SSL Report: changingclimates.colostate.edu (129.82.48.61)
Assessed on:  Tue, 04 Nov 2025 17:41:05 UTC | Clear cache
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Summary
Overall Rating
A
0
20
40
60
80
100
Certificate
 
Protocol Support
 
Key Exchange
 
Cipher Strength
 

Visit our documentation page for more information, configuration guides, and books. Known issues are documented here.
This server supports TLS 1.3.  MORE INFO »
HTTP Strict Transport Security (HSTS) with long duration deployed on this server.  MORE INFO »
Certificate #1: RSA 2048 bits (SHA384withRSA)
Server Key and Certificate #1
Subject hogback.atmos.colostate.edu
Fingerprint SHA256: 02a81d0e764a4fe47653b8ca2cb47df2d2a5b1a20467adba60db82bd30aae1f8
Pin SHA256: wvVqmEypfBO3VKqTW+OBvdOeXRf1wiBPm5IdsQ7PQXc=
Common names hogback.atmos.colostate.edu
Alternative names hogback.atmos.colostate.edu changingclimates.colostate.edu esmei.colostate.edu
Serial Number 00a7684e0d582f7f1805724eebad98c681
Valid from Tue, 25 Feb 2025 00:00:00 UTC
Valid until Wed, 25 Feb 2026 23:59:59 UTC (expires in 3 months and 21 days)
Key RSA 2048 bits (e 65537)
Weak key (Debian) No
Issuer InCommon RSA Server CA 2
AIA: http://crt.sectigo.com/InCommonRSAServerCA2.crt
Signature algorithm SHA384withRSA
Extended Validation No
Certificate Transparency Yes (certificate)
OCSP Must Staple No
Revocation information CRL, OCSP
CRL: http://crl.sectigo.com/InCommonRSAServerCA2.crl
OCSP: http://ocsp.sectigo.com
Revocation status Good (not revoked)
CRL ERROR: IOException occurred
DNS CAA No (more info)
Trusted Yes
Mozilla  Apple  Android  Java  Windows 


Additional Certificates (if supplied)
Certificates provided 5 (7749 bytes)
Chain issues Incorrect order, Extra certs, Contains anchor
#2
Subject AAA Certificate Services   In trust store
Fingerprint SHA256: d7a7a0fb5d7e2731d771e9484ebcdef71d5f0c3e0a2948782bc83ee0ea699ef4
Pin SHA256: vRU+17BDT2iGsXvOi76E7TQMcTLXAqj0+jGPdW7L1vM=
Valid until Sun, 31 Dec 2028 23:59:59 UTC (expires in 3 years and 1 month)
Key RSA 2048 bits (e 65537)
Issuer AAA Certificate Services   Self-signed
Signature algorithm SHA1withRSA   Weak, but no impact on root certificate
#3
Subject USERTrust RSA Certification Authority
Fingerprint SHA256: 68b9c761219a5b1f0131784474665db61bbdb109e00f05ca9f74244ee5f5f52b
Pin SHA256: x4QzPSC810K5/cMjb05Qm4k3Bw5zBn4lTdO/nEW/Td4=
Valid until Sun, 31 Dec 2028 23:59:59 UTC (expires in 3 years and 1 month)
Key RSA 4096 bits (e 65537)
Issuer AAA Certificate Services
Signature algorithm SHA384withRSA
#4
Subject InCommon RSA Server CA 2
Fingerprint SHA256: 87e01cc4dd0c9d92a3dbd49092ff13f9cd387445cdc57e5b984e1b7721b5b029
Pin SHA256: nIUvrOVzCyKOqY+U4sofEeIMk94Dt/WuMgaesi8NITk=
Valid until Mon, 15 Nov 2032 23:59:59 UTC (expires in 7 years)
Key RSA 3072 bits (e 65537)
Issuer USERTrust RSA Certification Authority
Signature algorithm SHA384withRSA
#5
Subject hogback.atmos.colostate.edu
Fingerprint SHA256: 02a81d0e764a4fe47653b8ca2cb47df2d2a5b1a20467adba60db82bd30aae1f8
Pin SHA256: wvVqmEypfBO3VKqTW+OBvdOeXRf1wiBPm5IdsQ7PQXc=
Valid until Wed, 25 Feb 2026 23:59:59 UTC (expires in 3 months and 21 days)
Key RSA 2048 bits (e 65537)
Issuer InCommon RSA Server CA 2
Signature algorithm SHA384withRSA


