SSL Report: www.science-on-stage.de (92.205.188.109)
Assessed on:  Wed, 19 Nov 2025 11:21:40 UTC | Clear cache

Due to a recently discovered bug in Apple's code, your browser is exposed to MITM attacks. Click here for more information.

Summary
Overall Rating
A
0
20
40
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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 site works only in browsers with SNI support.
This server supports TLS 1.3.  MORE INFO »
Certificate #1: RSA 2048 bits (SHA256withRSA)
Server Key and Certificate #1
Subject science-on-stage.de
Fingerprint SHA256: b5925a8dd954403486819b45852ba759aacc91a8f566a4f82b575e858fc2c9e5
Pin SHA256: grCdh52AlmlKKBup/Awcftpb1pvB+ixFn46+kTPLfe0=
Common names science-on-stage.de
Alternative names science-on-stage.de www.science-on-stage.de
Serial Number 06834b231e34efe78952a29b70a7dfcf6be4
Valid from Fri, 14 Nov 2025 04:40:46 UTC
Valid until Thu, 12 Feb 2026 04:40:45 UTC (expires in 2 months and 23 days)
Key RSA 2048 bits (e 65537)
Weak key (Debian) No
Issuer R13
AIA: http://r13.i.lencr.org/
Signature algorithm SHA256withRSA
Extended Validation No
Certificate Transparency Yes (certificate)
OCSP Must Staple No
Revocation information CRL
CRL: http://r13.c.lencr.org/101.crl
Revocation status Validation error
CRL ERROR: IOException occurred
DNS CAA No (more info)
Trusted Yes
Mozilla  Apple  Android  Java  Windows 


Additional Certificates (if supplied)
Certificates provided 2 (2599 bytes)
Chain issues None
#2
Subject R13
Fingerprint SHA256: d3b128216a843f8ef1321501f5df52a5df52939ee2c19297712cd3de4d419354
Pin SHA256: AlSQhgtJirc8ahLyekmtX+Iw+v46yPYRLJt9Cq1GlB0=
Valid until Fri, 12 Mar 2027 23:59:59 UTC (expires in 1 year and 3 months)
Key RSA 2048 bits (e 65537)
Issuer ISRG Root X1
Signature algorithm SHA256withRSA


Certification Paths
Path #1: Trusted
1 Sent by server science-on-stage.de
Fingerprint SHA256: b5925a8dd954403486819b45852ba759aacc91a8f566a4f82b575e858fc2c9e5
Pin SHA256: grCdh52AlmlKKBup/Awcftpb1pvB+ixFn46+kTPLfe0=

RSA 2048 bits (e 65537) / SHA256withRSA
CRL ERROR: IOException occurred
2 Sent by server R13
Fingerprint SHA256: d3b128216a843f8ef1321501f5df52a5df52939ee2c19297712cd3de4d419354
Pin SHA256: AlSQhgtJirc8ahLyekmtX+Iw+v46yPYRLJt9Cq1GlB0=

RSA 2048 bits (e 65537) / SHA256withRSA
CRL ERROR: IOException occurred
3 In trust store ISRG Root X1   Self-signed
Fingerprint SHA256: 96bcec06264976f37460779acf28c5a7cfe8a3c0aae11a8ffcee05c0bddf08c6
Pin SHA256: C5+lpZ7tcVwmwQIMcRtPbsQtWLABXhQzejna0wHFr8M=

RSA 4096 bits (e 65537) / SHA256withRSA
Path #1: Trusted
1 Sent by server science-on-stage.de
Fingerprint SHA256: b5925a8dd954403486819b45852ba759aacc91a8f566a4f82b575e858fc2c9e5
Pin SHA256: grCdh52AlmlKKBup/Awcftpb1pvB+ixFn46+kTPLfe0=

RSA 2048 bits (e 65537) / SHA256withRSA
CRL ERROR: IOException occurred
2 Sent by server R13
Fingerprint SHA256: d3b128216a843f8ef1321501f5df52a5df52939ee2c19297712cd3de4d419354
Pin SHA256: AlSQhgtJirc8ahLyekmtX+Iw+v46yPYRLJt9Cq1GlB0=

RSA 2048 bits (e 65537) / SHA256withRSA
CRL ERROR: IOException occurred
3 In trust store ISRG Root X1   Self-signed
Fingerprint SHA256: 96bcec06264976f37460779acf28c5a7cfe8a3c0aae11a8ffcee05c0bddf08c6
Pin SHA256: C5+lpZ7tcVwmwQIMcRtPbsQtWLABXhQzejna0wHFr8M=

RSA 4096 bits (e 65537) / SHA256withRSA
Path #1: Trusted
1 Sent by server science-on-stage.de
Fingerprint SHA256: b5925a8dd954403486819b45852ba759aacc91a8f566a4f82b575e858fc2c9e5
Pin SHA256: grCdh52AlmlKKBup/Awcftpb1pvB+ixFn46+kTPLfe0=

