centos7 openssh升级9.7 详细教程

准备rpm安装包
版本信息如下：openssh-9.7p1-1.el7.centos.x86_64-ssh-copy-id-openssl-opensource.tgz

设置窗⼝永不超时
TMOUT=#

备份原ssh配置

cd /etc/ssh/
cp sshd_config sshd_config_bak

检测当前安装包版本

[root@localhost ~]# rpm -qa |grep openssh
openssh-clients-7.4p1-16.el7.x86_64
openssh-server-7.4p1-16.el7.x86_64
openssh-7.4p1-16.el7.x86_64

解压压缩包

cd /usr/local/src/
tar -xvzf openssh-9.7p1-1.el7.centos.x86_64-ssh-copy-id-openssl-opensource.tgz

升级openssh
rpm -Uvh openssh-*.rpm

检测是否升级成功

[root@localhost ~]# rpm -qa |grep openssh
openssh-debuginfo-9.7p1-1.el7.centos.x86_64
openssh-9.7p1-1.el7.centos.x86_64
openssh-server-9.7p1-1.el7.centos.x86_64
openssh-clients-9.7p1-1.el7.centos.x86_64

[root@localhost ~]# ssh -V
OpenSSH_9.7p1, OpenSSL 1.1.1w  11 Sep 2023

ssh配置备份恢复

cd /etc/ssh
mv sshd_config sshd_config_new
cp sshd_config_bak sshd_config
chmod 600 /etc/ssh/ssh_host_rsa_key
chmod 600 /etc/ssh/ssh_host_ecdsa_key
chmod 600 /etc/ssh/ssh_host_ed25519_key
sed -i 's#UsePAM yes#UsePAM no#g' /etc/ssh/sshd_config
cat /etc/ssh/sshd_config |grep UsePAM
# ssh登录权限相关
vim /etc/ssh/sshd_config
PermitRootLogin yes
PasswordAuthentication yes
ChallengeResponseAuthentication no
UsePAM yes
X11Forwarding yes

重启ssh服务
systemctl restart sshd