SSL Report:
zcgl.sepc.edu.cn
(218.57.128.23)
Assessed on: Mon, 16 Jun 2025 00:28:56 UTC
| Clear cache
Summary
0
20
40
60
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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 server supports weak Diffie-Hellman (DH) key exchange parameters. Grade capped to B.
MORE INFO »
This server does not support Forward Secrecy with the reference browsers.
Grade capped to B.
MORE INFO »
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 |
zcgl.sepc.edu.cn
Fingerprint SHA256: c39cbf7fd3862263e54e736642e8a5272ee27a5561a7841e733a25b2da0297dd Pin SHA256: p8CswaFXN1HQcY632pXmAZs1VpeC2qPxOgdDTQmn4Tg= |
| Common names | zcgl.sepc.edu.cn |
| Alternative names | zcgl.sepc.edu.cn |
| Serial Number | 0a11dfa584bead4420ff28b1d77c3859 |
| Valid from | Wed, 19 Feb 2025 00:00:00 UTC |
| Valid until | Thu, 19 Feb 2026 23:59:59 UTC (expires in 8 months and 3 days) |
| Key | RSA 2048 bits (e 65537) |
| Weak key (Debian) | No |
| Issuer | Encryption Everywhere DV TLS CA - G2
AIA: http://cacerts.digicert.com/EncryptionEverywhereDVTLSCA-G2.crt |
| Signature algorithm | SHA256withRSA |
| Extended Validation | No |
| Certificate Transparency | Yes (certificate) |
| OCSP Must Staple | No |
| Revocation information |
OCSP OCSP: http://ocsp.digicert.com |
| 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
|
Certification Paths |
Configuration
| Protocols | |
| TLS 1.3 | Yes |
| TLS 1.2 | Yes* |
| TLS 1.1 | No |
| TLS 1.0 | No |
| SSL 3 | No |
| SSL 2 | No |
| (*) Experimental: Server negotiated using No-SNI | |
| Cipher Suites | ||
|
# TLS 1.3 (server has no preference)
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TLS_AES_128_GCM_SHA256 (0x1301)
ECDH x25519 (eq. 3072 bits RSA) FS
|
128 | |
TLS_AES_128_CCM_SHA256 (0x1304)
ECDH x25519 (eq. 3072 bits RSA) FS
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128 | |
TLS_AES_128_CCM_8_SHA256 (0x1305)
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
|
256 | |
TLS_CHACHA20_POLY1305_SHA256 (0x1303)
ECDH x25519 (eq. 3072 bits RSA) FS
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256 | |
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# TLS 1.2 (server has no preference)
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TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA (0xc012)
ECDH secp521r1 (eq. 15360 bits RSA) FS
WEAK
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112 | |
TLS_DHE_RSA_WITH_AES_128_CBC_SHA (0x33)
DH 1024 bits FS
WEAK
|
128 | |
TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA (0xc013)
ECDH secp521r1 (eq. 15360 bits RSA) FS
WEAK
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128 | |
TLS_RSA_WITH_AES_128_CBC_SHA256 (0x3c)
WEAK
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128 | |
TLS_DHE_RSA_WITH_AES_128_CBC_SHA256 (0x67)
DH 1024 bits FS
WEAK
|
128 | |
TLS_RSA_WITH_AES_128_GCM_SHA256 (0x9c)
WEAK
|
128 | |
TLS_DHE_RSA_WITH_AES_128_GCM_SHA256 (0x9e)
DH 1024 bits FS
WEAK
|
128 | |
TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256 (0xc027)
ECDH secp521r1 (eq. 15360 bits RSA) FS
WEAK
|
128 | |
TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 (0xc02f)
ECDH secp521r1 (eq. 15360 bits RSA) FS
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128 | |
TLS_DHE_RSA_WITH_AES_256_CBC_SHA (0x39)
DH 1024 bits FS
WEAK
|
256 | |
TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA (0xc014)
ECDH secp521r1 (eq. 15360 bits RSA) FS
WEAK
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256 | |