RSA 2048 bits (e 65537) / SHA256withRSA
CRL ERROR: IOException occurred
2 Sent by server R13
Fingerprint SHA256: d3b128216a843f8ef1321501f5df52a5df52939ee2c19297712cd3de4d419354
Pin SHA256: AlSQhgtJirc8ahLyekmtX+Iw+v46yPYRLJt9Cq1GlB0=

RSA 2048 bits (e 65537) / SHA256withRSA
CRL ERROR: IOException occurred
3 In trust store ISRG Root X1   Self-signed
Fingerprint SHA256: 96bcec06264976f37460779acf28c5a7cfe8a3c0aae11a8ffcee05c0bddf08c6
Pin SHA256: C5+lpZ7tcVwmwQIMcRtPbsQtWLABXhQzejna0wHFr8M=

RSA 4096 bits (e 65537) / SHA256withRSA
Path #1: Trusted
1 Sent by server science-on-stage.de
Fingerprint SHA256: b5925a8dd954403486819b45852ba759aacc91a8f566a4f82b575e858fc2c9e5
Pin SHA256: grCdh52AlmlKKBup/Awcftpb1pvB+ixFn46+kTPLfe0=

RSA 2048 bits (e 65537) / SHA256withRSA
CRL ERROR: IOException occurred
2 Sent by server R13
Fingerprint SHA256: d3b128216a843f8ef1321501f5df52a5df52939ee2c19297712cd3de4d419354
Pin SHA256: AlSQhgtJirc8ahLyekmtX+Iw+v46yPYRLJt9Cq1GlB0=

RSA 2048 bits (e 65537) / SHA256withRSA
CRL ERROR: IOException occurred
3 In trust store ISRG Root X1   Self-signed
Fingerprint SHA256: 96bcec06264976f37460779acf28c5a7cfe8a3c0aae11a8ffcee05c0bddf08c6
Pin SHA256: C5+lpZ7tcVwmwQIMcRtPbsQtWLABXhQzejna0wHFr8M=

RSA 4096 bits (e 65537) / SHA256withRSA
Path #1: Trusted
1 Sent by server science-on-stage.de
Fingerprint SHA256: b5925a8dd954403486819b45852ba759aacc91a8f566a4f82b575e858fc2c9e5
Pin SHA256: grCdh52AlmlKKBup/Awcftpb1pvB+ixFn46+kTPLfe0=

RSA 2048 bits (e 65537) / SHA256withRSA
CRL ERROR: IOException occurred
2 Sent by server R13
Fingerprint SHA256: d3b128216a843f8ef1321501f5df52a5df52939ee2c19297712cd3de4d419354
Pin SHA256: AlSQhgtJirc8ahLyekmtX+Iw+v46yPYRLJt9Cq1GlB0=

RSA 2048 bits (e 65537) / SHA256withRSA
CRL ERROR: IOException occurred
3 In trust store ISRG Root X1   Self-signed
Fingerprint SHA256: 96bcec06264976f37460779acf28c5a7cfe8a3c0aae11a8ffcee05c0bddf08c6
Pin SHA256: C5+lpZ7tcVwmwQIMcRtPbsQtWLABXhQzejna0wHFr8M=

RSA 4096 bits (e 65537) / SHA256withRSA

Click here to expand

Certificate #2: RSA 2048 bits (SHA256withRSA)
Server Key and Certificate #1
Subject 109.188.205.92.host.secureserver.net
Fingerprint SHA256: 1a8828f9a1f8fad7994c3dabbf5605a0fa708268a9b8561f598d8b235224c8ad
Pin SHA256: 5tFyxjur394465pfJL2uOzhUj6OklGMoIpLATfJbzJc=
Common names 109.188.205.92.host.secureserver.net
Alternative names 109.188.205.92.host.secureserver.net   MISMATCH
Serial Number 4a510cefd06559b211b2fc1e4dbed653dea8096a
Valid from Fri, 28 Apr 2023 06:24:18 UTC
Valid until Mon, 25 Apr 2033 06:24:18 UTC (expires in 7 years and 5 months)
Key RSA 2048 bits (e 65537)
Weak key (Debian) No
Issuer 109.188.205.92.host.secureserver.net   Self-signed
Signature algorithm SHA256withRSA
Extended Validation No
Certificate Transparency No
OCSP Must Staple No
Revocation information None
Trusted No   NOT TRUSTED
Mozilla  Apple  Android  Java  Windows 


Additional Certificates (if supplied)
Certificates provided 1 (814 bytes)
Chain issues None