Certification Paths
Path #1: Trusted
1 Sent by server hogback.atmos.colostate.edu
Fingerprint SHA256: 02a81d0e764a4fe47653b8ca2cb47df2d2a5b1a20467adba60db82bd30aae1f8
Pin SHA256: wvVqmEypfBO3VKqTW+OBvdOeXRf1wiBPm5IdsQ7PQXc=
RSA 2048 bits (e 65537) / SHA384withRSA
CRL ERROR: IOException occurred
2 Sent by server InCommon RSA Server CA 2
Fingerprint SHA256: 87e01cc4dd0c9d92a3dbd49092ff13f9cd387445cdc57e5b984e1b7721b5b029
Pin SHA256: nIUvrOVzCyKOqY+U4sofEeIMk94Dt/WuMgaesi8NITk=
RSA 3072 bits (e 65537) / SHA384withRSA
CRL ERROR: IOException occurred
3 In trust store USERTrust RSA Certification Authority   Self-signed
Fingerprint SHA256: e793c9b02fd8aa13e21c31228accb08119643b749c898964b1746d46c3d4cbd2
Pin SHA256: x4QzPSC810K5/cMjb05Qm4k3Bw5zBn4lTdO/nEW/Td4=
RSA 4096 bits (e 65537) / SHA384withRSA
Path #2: Trusted
1 Sent by server hogback.atmos.colostate.edu
Fingerprint SHA256: 02a81d0e764a4fe47653b8ca2cb47df2d2a5b1a20467adba60db82bd30aae1f8
Pin SHA256: wvVqmEypfBO3VKqTW+OBvdOeXRf1wiBPm5IdsQ7PQXc=
RSA 2048 bits (e 65537) / SHA384withRSA
CRL ERROR: IOException occurred
2 Sent by server InCommon RSA Server CA 2
Fingerprint SHA256: 87e01cc4dd0c9d92a3dbd49092ff13f9cd387445cdc57e5b984e1b7721b5b029
Pin SHA256: nIUvrOVzCyKOqY+U4sofEeIMk94Dt/WuMgaesi8NITk=
RSA 3072 bits (e 65537) / SHA384withRSA
CRL ERROR: IOException occurred
3 Sent by server USERTrust RSA Certification Authority
Fingerprint SHA256: 68b9c761219a5b1f0131784474665db61bbdb109e00f05ca9f74244ee5f5f52b
Pin SHA256: x4QzPSC810K5/cMjb05Qm4k3Bw5zBn4lTdO/nEW/Td4=
RSA 4096 bits (e 65537) / SHA384withRSA
CRL ERROR: IOException occurred
4 Sent by server
In trust store 		AAA Certificate Services   Self-signed
Fingerprint SHA256: d7a7a0fb5d7e2731d771e9484ebcdef71d5f0c3e0a2948782bc83ee0ea699ef4
Pin SHA256: vRU+17BDT2iGsXvOi76E7TQMcTLXAqj0+jGPdW7L1vM=
RSA 2048 bits (e 65537) / SHA1withRSA
Weak or insecure signature, but no impact on root certificate
Path #1: Trusted
1 Sent by server hogback.atmos.colostate.edu
Fingerprint SHA256: 02a81d0e764a4fe47653b8ca2cb47df2d2a5b1a20467adba60db82bd30aae1f8
Pin SHA256: wvVqmEypfBO3VKqTW+OBvdOeXRf1wiBPm5IdsQ7PQXc=
RSA 2048 bits (e 65537) / SHA384withRSA
CRL ERROR: IOException occurred
2 Sent by server InCommon RSA Server CA 2
Fingerprint SHA256: 87e01cc4dd0c9d92a3dbd49092ff13f9cd387445cdc57e5b984e1b7721b5b029
Pin SHA256: nIUvrOVzCyKOqY+U4sofEeIMk94Dt/WuMgaesi8NITk=
