정을 가지고 있는 경우에 유용하게 쓰일 수 있는 프로그램입니다. 5월 27일 릴리즈되었습니다. 자료는 하단에 첨부파일 클릭하시면 있습니다.
SSH는 Telnet과 Rlogin과는 달리 최신 프로토콜로서, 강력한 암호 기능을 구현하여 각종 공격으로부터 방어를 할 수 있는 높은 보안을 지원하는 프로토콜입니다.
Telnet은 서버 접속 시, 환경 변수와 같은 몇 가지 설정을 하지 않고도 간편하게 접속 할 수 있는 반면, SSH와 Rlogin에서는 이를 지원하지 않습니다. SSH와 Rlogin은 패스워드를 입력하지 않고도 서버에 로그인이 가능하며, SSH에서는 서버에 접속하여 자동으로 명령을 전송할 수 있어 자동화 프로세싱이 가능합니다.
개선사항
- Major improvements to network proxy support:
Support for interactively prompting the user if the proxy server requires authentication.
Built-in support for proxying via another SSH server, so that PuTTY will SSH to the proxy and then automatically forward a port through it to the destination host. (Similar to running plink -nc as a subprocess, but more convenient to set up, and allows you to answer interactive prompts presented by the proxy.)
Support for HTTP Digest authentication, when talking to HTTP proxies.
- Introduced pterm.exe, a PuTTY-like wrapper program for Windows command prompts (or anything else running in a Windows console). Not yet included in the installer, but available as a .exe file from the Download page.
- Updated Unicode and bidi support to Unicode 14.0.0.
- New command-line option -pwfile, like -pw except that it reads the password from a file so that it doesn't show up on the command line.
- Windows Pageant: option --openssh-config to allow easy interoperation with Windows's ssh.exe.
- -pw (and -pwfile) now do not fall back to interactively prompting for a password if the provided password fails. (That was the original intention.)
- New configuration options for keyboard handling:
Option to control handling of Shift + arrow keys
Extra mode in the function-keys option, for modern xterm (v216 and above).
- Bug workaround flag to wait for the server's SSH greeting before sending our own, for servers (or proxies) that lose outgoing data before seeing any incoming data.
- Crypto update: added side-channel resistance in probabilistic RSA key generation.
- Crypto update: retired the use of short Diffie-Hellman exponents (just in case).
- Bug fix: reconfiguring remote port forwardings more than once no longer crashes.
- Bug fix: terminal output processing is now paused while handling a remote-controlled terminal resize, so that the subsequent screen redraw is interpreted relative to the new terminal size instead of the old.
- Bug fix: Windows PuTTYgen's mouse-based entropy collection now handles high-frequency mice without getting confused.
- Bug fix: Windows Pageant can now handle large numbers of concurrent connections without hanging or crashing.
- Bug fix: if Windows Pageant is started multiple times simultaneously, the instances should reliably agree on one of them to be the persistent server.
- Bug fix: remote-controlled changes of window title are now interpreted according to the configured character set.
- Bug fix: remote-controlled changes of window title no longer get confused by UTF-8 characters whose encoding includes the byte 0x9C (which terminates the control sequence in non-UTF-8 contexts).
- Bug fix: popping up the window context menu in the middle of a drag-select now no longer leaves the drag in a stuck state.
- Bug fix: extensive use of true colour in the terminal no longer slows down window redraws unnecessarily.
- Bug fix: when PSCP reports the server sending a disallowed compound pathname, it correctly reports the replacement name it's using for the downloaded file.
- Bug fix: enabling X11 forwarding in psusan failed to fall back through possible port numbers for the forwarded X display.
- For developers: migrated the build system to CMake, removing the old idiosyncratic mkfiles.pl and the autotools system.
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