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NIKTO Web Server Vulnerability Scanner


Nikto is an Open Source (GPL) web server scanner which performs comprehensive tests against web servers for multiple items.


  • Checks for outdated server components.
  • Attempt to identify installed web servers and software.

Supported Operating System

  • Linux



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-ask+                    Whether to ask about submitting updates

                                             yes   Ask about each (default)

                             no    Don't ask, don't send

                                            auto  Don't ask, just send

-Cgidirs+             Scan these CGI dirs: "none", "all", or values like "/cgi/ /cgi-a/"

-config+               Use this config file

-Display+             Turn on/off display outputs:

                               1     Show redirects

                               2     Show cookies received

                               3     Show all 200/OK responses

                               4     Show URLs which require authentication

                               D     Debug output

                               E     Display all HTTP errors

                               P     Print progress to STDOUT

                               S     Scrub output of IPs and hostnames

                               V     Verbose output

-dbcheck              Check database and other key files for syntax errors

-evasion+            Encoding technique:

                               1     Random URI encoding (non-UTF8)

                               2     Directory self-reference (/./)

                               3     Premature URL ending

                               4     Prepend long random string

                               5     Fake parameter

                               6     TAB as request spacer

                               7     Change the case of the URL

                               8     Use Windows directory separator (\)

                               A     Use a carriage return (0x0d) as a request spacer

                               B     Use binary value 0x0b as a request space

-Format+           Save file (-o) format:

                               csv   Comma-separated-value

                               htm   HTML Format

                               nbe   Nessus NBE format

                               sql   Generic SQL (see docs for schema)

                               txt   Plain text

                               xml   XML Format

                               (if not specified the format will be taken from the file extension passed to -output)

-Help                    Extended help information

-host+                  Target host

-404code           Ignore these HTTP codes as negative responses (always). Format is "302,301".

-404string           Ignore this string in response body content as negative response (always). Can be a regular expression.

-id+                       Host authentication to use, format is id:pass or id:pass:realm

-key+                    Client certificate key file

-list-plugins        List all available plugins, perform no testing

-maxtime+          Maximum testing time per host (e.g., 1h, 60m, 3600s)

-mutate+           Guess additional file names:

                               1     Test all files with all root directories

                               2     Guess for password file names

                               3     Enumerate user names via Apache (/~user type requests)

                               4     Enumerate user names via cgiwrap (/cgi-bin/cgiwrap/~user type requests)

  5     Attempt to brute force sub-domain names, assume that the host name is the     parent domain

                               6     Attempt to guess directory names from the supplied dictionary file


Provide information for mutates

-nointeractive    Disables interactive features

-nolookup          Disables DNS lookups

-nossl                   Disables the use of SSL

-no404                Disables nikto attempting to guess a 404 page

-Option               Over-ride an option in nikto.conf, can be issued multiple times

-output+             Write output to this file ('.' for auto-name)

-Pause+               Pause between tests (seconds, integer or float)

-Plugins+             List of plugins to run (default: ALL)

 -port+                 Port to use (default 80)

 -RSAcert+          Client certificate file

 -root+                 Prepend root value to all requests, format is /directory

 -Save                   Save positive responses to this directory ('.' for auto-name)

 -ssl                       Force ssl mode on port

 -Tuning+           Scan tuning:

                               1     Interesting File / Seen in logs

                               2     Misconfiguration / Default File

                               3     Information Disclosure

                               4     Injection (XSS/Script/HTML)

                               5     Remote File Retrieval - Inside Web Root

                               6     Denial of Service

                               7     Remote File Retrieval - Server Wide

                               8     Command Execution / Remote Shell

                               9     SQL Injection

                               0     File Upload

                               a     Authentication Bypass

                               b     Software Identification

                               c     Remote Source Inclusion

                               d     WebService

                               e     Administrative Console

                               x     Reverse Tuning Options (i.e., include all except specified)

-timeout+          Timeout for requests (default 10 seconds)

-Userdbs           Load only user databases, not the standard databases

                               all   Disable standard dbs and load only user dbs

                               tests Disable only db_tests and load udb_tests

-useragent         Over-rides the default useragent

-until                    Run until the specified time or duration

-update               Update databases and plugins from CIRT.net

-useproxy          Use the proxy defined in nikto.conf, or argument http://server:port

-Version              Print plugin and database versions

-vhost+                Virtual host (for Host header)

+ requires a value