系统：RHEL 5.4
这里安装的是openssh 6.6版本，首先系统要安装openssl、openssl-devel、zlib、zlib-devel、pam、pam-devel这几个包，否则安装openssh时会出错
1、解包
# tar zxvf openssh-6.6p1.tar.gz
2、安装
# cd openssh-6.6p1
# ./configure --prefix=/usr/local/ssh --sysconfdir=/etc/ssh --with-pam --with-zlib --with-ssl-dir=/usr/local/ssl--with-md5-passwords --mandir=/usr/share/man
# make
# make install
# cp /usr/local/ssh/bin/* /usr/bin/
# cp /usr/local/ssh/sbin/* /usr/sbin/
3、验证
# ssh -V
OpenSSH_6.6p1, OpenSSL 0.9.8e-fips-rhel5 01 Jul 2008
4、设置开机启动
# cp ./contrib/redhat/sshd.init /etc/init.d/sshd
# chmod +x /etc/init.d/sshd
# chkconfig --add sshd
# chkconfig sshd on
# service sshd start
正在启动 sshd： [确定]