Centos7使用DenyHosts防止ssh暴力破解

下载DenyHosts包

[root@localhost ~]# wget http://jaist.dl.sourceforge.net/project/denyhosts/denyhosts/2.6/DenyHosts-2.6.tar.gz

安装DenyHosts

[root@localhost ~]# tar xf DenyHosts-2.6.tar.gz  [root@localhost ~]# cd DenyHosts-2.6  [root@localhost DenyHosts-2.6]# python setup.py install

制作配置文件

[root@localhost DenyHosts-2.6]# cp denyhosts.cfg-dist /etc/denyhosts.cfg  [root@localhost DenyHosts-2.6]# cp daemon-control-dist daemon-control  [root@localhost DenyHosts-2.6]# chown root daemon-control  [root@localhost DenyHosts-2.6]# chmod 700 daemon-control  

修改配置文件

将daemon-control中的#DENYHOSTS_CFG = “/usr/share/denyhosts/denyhosts.cfg”改为 DENYHOSTS_CFG = “/etc/denyhosts.cfg”

启动

[root@localhost DenyHosts-2.6]# ./daemon-control start(注意相对路径)

测试另外一台服务器远程连接172.16.1.16

默认允许五次,测试发现登陆失败五次之后不允许登陆

[root@localhost ~]# ssh [email protected]  [email protected]'s password:  Permission denied, please try again.  [email protected]'s password:  Permission denied, please try again.  [email protected]'s password:  Permission denied (publickey,gssapi-keyex,gssapi-with-mic,password).  [root@localhost ~]#  [root@localhost ~]# ssh [email protected]  [email protected]'s password:  Permission denied, please try again.  [email protected]'s password:  Permission denied, please try again.  [email protected]'s password:  Permission denied (publickey,gssapi-keyex,gssapi-with-mic,password).  [root@localhost ~]# ssh [email protected]  [email protected]'s password:  Permission denied, please try again.  [email protected]'s password:  Permission denied, please try again.  [email protected]'s password:  Permission denied (publickey,gssapi-keyex,gssapi-with-mic,password).  [root@localhost ~]# ssh [email protected]  [email protected]'s password:  Permission denied, please try again.  [email protected]'s password:  Permission denied, please try again.  [email protected]'s password:  Permission denied (publickey,gssapi-keyex,gssapi-with-mic,password).  [root@localhost ~]# ssh [email protected]  ssh_exchange_identification: read: Connection reset by peer  

查看hosts.deny文件

登陆连续失败之后就会把ip地址写在hosts.deny文件

172.16.1.112的ip已经被限制,到此功能实现。

本文原创地址:https://www.linuxprobe.com/centos-denyhosts.html编辑:王华超,审核员:逄增宝

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