1.安装依赖
yum install pam-devel -y
2.上传压缩包,ssh下载地址
https://cdn.openbsd.org/pub/OpenBSD/OpenSSH/portable/
3.备份配置文件
cp /etc/ssh/sshd_config /home/sshd_config.backup
cp /etc/pam.d/sshd /home/sshd.backup
4.安装OpenSSH
解压openssh
cd openssh/
tar -zxvf openssh-9.0p1.tar.gz
cd openssh-9.0p1
编译配置
./configure --prefix=/usr --sysconfdir=/etc/ssh --with-md5-passwords --with-pam --with-zlib --with-tcp-wrappers --with-ssldir=/usr/local/ssl --without-hardening
编译安装
make && make install
调整文件权限
chmod 600 /etc/ssh/ssh_host_rsa_key
chmod 600 /etc/ssh/ssh_host_ecdsa_key
chmod 600 /etc/ssh/ssh_host_ed25519_key
还原之前的配置文件
mv /home/sshd.backup /etc/pam.d/sshd
mv /home/sshd_config.backup /etc/ssh/sshd_config
修改/etc/ssh/sshd_config配置文件
vim /etc/ssh/sshd_config
UsePAM yes
PermitRootLogin yes
PasswordAuthentication yes
#修改配置文件
重启sshd服务
systemctl restart sshd
查看版本是否升级为9.0p1
ssh -V