OpenSSH v5.3 - released

OpenSSH is a FREE version of the SSH connectivity tools that technical users of the Internet rely on. Users of telnet, rlogin, and ftp may not realize that their password is transmitted across the Internet unencrypted, but it is.

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OpenSSH encrypts all traffic (including passwords) to effectively eliminate eavesdropping, connection hijacking, and other attacks. Additionally, OpenSSH provides secure tunneling capabilities and several authentication methods, and supports all SSH protocol versions.

This is a bugfix release, no new features have been added.

Changes since OpenSSH 5.2

General Bugfixes:

  • Do not limit home directory paths to 256 characters. bz#1615
  • Several minor documentation and correctness fixes.

Portable OpenSSH Bugfixes:

  • This release removes for support for very old versions of Cygwin and for Windows 95/98/ME
  • Move the deletion of PAM credentials on logout to after the session close. bz#1534
  • Make PrintLastLog work on AIX. bz#1595
  • Avoid compile errors on FreeBSD from conflicts in glob.h. bz#1634
  • Delay dropping of root privileges on AIX so chroot and pam_open_session work correctly. bz#1249 and bz#1567
  • Increase client IO buffer on Cygwin to 64K, realising a significant performance improvement.
  • Roll back bz#1241 (better handling for expired passwords on Tru64). The change broke password logins on some configurations.
  • Accept ENOSYS as a fallback error when attempting atomic rename(). bz#1535
  • Fix passing of variables to recursive make(1) invocations on Solaris. bz#1505
  • Skip the tcgetattr call on the pty master on Solaris, since it never succeeds and can hang if large amounts of data is sent to the slave (eg a copy-paste). bz#1528
  • Fix detection of krb5-config. bz#1639
  • Fix test for server-assigned remote forwarding port for non-root users. bz#1578
  • Fix detection of libresolv on OSX 10.6.


  • Open Source Project
  • Free Licensing
  • Strong Encryption (3DES, Blowfish, AES, Arcfour)
  • X11 Forwarding (encrypt X Window System traffic)
  • Port Forwarding (encrypted channels for legacy protocols)
  • Strong Authentication (Public Key, One-Time Password and Kerberos Authentication)
  • Agent Forwarding (Single-Sign-On)
  • Interoperability (Compliance with SSH 1.3, 1.5, and 2.0 protocol Standards)
  • SFTP client and server support in both SSH1 and SSH2 protocols.
  • Kerberos and AFS Ticket Passing
  • Data Compression

Read the details of this features.

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