proftpd 给出“登录不正确”错误

Question

我已经proftpd安装了一段时间，但从今天起我无法登录到 ftp 服务器。我不断收到错误530 login incorrect。

我proftpd在调试模式下重新启动并在尝试登录时得到以下响应：

- srv2.********.nl proftpd[1660] 159.253.3.237 (83.247.33.135[83.247.33.135]): FTP session opened.
- srv2.********.nl proftpd[1660] 159.253.3.237 (83.247.33.135[83.247.33.135]): dispatching PRE_CMD command 'USER bernhard' to mod_tls
- srv2.********.nl proftpd[1660] 159.253.3.237 (83.247.33.135[83.247.33.135]): dispatching PRE_CMD command 'USER bernhard' to mod_core
- srv2.********.nl proftpd[1660] 159.253.3.237 (83.247.33.135[83.247.33.135]): dispatching PRE_CMD command 'USER bernhard' to mod_core
- srv2.********.nl proftpd[1660] 159.253.3.237 (83.247.33.135[83.247.33.135]): dispatching PRE_CMD command 'USER bernhard' to mod_delay
- srv2.********.nl proftpd[1660] 159.253.3.237 (83.247.33.135[83.247.33.135]): dispatching PRE_CMD command 'USER bernhard' to mod_auth
- srv2.********.nl proftpd[1660] 159.253.3.237 (83.247.33.135[83.247.33.135]): dispatching CMD command 'USER bernhard' to mod_auth
- srv2.********.nl proftpd[1660] 159.253.3.237 (83.247.33.135[83.247.33.135]): dispatching POST_CMD command 'USER bernhard' to mod_delay
- srv2.********.nl proftpd[1660] 159.253.3.237 (83.247.33.135[83.247.33.135]): dispatching LOG_CMD command 'USER bernhard' to mod_log
- srv2.********.nl proftpd[1660] 159.253.3.237 (83.247.33.135[83.247.33.135]): dispatching PRE_CMD command 'PASS (hidden)' to mod_tls
- srv2.********.nl proftpd[1660] 159.253.3.237 (83.247.33.135[83.247.33.135]): dispatching PRE_CMD command 'PASS (hidden)' to mod_core
- srv2.********.nl proftpd[1660] 159.253.3.237 (83.247.33.135[83.247.33.135]): dispatching PRE_CMD command 'PASS (hidden)' to mod_core
- srv2.********.nl proftpd[1660] 159.253.3.237 (83.247.33.135[83.247.33.135]): dispatching PRE_CMD command 'PASS (hidden)' to mod_delay
- srv2.********.nl proftpd[1660] 159.253.3.237 (83.247.33.135[83.247.33.135]): dispatching PRE_CMD command 'PASS (hidden)' to mod_auth
- srv2.********.nl proftpd[1660] 159.253.3.237 (83.247.33.135[83.247.33.135]): dispatching CMD command 'PASS (hidden)' to mod_auth
- srv2.********.nl proftpd[1660] 159.253.3.237 (83.247.33.135[83.247.33.135]): retrieved UID 500 for user 'bernhard'
- srv2.********.nl proftpd[1660] 159.253.3.237 (83.247.33.135[83.247.33.135]): retrieved group ID: 500
- srv2.********.nl proftpd[1660] 159.253.3.237 (83.247.33.135[83.247.33.135]): retrieved group name: bernhard
- srv2.********.nl proftpd[1660] 159.253.3.237 (83.247.33.135[83.247.33.135]): ROOT PRIVS at mod_auth_pam.c:311
- srv2.********.nl proftpd[1660] 159.253.3.237 (83.247.33.135[83.247.33.135]): RELINQUISH PRIVS at mod_auth_pam.c:481
- srv2.********.nl proftpd[1660] 159.253.3.237 (83.247.33.135[83.247.33.135]): USER bernhard (Login failed): Incorrect password.
- srv2.********.nl proftpd[1660] 159.253.3.237 (83.247.33.135[83.247.33.135]): dispatching POST_CMD_ERR command 'PASS (hidden)' to mod_delay
- srv2.********.nl proftpd[1660] 159.253.3.237 (83.247.33.135[83.247.33.135]): dispatching LOG_CMD_ERR command 'PASS (hidden)' to mod_log
- srv2.********.nl proftpd[1660] 159.253.3.237 (83.247.33.135[83.247.33.135]): dispatching LOG_CMD_ERR command 'PASS (hidden)' to mod_auth
- srv2.********.nl proftpd[1660] 159.253.3.237 (83.247.33.135[83.247.33.135]): FTP session closed.

Answer 1

如果这是一个 RHEL 或 CentOS EL6.x 系统，修改你的 PAM 配置很重要，因为随包提供的配置不好：

编辑：/etc/pam.d/proftpd反映：

#%PAM-1.0M-1.0
auth required pam_listfile.so item=user sense=deny file=/etc/ftpusers onerr=succeed
auth required pam_shells.so
auth include system-auth
account include system-auth
#session include system-auth
session required pam_loginuid.so