RSA 3072 bits (e 65537) / SHA384withRSA
CRL ERROR: IOException occurred
3 In trust store USERTrust RSA Certification Authority   Self-signed
Fingerprint SHA256: e793c9b02fd8aa13e21c31228accb08119643b749c898964b1746d46c3d4cbd2
Pin SHA256: x4QzPSC810K5/cMjb05Qm4k3Bw5zBn4lTdO/nEW/Td4=
RSA 4096 bits (e 65537) / SHA384withRSA
Path #2: Trusted
1 Sent by server hogback.atmos.colostate.edu
Fingerprint SHA256: 02a81d0e764a4fe47653b8ca2cb47df2d2a5b1a20467adba60db82bd30aae1f8
Pin SHA256: wvVqmEypfBO3VKqTW+OBvdOeXRf1wiBPm5IdsQ7PQXc=
RSA 2048 bits (e 65537) / SHA384withRSA
CRL ERROR: IOException occurred
2 Sent by server InCommon RSA Server CA 2
Fingerprint SHA256: 87e01cc4dd0c9d92a3dbd49092ff13f9cd387445cdc57e5b984e1b7721b5b029
Pin SHA256: nIUvrOVzCyKOqY+U4sofEeIMk94Dt/WuMgaesi8NITk=
RSA 3072 bits (e 65537) / SHA384withRSA
CRL ERROR: IOException occurred
3 Sent by server USERTrust RSA Certification Authority
Fingerprint SHA256: 68b9c761219a5b1f0131784474665db61bbdb109e00f05ca9f74244ee5f5f52b
Pin SHA256: x4QzPSC810K5/cMjb05Qm4k3Bw5zBn4lTdO/nEW/Td4=
RSA 4096 bits (e 65537) / SHA384withRSA
CRL ERROR: IOException occurred
4 Sent by server
In trust store 		AAA Certificate Services   Self-signed
Fingerprint SHA256: d7a7a0fb5d7e2731d771e9484ebcdef71d5f0c3e0a2948782bc83ee0ea699ef4
Pin SHA256: vRU+17BDT2iGsXvOi76E7TQMcTLXAqj0+jGPdW7L1vM=
RSA 2048 bits (e 65537) / SHA1withRSA
Weak or insecure signature, but no impact on root certificate
Path #1: Trusted
1 Sent by server hogback.atmos.colostate.edu
Fingerprint SHA256: 02a81d0e764a4fe47653b8ca2cb47df2d2a5b1a20467adba60db82bd30aae1f8
Pin SHA256: wvVqmEypfBO3VKqTW+OBvdOeXRf1wiBPm5IdsQ7PQXc=
RSA 2048 bits (e 65537) / SHA384withRSA
CRL ERROR: IOException occurred
2 Sent by server InCommon RSA Server CA 2
Fingerprint SHA256: 87e01cc4dd0c9d92a3dbd49092ff13f9cd387445cdc57e5b984e1b7721b5b029
Pin SHA256: nIUvrOVzCyKOqY+U4sofEeIMk94Dt/WuMgaesi8NITk=
RSA 3072 bits (e 65537) / SHA384withRSA
CRL ERROR: IOException occurred
3 In trust store USERTrust RSA Certification Authority   Self-signed
Fingerprint SHA256: e793c9b02fd8aa13e21c31228accb08119643b749c898964b1746d46c3d4cbd2
Pin SHA256: x4QzPSC810K5/cMjb05Qm4k3Bw5zBn4lTdO/nEW/Td4=
RSA 4096 bits (e 65537) / SHA384withRSA
Path #2: Trusted
1 Sent by server hogback.atmos.colostate.edu
Fingerprint SHA256: 02a81d0e764a4fe47653b8ca2cb47df2d2a5b1a20467adba60db82bd30aae1f8
