Download OpenSSH 4.1

OpenSSH is a software suite for the SSH protocol with which a higher security can be achieved. Applications such as telnet, rlogin and ftp send data unencrypted over the network, the login data can then be read in a simple way. With OpenSSH, this data is sent encrypted, so that eavesdropping, connection hijacking and other network-level attacks are no longer possible. In addition, various secure tunneling options and authentication methods are also available. The development team recently released version 4.1 with the following release notes:

OpenSSH 4.1 has just been released. It will be available from the mirrors listed at shortly. OpenSSH is a 100% complete SSH protocol version 1.3, 1.5 and 2.0 implementation and includes sftp client and server support. We would like to thank the OpenSSH community for their continued support to the project, especially those who contributed source and bought T-shirts or posters.

We have a new design of T-shirt available, more info on:
http://www.openbsd.org/tshirts.html#18

Changes since OpenSSH 4.0:

• This is a bugfix release, no new features have been added. Some notable fixes are:
  • Fix segfault when using forwardings configured in ssh_config(5) and ClearAllForwardings (bugzilla #996)
  • Limit input buffer size for channels. A peer could send more data than the buffer code was willing to accept. This would cause OpenSSH to abort the connection (bugzilla #896)
• Several improvements to the regression tests
• Portable OpenSSH:
  • OpenSSH will now always normalise IPv4 in IPv6 mapped addresses back to IPv4 addresses. This means that IPv4 addresses in log messages on IPv6 enabled machines will no longer be prefixed by “::ffff:” and AllowUsers, DenyUsers, AllowGroups, DenyGroups will match IPv4-style addresses only for 4-in-6 mapped connections. This a consistent representation of IPv4 addresses regardless of whether or not the machine is IPv6 enabled.
• Other bugfixes, including bugzilla #950, #997, #998, #999, #1005, #1006, #1024, and #1038

[break]OpenSSH is available in two flavors, one specifically for OpenBSD and one for the other operating systems:
OpenSSH 4.1 – OpenBSD
OpenSSH 4.1 – Portable (Linux, Solaris, FreeBSD, NetBSD, AIX, IRIX, HP-UX, Mac OS X)