NAME

       check_ssl_cert - checks the validity of X.509 certificates

SYNOPSIS

       check_ssl_cert -H host [OPTIONS]

DESCRIPTION

       check_ssl_cert A Nagios plugin to check an X.509 certificate:
        - checks if the server is running and delivers a valid certificate
        - checks if the CA matches a given pattern
        - checks the validity

ARGUMENTS

       -H,--host host
              server

OPTIONS

       -A,--noauth
              ignore authority warnings (expiration only)

          --altnames
              matches the pattern specified in -n with alternate names too

       -C,--clientcert path
              use client certificate to authenticate

          --clientpass phrase
              set passphrase for client certificate.

       -c,--critical days
              minimum number of days a certificate has to be valid to issue a critical status

       -d,--debug
              produces debugging output

          --ecdsa
              cipher selection: force ECDSA authentication

       -e,--email address
              pattern to match the email address contained in the certificate

       -f,--file file
              local file path (works with -H localhost only)

          --file-bin path
              path of the file binary to be used"

       -h,--help,-?
              this help message

          --ignore-exp
              ignore expiration date

          --ignore-sig-alg
              do not check if the certificate was signed with SHA1 or MD5

          --ignore-ocsp
              do not check revocation with OCSP

       -i,--issuer issuer
              pattern to match the issuer of the certificate

       -L,--check-ssl-labs grade
              SSL Labs assestment (please check https://www.ssllabs.com/about/terms.html)

          --ignore-ssl-labs-cache
              Forces a new check by SSL Labs (see -L)

          --long-output list
              append  the  specified comma separated (no spaces) list of attributes to the plugin
              output on additional lines.  Valid attributes  are:  enddate,  startdate,  subject,
              issuer,  modulus, serial, hash, email, ocsp_uri and fingerprint. 'all' will include
              all the available attributes.

       -n,---cn name
              pattern to match the CN of the certificate (can be specified multiple times)

          --no_ssl2
              disable SSL version 2

          --no_ssl3
              disable SSL version 3

          --no_tls1
              disable TLS version 1

          --no_tls1_1
              disable TLS version 1.1

          --no_tls1_2
              disable TLS version 1.2

       -N,--host-cn
              match CN with the host name

       -o,--org org
              pattern to match the organization of the certificate

          --openssl path
              path of the openssl binary to be used

       -p,--port port
              TCP port

       -P,--protocol protocol
              use the specific protocol: http (default), irc  or  smtp,pop3,imap,ftp  (switch  to
              TLS)

       -s,--selfsigned
              allows self-signed certificates

          --serial serialnum
              pattern to match the serial number

          --ssl2
              force SSL version 2

          --ssl3
              force SSL version 3

       -r,--rootcert cert
              root  certificate  or  directory  to  be  used for certficate validation (passed to
              openssl's -CAfile or -CApath)

          --rsa
              cipher selection: force RSA authentication

       -t,--timeout
              seconds timeout after the specified time (defaults to 15 seconds)

          --temp dir
              directory where to store the temporary files

          --tls1
              force TLS version 1

       -v,--verbose
              verbose output

       -V,--version
              version

       -w,--warning days
              minimum number of days a certificate has to be valid to issue a warning status

DEPRECATED OPTIONS

       -d,--days days
              minimum number of days a certificate has to be valid (see --critical and --warning)

          --ocsp
              check revocation via OCSP

       -S,--ssl version
              force SSL version (2,3) (see: --ss2 or --ssl3)

MULTIPLE CERTIFICATES

       If the host has multiple certificates and  the  installed  openssl  version  supports  the
       -servername  option  it is possible to specify the TLS SNI (Server Name Idetificator) with
       the -N (or --host-cn) option.

SEE ALSO

       x509(1), openssl(1), expect(1), timeout(1)

EXIT STATUS

       check_ssl_cert returns a zero exist status if it finds no errors, 1 for warnings, 2 for  a
       critical errors and 3 for unknown problems

BUGS

       Please report bugs to: Matteo Corti (matteo (at) corti.li )

AUTHOR

       Matteo  Corti  (matteo  (at)  corti.li  )  See  the  AUTHORS file for the complete list of
       contributors