参考：https://blog.csdn.net/qq_29768197/article/details/125048720
参考：https://blog.csdn.net/weixin_46739058/article/details/129189927
1、官方下载地址: http://www.zlib.net/ zlib-1.2.12.tar.gz
wget http://www.zlib.net/zlib-1.2.13.tar.gz
2、官方下载地址：https://www.openssl.org/source/ openssl-1.1.1u.tar.gz
wget https://www.openssl.org/source/openssl-1.1.1u.tar.gz
3、官方下载地址：http://ftp.openbsd.org/pub/OpenBSD/OpenSSH/portable/ openssh-9.3p1.tar.gz
wget http://ftp.openbsd.org/pub/OpenBSD/OpenSSH/portable/openssh-9.3p1.tar.gz
4、解压
tar zxvf /root/zlib-1.2.13.tar.gz tar zxvf /root/openssl-1.1.1u.tar.gz tar zxvf /root/openssh-9.3p1.tar.gz
5、安装gcc（没有就安装）
参考：https://blog.csdn.net/vipee1/article/details/127264883
6、编译安装zlib
cd zlib-1.2.13 ./configure --prefix=/usr/local/zlib make && make install echo '/usr/local/zlib/lib' >> /etc/ld.so.conf ldconfig -v
7、编译安装openssl
cd openssl-1.1.1u ./config --prefix=/usr/local/ssl -d shared make && make install （时间比较长，切勿打断） echo '/usr/local/ssl/lib' >> /etc/ld.so.conf ldconfig -v
8、编译安装openssh
cd openssh-9.3p1 ./configure --prefix=/usr/local/openssh --with-zlib=/usr/local/zlib --with-ssl-dir=/usr/local/ssl make && make install
9、配置ssh，备份原有文件，并将新的配置复制到指定目录
echo 'PermitRootLogin yes' >>/usr/local/openssh/etc/sshd_config echo 'PubkeyAuthentication yes' >>/usr/local/openssh/etc/sshd_config echo 'PasswordAuthentication yes' >>/usr/local/openssh/etc/sshd_config mv /etc/ssh/sshd_config /etc/ssh/sshd_config.bak cp /usr/local/openssh/etc/sshd_config /etc/ssh/sshd_config mv /usr/sbin/sshd /usr/sbin/sshd.bak cp /usr/local/openssh/sbin/sshd /usr/sbin/sshd mv /usr/bin/ssh /usr/bin/ssh.bak cp /usr/local/openssh/bin/ssh /usr/bin/ssh mv /usr/bin/ssh-keygen /usr/bin/ssh-keygen.bak cp /usr/local/openssh/bin/ssh-keygen /usr/bin/ssh-keygen mv /etc/ssh/ssh_host_ecdsa_key.pub /etc/ssh/ssh_host_ecdsa_key.pub.bak cp /usr/local/openssh/etc/ssh_host_ecdsa_key.pub /etc/ssh/ssh_host_ecdsa_key.pub cp -p contrib/redhat/sshd.init /etc/init.d/sshd chmod +x /etc/init.d/sshd chkconfig --add sshd chkconfig sshd on chmod 600 /etc/ssh/ssh_host_rsa_key chmod 600 /etc/ssh/ssh_host_ecdsa_key chown -R root.root /var/empty/sshd chmod 744 /var/empty/sshd
10、卸载系统里原有Openssh（一般有三个包，全部卸载）
rpm -qa | grep openssh
根据上面查询出的结果，卸载系统里原有Openssh（一般有三个包，全部卸载）
rpm -e --nodeps xxxxxxxxxx
rpm -e --nodeps openssh-server-7.4p1-21.el7.x86_64
rpm -e --nodeps openssh-7.4p1-21.el7.x86_64
rpm -e --nodeps openssh-clients-7.4p1-21.el7.x86_64
卸载完成后执行rpm -qa | grep openssh，确保没有回显
rpm -qa | grep openssh
11、重启服务，验证
重启sshd服务
systemctl restart sshd
验证ssh版本
ssh -V