Pin SHA256: wvVqmEypfBO3VKqTW+OBvdOeXRf1wiBPm5IdsQ7PQXc=
RSA 2048 bits (e 65537) / SHA384withRSA
CRL ERROR: IOException occurred
2 Sent by server InCommon RSA Server CA 2
Fingerprint SHA256: 87e01cc4dd0c9d92a3dbd49092ff13f9cd387445cdc57e5b984e1b7721b5b029
Pin SHA256: nIUvrOVzCyKOqY+U4sofEeIMk94Dt/WuMgaesi8NITk=
RSA 3072 bits (e 65537) / SHA384withRSA
CRL ERROR: IOException occurred
3 Sent by server USERTrust RSA Certification Authority
Fingerprint SHA256: 68b9c761219a5b1f0131784474665db61bbdb109e00f05ca9f74244ee5f5f52b
Pin SHA256: x4QzPSC810K5/cMjb05Qm4k3Bw5zBn4lTdO/nEW/Td4=
RSA 4096 bits (e 65537) / SHA384withRSA
CRL ERROR: IOException occurred
4 Sent by server
In trust store 		AAA Certificate Services   Self-signed
Fingerprint SHA256: d7a7a0fb5d7e2731d771e9484ebcdef71d5f0c3e0a2948782bc83ee0ea699ef4
Pin SHA256: vRU+17BDT2iGsXvOi76E7TQMcTLXAqj0+jGPdW7L1vM=
RSA 2048 bits (e 65537) / SHA1withRSA
Weak or insecure signature, but no impact on root certificate
Path #1: Trusted
1 Sent by server hogback.atmos.colostate.edu
Fingerprint SHA256: 02a81d0e764a4fe47653b8ca2cb47df2d2a5b1a20467adba60db82bd30aae1f8
Pin SHA256: wvVqmEypfBO3VKqTW+OBvdOeXRf1wiBPm5IdsQ7PQXc=
RSA 2048 bits (e 65537) / SHA384withRSA
CRL ERROR: IOException occurred
2 Sent by server InCommon RSA Server CA 2
Fingerprint SHA256: 87e01cc4dd0c9d92a3dbd49092ff13f9cd387445cdc57e5b984e1b7721b5b029
Pin SHA256: nIUvrOVzCyKOqY+U4sofEeIMk94Dt/WuMgaesi8NITk=
RSA 3072 bits (e 65537) / SHA384withRSA
CRL ERROR: IOException occurred
3 In trust store USERTrust RSA Certification Authority   Self-signed
Fingerprint SHA256: e793c9b02fd8aa13e21c31228accb08119643b749c898964b1746d46c3d4cbd2
Pin SHA256: x4QzPSC810K5/cMjb05Qm4k3Bw5zBn4lTdO/nEW/Td4=
RSA 4096 bits (e 65537) / SHA384withRSA
Path #2: Trusted
1 Sent by server hogback.atmos.colostate.edu
Fingerprint SHA256: 02a81d0e764a4fe47653b8ca2cb47df2d2a5b1a20467adba60db82bd30aae1f8
Pin SHA256: wvVqmEypfBO3VKqTW+OBvdOeXRf1wiBPm5IdsQ7PQXc=
RSA 2048 bits (e 65537) / SHA384withRSA
CRL ERROR: IOException occurred
2 Sent by server InCommon RSA Server CA 2
Fingerprint SHA256: 87e01cc4dd0c9d92a3dbd49092ff13f9cd387445cdc57e5b984e1b7721b5b029
Pin SHA256: nIUvrOVzCyKOqY+U4sofEeIMk94Dt/WuMgaesi8NITk=
RSA 3072 bits (e 65537) / SHA384withRSA
CRL ERROR: IOException occurred
3 Sent by server USERTrust RSA Certification Authority
Fingerprint SHA256: 68b9c761219a5b1f0131784474665db61bbdb109e00f05ca9f74244ee5f5f52b
