openssh离线升级9.0的步骤总结---（针对与centos7）
序言：
ssh服务版本低会出现漏洞，对于安全要求较高的公司来讲，服务器的ssh加固最有效的方式就是平滑升级到最新版本，所以今天需要来讲一下平滑升级到ssh9.0的方法和步骤。
1：所需包下载地址如下:
Zlib官网：http://www.zlib.net/
OpenSSL官网：https://www.openssl.org/
OpenSSH官网：https://www.openssh.com/
2:准备工作：
需要升级前先开启telnet服务，防止当我们的ssh升级失败的时候没有可以远程链接机器的服务。
开启telnet服务：
1：检查是否安装了telnet rpm -qa telnet
2：未安装telnet的情况下先到 http://rpmfind.net/下载telnet的对应版本的rpm包上传到服务器后进行安装 安装命令 rpm -ivh telnet-server*.rpm
3: 开启telnet 命令如下
systemctl start telnet.socket
3: 安装与最终查询
3.1 创建自定义目录
mkdir ssh_up
3.2： 将准备好的zlib ssl，ssh的最新的安装包放置到服务器的自定义目录下
3.3：检查安装依赖是否都存在，不存在利用yum进行安装，yum源里没有的情况下缺少的包可以去 http://rpmfind.net/进行对应包的搜索和下载
yum install gcc gcc-c++ glibc make autoconf openssl openssl-devel pcre-devel pam-devel zlib-devel tcp_wrappers-devel tcp_wrappers
3.4: 开启脚本安装ssh升级服务，脚本如下：步骤一定和文档一样才能用这个脚本，否则请自行按照自己的实际情况修改脚本。
#!/bin/bash
#
#########################################################
# Function :openssh-9.0p1 update #
# Platform :Centos7 #
# Version :2.0 #
# Date :2022-06-13 #
#########################################################
clear
export LANG="en_US.UTF-8"
#版本号
zlib_version="zlib-1.2.12"
openssl_version="openssl-1.1.1o"
openssh_version="openssh-9.0p1"
#安装包地址
file="/ssh_up"
#默认编译路径
default="/usr/local"
date_time=`date +%Y-%m-%d—%H:%M`
#安装目录
file_install="$file/openssh_install"
file_backup="$file/openssh_backup"
file_log="$file/openssh_log"
#源码包链接
zlib_download="http://www.zlib.net/$zlib_version.tar.gz"
openssl_download="https://www.openssl.org/source/$openssl_version.tar.gz"
openssh_download="https://cdn.openbsd.org/pub/OpenBSD/OpenSSH/portable/$openssh_version.tar.gz"
# Check if user is root
if [ $(id -u) != "0" ]; then
echo -e "\033[33m--------------------------------------------------------------- \033[0m"
echo -e " 当前用户为普通用户，必须使用root用户运行，脚本退出中......" "\033[31m Error\033[0m"
echo -e "\033[33m--------------------------------------------------------------- \033[0m"
echo ""
sleep 4
exit
fi
#判断是否安装wget
echo -e "\033[33m 正在安装Wget............... \033[0m"
sleep 2
echo ""
if ! type wget >/dev/null 2>&1; then
yum install -y wget
else
echo -e "\033[33m--------------------------------------------------------------- \033[0m"
echo -e " wget已经安装了：" "\033[32m Please continue\033[0m"
echo -e "\033[33m--------------------------------------------------------------- \033[0m"
echo ""
fi
#判断是否安装tar
echo -e "\033[33m 正在安装TAR............... \033[0m"
sleep 2
echo ""
if ! type tar >/dev/null 2>&1; then
yum install -y tar
else
echo ""
echo -e "\033[33m--------------------------------------------------------------- \033[0m"
echo -e " tar已经安装了：" "\033[32m Please continue\033[0m"
echo -e "\033[33m--------------------------------------------------------------- \033[0m"
fi
echo ""
#创建文件（可修改）
mkdir -p $file_install
mkdir -p $file_backup
mkdir -p $file_log
mkdir -p $file_backup/zlib
mkdir -p $file_backup/ssl
mkdir -p $file_backup/ssh
mkdir -p $file_log/zlib
mkdir -p $file_log/ssl
mkdir -p $file_log/ssh
#备份文件（可修改）
cp -rf /usr/bin/openssl $file_backup/ssl/openssl_$date_time.bak > /dev/null
cp -rf /etc/init.d/sshd $file_backup/ssh/sshd_$date_time.bak > /dev/null
cp -rf /etc/ssh $file_backup/ssh/ssh_$date_time.bak > /dev/null
cp -rf /usr/lib/systemd/system/sshd.service $file_backup/ssh/sshd_$date_time.service.bak > /dev/null
cp -rf /etc/pam.d/sshd.pam $file_backup/ssh/sshd_$date_time.pam.bak > /dev/null
##并卸载原有的openssh（可修改）
rpm -e --nodeps `rpm -qa | grep openssh`
#下载的源码包，检查是否解压（可修改）
# if [ -e $file/$zlib_version.tar.gz ] && [ -e $file/$openssl_version.tar.gz ] && [ -e /$file/$openssh_version.tar.gz ];then
# echo -e " 下载软件源码包已存在 " "\033[32m Please continue\033[0m"
# else
# echo -e "\033[33m 未发现本地源码包，链接检查获取中........... \033[0m "
# echo ""
# cd $file
# wget --no-check-certificate $zlib_download
# wget --no-check-certificate $openssl_download
# wget --no-check-certificate $openssh_download
# echo ""
# fi
#zlib
