SSL Report:
contacten.develop.sslleiden.nl
(209.38.53.68)
Assessed on: Sun, 20 Jul 2025 13:04:10 UTC
| Clear cache
Summary
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 site works only in browsers with SNI support.
This server supports TLS 1.3. MORE INFO »
HTTP Strict Transport Security (HSTS) with long duration deployed on this server.
MORE INFO »
Certificate #1: EC 256 bits (SHA384withECDSA)
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Server Key and Certificate #1
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| Subject |
-
Fingerprint SHA256: 662330527e58da10d700575a2d9e5ac3f5c47a0e8a07b953a4067394be9055a2 Pin SHA256: DobxmMMecbBQGJa83UUqCOuhzdywfBtIUGCo9b3Boqg= |
| Common names | - |
| Alternative names | contacten.develop.sslleiden.nl |
| Serial Number | 06870aa8930c7b2ed4b874d317174ebd32e5 |
| Valid from | Tue, 24 Jun 2025 09:13:12 UTC |
| Valid until | Mon, 22 Sep 2025 09:13:11 UTC (expires in 2 months and 1 day) |
| Key | EC 256 bits |
| Weak key (Debian) | No |
| Issuer | E6
AIA: http://e6.i.lencr.org/ |
| Signature algorithm | SHA384withECDSA |
| Extended Validation | No |
| Certificate Transparency | Yes (certificate) |
| OCSP Must Staple | No |
| Revocation information |
CRL CRL: http://e6.c.lencr.org/102.crl |
| Revocation status | Good (not revoked) |
| DNS CAA | No (more info) |
| Trusted | Yes
Mozilla Apple Android Java Windows |
Certification Paths |
Certificate #2: RSA 2048 bits (SHA256withRSA)
No SNI
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Additional Certificates (if supplied)
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| Certificates provided | 1 (866 bytes) |
| Chain issues | None |
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Certification Paths |
Configuration
| Protocols | |
| TLS 1.3 | Yes |
| TLS 1.2 | No* |
| TLS 1.1 | No |
| TLS 1.0 | No |
| SSL 3 | No |
| SSL 2 | No |
| (*) Experimental: Server negotiated using No-SNI | |
| Cipher Suites | ||
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# TLS 1.3 (suites in server-preferred order)
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TLS_AES_128_GCM_SHA256 (0x1301)
ECDH x25519 (eq. 3072 bits RSA) FS
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128 | |
TLS_AES_256_GCM_SHA384 (0x1302)
ECDH x25519 (eq. 3072 bits RSA) FS
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256 | |
TLS_CHACHA20_POLY1305_SHA256 (0x1303)
ECDH x25519 (eq. 3072 bits RSA) FS
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256P | |
| 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 |
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| 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 |
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| 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 |
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| OpenSSL 1.1.1c R | - | TLS 1.3 | TLS_AES_128_GCM_SHA256 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 |
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# Not simulated clients (Protocol mismatch)
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| Android 2.3.7 No SNI 2 |
Protocol mismatch (not simulated) |
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| Android 4.0.4 |
Protocol mismatch (not simulated) |
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| Android 4.1.1 |
Protocol mismatch (not simulated) |
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| Android 4.2.2 |
Protocol mismatch (not simulated) |
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| Android 4.3 |
Protocol mismatch (not simulated) |
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| Android 4.4.2 |
Protocol mismatch (not simulated) |
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| Android 5.0.0 |
Protocol mismatch (not simulated) |
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| Android 6.0 |
Protocol mismatch (not simulated) |
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| Android 7.0 |
Protocol mismatch (not simulated) |
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| Android 8.0 |
Protocol mismatch (not simulated) |
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| Baidu Jan 2015 |
Protocol mismatch (not simulated) |
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| BingPreview Jan 2015 |
Protocol mismatch (not simulated) |
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| Chrome 49 / XP SP3 |
Protocol mismatch (not simulated) |
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| Firefox 31.3.0 ESR / Win 7 |
Protocol mismatch (not simulated) |
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| Firefox 47 / Win 7 R |
Protocol mismatch (not simulated) |
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| Firefox 49 / XP SP3 |
Protocol mismatch (not simulated) |
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| Googlebot Feb 2018 |
Protocol mismatch (not simulated) |
