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Tools Server SSL Test

Testing Server Check Result

ctl.knu.ac.kr:443 - Summary

ctl.knu.ac.kr -> 155.230.54.116
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Certificate and Configuration

Certificate Information
signatureAlgorithmOKSHA256 with RSA
keySizeINFORSA 2048 bits
serialNumberINFO97B5F9493D9751B51735C51F9FFED7A3
commonNameOKctl.knu.ac.kr
commonName wo SNIINFOctl.knu.ac.kr
subjectAltNameINFOctl.knu.ac.kr
caIssuersINFOSectigo Public Server Authentication CA DV R36 (Sectigo Limited from GB)
trustOKOk via SAN and CN (same w/o SNI)
chain of trustOKpassed.
certificatePolicies EVINFOno
expirationStatusOK385 >= 60 days
notBeforeINFO2025-11-03 09:00
notAfterOK2026-12-04 08:59
OCSP staplingLOWnot offered
DNS CAArecordLOW--
certificate transparencyOKyes (certificate extension)
Protocols Information ctl.knu.ac.kr/155.230.54.116
SSLv2 OKnot offered
SSLv3 OKnot offered
TLS1 INFOnot offered
TLS1.1 INFOis not offered
TLS1.2 OKoffered
TLS1.3 OKoffered with final
ALPN INFOnot offered
Server Information
cipher negotiated OKTLS_AES_256_GCM_SHA384, 253 bit ECDH (X25519)
Cipher order
TLSv1.2 INFOECDHE-RSA-AES256-GCM-SHA384
Cipher Suite
Client Handshake Simulation
android 422 INFONo connection
android 442 INFOTLSv1.2 ECDHE-RSA-AES256-GCM-SHA384
android 500 INFOTLSv1.2 ECDHE-RSA-AES128-GCM-SHA256
android 60 INFOTLSv1.2 ECDHE-RSA-AES128-GCM-SHA256
android 70 INFOTLSv1.2 ECDHE-RSA-AES256-GCM-SHA384
android 81 INFOTLSv1.2 ECDHE-RSA-AES256-GCM-SHA384
android 90 INFOTLSv1.3 TLS_AES_256_GCM_SHA384
chrome 65 win7 INFOTLSv1.2 ECDHE-RSA-AES256-GCM-SHA384
chrome 74 win10 INFOTLSv1.3 TLS_AES_256_GCM_SHA384
firefox 62 win7 INFOTLSv1.2 ECDHE-RSA-AES256-GCM-SHA384
firefox 66 win81 INFOTLSv1.3 TLS_AES_256_GCM_SHA384
ie 6 xp INFONo connection
ie 7 vista INFONo connection
ie 8 win7 INFONo connection
ie 8 xp INFONo connection
ie 11 win7 INFONo connection
ie 11 win81 INFONo connection
ie 11 winphone81 INFONo connection
ie 11 win10 INFOTLSv1.2 ECDHE-RSA-AES256-GCM-SHA384
edge 15 win10 INFOTLSv1.2 ECDHE-RSA-AES256-GCM-SHA384
edge 17 win10 INFOTLSv1.2 ECDHE-RSA-AES256-GCM-SHA384
opera 60 win10 INFOTLSv1.3 TLS_AES_256_GCM_SHA384
safari 9 ios9 INFOTLSv1.2 ECDHE-RSA-AES256-GCM-SHA384
safari 9 osx1011 INFOTLSv1.2 ECDHE-RSA-AES256-GCM-SHA384
safari 10 osx1012 INFOTLSv1.2 ECDHE-RSA-AES256-GCM-SHA384
apple ats 9 ios9 INFOTLSv1.2 ECDHE-RSA-AES256-GCM-SHA384
tor 1709 win7 INFONo connection
java 6u45 INFONo connection
java 7u25 INFONo connection
java 8u161 INFOTLSv1.2 ECDHE-RSA-AES256-GCM-SHA384
java 904 INFOTLSv1.2 ECDHE-RSA-AES256-GCM-SHA384
openssl 101l INFOTLSv1.2 ECDHE-RSA-AES256-GCM-SHA384
openssl 102e INFOTLSv1.2 ECDHE-RSA-AES256-GCM-SHA384
openssl 110j INFOTLSv1.2 ECDHE-RSA-AES256-GCM-SHA384
openssl 111b INFOTLSv1.3 TLS_AES_256_GCM_SHA384
thunderbird 60 6 1 INFOTLSv1.3 TLS_AES_256_GCM_SHA384