Berikut ini adalah command line openssl untuk mengecek status ssl, tanggal expired dari ssl via command line linux.
Test FTP
openssl s_client -connect server.yourdomain.com:21 -starttls ftp
Test POP3
openssl s_client -connect server.yourdomain.com:995
Test IMAP
openssl s_client -connect server.yourdomain.com:993
Test SMTP SSL
openssl s_client -connect server.yourdomain.com:465
Test SMTP TLS
openssl s_client -connect server.yourdomain.com:587 -starttls smtp
Test HTTPS
openssl s_client -connect server.yourdomain.com:443
Test DirectAdmin
openssl s_client -connect server.yourdomain.com:2222
Percobaaan dari perintah test ssl diatas
[root@cluster-smtp-1 ~]# openssl s_client -connect smtp.mailku.net:465 CONNECTED(00000003) depth=2 O = Digital Signature Trust Co., CN = DST Root CA X3 verify return:1 depth=1 C = US, O = Let's Encrypt, CN = Let's Encrypt Authority X3 verify return:1 depth=0 CN = smtp.mailku.net verify return:1 --- Certificate chain 0 s:/CN=smtp.mailku.net i:/C=US/O=Let's Encrypt/CN=Let's Encrypt Authority X3 1 s:/C=US/O=Let's Encrypt/CN=Let's Encrypt Authority X3 i:/O=Digital Signature Trust Co./CN=DST Root CA X3 --- Server certificate -----BEGIN CERTIFICATE----- MIIFWDCCBECgAwIBAgISA/Byvq9BMA3XIkZHMELzGpzKMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0yMDAxMDgwNDQwMTlaFw0y -----END CERTIFICATE----- subject=/CN=smtp.mailku.net issuer=/C=US/O=Let's Encrypt/CN=Let's Encrypt Authority X3 --- No client certificate CA names sent Server Temp Key: ECDH, prime256v1, 256 bits --- SSL handshake has read 3061 bytes and written 373 bytes --- New, TLSv1/SSLv3, Cipher is ECDHE-RSA-AES256-GCM-SHA384 Server public key is 2048 bit Secure Renegotiation IS supported Compression: NONE Expansion: NONE SSL-Session: Protocol : TLSv1.2 Cipher : ECDHE-RSA-AES256-GCM-SHA384 Session-ID: 7A8D1AB714785A56800F894D632D77378E8799066CA64BCBF0D4CCC451E1C8A3 Session-ID-ctx: Master-Key: 5F44E3256A182FB0BEF326A795A3022A6662485739222988CB75EAA7353130FAF60767CF6754EF1D26C7BE1698C0A145 Key-Arg : None Krb5 Principal: None PSK identity: None PSK identity hint: None Start Time: 1578465882 Timeout : 300 (sec) Verify return code: 0 (ok) --- 220 cluster-smtp-1.mailku.net ESMTP Exim 4.92.2 Wed, 08 Jan 2020 13:44:42 +0700
Percobaan lagi melihat tanggal expired
openssl s_client -connect smtp.mailku.net:465 2>/dev/null | openssl x509 -noout -dates notBefore=Jan 8 04:40:19 2020 GMT notAfter=Apr 7 04:40:19 2020 GMT
Percobaan lagi
echo | openssl s_client -connect smtp.mailku.net:465 2>/dev/null | openssl x509 -noout -dates notBefore=Jan 8 04:40:19 2020 GMT notAfter=Apr 7 04:40:19 2020 GMT
Opsi
echo | openssl s_client -connect smtp.mailku.net:465 2>/dev/null | openssl x509 -noout -issuer -subject -dates
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