NAME

       sslscan - Fast SSL/TLS scanner

SYNOPSIS

       sslscan [options] [host:port | host]

DESCRIPTION

       sslscan  queries  SSL/TLS  services (such as HTTPS) and reports the protocol versions, cipher suites, key
       exchanges, signature algorithms,  and  certificates  in  use.   This  helps  the  user  understand  which
       parameters are weak from a security standpoint.

       Terminal output is thus colour-coded as follows:

       Red Background  NULL cipher (no encryption)
       Red             Broken cipher (<= 40 bit), broken protocol (SSLv2 or SSLv3) or broken certificate signing
       algorithm (MD5)
       Yellow          Weak cipher (<= 56 bit or RC4) or weak certificate signing algorithm (SHA-1)
       Purple          Anonymous cipher (ADH or AECDH)

       sslscan can also output results into an XML file for easy consumption by external programs.

OPTIONS

       --help
              Show summary of options

       --targets=<file>
              A file containing a list of hosts to check. Hosts can be supplied with ports (i.e. host:port). One
              target per line

       --sni-name=<name>
              Use a different hostname for SNI

       --ipv4, -4
              Force IPv4 DNS resolution.  Default is to try IPv4, and if that fails then fall back to IPv6.

       --ipv6, -6
              Force IPv6 DNS resolution.  Default is to try IPv4, and if that fails then fall back to IPv6.

       --show-certificate
              Display certificate information.

       --no-check-certificate
              Don't flag certificates signed with weak algorithms (MD5 and SHA-1) or short (<2048 bit) RSA keys

       --show-client-cas
              Show  a  list  of  CAs  that  the  server  allows  for  client  authentication.  Will be blank for
              IIS/Schannel servers.

       --show-ciphers
              Show a complete list of ciphers supported by sslscan

       --show-cipher-ids
              Print the hexadecimal cipher IDs

       --show-times
              Show the time taken for each handshake in milliseconds. Note that only a single  request  is  made
              with each cipher, and that the size of the ClientHello is not constant, so this should not be used
              for proper benchmarking or performance testing.

              You might want to also use --no-cipher-details to make the output a bit clearer.

       --ssl2
              Only check if SSLv2 is enabled

       --ssl3
              Only check if SSLv3 is enabled

       --tls10
              Only check TLS 1.0 ciphers

       --tls11
              Only check TLS 1.1 ciphers

       --tls12
              Only check TLS 1.2 ciphers

       --tls13
              Only check TLS 1.3 ciphers

       --tlsall
              Only check TLS ciphers (versions 1.0, 1.1, 1.2, and 1.3)

       --ocsp
              Display OCSP status

       --pk=<file>
              A file containing the private key or a PKCS#12 file containing a private key/certificate pair  (as
              produced by MSIE and Netscape)

       --pkpass=<password>
              The password for the private key or PKCS#12 file

       --certs=<file>
              A file containing PEM/ASN1 formatted client certificates

       --no-ciphersuites
              Do not scan for supported ciphersuites.

       --no-fallback
              Do not check for TLS Fallback Signaling Cipher Suite Value (fallback)

       --no-renegotiation
              Do not check for secure TLS renegotiation

       --no-compression
              Do not check for TLS compression (CRIME)

       --no-heartbleed
              Do not check for OpenSSL Heartbleed (CVE-2014-0160)

       --no-groups
              Do not enumerate key exchange groups

       --show-sigs
              Enumerate signature algorithms

       --starttls-ftp
              STARTTLS setup for FTP

       --starttls-imap
              STARTTLS setup for IMAP

       --starttls-irc
              STARTTLS setup for IRC

       --starttls-ldap
              STARTTLS setup for LDAP

       --starttls-pop3
              STARTTLS setup for POP3

       --starttls-smtp
              STARTTLS setup for SMTP

       --starttls-mysql
              STARTTLS setup for MySQL

       --starttls-xmpp
              STARTTLS setup for XMPP

       --starttls-psql
              STARTTLS setup for PostgreSQL

       --xmpp-server
              Perform a server-to-server XMPP connection. Try this if --starttls-xmpp is failing.

       --rdp
              Send RDP preamble before starting scan.

       --bugs
              Enables workarounds for SSL bugs

       --timeout=<sec>
              Set  socket  timeout.  Useful  for  hosts  that  fail to respond to ciphers they don't understand.
              Default is 3s.

       --sleep=<msec>
              Pause between connections. Useful on STARTTLS SMTP services, or anything  else  that's  performing
              rate limiting. Default is disabled.

       --xml=<file>
              Output results to an XML file. - can be used to mean stdout.

       --version
              Show version of program

       --verbose
              Display verbose output

       --no-cipher-details
              Hide NIST EC curve name and EDH/RSA key length.

       --no-colour
              Disable coloured output.

EXAMPLES

       Scan a local HTTPS server
              sslscan localhost
              sslscan 127.0.0.1
              sslscan 127.0.0.1:443
              sslscan [::1]
              sslscan [::1]:443

AUTHOR

       sslscan was originally written by Ian Ventura-Whiting <fizz@titania.co.uk>.
       sslscan was extended by Jacob Appelbaum <jacob@appelbaum.net>.
       sslscan was extended by rbsec <robin@rbsec.net>.
       This manual page was originally written by Marvin Stark <marv@der-marv.de>.

                                                 March 19, 2020                                       SSLSCAN(1)