1、安装依赖包基础条件
yum install gcc
yum install gcc-c++
yum install perl
yum install perl-IPC-Cmd
yum install pam
yum install pam-devel
sudo yum install perl-Data-Dumper问题一：提示yum不可用 镜像源问题更换阿里源即可
wget -O /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-7.repo官网地址：
OpenSSL官网地址：https://www.openssl.org/ OpenSSH官网地址：https://www.openssh.com/zlib地址：
wget http://www.zlib.net/zlib-1.3.1.tar.gz注意：openssl版本大于1.1.1则无需升级 openssl，反之需要升级
升级openssl
下载解压
笔者在 cd /datasoft/openssl-3.4.0
其中 ./config --prefix=/usr/local/openssl-3.4.0 安装路径 先编译环境是否存在问题 没问题则安装
./config --prefix=/usr/local/openssl-3.4.0
安装
make && make install替换新安装路径软连接 sf强制转换
echo /usr/local/openssl-3.4.0/lib64 >> /etc/ld.so.conf
ln -sf /usr/local/openssl-3.4.0/bin/openssl /usr/bin/openssl
ln -sf /usr/local/openssl-3.4.0/include/openssl /usr/include/openssl
ln -sf /usr/local/openssl-3.4.0/lib64/libssl.so.3 /usr/lib64/libssl.so.3
ln -sf /usr/local/openssl-3.4.0/lib64/libcrypto.so.3 /usr/lib64/libcrypto.so.3
ldconfig -v openssl version
--------------------------------------------------------------------------------------------------------------------------------
2、升级openssh
下载zlib需要前置条件
wget http://www.zlib.net/zlib-1.3.1.tar.gz
cd zlib-1.3.1 zlib安装
./configure --prefix=/usr/local/zlib-1.3.1 make && make install权限设置
chmod 600 /etc/ssh/ssh_host_rsa_key /etc/ssh/ssh_host_ecdsa_key禁用此项不然安装会提示不兼容问题
/etc/ssh/ssh_host_ed25519_key
vim ect/ssh/sshd_config
#GSSAPIAuthentication yes
#GSSAPICleanupCredentials no./configure --prefix=/usr/local/openssh-9.8p1 --sysconfdir=/etc/ssh --with-pam --with-ssl-dir=/usr/local/openssl-3.4.0 --with-zlib=/usr/local/zlib-1.3.1 --without-hardeningmake && make install新openssh 路径设置 执行命令后点击y覆盖即可
cp -arpf /usr/local/openssh-9.8p1/bin/scp /usr/bin/
cp -arpf /usr/local/openssh-9.8p1/bin/sftp /usr/bin/
cp -arpf /usr/local/openssh-9.8p1/bin/ssh /usr/bin/
cp -arpf /usr/local/openssh-9.8p1/bin/ssh-add /usr/bin/
cp -arpf /usr/local/openssh-9.8p1/bin/ssh-agent /usr/bin/
cp -arpf /usr/local/openssh-9.8p1/bin/ssh-keygen /usr/bin/
cp -arpf /usr/local/openssh-9.8p1/bin/ssh-keyscan /usr/bin/
cp -arpf /usr/local/openssh-9.8p1/sbin/sshd /usr/sbin/sshd【解压路径】cd /datasoft/openssh-9.8p1
cp -a contrib/redhat/sshd.init /etc/init.d/sshd
cp -a contrib/redhat/sshd.pam /etc/pam.d/sshd.pam
chmod +x /etc/init.d/sshd
mv /usr/lib/systemd/system/sshd.service /usr/lib/systemd/system/sshd.service.bak自启动
systemctl daemon-reload
systemctl enable sshd.socket
sshd -t
systemctl restart sshd-------------------------------------------------------------------------------------------------------------------------------
查看
最后注意
vim /etc/ssh/sshd_config
请开通root直连和端口22端口 即可 enjoy
