检测已安装的包
# rpm -qa | grep openssh openssh
# rpm -qa | grep openssh openssl

卸载用rpm -e 如果出现依赖包导致无法卸载，在最后面加上--nodeps即可,例：

# rpm -e openssl --nodeps

具体安装过程如下：

下载最新软件包源码
http://ftp5.usa.openbsd.org/pub/OpenBSD/OpenSSH/portable/openssh-7.3p1.tar.gz
http://www.openssl.org/source/openssl-1.0.2j.tar.gz
http://www.openssl.org/source/openssl-fips-2.0.13.tar.gz
使用YUM安装必要的软件开发包
# yum install -y zlib-devel pam-devel tcp_wrappers-devel
安装openssl-fips

具体说明见 http://www.openssl.org/docs/fips ;

# tar zxpf openssl-fips-2.0.5.tar.gz
# cd openssl-fips
# ./config
# make && make install
安装OpenSSL
# tar zxpf openssl-1.0.1h.tar.gz
# cd openssl-1.0.1h
# ./config fips --shared
# make && make install
将新编译的openssl library 加入系统动态库链接中
# echo "/usr/local/ssl/lib" >> /etc/ld.so.conf
# ldconfig
安装OpenSSH
# tar zxpf openssh-6.6p1.tar.gz
# cd openssh-6.6p1
# ./configure \
  --prefix=/usr \
  --sysconfdir=/etc/ssh \
  --with-md5-passwords \
  --with-pam \
  --with-tcp-wrappers \
  --with-ssl-dir=/usr/local/ssl
# make && make install
# ssh -V
修改相关配置
# cp -p contrib/redhat/sshd.init /etc/init.d/sshd    (此处的contrib路径为解压后的OpenSSH包路径)
# chmod u+x /etc/init.d/sshd                             （加执行权限）
# chkconfig --add sshd                                      （增加sshd服务）
# chkconfig sshd on                                          （把sshd加入启动项）
# yum install openssh                                          (安装OpenSSH客户端)
# vim /etc/ssh/sshd_config
PermitRootLogin yes                #允许root账户登录，单root账户必须加上，其他的参数请自行修改
测试登录
# /etc/init.d/sshd start
ssh-keygen: illegal option -- A

Usage: ssh-keygen [options]

Options:

-a trials   Number of trials for screening DH-GEX moduli.

-B          Show bubblebabble digest of key file.

-b bits     Number of bits in the key to create.

-C comment  Provide new comment.

-c          Change comment in private and public key files.

-e          Convert OpenSSH to IETF SECSH key file.

-F hostname Find hostname in known hosts file.

-f filename Filename of the key file.

-G file     Generate candidates for DH-GEX moduli.

-g          Use generic DNS resource record format.

-H          Hash names in known_hosts file.

-i          Convert IETF SECSH to OpenSSH key file.

-l          Show fingerprint of key file.

-M memory   Amount of memory (MB) to use for generating DH-GEX moduli.

-N phrase   Provide new passphrase.

-P phrase   Provide old passphrase.

-p          Change passphrase of private key file.

-q          Quiet.

-R hostname Remove host from known_hosts file.

-r hostname Print DNS resource record.

-S start    Start point (hex) for generating DH-GEX moduli.

-T file     Screen candidates for DH-GEX moduli.

-t type     Specify type of key to create.

-v          Verbose.

-W gen      Generator to use for generating DH-GEX moduli.

-y          Read private key file and print public key.

Starting sshd:                                             [  OK  ]

sshd文件的ssh-keygen参数有问题，暂时不知道怎么解决，但是不影响使用。

原文来自：https://wuxiaobai.win/archives/29

本文地址：https://www.linuxprobe.com/centos-openssl-openssh.html编辑：向金平，审核员：逄增宝

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