Pin SHA256: x4QzPSC810K5/cMjb05Qm4k3Bw5zBn4lTdO/nEW/Td4=
RSA 4096 bits (e 65537) / SHA384withRSA
CRL ERROR: IOException occurred
4 Sent by server
In trust store 		AAA Certificate Services   Self-signed
Fingerprint SHA256: d7a7a0fb5d7e2731d771e9484ebcdef71d5f0c3e0a2948782bc83ee0ea699ef4
Pin SHA256: vRU+17BDT2iGsXvOi76E7TQMcTLXAqj0+jGPdW7L1vM=
RSA 2048 bits (e 65537) / SHA1withRSA
Weak or insecure signature, but no impact on root certificate
Path #1: Trusted
1 Sent by server hogback.atmos.colostate.edu
Fingerprint SHA256: 02a81d0e764a4fe47653b8ca2cb47df2d2a5b1a20467adba60db82bd30aae1f8
Pin SHA256: wvVqmEypfBO3VKqTW+OBvdOeXRf1wiBPm5IdsQ7PQXc=
RSA 2048 bits (e 65537) / SHA384withRSA
CRL ERROR: IOException occurred
2 Sent by server InCommon RSA Server CA 2
Fingerprint SHA256: 87e01cc4dd0c9d92a3dbd49092ff13f9cd387445cdc57e5b984e1b7721b5b029
Pin SHA256: nIUvrOVzCyKOqY+U4sofEeIMk94Dt/WuMgaesi8NITk=
RSA 3072 bits (e 65537) / SHA384withRSA
CRL ERROR: IOException occurred
3 In trust store USERTrust RSA Certification Authority   Self-signed
Fingerprint SHA256: e793c9b02fd8aa13e21c31228accb08119643b749c898964b1746d46c3d4cbd2
Pin SHA256: x4QzPSC810K5/cMjb05Qm4k3Bw5zBn4lTdO/nEW/Td4=
RSA 4096 bits (e 65537) / SHA384withRSA
Path #2: Trusted
1 Sent by server hogback.atmos.colostate.edu
Fingerprint SHA256: 02a81d0e764a4fe47653b8ca2cb47df2d2a5b1a20467adba60db82bd30aae1f8
Pin SHA256: wvVqmEypfBO3VKqTW+OBvdOeXRf1wiBPm5IdsQ7PQXc=
RSA 2048 bits (e 65537) / SHA384withRSA
CRL ERROR: IOException occurred
2 Sent by server InCommon RSA Server CA 2
Fingerprint SHA256: 87e01cc4dd0c9d92a3dbd49092ff13f9cd387445cdc57e5b984e1b7721b5b029
Pin SHA256: nIUvrOVzCyKOqY+U4sofEeIMk94Dt/WuMgaesi8NITk=
RSA 3072 bits (e 65537) / SHA384withRSA
CRL ERROR: IOException occurred
3 Sent by server USERTrust RSA Certification Authority
Fingerprint SHA256: 68b9c761219a5b1f0131784474665db61bbdb109e00f05ca9f74244ee5f5f52b
Pin SHA256: x4QzPSC810K5/cMjb05Qm4k3Bw5zBn4lTdO/nEW/Td4=
RSA 4096 bits (e 65537) / SHA384withRSA
CRL ERROR: IOException occurred
4 Sent by server
In trust store 		AAA Certificate Services   Self-signed
Fingerprint SHA256: d7a7a0fb5d7e2731d771e9484ebcdef71d5f0c3e0a2948782bc83ee0ea699ef4
Pin SHA256: vRU+17BDT2iGsXvOi76E7TQMcTLXAqj0+jGPdW7L1vM=
RSA 2048 bits (e 65537) / SHA1withRSA
Weak or insecure signature, but no impact on root certificate

