Man pages sections > man1 > check_ssl_cert

check_ssl_cert - checks the validity of X.509 certificates

check_ssl_cert(1) USER COMMANDS check_ssl_cert(1)

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
 
December, 2016 1.37.0