Denyhosts

denyhosts下载地址：http://sourceforge.net/projects/denyhosts/files/

安装：

more README.txt

denyhosts.cfg配置文件实例：

SECURE_LOG = /var/log/secure
HOSTS_DENY = /etc/hosts.deny
PURGE_DENY =
BLOCK_SERVICE  = ALL
DENY_THRESHOLD_INVALID = 2
DENY_THRESHOLD_VALID = 3
DENY_THRESHOLD_ROOT = 5
DENY_THRESHOLD_RESTRICTED = 1
WORK_DIR = /usr/share/denyhosts/data
SUSPICIOUS_LOGIN_REPORT_ALLOWED_HOSTS=YES
HOSTNAME_LOOKUP=YES
LOCK_FILE = /var/lock/subsys/denyhosts
ADMIN_EMAIL =
SMTP_HOST = localhost
SMTP_PORT = 25
SMTP_FROM = DenyHosts <nobody@localhost>
SMTP_SUBJECT = DenyHosts Report
AGE_RESET_VALID=5d
AGE_RESET_ROOT=25d
AGE_RESET_RESTRICTED=25d
AGE_RESET_INVALID=10d
DAEMON_LOG = /var/log/denyhosts
DAEMON_SLEEP = 30s
DAEMON_PURGE = 1h