Install openssh under linuxas4u2-Linux Enterprise Application-Linux server application information. The following is a detailed description. I. Preparations
2. Check the openssh version.
Because as4u2 is installed with openssl and openssh by default
Check openssl version
# Openssl version
OpenSSL 0.9.7a Feb 19 2003
Check the ssh Version
# Ssh-V
OpenSSH_3.9p1, OpenSSL 0.9.7a Feb 19 2003.
Ii. Install openssl
Uninstall the old opensll Library
# Rpm-e -- nodeps openssl
Unpack
# Tar xzvf openssl-0.9.8d.tar.gz
Enter the openssl directory to install openssl, and use -- prefix to specify the openssl installation directory.
# Cd openssl-0.9.8d
#./Config -- prefix =/usr/local/openssl-0.9.8
Modify mandir content
# Vi Makefile
Makefile =/usr/share/man
Compile
# Make
# Make test
# Make install
Test
#/Usr/local/openssl-0.9.8/bin/openssl version
OpenSSL 0.9.8d 28 Sep 2006
-- Prefix =/usr // specify the installation directory
-- Sysconfdir =/etc/ssh // System Configuration directory
-- With-pam
-- With-zlib // If zlib is compiled and installed by yourself, add the -- with-zlib = DIR parameter. If zlib is installed by default, replace it with -- with-zlib. Other parameters are the same.
-- Without-zlib-version-check // use zlib of earlier versions, and do not check zlib version (zlib 1.2.3 is recommended)
-- With-ssl-dir =/usr/include/openssl // ssl directory
With-md5-passwords
-- Mandir =/usr/share/man
Updated successfully. Restart the service.
# Service sshd restart
Now, you can use the SSH client to connect to the host.
Note: sftp-server is in/usr/libexec/openssh/sftp-server by default. After the update, modify it in/etc/ssh/sshd_config.
# Subsystem sftp/usr/libexec/sftp-server
Otherwise, sftp cannot be started.
Note: If you want to enable the TELNET port remotely, in case the SSH upgrade fails and you cannot contact the host.
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