1.上传openSSH安装包

openssh-9.8p1-1.el7.x86_64.rpm openssh-clients-9.8p1-1.el7.x86_64.rpm openssh-debuginfo-9.8p1-1.el7.x86_64.rpm openssh-server-9.8p1-1.el7.x86_64.rpm 

2.删除原版本（若原先不是yum安装的也可直接安装新的）

yum remove openssh* 

3.安装新版本

rpm -Uvh openssh-*.rpm 

4.查看最新版本

rpm -qa|grep openssh  openssh-clients-9.8p1-1.el7.x86_64 openssh-9.8p1-1.el7.x86_64 openssh-debuginfo-9.8p1-1.el7.x86_64 openssh-server-9.8p1-1.el7.x86_64 

5.重启ssh

systemctl restart sshd.service 

6.查看ssh状态

systemctl status sshd.service 

7.若重启失败，报类似的错

Permissions 0640 for ‘/etc/ssh/ssh_host_rsa_key’ are too open. 

修改权限

chmod 0600 /etc/ssh/ssh_host_rsa_key chmod 0600 /etc/ssh/ssh_host_ecdsa_key chmod 0600 /etc/ssh/ssh_host_ed25519_key 

8.再次重启并新开窗口，看是否可以正常连接，并查看openSSH版本

[root@localhost ssh]# ssh -V OpenSSH_9.8p1, OpenSSL 3.0.14 4 Jun 2024