HP-UX Secure Shell A.04.70.003, A.04.70.004, and A.04.70.005 Release Notes

Support Notice
HP provides software technical support for HP-UX Secure Shell for the latest, currently
shipping version and the immediately prior version of the product.
New Features
The following new features are introduced in OpenSSH4.7p1. HP-UX Secure Shell
versions A.04.70.003, A.04.70.004, and A.04.70.005 are based on OpenSSH4.7p1 and
include these new features:
• The sshd daemon defaults to SSH Protocol 2 in new installations. There are no
changes to existing installations.
• The SSH channel window size has been increased, and both the ssh command
and the sshd daemon now send window updates more aggressively, thereby
improving performance on high-BDP (Bandwidth Delay Product) networks.
• The ssh command and the sshd daemon now preserve MAC contexts between
packets. This saves two hash calls per packet and results in 12-16% speedup for
arcfour256 and hmac-md5 algorithms.
• A new MAC algorithm has been added, UMAC-64 (RFC4418) as
"[e-mail]". UMAC-64 has been measured to be approximately 20%
faster than HMAC-MD5.
• A new -K option is added to the ssh command that enables GSSAPI-based
authentication and forwarding (delegation) of GSSAPI credentials to the server
by setting GSSAPIAuthentication=Yes
• Failure to establish an ssh TunnelForward is now treated as a fatal error when
the ExitOnForwardFailure option is set.
• The ssh command returns a sensible exit status if the control master process exits
unexpectedly.
Defects Fixed in OpenSSH4.7p1
This section lists the defects fixed in OpenSSH4.7p1. HP-UX Secure Shell versions
A.04.70.003, A.04.70.004, and A.04.70.005 are based on OpenSSH4.7p1 and include
these defect fixes. Table 1-2 lists the defects fixed in OpenSSH4.7p1.
Table 1-2 Defects Fixed in OpenSSH4.7p1
Defect FixDefect Identifier
Patched the ProxyCommand in ssh to allow host-based authentication to
work with it.
Bugzilla #616
Modified the scp command to skip FIFO files rather than hang.
Bugzilla #856
Enabled the scp command to process non-printing characters in filenames.
Bugzilla #891
8 HP-UX Secure Shell A.04.70.003, A.04.70.004, and A.04.70.005