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| IE 6 / XP No FS 1 No SNI 2 |
Protocol mismatch (not simulated) |
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| IE 7 / Vista |
Protocol mismatch (not simulated) |
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| IE 8 / XP No FS 1 No SNI 2 |
Protocol mismatch (not simulated) |
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| IE 8-10 / Win 7 R |
Protocol mismatch (not simulated) |
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| IE 11 / Win 7 R |
Protocol mismatch (not simulated) |
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| IE 11 / Win 8.1 R |
Protocol mismatch (not simulated) |
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| IE 10 / Win Phone 8.0 |
Protocol mismatch (not simulated) |
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| IE 11 / Win Phone 8.1 R |
Protocol mismatch (not simulated) |
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| IE 11 / Win Phone 8.1 Update R |
Protocol mismatch (not simulated) |
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| IE 11 / Win 10 R |
Protocol mismatch (not simulated) |
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| Edge 15 / Win 10 R |
Protocol mismatch (not simulated) |
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| Edge 16 / Win 10 R |
Protocol mismatch (not simulated) |
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| Edge 18 / Win 10 R |
Protocol mismatch (not simulated) |
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| Edge 13 / Win Phone 10 R |
Protocol mismatch (not simulated) |
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| Java 6u45 No SNI 2 |
Protocol mismatch (not simulated) |
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| Java 7u25 |
Protocol mismatch (not simulated) |
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| Java 8u161 |
Protocol mismatch (not simulated) |
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| OpenSSL 0.9.8y |
Protocol mismatch (not simulated) |
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| OpenSSL 1.0.1l R |
Protocol mismatch (not simulated) |
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| OpenSSL 1.0.2s R |
Protocol mismatch (not simulated) |
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| Safari 5.1.9 / OS X 10.6.8 |
Protocol mismatch (not simulated) |
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| Safari 6 / iOS 6.0.1 |
Protocol mismatch (not simulated) |
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| Safari 6.0.4 / OS X 10.8.4 R |
Protocol mismatch (not simulated) |
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| Safari 7 / iOS 7.1 R |
Protocol mismatch (not simulated) |
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| Safari 7 / OS X 10.9 R |
Protocol mismatch (not simulated) |
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| Safari 8 / iOS 8.4 R |
Protocol mismatch (not simulated) |
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| Safari 8 / OS X 10.10 R |
Protocol mismatch (not simulated) |
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| Safari 9 / iOS 9 R |
Protocol mismatch (not simulated) |
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| Safari 9 / OS X 10.11 R |
Protocol mismatch (not simulated) |
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| Safari 10 / iOS 10 R |
Protocol mismatch (not simulated) |
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| Safari 10 / OS X 10.12 R |
Protocol mismatch (not simulated) |
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| Apple ATS 9 / iOS 9 R |
Protocol mismatch (not simulated) |
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| Yahoo Slurp Jan 2015 |
Protocol mismatch (not simulated) |
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| YandexBot Jan 2015 |
Protocol mismatch (not simulated) |
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| (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 h2 http/1.1 |
| Session resumption (tickets) | No |
| OCSP stapling | No |
| Strict Transport Security (HSTS) | Yes
max-age=63072000 |
| 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 |
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HTTP Requests
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|
1 https://contacten.develop.sslleiden.nl/
(HTTP/1.1 401 Unauthorized)
| 1 | |
| Alt-Svc | h3=":443"; ma=2592000 | |
| Content-Type | text/plain | |
| Referrer-Policy | strict-origin-when-cross-origin | |
| Strict-Transport-Security | max-age=63072000 | |
| Www-Authenticate | Basic realm="traefik" | |
| X-Content-Type-Options | nosniff | |
| X-Frame-Options | SAMEORIGIN | |
| Date | Sun, 20 Jul 2025 13:03:49 GMT | |
| Content-Length | 17 | |
| Connection | close | |
| Miscellaneous | |
| Test date | Sun, 20 Jul 2025 13:03:41 UTC |
| Test duration | 28.416 seconds |
| HTTP status code | 401 |
| HTTP server signature | - |
| Server hostname | - |
SSL Report v2.4.1