Certification Paths
Path #1: Not trusted (path does not chain to a trusted anchor)
1 Sent by server
  Not in trust store
109.188.205.92.host.secureserver.net   Self-signed
Fingerprint SHA256: 1a8828f9a1f8fad7994c3dabbf5605a0fa708268a9b8561f598d8b235224c8ad
Pin SHA256: 5tFyxjur394465pfJL2uOzhUj6OklGMoIpLATfJbzJc=

RSA 2048 bits (e 65537) / SHA256withRSA
Path #1: Not trusted (path does not chain to a trusted anchor)
1 Sent by server
  Not in trust store
109.188.205.92.host.secureserver.net   Self-signed
Fingerprint SHA256: 1a8828f9a1f8fad7994c3dabbf5605a0fa708268a9b8561f598d8b235224c8ad
Pin SHA256: 5tFyxjur394465pfJL2uOzhUj6OklGMoIpLATfJbzJc=

RSA 2048 bits (e 65537) / SHA256withRSA
Path #1: Not trusted (path does not chain to a trusted anchor)
1 Sent by server
  Not in trust store
109.188.205.92.host.secureserver.net   Self-signed
Fingerprint SHA256: 1a8828f9a1f8fad7994c3dabbf5605a0fa708268a9b8561f598d8b235224c8ad
Pin SHA256: 5tFyxjur394465pfJL2uOzhUj6OklGMoIpLATfJbzJc=

RSA 2048 bits (e 65537) / SHA256withRSA
Path #1: Not trusted (path does not chain to a trusted anchor)
1 Sent by server
  Not in trust store
109.188.205.92.host.secureserver.net   Self-signed
Fingerprint SHA256: 1a8828f9a1f8fad7994c3dabbf5605a0fa708268a9b8561f598d8b235224c8ad
Pin SHA256: 5tFyxjur394465pfJL2uOzhUj6OklGMoIpLATfJbzJc=

RSA 2048 bits (e 65537) / SHA256withRSA
Path #1: Not trusted (path does not chain to a trusted anchor)
1 Sent by server
  Not in trust store
109.188.205.92.host.secureserver.net   Self-signed
Fingerprint SHA256: 1a8828f9a1f8fad7994c3dabbf5605a0fa708268a9b8561f598d8b235224c8ad
Pin SHA256: 5tFyxjur394465pfJL2uOzhUj6OklGMoIpLATfJbzJc=

RSA 2048 bits (e 65537) / SHA256withRSA

Click here to expand

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 (suites in server-preferred order)
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
TLS_AES_128_GCM_SHA256 (0x1301)   ECDH x25519 (eq. 3072 bits RSA)   FS 128


Handshake Simulation
Android 8.1 -   TLS 1.3 TLS_AES_256_GCM_SHA384   ECDH x25519  FS
Android 9.0 -   TLS 1.3 TLS_AES_256_GCM_SHA384   ECDH x25519  FS
Chrome 69 / Win 7  R Server sent fatal alert: protocol_version
Chrome 70 / Win 10 -   TLS 1.3 TLS_AES_256_GCM_SHA384   ECDH x25519  FS
Chrome 80 / Win 10  R -   TLS 1.3 TLS_AES_256_GCM_SHA384   ECDH x25519  FS
Firefox 62 / Win 7  R Server sent fatal alert: protocol_version
Firefox 73 / Win 10  R -   TLS 1.3 TLS_AES_256_GCM_SHA384   ECDH x25519  FS
Java 11.0.3 -   TLS 1.3 TLS_AES_256_GCM_SHA384   ECDH secp256r1  FS
Java 12.0.1 -   TLS 1.3 TLS_AES_256_GCM_SHA384   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_AES_256_GCM_SHA384   ECDH x25519  FS
Safari 12.1.1 / iOS 12.3.1  R -   TLS 1.3 TLS_AES_256_GCM_SHA384   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) No
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 (server preferred order)
SSL 2 handshake compatibility No
0-RTT enabled No


HTTP Requests
1 https://www.science-on-stage.de/  (HTTP/1.1 200 OK)
1
Date Wed, 19 Nov 2025 09:29:41 GMT
Server Apache
Cache-Control must-revalidate, no-cache, private
X-Drupal-Dynamic-Cache MISS
Content-language de
X-Content-Type-Options nosniff
X-Frame-Options SAMEORIGIN
Expires Sun, 19 Nov 1978 05:00:00 GMT
X-Generator Drupal 10 (https://www.drupal.org)
X-Drupal-Cache HIT
Vary Accept-Encoding
Connection close
Transfer-Encoding chunked
Content-Type text/html; charset=UTF-8


Miscellaneous
Test date Wed, 19 Nov 2025 11:21:20 UTC
Test duration 20.465 seconds
HTTP status code 200
HTTP server signature Apache
Server hostname 109.188.205.92.host.secureserver.net


SSL Report v2.4.1