Check gültigkeit:
openssl s_client -host ldap.server.de -port 636 2>/dev/null | openssl x509 -noout -dates
show cert + chain
openssl s_client -host ldap.server.de -port 636
show supported versions
nmap --script ssl-enum-ciphers -p 443 www.host.com
show Cert
nmap --script ssl-cert -p 25 smtp.host.com