Click here to expand

Configuration
Protocols
TLS 1.3 Yes
TLS 1.2 No
TLS 1.1 No
TLS 1.0 No
SSL 3 No
SSL 2 No


Cipher Suites
# TLS 1.3 (server has no preference)
TLS_AES_128_GCM_SHA256 (0x1301)   ECDH x25519 (eq. 3072 bits RSA)   FS 128
TLS_AES_256_GCM_SHA384 (0x1302)   ECDH x25519 (eq. 3072 bits RSA)   FS 256
TLS_CHACHA20_POLY1305_SHA256 (0x1303)   ECDH x25519 (eq. 3072 bits RSA)   FS 256


Handshake Simulation
Android 8.1 -   TLS 1.3 TLS_CHACHA20_POLY1305_SHA256   ECDH x25519  FS
Android 9.0 -   TLS 1.3 TLS_CHACHA20_POLY1305_SHA256   ECDH x25519  FS
Chrome 69 / Win 7  R Server sent fatal alert: protocol_version
Chrome 70 / Win 10 -   TLS 1.3 TLS_AES_128_GCM_SHA256   ECDH x25519  FS
Chrome 80 / Win 10  R -   TLS 1.3 TLS_AES_128_GCM_SHA256   ECDH x25519  FS
Firefox 62 / Win 7  R Server sent fatal alert: protocol_version
Firefox 73 / Win 10  R -   TLS 1.3 TLS_AES_128_GCM_SHA256   ECDH x25519  FS
Java 11.0.3 -   TLS 1.3 TLS_AES_128_GCM_SHA256   ECDH secp256r1  FS
Java 12.0.1 -   TLS 1.3 TLS_AES_128_GCM_SHA256   ECDH secp256r1  FS
OpenSSL 1.1.0k  R Server sent fatal alert: protocol_version
OpenSSL 1.1.1c  R -   TLS 1.3 TLS_AES_256_GCM_SHA384   ECDH x25519  FS
Safari 12.1.2 / MacOS 10.14.6 Beta  R -   TLS 1.3 TLS_CHACHA20_POLY1305_SHA256   ECDH x25519  FS
Safari 12.1.1 / iOS 12.3.1  R -   TLS 1.3 TLS_CHACHA20_POLY1305_SHA256   ECDH x25519  FS
# Not simulated clients (Protocol mismatch)
Android 2.3.7   No SNI 2 Protocol mismatch (not simulated)
Android 4.0.4 Protocol mismatch (not simulated)
Android 4.1.1 Protocol mismatch (not simulated)
Android 4.2.2 Protocol mismatch (not simulated)
Android 4.3 Protocol mismatch (not simulated)
Android 4.4.2 Protocol mismatch (not simulated)
Android 5.0.0 Protocol mismatch (not simulated)
Android 6.0 Protocol mismatch (not simulated)
Android 7.0 Protocol mismatch (not simulated)
Android 8.0 Protocol mismatch (not simulated)
Baidu Jan 2015 Protocol mismatch (not simulated)
BingPreview Jan 2015 Protocol mismatch (not simulated)
Chrome 49 / XP SP3 Protocol mismatch (not simulated)
Firefox 31.3.0 ESR / Win 7 Protocol mismatch (not simulated)
Firefox 47 / Win 7  R Protocol mismatch (not simulated)
Firefox 49 / XP SP3 Protocol mismatch (not simulated)
Googlebot Feb 2018 Protocol mismatch (not simulated)
IE 6 / XP   No FS 1   No SNI 2 Protocol mismatch (not simulated)
IE 7 / Vista Protocol mismatch (not simulated)
IE 8 / XP   No FS 1   No SNI 2 Protocol mismatch (not simulated)
IE 8-10 / Win 7  R Protocol mismatch (not simulated)
IE 11 / Win 7  R Protocol mismatch (not simulated)
IE 11 / Win 8.1  R Protocol mismatch (not simulated)
IE 10 / Win Phone 8.0 Protocol mismatch (not simulated)
IE 11 / Win Phone 8.1  R Protocol mismatch (not simulated)
IE 11 / Win Phone 8.1 Update  R Protocol mismatch (not simulated)
IE 11 / Win 10  R Protocol mismatch (not simulated)
Edge 15 / Win 10  R Protocol mismatch (not simulated)
Edge 16 / Win 10  R Protocol mismatch (not simulated)
Edge 18 / Win 10  R Protocol mismatch (not simulated)
Edge 13 / Win Phone 10  R Protocol mismatch (not simulated)
Java 6u45   No SNI 2 Protocol mismatch (not simulated)
Java 7u25 Protocol mismatch (not simulated)
Java 8u161 Protocol mismatch (not simulated)
OpenSSL 0.9.8y Protocol mismatch (not simulated)
OpenSSL 1.0.1l  R Protocol mismatch (not simulated)
OpenSSL 1.0.2s  R Protocol mismatch (not simulated)
Safari 5.1.9 / OS X 10.6.8 Protocol mismatch (not simulated)
Safari 6 / iOS 6.0.1 Protocol mismatch (not simulated)
Safari 6.0.4 / OS X 10.8.4  R Protocol mismatch (not simulated)
Safari 7 / iOS 7.1  R Protocol mismatch (not simulated)
Safari 7 / OS X 10.9  R Protocol mismatch (not simulated)
Safari 8 / iOS 8.4  R Protocol mismatch (not simulated)
Safari 8 / OS X 10.10  R Protocol mismatch (not simulated)
Safari 9 / iOS 9  R Protocol mismatch (not simulated)
Safari 9 / OS X 10.11  R Protocol mismatch (not simulated)
Safari 10 / iOS 10  R Protocol mismatch (not simulated)
Safari 10 / OS X 10.12  R Protocol mismatch (not simulated)
Apple ATS 9 / iOS 9  R Protocol mismatch (not simulated)
Yahoo Slurp Jan 2015 Protocol mismatch (not simulated)
YandexBot Jan 2015 Protocol mismatch (not simulated)

