#!/bin/sh
cd /etc/yum.repos.d
mkdir backup
mv Cent* backup
wget -O /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-8.repo
yum -y clean all
yum -y makecache
cd /tmp
mkdir update
cd update
wget --no-check-certificate https://mirrors.aliyun.com/pub/OpenBSD/OpenSSH/portable/openssh-9.4p1.tar.gz
tar xf openssh-9.4p1.tar.gz
yum -y install zlib zlib-devel perl openssl-devel
yum -y install gcc gcc-c++
mv /etc/ssh /etc/ssh.bak
cd /tmp/update/openssh-9.4p1
#cd /usr/local/openssh
#rm -rf *
mkdir /usr/local/openssh
cd /tmp/update/openssh-9.4p1
./configure --prefix=/usr/local/openssh --sysconfdir=/etc/ssh --with-openssl-includes=/usr/local/include --with-ssl-dir=/usr/local/bin/openssl --with-zlib --with-md5-passwords --without-openssl-header-check
make
make install
echo "UseDNS no" >> /etc/ssh/sshd_config
echo 'PermitRootLogin yes' >> /etc/ssh/sshd_config
echo 'PubkeyAuthentication yes' >> /etc/ssh/sshd_config
echo 'PasswordAuthentication yes' >> /etc/ssh/sshd_config
echo "X11Forwarding yes" >> /etc/ssh/sshd_config
#echo "X11UseLocalhost no" >> /etc/ssh/sshd_config
echo "XAuthLocation /usr/bin/xauth" >> /etc/ssh/sshd_config
mv /usr/sbin/sshd /usr/sbin/sshd0909
mv /usr/bin/ssh /usr/bin/ssh0909
mv /usr/bin/ssh-keygen /usr/bin/ssh-keygen0909
ln -s /usr/local/openssh/bin/ssh /usr/bin/ssh
ln -s /usr/local/openssh/bin/ssh-keygen /usr/bin/ssh-keygen
ln -s /usr/local/openssh/sbin/sshd /usr/sbin/sshd
ssh -V
mv /usr/lib/systemd/system/sshd.service /usr/lib/systemd/system/sshd.service.bak
cp -a -f ./contrib/redhat/sshd.init /etc/init.d/sshd
cp -a -f ./contrib/redhat/sshd.pam /etc/pam.d/sshd.pam
chkconfig --add sshd
systemctl enable sshd --now
systemctl restart sshd
如ssh启动不了，如下：
#关闭selinux vi /etc/selinux/config 手工
#修改SELINUX=enforce为SELINUX=disable 重启服务器后
restorecon -r -v /root/.ssh
#开启selinux vi /etc/linux/config 手工
#修改为SELINUX=enforcing
systemctl start sshd