echo -e "\033[33m 正在下载Zlib软件包.............. \033[0m"
sleep 2
echo ""
if [ -e $file/$zlib_version.tar.gz ] ;then
echo -e " 下载软件源码包已存在 " "\033[32m Please continue\033[0m"
else
echo -e "\033[33m 未发现zlib本地源码包，链接检查获取中........... \033[0m "
sleep 1
echo ""
cd $file
wget --no-check-certificate $zlib_download
echo ""
fi
#openssl
echo -e "\033[33m 正在下载Openssl软件包.............. \033[0m"
sleep 2
echo ""
if [ -e $file/$openssl_version.tar.gz ] ;then
echo -e " 下载软件源码包已存在 " "\033[32m Please continue\033[0m"
else
echo -e "\033[33m 未发现openssl本地源码包，链接检查获取中........... \033[0m "
echo ""
sleep 1
cd $file
wget --no-check-certificate $openssl_download
echo ""
fi
#openssh
echo -e "\033[33m 正在下载Openssh软件包.............. \033[0m"
sleep 2
echo ""
if [ -e /$file/$openssh_version.tar.gz ];then
echo -e " 下载软件源码包已存在 " "\033[32m Please continue\033[0m"
else
echo -e "\033[33m 未发现openssh本地源码包，链接检查获取中........... \033[0m "
echo ""
sleep 1
cd $file
wget --no-check-certificate $openssh_download
echo ""
fi
#安装zlib
#Install_zlib(){
echo -e "\033[33m 正在解压Zlib软件包.............. \033[0m"
sleep 2
echo ""
cd $file && mkdir -p $file_install && tar -xzf zlib*.tar.gz -C $file_install
if [ -d $file_install/$zilb_version ];then
echo -e "\033[33m--------------------------------------------------------------- \033[0m"
echo -e " zilb解压源码包成功" "\033[32m Success\033[0m"
echo -e "\033[33m--------------------------------------------------------------- \033[0m"
echo ""
else
echo -e "\033[33m--------------------------------------------------------------- \033[0m"
echo -e " zilb解压源码包失败，脚本退出中......" "\033[31m Error\033[0m"
echo -e "\033[33m--------------------------------------------------------------- \033[0m"
echo ""
sleep 4
exit
fi
echo -e "\033[33m 正在编译安装Zlib服务.............. \033[0m"
sleep 2
echo ""
cd $file_install/zlib*
./configure --prefix=$default/$zlib_version > $file_log/zlib/zlib_configure_$date_time.txt #> /dev/null 2>&1
if [ $? -eq 0 ];then
echo -e "\033[33m make... \033[0m"
make > /dev/null 2>&1
echo $?
echo -e "\033[33m make test... \033[0m"
make test > /dev/null 2>&1
echo $?
echo -e "\033[33m make install... \033[0m"
make install > /dev/null 2>&1
echo $?
else
echo -e "\033[33m--------------------------------------------------------------- \033[0m"
echo -e " 编译安装压缩库失败，脚本退出中..." "\033[31m Error\033[0m"
echo -e "\033[33m--------------------------------------------------------------- \033[0m"
echo ""
sleep 4
exit
fi
if [ -e $default/$zlib_version/lib/libz.so ];then
sed -i '/zlib/'d /etc/ld.so.conf
echo "$default/$zlib_version/lib" >> /etc/ld.so.conf
echo ""
echo "$default/$zlib_version/lib" >> /etc/ld.so.conf.d/zlib.conf
ldconfig -v > $file_log/zlib/zlib_ldconfig_$date_time.txt > /dev/null 2>&1
/sbin/ldconfig
echo ""
fi
#}
#install_openssl(){
echo -e "\033[33m 正在解压Openssl.............. \033[0m"
sleep 2
echo ""
cd $file && tar -xvzf openssl*.tar.gz -C $file_install
if [ -d $file_install/$openssl_version ];then
echo -e "\033[33m--------------------------------------------------------------- \033[0m"
echo -e " OpenSSL解压源码包成功" "\033[32m Success\033[0m"
echo -e "\033[33m--------------------------------------------------------------- \033[0m"
else
echo -e "\033[33m--------------------------------------------------------------- \033[0m"
echo -e " OpenSSL解压源码包失败，脚本退出中......" "\033[31m Error\033[0m"
echo -e "\033[33m--------------------------------------------------------------- \033[0m"
echo ""
sleep 4
exit
fi
echo ""
echo -e "\033[33m 正在编译安装Openssl服务.............. \033[0m"
sleep 2
echo ""
cd $file_install/$openssl_version
./config shared zlib --prefix=$default/$openssl_version > $file_log/ssl/ssl_config_$date_time.txt #> /dev/null 2>&1
if [ $? -eq 0 ];then
echo -e "\033[33m make clean... \033[0m"
make clean > /dev/null 2>&1
echo $?
