OpenSSH从7.4升级到9.8的过程 亲测--图文详解

 一、下载软件

  下载openssh    下载地址：   Downloads | Library

下载openssl

Index of /pub/OpenBSD/OpenSSH/

zlib Home Site

安装的 openssl-3.3.1.tar.gz ,安装3.3.2有问题  安装有问题，

二、安装依赖

yum install -y perl-CPAN perl-ExtUtils-CBuilder perl-ExtUtils-MakeMaker

三、安装 openssl-3.3.1.tar.gz

解压斌进入 openssl 

编译  执行./config --prefix=/usr/local/openssl --shared 生成MakeFile文件

./config --prefix=/usr/local/openssl --shared

make -j4 && make -j4 install

#路径写入etc/ld.so.conf

echo '/usr/local/openssl/lib64' >> /etc/ld.so.conf

 #备份ssh配置文件

cp -p /etc/ssh/sshd_config /etc/ssh/sshd_config.bak
cp -p /usr/sbin/sshd /usr/sbin/sshd.bak
cp -p /usr/bin/ssh /usr/bin/ssh.bak
cp -p /usr/bin/ssh-keygen /usr/bin/ssh-keygen.bak
cp -p /etc/ssh/ssh_host_ecdsa_key.pub /etc/ssh/ssh_host_ecdsa_key.pub.bak

删除旧的软链接

rm -rf  /usr/bin/openssl
rm -rf  /usr/include/openssl  
rm -rf  /usr/lib64/libssl.so  
rm -rf /usr/lib64/libcrypto.so.1.0.2k

创建新的openssl软链接

ln -s /usr/local/openssl/include/openssl /usr/include/openssl  
ln -s /usr/local/openssl/bin/openssl /usr/bin/openssl
ln -s /usr/local/openssl/lib/libssl.so.3 /usr/lib64/libssl.so 
ln -s /usr/local/openssl/lib/libcrypto.so.3 /usr/lib64/libcrypto.so.3

使修改后的/etc/ld.so.conf生效

 ldconfig -v

验证是否成功安装

查看openssl版本

openssl version -a

四、安装  zlib

用浏览器打开下载 http://www.zlib.net/zlib-1.2.11.tar.gz     可以去官网自己下载

tar -xvzf zlib-1.2.11.tar.gz cd zlib-1.2.11 ./configure make make install

tar -xvzf zlib-1.2.11.tar.gz
cd zlib-1.2.11
./configuremake -j4 && make -j4 install

五、安装openssh

openssh 我下载的是9.8的版本 
https://cdn.openbsd.org/pub/OpenBSD/OpenSSH/portable/openssh-9.8p1.tar.gz

解压 tar xvf openssh-9.8p1.tar.gz

进入解压目录

./configure --prefix=/usr/local/openssh    --with-ssl-dir=/usr/local/openssl --with-zlib  

make -j4 && make -j4 install

#ssh允许root登录、需要密码进行验证

echo 'PermitRootLogin yes' >>/usr/local/openssh/etc/sshd_config
echo 'PubkeyAuthentication yes' >>/usr/local/openssh/etc/sshd_config
echo 'PasswordAuthentication yes' >>/usr/local/openssh/etc/sshd_config

 #将编译安装的新配置文件 拷贝到原路径下

#删除旧的rm -rf    /etc/ssh/sshd_config
rm -rf    /usr/sbin/sshd
rm -rf    /usr/bin/ssh
rm -rf    /usr/bin/ssh-keygen
rm -rf    /etc/ssh/ssh_host_ecdsa_key.pub#复制新的
cp /usr/local/openssh/etc/sshd_config /etc/ssh/sshd_config
cp /usr/local/openssh/sbin/sshd /usr/sbin/sshd
cp /usr/local/openssh/bin/ssh /usr/bin/ssh
cp /usr/local/openssh/bin/ssh-keygen /usr/bin/ssh-keygen
cp /usr/local/openssh/etc/ssh_host_ecdsa_key.pub /etc/ssh/ssh_host_ecdsa_key.pub

#拷贝启动脚本

cp -p contrib/redhat/sshd.init /etc/init.d/sshd

#给sshd添加可执行权限

chmod +x /etc/init.d/sshd

#设置开机自启

systemctl enable sshd

#重新启动sshd服务

systemctl restart sshd

#查看sshd服务状态

systemctl status sshd

#查看ssh版本是否升级成功，可以查看到已经是9.5版本了

ssh -V 

3.3.2安装报错 还没解决。。。。。。

(base) [root@localhost openssl-3.3.2]# ./config shared
Can't locate IPC/Cmd.pm in @INC (@INC contains: /opt/openssl-3.3.2/util/perl /usr/local/lib64/perl5 /usr/local/share/perl5 /usr/lib64/perl5/vendor_perl /usr/share/perl5/vendor_perl /usr/lib64/perl5 /usr/share/perl5 . /opt/openssl-3.3.2/external/perl/Text-Template-1.56/lib) at /opt/openssl-3.3.2/util/perl/OpenSSL/config.pm line 19.
BEGIN failed--compilation aborted at /opt/openssl-3.3.2/util/perl/OpenSSL/config.pm line 19.
Compilation failed in require at /opt/openssl-3.3.2/Configure line 23.
BEGIN failed--compilation aborted at /opt/openssl-3.3.2/Configure line 23.

yum install perl-IPC-Cmd -y