Click here to expand

(1) Clients that do not support Forward Secrecy (FS) are excluded when determining support for it.
(2) No support for virtual SSL hosting (SNI). Connects to the default site if the server uses SNI.
(3) Only first connection attempt simulated. Browsers sometimes retry with a lower protocol version.
(R) Denotes a reference browser or client, with which we expect better effective security.
(All) We use defaults, but some platforms do not use their best protocols and features (e.g., Java 6 & 7, older IE).
(All) Certificate trust is not checked in handshake simulation, we only perform TLS handshake.


Protocol Details
ROBOT (vulnerability) No (more info)
Forward Secrecy Yes (with most browsers)   ROBUST (more info)
ALPN Yes   http/1.1
Session resumption (tickets) No
OCSP stapling No
Strict Transport Security (HSTS) Yes
max-age=31536000; includeSubDomains
HSTS Preloading Not in: Chrome  Edge  Firefox  IE 
Public Key Pinning (HPKP) No (more info)
Public Key Pinning Report-Only No
Public Key Pinning (Static) No (more info)
Supported Named Groups x25519, secp256r1, secp384r1, secp521r1, ffdhe2048, ffdhe3072 (server preferred order)
SSL 2 handshake compatibility No
0-RTT enabled No


HTTP Requests
1 https://changingclimates.colostate.edu/  (HTTP/1.1 200 OK)
1
Date Tue, 04 Nov 2025 17:40:57 GMT
Server Apache
Strict-Transport-Security max-age=31536000; includeSubDomains
X-Frame-Options SAMEORIGIN
Accept-Ranges bytes
Vary Accept-Encoding
X-Content-Type-Options nosniff
Content-Security-Policy default-src 'self';
Connection close
Transfer-Encoding chunked
Content-Type text/html


Miscellaneous
Test date Tue, 04 Nov 2025 17:40:51 UTC
Test duration 13.899 seconds
HTTP status code 200
HTTP server signature Apache
Server hostname hogback.atmos.ColoState.EDU


SSL Report v2.4.1