centos升级openssh

# 备份原有ssh配置文件
mv /etc/ssh  /etc/ssh_bak/
# 下载新版本的openssh
wget https://cdn.openbsd.org/pub/OpenBSD/OpenSSH/portable/openssh-8.0p1.tar.gz
# 解压
tar -xzvf openssh-8.0p1.tar.gz
cd openssh-8.0p1/
# 安装相关依赖
yum -y install pam-devel
# 配置，笔者原有ssh目录安装在/bin下面，下面语句覆盖原有bin文件
 ./configure --prefix='' --sysconfdir=/etc/ssh --with-pam --with-zlib --with-md5-passwords --with-tcp-wrappers
# 编译安装
make 
make install                    
# 重启ssh
systemctl restart  sshd.service