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.

       --show-certificates
              Display the full certificate chain.

       --no-check-certificate
              --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

       --iana-names
              Use IANA/RFC cipher names rather than OpenSSL ones

       --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.

       --connect-timeout=<sec>
              Set initial connection timeout. Useful for hosts that are slow to  respond  to  the
              initial connect(). Default is 75s.

       --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)