![]() ![]() $ openssl verify -CAfile cert2.pem cert1. # Extract them into cert1.pem cert2.pem cert3.pem $ openssl s_client -connect :443 -showcerts > cert.pem Verify certificate chain: # Store all certificates ![]() $ echo -e "GET / HTTP/1.1 \r\n Host: \r\n Connection: close \r\n\r\n " | openssl s_client -quiet -connect :443 -servername Post-Handshake New Session Ticket arrived: SSL handshake has read 4642 bytes and written 380 bytes Issuer=C = US, O = Let's Encrypt, CN = R3 Y m6RPgVr/JEIKWGQtWCwtqk0TzrOUwIBIw5xU1HyA5hz7vOrzxeROSM 95nd1FHwZshNgttC8ihTFBQWijJVV6sOeyGE3JZHWBDQfjp7kbUvGxfLIi1ziWMĦry0 FcICtVMWwLbQi4HMxax2PvTdCCQZCrOaWiM1xQ/p4k1p3iY7fyTdl9Sr6yr J1eTEGSnotHXRAQeW1sjtGgSLWXrRJsLJNqzLfXw25/XJgSK/KIwuvh KI32kaYl SDTX/HJIAZ L7szjQLZKHvDZRuoCceikZmGV4aFIdyt jlEQneJVFj5QCEtjjjiI TmJMi1QSMA0GCSqGSIb3DQEBCwUAA4IBAQBTRMekA7B8D3EHvHPVFsjCePvWUX1D GfQEgfEA7wB1AEHIyrHfIkZKEMahOglCh15OMYsbA vrS8do8JBilgb2AAABf/X7ĭeIAAAQDAEYwRAIgL / 47ymSnPD786/vSsLAe9DnvdPSDhzB95iDJWRjBECIAYIĪwwP6sQhB852PAq2ImsgJC0UGrmr3BodVWjnRcMFAHYARqVV63X6kSAwtaKJafTzįREsQXS /Um4havy/HD bUcAAAF/9ft2BgAABAMARzBFAiAYmpaYKA4Rklxe7KF2ģfaQo5WQzwIQGMG/EBHsj55bWgIhAN/AyVz5PZ5x74R1otpwH ULFcbyodU2TjrV YAYDVR0RBFkwV4IMYWxhLm11cmFzLmV1ggxkb2MubXVyYXMuZXWCEG1pa29sYWouīXVyYXMuZXWCD21vbmljYS5tdXJhcy5ldYIIbXVyYXMuZXWCDHd3dy5tdXJhcy5lĭTBMBgNVHSAERTBDMAgGBmeBDAECATA3BgsrBgEEAYLfEwEBATAoMCYGCCsGAQUFīwIBFhpodHRwOi8vY3BzLmxldHNlbmNyeXB0Lm9yZzCCAQMGCisGAQQB1nkCBAIE HSUEFjAUBggrBgEFBQcDAQYIKwYBBQUHAwIwDAYDVR0TAQH/BAIwADAdBgNVHQ4EįgQUObZv 7j4EQHj5orKa2O1i0Yhd7UwHwYDVR0jBBgwFoAUFC6zF7dYVsuuUAlAĥh vnYsUwsYwVQYIKwYBBQUHAQEESTBHMCEGCCsGAQUFBzABhhVodHRwOi8vcjMuīy5sZW5jci5vcmcwIgYIKwYBBQUHMAKGFmh0dHA6Ly9yMy5pLmxlbmNyLm9yZy8w UHlho4KwK7tnjs9VSdkCAwEAAaOCAo8wggKLMA4GA1UdDwEB/wQEAwIFoDAdBgNV R4CEsuLcwvHSH6W7dN3CPjYZ5TbuYuprG圎gYSDJRN07bipy95R4BrHiKAk6R66a Mii ZznEa3R zat9bXxVxiwhFvxS bhClEUrFYI5I5zPOs7ByUstc2c6Tws1wW2y RyZsAUO5VfxHygPH93WQc4qX3ZQoaZ7 xA4QjGwR4zJw3CqdQNXXXfoW456iIHrzĮgzSf6KctnQg8VBGhnTqE0ZZN3QTHtLoRy2J/RcTl0z48SLBS60EpeOmIzjek5X1 MDIxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MQswCQYDVQQDĮwJSMzAeFw0yMjA0MDQxODA5MzFaFw0yMjA3MDMxODA5MzBaMBcxFTATBgNVBAMTĭGFsYS5tdXJhcy5ldTCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBALg4ĩWBf1tHJNysqDl6bTKj 8no8 QSV/xqxfpcgr9uIEUTYbJtHHNFHDi1QjaufaDBG ![]() In this article, we’ll review a situation where the standard syntax doesn’t return any certs even though we know certs exist. MIIFZjCCBE6gAwIBAgISAytgxCG8Nfa5gbAkMQHXSwOMMA0GCSqGSIb3DQEBCwUA Overview The OpenSSL sclient is a valuable tool when inspecting and troubleshooting SSL certificates from the command line. I:O = Digital Signature Trust Co., CN = DST Root CA X3 I:C = US, O = Internet Security Research Group, CN = ISRG Root X1Ģ s:C = US, O = Internet Security Research Group, CN = ISRG Root X1 $ echo | openssl s_client -connect :443 -servername # (truncated for visibility) -END CERTIFICATE- subject =/CN = issuer =/C =GB/ST =Greater Manchester/L =Salford/O =Sectigo Limited/CN =Sectigo RSA Domain Validation Secure Server CA - $ echo | openssl s_client -connect :443 CONNECTED (00000005 ) 4337616428:error:14004410:SSL routines:CONNECT_CR_SRVR_HELLO:sslv3 alert handshake failure:/System/Volumes/Data/SWE/macOS/BuildRoots/533514bb11/Library/Caches//Sources/libressl/libressl-75.60.3/libressl-2.8/ssl/ssl_pkt.c:1200:SSL alert number 40 4337616428:error:140040E5:SSL routines:CONNECT_CR_SRVR_HELLO:ssl handshake failure:/System/Volumes/Data/SWE/macOS/BuildRoots/533514bb11/Library/Caches//Sources/libressl/libressl-75.60.3/libressl-2.8/ssl/ssl_pkt.c:585: - no peer certificate available - No client certificate CA names sent - SSL handshake has read 7 bytes and written 0 bytes - New, (NONE ), Cipher is (NONE ) Secure Renegotiation IS NOT supported Compression: NONE Expansion: NONE No ALPN negotiated SSL-Session: Protocol : TLSv1.Display certificate information: $ ➜ openssl s_client -connect :443ĭepth=2 C = US, O = Internet Security Research Group, CN = ISRG Root X1ĭepth=1 C = US, O = Let's Encrypt, CN = R3 ![]()
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