CENTOS内置的OPENSSL和OPENSSH升级更新
OPENSSH：https://openbsd.hk/pub/OpenBSD/OpenSSH/portable/
OPENSSL：https://ftp.openssl.org/source/
openssl
openssl version //查看版本
step1:rz上传openssl源码包，并解压
tar -xvf openssl-1.1.1d.tar.gz
step2:备份之前的文件
mv /usr/bin/openssl /usr/bin/openssl_bak
mv /usr/include/openssl /usr/include/openssl_bak
step3:编译安装
mkdir /usr/local/ssl
./config --prefix=/usr/local/ssl shared && make && make install
echo $? //查看上一条命令是否正确执行
step4：制作软连接
ln -s /usr/local/ssl/bin/openssl /usr/bin/openssl
ln -s /usr/local/ssl/include/openssl /usr/include/openssl
step5:执行命令加载新配置
echo "/usr/local/ssl/lib" >> /etc/ld.so.conf
/sbin/ldconfig
openssh
ssh -V //查看版本
step1:rz上传openssh源码包，并解压
tar -xvf openssh-8.3p1.tar.gz
chown -R root.root /data/tools/openssh-8.0p1
rm -rf /etc/ssh/*
step2：安装依赖
yum -y install pam-devel
step3：编译安装
mkdir /usr/local/openssh
./configure --prefix=/usr/local/openssh --sysconfdir=/etc/ssh --with-openssl-includes=/usr/local/ssl/include
--with-ssl-dir=/usr/local/ssl --with-zlib --with-md5-passwords --with-pam && make && make installsystemctl daemon-reload
法一：
/etc/init.d/sshd restart
法二：
systemctl stop sshd
systemctl start sshd
原文：https://www.cnblogs.com/krystal-LA-zx/p/13496518.html