CentOS7 升级openssh8.9

一、查看当前版本、下载相关软件包

 二、安装zlib

[root@localhost opt]# tar -zxvf zlib-1.2.11.tar.gz
[root@localhost opt]# cd zlib-1.2.11/
[root@localhost zlib-1.2.11]# ./configure && make && make install

三、安装openssl

[root@localhost opt]# tar -zxvf openssl-1.1.1m.tar.gz
[root@localhost openssl-1.1.1m]# ./config --prefix=/usr/ && make && make install
[root@localhost openssl-1.1.1m]# openssl version
OpenSSL 1.1.1m  14 Dec 2021

三、安装pam

[root@localhost openssl-1.1.1m]# yum install -y pam pam-devel

四、安装openssh

[root@localhost openssl-1.1.1m]# rm -rf /etc/ssh/*
[root@localhost opt]# tar -zxvf openssh-8.9p1.tar.gz 
[root@localhost opt]# cd openssh-8.9p1/
[root@localhost openssh-8.9p1]# ./configure --prefix=/usr/ --sysconfdir=/etc/ssh  --with-zlib   --with-md5-passwords   --with-pam
[root@localhost openssh-8.9p1]# make && make install
[root@localhost openssh-8.9p1]# ssh -V
OpenSSH_8.9p1, OpenSSL 1.1.1m  14 Dec 2021

五、修改openssh配置文件

[root@localhost openssh-8.9p1]# vim /etc/ssh/sshd_config
PermitRootLogin yes
PubkeyAuthentication yes
PasswordAuthentication yes

　　

 六、配置pam及开机启动

[root@localhost openssh-8.9p1]# cp -a contrib/redhat/sshd.init /etc/init.d/sshd
[root@localhost openssh-8.9p1]# cp -a contrib/redhat/sshd.pam /etc/pam.d/sshd.pam
[root@localhost openssh-8.9p1]# chmod +x /etc/init.d/sshd
[root@localhost ~]# service sshd start
[root@localhost ~]# chkconfig --add sshd
[root@localhost ~]# chkconfig sshd on

七、升级完成

[root@localhost ~]# ssh -V
OpenSSH_8.9p1, OpenSSL 1.1.1m  14 Dec 2021
[root@localhost ~]#