差異處
這裏顯示兩個版本的差異處。
tech:install_denyhosts [2012/09/18 15:37] – 建立 jonathan | tech:install_denyhosts [2014/04/19 09:27] (目前版本) – jonathan | ||
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+ | ====== CentOS5 安裝 DenyHosts 阻絕 ssh 暴力破解 | ||
+ | DenyHosts 是透過登入失敗紀錄的來源 ip 來判別是否自動將此 ip 列入黑名單的工具. | ||
+ | ===== 安裝方式 ===== | ||
+ | * 先安裝好 [[http:// | ||
+ | * 透過 yum install 安裝 DenyHosts< | ||
+ | yum install denyhosts | ||
+ | </ | ||
+ | |||
+ | ===== 設定方式 ===== | ||
+ | * vi / | ||
+ | : | ||
+ | # Redhat or Fedora Core: | ||
+ | SECURE_LOG = / | ||
+ | : | ||
+ | # Most operating systems: | ||
+ | HOSTS_DENY = / | ||
+ | : | ||
+ | # never purge: | ||
+ | PURGE_DENY = | ||
+ | : | ||
+ | # To block only sshd: | ||
+ | BLOCK_SERVICE | ||
+ | : | ||
+ | DENY_THRESHOLD_INVALID = 5 | ||
+ | : | ||
+ | DENY_THRESHOLD_VALID = 10 | ||
+ | : | ||
+ | DENY_THRESHOLD_ROOT = 1 | ||
+ | : | ||
+ | DENY_THRESHOLD_RESTRICTED = 1 | ||
+ | : | ||
+ | WORK_DIR = / | ||
+ | : | ||
+ | SUSPICIOUS_LOGIN_REPORT_ALLOWED_HOSTS=YES | ||
+ | : | ||
+ | # Redhat/ | ||
+ | LOCK_FILE = / | ||
+ | : | ||
+ | # | ||
+ | # OPTIONAL Setting... | ||
+ | # | ||
+ | ADMIN_EMAIL = [email protected] | ||
+ | SMTP_HOST = localhost | ||
+ | SMTP_PORT = 25 | ||
+ | # | ||
+ | # | ||
+ | SMTP_FROM = DenyHosts < | ||
+ | SMTP_SUBJECT = DenyHosts Report | ||
+ | # | ||
+ | : | ||
+ | SYSLOG_REPORT=YES | ||
+ | # | ||
+ | AGE_RESET_VALID=5d | ||
+ | AGE_RESET_ROOT=25d | ||
+ | AGE_RESET_RESTRICTED=25d | ||
+ | AGE_RESET_INVALID=10d | ||
+ | # | ||
+ | : | ||
+ | # | ||
+ | DAEMON_LOG = / | ||
+ | # | ||
+ | # | ||
+ | DAEMON_SLEEP = 30s | ||
+ | DAEMON_PURGE = 1h | ||
+ | : | ||
+ | </ | ||
+ | |||
+ | ===== 啟動服務 ===== | ||
+ | * 啟動服務< | ||
+ | service denyhosts start | ||
+ | </ | ||
+ | * 檢查運作紀錄< | ||
+ | tail -f / | ||
+ | </ | ||
+ | [root@xen-server ~]# tail -f / | ||
+ | 2012-09-18 15: | ||
+ | 2012-09-18 15: | ||
+ | 2012-09-18 15: | ||
+ | 2012-09-18 15: | ||
+ | 2012-09-18 15: | ||
+ | 2012-09-18 15: | ||
+ | 2012-09-18 15: | ||
+ | 2012-09-18 15: | ||
+ | 2012-09-18 15: | ||
+ | 2012-09-18 15: | ||
+ | </ | ||
+ | |||
+ | ===== 設定白名單 ===== | ||
+ | 當出現不小心打錯密碼被列入黑名單後, | ||
+ | vi / | ||
+ | : | ||
+ | sshd: | ||
+ | </ | ||
+ | 這樣 192.168.0.252 雖然出現在 / | ||
+ | |||
+ | |||
+ | ===== 參考網址 ===== | ||
+ | * http:// | ||
+ | * http:// | ||
+ | * https:// | ||
+ | |||
+ | {{tag> |