echo -e "\033[33m make -j 4... \033[0m"
make -j 4 > /dev/null 2>&1
echo $?
echo -e "\033[33m make install... \033[0m"
make install > /dev/null 2>&1
echo $?
else
echo -e "\033[33m--------------------------------------------------------------- \033[0m"
echo -e " 编译安装OpenSSL失败，脚本退出中..." "\033[31m Error\033[0m"
echo -e "\033[33m--------------------------------------------------------------- \033[0m"
echo ""
sleep 4
exit
fi
mv /usr/bin/openssl /usr/bin/openssl_$date_time.bak #先备份
if [ -e $default/$openssl_version/bin/openssl ];then
sed -i '/openssl/'d /etc/ld.so.conf
echo "$default/$openssl_version/lib" >> /etc/ld.so.conf
ln -s $default/$openssl_version/bin/openssl /usr/bin/openssl
ln -s $default/$openssl_version/lib/libssl.so.1.1 /usr/lib64/libssl.so.1.1
ln -s $default/$openssl_version/lib/libcrypto.so.1.1 /usr/lib64/libcrypto.so.1.1
ldconfig -v > $file_log/ssl/ssl_ldconfig_$date_time.txt > /dev/null 2>&1
/sbin/ldconfig
echo -e "\033[33m--------------------------------------------------------------- \033[0m"
echo -e " 编译安装OpenSSL " "\033[32m Success\033[0m"
echo -e "\033[33m--------------------------------------------------------------- \033[0m"
echo ""
sleep 4
echo -e "\033[32m====================== OpenSSL veriosn ===================== \033[0m"
echo ""
openssl version -a
echo ""
echo -e "\033[32m======================================================= \033[0m"
else
echo ""
echo -e "\033[33m--------------------------------------------------------------- \033[0m"
echo -e " OpenSSL软连接失败，脚本退出中..." "\033[31m Error\033[0m"
echo -e "\033[33m--------------------------------------------------------------- \033[0m"
fi
#}
#install_openssh(){
echo -e "\033[33m 正在解压Openssh.............. \033[0m"
sleep 2
echo ""
cd $file && tar -xvzf openssh*.tar.gz -C $file_install
if [ -d $file_install/$openssh_version ];then
echo -e "\033[33m--------------------------------------------------------------- \033[0m"
echo -e " OpenSSh解压源码包成功" "\033[32m Success\033[0m"
echo -e "\033[33m--------------------------------------------------------------- \033[0m"
else
echo -e "\033[33m--------------------------------------------------------------- \033[0m"
echo -e " OpenSSh解压源码包失败，脚本退出中......" "\033[31m Error\033[0m"
echo -e "\033[33m--------------------------------------------------------------- \033[0m"
echo ""
sleep 4
exit
fi
echo ""
echo -e "\033[33m 正在编译安装Openssh服务.............. \033[0m"
sleep 2
echo ""
mv /etc/ssh /etc/ssh_$date_time.bak #先备份
cd $file_install/$openssh_version
./configure --prefix=$default/$openssh_version --sysconfdir=/etc/ssh --with-ssl-dir=$default/$openssl_version --with-zlib=$default/$zlib_version > $file_log/ssh/ssh_configure_$date_time.txt #> /dev/null 2>&1
if [ $? -eq 0 ];then
echo -e "\033[33m make -j 4... \033[0m"
make -j 4 > /dev/null 2>&1
echo $?
echo -e "\033[33m make install... \033[0m"
make install > /dev/null 2>&1
echo $?
