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DenyHosts

DenyHosts(项目主页:http://denyhosts.sourceforge.net/) 是运行于Linux上的一款预防SSH暴力破解的软件,可以从http://sourceforge.net/projects/denyhosts/files/ 进行下载,然后将下载回来的DenyHosts-2.6.tar.gz源码包上传到Linux系统中。 可一键安装或手动安装


①直接运行一键脚本

wget -N --no-check-certificate https://raw.githubusercontent.com/jlw345/DenyHosts/master/denyhosts.sh && chmod +x denyhosts.sh && ./denyhosts.sh



②以下是手动安装

wget https://github.com/jlw345/DenyHosts/raw/master/DenyHosts-2.6.tar.gz #下载安装包

tar zxvf DenyHosts-2.6.tar.gz #解压源码包

cd DenyHosts-2.6 #进入安装解压目录

python setup.py install #安装DenyHosts

cd /usr/share/denyhosts/ #默认安装路径

cp denyhosts.cfg-dist denyhosts.cfg #denyhosts.cfg为配置文件

cp daemon-control-dist daemon-control #daemon-control为启动程序

chown root daemon-control #添加root权限

chmod 700 daemon-control #修改为可执行文件

ln -s /usr/share/denyhosts/daemon-control /etc/init.d #对daemon-control进行软连接,方便管理安装到这一步就完成了。

/etc/init.d/daemon-control start #启动denyhosts

chkconfig daemon-control on #将denghosts设成开机启动


vi /usr/share/denyhosts/denyhosts.cfg

#编辑配置文件,另外关于配置文件一些参数,通过grep -v "^#" denyhosts.cfg查看

SECURE_LOG = /var/log/secure

#ssh 日志文件,redhat系列根据/var/log/secure文件来判断;Mandrake、FreeBSD根据 /var/log/auth.log来判断

#SUSE则是用/var/log/messages来判断,这些在配置文件里面都有很详细的解释。

HOSTS_DENY = /etc/hosts.deny #控制用户登陆的文件

PURGE_DENY = 30m #过多久后清除已经禁止的,设置为30分钟;

‘m’ = minutes

‘h’ = hours

‘d’ = days

‘w’ = weeks

‘y’ = years

BLOCK_SERVICE = sshd #禁止的服务名,当然DenyHost不仅仅用于SSH服务

DENY_THRESHOLD_INVALID = 1 #允许无效用户失败的次数

DENY_THRESHOLD_VALID = 3 #允许普通用户登陆失败的次数

DENY_THRESHOLD_ROOT = 3 #允许root登陆失败的次数

DAEMON_LOG = /var/log/denyhosts #DenyHosts日志文件存放的路径,默认

RESET_ON_SUCCESS = yes #如果一个ip登陆成功后,失败的登陆计数是否重置为0

更改DenyHosts的默认配置之后,重启DenyHosts服务即可生效:

/etc/init.d/daemon-control restart #重启denyhosts

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