Deny Hosts 对ssh服务进行黑白名单过滤
自定义安装
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
/etc/init.d/daemon-control start #启动denyhosts
chkconfig daemon-control on #将denghosts设成开机启动配置文件简要说明
vim /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
#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错误排除
在输入运行命令时,有错误提示打不开denyhosts.py文件,没有这个目录。如:
#service denyhost start
starting DenyHosts: /usr/bin/env python /usr/bin/denyhosts.py --daemon --config=/usr/share/denyhosts/denyhosts.cfg
python: can't open file '/usr/bin/denyhosts.py': [Errno 2] No such file or directory
经过查找发现denyhosts.py在目录/usr/local/bin/目录下,于是修改daemon-control文件
#vi daemon-control
DENYHOSTS_BIN = "/usr/bin/denyhosts.py"
DENYHOSTS_LOCK = "/var/lock/subsys/denyhosts"
DENYHOSTS_CFG = "/usr/share/denyhosts/denyhosts.cfg"配置文件内容
#日志文件存放位置(直接用默认即可)
SECURE_LOG = /var/log/secure
#系统控制用户登录文件
HOSTS_DENY = /etc/hosts.deny
#过多久后清除已经禁止的
PURGE_DENY =
#禁止服务名称
BLOCK_SERVICE = sshd
#无效用户登录失败次数(/etc/passwd文件中没有的用户)
DENY_THRESHOLD_INVALID = 1
#普通用户登录失败次数(/etc/passwd文件中有的用户
DENY_THRESHOLD_VALID = 10
#root登录失败次数
DENY_THRESHOLD_ROOT = 3
DENY_THRESHOLD_RESTRICTED = 1
#存放denyhosts信息的位置,可以从这里看到被攻击的情况
WORK_DIR = /usr/share/denyhosts/data
SUSPICIOUS_LOGIN_REPORT_ALLOWED_HOSTS=YES
#禁止做逆向域名解析
HOSTNAME_LOOKUP=NO
LOCK_FILE = /var/lock/subsys/denyhosts
#denyhosts自己的日志文件
DAEMON_LOG = /var/log/denyhosts
#设置邮件报警
ADMIN_EMAIL = #mail1.apicloud.com,mail2.apicloud.com
SMTP_HOST = mail.163.com
SMTP_PORT = 25
SMTP_USERNAME=gitlab2015@163.com
SMTP_PASSWORD=nxgfvizafijytymx
SMTP_FROM = DenyHosts <gitlab2015@163.com>
SMTP_SUBJECT = DenyHosts Report
#重置设置
AGE_RESET_VALID=5d
AGE_RESET_ROOT=25d
AGE_RESET_RESTRICTED=25d
AGE_RESET_INVALID=10d
DAEMON_SLEEP = 30s
DAEMON_PURGE = 1h简单修改
DENY_THRESHOLD_INVALID = 5 #无效用户名限制登陆次数
DENY_THRESHOLD_VALID = 10 #有效用户名限制登陆次数
DENY_THRESHOLD_ROOT = 5 #root限制登陆次数
AGE_RESET_ROOT = 1d #root用户登录失败计数归零的时间
ADMIN_EMAIL = root@localhost #管理员邮箱黑白名单
#黑名单
vim /etc/hosts.deny
#白名单
vim /etc/hosts.allow
#启停状态命令
systemctl start denyhosts
systemctl stop denyhosts
systemctl status denyhosts
自启动
chkconfig denyhosts on本作品采用 知识共享署名-相同方式共享 4.0 国际许可协议 进行许可。
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