else
echo -e "\033[33m--------------------------------------------------------------- \033[0m"
echo -e " 编译安装OpenSSH失败，脚本退出中......" "\033[31m Error\033[0m"
echo -e "\033[33m--------------------------------------------------------------- \033[0m"
echo ""
sleep 4
exit
fi
echo ""
echo -e "\033[32m==================== OpenSSH veriosn =================== \033[0m"
echo ""
/usr/local/$openssh_version/bin/ssh -V
echo ""
echo -e "\033[32m======================================================= \033[0m"
echo ""
echo -e "\033[33m 正在迁移Openssh配置文件.............. \033[0m"
sleep 2
echo ""
#迁移sshd
if [ -f "/etc/init.d/sshd" ];then
mv /etc/init.d/sshd /etc/init.d/sshd_$date_time.bak
else
echo -e " /etc/init.d/sshd不存在 " "\033[31m Not backed up(可忽略)\033[0m"
fi
cp -rf $file_install/$openssh_version/contrib/redhat/sshd.init /etc/init.d/sshd;
chmod u+x /etc/init.d/sshd;
chkconfig --add sshd ##自启动
chkconfig --list |grep sshd;
chkconfig sshd on
#备份启动脚本,不一定有
if [ -f "/usr/lib/systemd/system/sshd.service" ];then
mv /usr/lib/systemd/system/sshd.service /usr/lib/systemd/system/sshd.service_bak
else
echo -e " sshd.service不存在" "\033[31m Not backed up(可忽略)\033[0m"
fi
#备份复制sshd.pam文件
if [ -f "/etc/pam.d/sshd.pam" ];then
mv /etc/pam.d/sshd.pam /etc/pam.d/sshd.pam_$date_time.bak
else
echo -e " sshd.pam不存在" "\033[31m Not backed up(可忽略)\033[0m"
fi
cp -rf $file_install/$openssh_version/contrib/redhat/sshd.pam /etc/pam.d/sshd.pam
#迁移ssh_config
cp -rf $file_install/$openssh_version/sshd_config /etc/ssh/sshd_config
sed -i 's/Subsystem/#Subsystem/g' /etc/ssh/sshd_config
echo 'Subsystem sftp internal-sftp'>> /etc/ssh/sshd_config
cp -rf $default/$openssh_version/sbin/sshd /usr/sbin/sshd
cp -rf /$default/$openssh_version/bin/ssh /usr/bin/
cp -rf $default/$openssh_version/bin/ssh-keygen /usr/bin/ssh-keygen
sed -i 's/#PasswordAuthentication\ yes/PasswordAuthentication\ yes/g' /etc/ssh/sshd_config
#grep -v "[[:space:]]*#" /etc/ssh/sshd_config |grep "PubkeyAuthentication yes"
echo 'PermitRootLogin no' >> /etc/ssh/sshd_config
#重启sshd
service sshd start > /dev/null 2>&1
if [ $? -eq 0 ];then
echo -e "\033[33m--------------------------------------------------------------- \033[0m"
echo -e " 启动OpenSSH服务成功" "\033[32m Success\033[0m"
echo -e "\033[33m--------------------------------------------------------------- \033[0m"
echo ""
sleep 2
echo -e "\033[32m==================== OpenSSH veriosn =================== \033[0m"
echo ""
ssh -V
echo ""
echo -e "\033[32m======================================================== \033[0m"
else
echo -e "\033[33m--------------------------------------------------------------- \033[0m"
echo -e " 启动OpenSSH服务失败，脚本退出中......" "\033[31m Error\033[0m"
echo -e "\033[33m--------------------------------------------------------------- \033[0m"
sleep 4
exit
fi
echo ""
#}
#删除源码包（可修改）
rm -rf $file/*.tar.gz
#rm -rf $file_install
##sshd状态
echo ""
echo -e "\033[33m输出sshd服务状态： \033[33m"
sleep 1
echo ""
systemctl status sshd.service
echo ""
echo ""
echo ""
sleep 1
echo -e "\033[33m==================== OpenSSH file =================== \033[0m"
echo ""
echo -e " Openssh升级安装目录请前往: "
cd $file_install && pwd
cd ~
echo ""
echo -e " Openssh升级备份目录请前往: "
cd $file_backup && pwd
cd ~
echo ""
echo -e " Openssh升级日志目录请前往: "
cd $file_log && pwd
cd ~
echo ""
echo -e "\033[33m======================================================= \033[0m"
3.5: 检查是否升级成功，查看是否为最新版本的ssh
ssh -V
3.6：如果升级成功之后，需要检查是否可以使用sftp，如果不可以使用，请检查自己的sftp-server的服务包的位置，查找到之后把位置替换到ssh的配置文件中后，重启ssh 命令如下：
find / -name sftp-server
vi /etc/ssh/sshd_config 找到Subsystem sftp internal-sftp 替换为 Subsystem sftp 刚刚查找到的位置 保存后重启ssh service sshd restart
3.7：善后工作: 关闭telnet服务
systemctl stop telnet.socket