{
    "content": [
        {
            "type": "text",
            "text": "# fail2ban (man)\n\n## NAME\n\nfail2ban - a set of server and client programs to limit brute force authentication attempts.\n\n## DESCRIPTION\n\nFail2Ban  consists of a client, server and configuration files to limit brute force authenti‐\ncation attempts.\n\n## Sections\n\n- **NAME**\n- **DESCRIPTION**\n- **LIMITATION**\n- **FILES**\n- **AUTHOR**\n- **REPORTING BUGS**\n- **COPYRIGHT**\n- **SEE ALSO**\n\nUse structuredContent.sections for detailed options, examples, and full documentation.\n"
        }
    ],
    "structuredContent": {
        "command": "fail2ban",
        "section": "",
        "mode": "man",
        "summary": "fail2ban - a set of server and client programs to limit brute force authentication attempts.",
        "synopsis": null,
        "tldr_summary": null,
        "tldr_examples": [],
        "tldr_source": null,
        "flags": [],
        "examples": [],
        "see_also": [
            {
                "name": "fail2ban-server",
                "section": "1",
                "url": "https://www.chedong.com/phpMan.php/man/fail2ban-server/1/json"
            },
            {
                "name": "fail2ban-client",
                "section": "1",
                "url": "https://www.chedong.com/phpMan.php/man/fail2ban-client/1/json"
            },
            {
                "name": "fail2ban-regex",
                "section": "1",
                "url": "https://www.chedong.com/phpMan.php/man/fail2ban-regex/1/json"
            },
            {
                "name": "jail.conf",
                "section": "5",
                "url": "https://www.chedong.com/phpMan.php/man/jail.conf/5/json"
            }
        ],
        "section_outline": [
            {
                "name": "NAME",
                "lines": 2,
                "subsections": []
            },
            {
                "name": "DESCRIPTION",
                "lines": 22,
                "subsections": []
            },
            {
                "name": "LIMITATION",
                "lines": 9,
                "subsections": []
            },
            {
                "name": "FILES",
                "lines": 2,
                "subsections": []
            },
            {
                "name": "AUTHOR",
                "lines": 2,
                "subsections": []
            },
            {
                "name": "REPORTING BUGS",
                "lines": 2,
                "subsections": []
            },
            {
                "name": "COPYRIGHT",
                "lines": 4,
                "subsections": []
            },
            {
                "name": "SEE ALSO",
                "lines": 5,
                "subsections": []
            }
        ],
        "sections": {
            "NAME": {
                "content": "fail2ban - a set of server and client programs to limit brute force authentication attempts.\n",
                "subsections": []
            },
            "DESCRIPTION": {
                "content": "Fail2Ban  consists of a client, server and configuration files to limit brute force authenti‐\ncation attempts.\n\nThe server program fail2ban-server is  responsible  for  monitoring  log  files  and  issuing\nban/unban  commands.   It gets configured through a simple protocol by fail2ban-client, which\ncan also read configuration files and  issue  corresponding  configuration  commands  to  the\nserver.\n\nFor  details  on  the configuration of fail2ban see the jail.conf(5) manual page.  A jail (as\nspecified in jail.conf) couples filters and actions definitions for any given list  of  files\nto get monitored.\n\nFor  details on the command-line options of fail2ban-server see the fail2ban-server(1) manual\npage.\n\nFor details on the command-line options and commands for configuring the server via fail2ban-\nclient see the fail2ban-client(1) manual page.\n\nFor testing regular expressions specified in a filter using the fail2ban-regex program may be\nof use and its manual page is fail2ban-regex(1).\n\n",
                "subsections": []
            },
            "LIMITATION": {
                "content": "Fail2Ban is able to reduce the rate of incorrect authentications attempts however  it  cannot\neliminate  the  risk  that  weak authentication presents.  Configure services to use only two\nfactor or public/private authentication mechanisms if you really want to protect services.\n\nA local user is able to inject messages into syslog and using a Fail2Ban jail that reads from\nsyslog,  they can effectively trigger a DoS attack against any IP. Know this risk and config‐\nure Fail2Ban/grant shell access accordingly.\n\n",
                "subsections": []
            },
            "FILES": {
                "content": "/etc/fail2ban/*\n",
                "subsections": []
            },
            "AUTHOR": {
                "content": "Manual page written by Daniel Black and Yaroslav Halchenko\n",
                "subsections": []
            },
            "REPORTING BUGS": {
                "content": "Report bugs to https://github.com/fail2ban/fail2ban/issues\n",
                "subsections": []
            },
            "COPYRIGHT": {
                "content": "Copyright © 2013\nCopyright of modifications held by their respective authors.  Licensed under the GNU  General\nPublic License v2 (GPL).\n",
                "subsections": []
            },
            "SEE ALSO": {
                "content": "fail2ban-server(1) fail2ban-client(1) fail2ban-regex(1) jail.conf(5)\n\n\n\nFail2Ban                                     March 2013                                  FAIL2BAN(1)",
                "subsections": []
            }
        }
    }
}