TLS_RSA_WITH_AES_256_CBC_SHA256 (0x3d)
WEAK
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256 | |
TLS_DHE_RSA_WITH_AES_256_CBC_SHA256 (0x6b)
DH 1024 bits FS
WEAK
|
256 | |
TLS_RSA_WITH_AES_256_GCM_SHA384 (0x9d)
WEAK
|
256 | |
TLS_DHE_RSA_WITH_AES_256_GCM_SHA384 (0x9f)
DH 1024 bits FS
WEAK
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256 | |
TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384 (0xc028)
ECDH secp521r1 (eq. 15360 bits RSA) FS
WEAK
|
256 | |
TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (0xc030)
ECDH secp521r1 (eq. 15360 bits RSA) FS
|
256 | |
| Handshake Simulation | |||
| Android 4.4.2 | RSA 2048 (SHA256) | TLS 1.2 | TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 ECDH secp521r1 FS |
| Android 5.0.0 | RSA 2048 (SHA256) | TLS 1.2 | TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA ECDH secp521r1 FS |
| Android 6.0 | RSA 2048 (SHA256) | TLS 1.2 | TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 ECDH secp256r1 FS |
| Android 7.0 | RSA 2048 (SHA256) | TLS 1.2 | TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 ECDH x25519 FS |
| Android 8.0 | RSA 2048 (SHA256) | TLS 1.2 | TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 ECDH x25519 FS |
| 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 |
| BingPreview Jan 2015 | RSA 2048 (SHA256) | TLS 1.2 | TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 ECDH secp521r1 FS |
| Chrome 49 / XP SP3 | RSA 2048 (SHA256) | TLS 1.2 | TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 ECDH secp256r1 FS |
| Chrome 69 / Win 7 R | RSA 2048 (SHA256) | TLS 1.2 | TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 ECDH x25519 FS |
| 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 31.3.0 ESR / Win 7 | RSA 2048 (SHA256) | TLS 1.2 | TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 ECDH secp256r1 FS |
| Firefox 47 / Win 7 R | RSA 2048 (SHA256) | TLS 1.2 | TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 ECDH secp256r1 FS |
| Firefox 49 / XP SP3 | RSA 2048 (SHA256) | TLS 1.2 | TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 ECDH secp256r1 FS |
| Firefox 62 / Win 7 R | RSA 2048 (SHA256) | TLS 1.2 | TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 ECDH x25519 FS |
| Firefox 73 / Win 10 R | - | TLS 1.3 | TLS_AES_128_GCM_SHA256 ECDH x25519 FS |
| Googlebot Feb 2018 | RSA 2048 (SHA256) | TLS 1.2 | TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 ECDH x25519 FS |
| IE 11 / Win 7 R | RSA 2048 (SHA256) | TLS 1.2 | TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384 ECDH secp256r1 FS |
| IE 11 / Win 8.1 R | RSA 2048 (SHA256) | TLS 1.2 | TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384 ECDH secp256r1 FS |
| IE 11 / Win Phone 8.1 R | RSA 2048 (SHA256) | TLS 1.2 | TLS_RSA_WITH_AES_128_CBC_SHA256 No FS |
| IE 11 / Win Phone 8.1 Update R | RSA 2048 (SHA256) | TLS 1.2 | TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384 ECDH secp256r1 FS |
| IE 11 / Win 10 R | RSA 2048 (SHA256) | TLS 1.2 | TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 ECDH secp256r1 FS |
| Edge 15 / Win 10 R | RSA 2048 (SHA256) | TLS 1.2 | TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 ECDH x25519 FS |
| Edge 16 / Win 10 R | RSA 2048 (SHA256) | TLS 1.2 | TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 ECDH x25519 FS |
| Edge 18 / Win 10 R | RSA 2048 (SHA256) | TLS 1.2 | TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 ECDH x25519 FS |
| Edge 13 / Win Phone 10 R | RSA 2048 (SHA256) | TLS 1.2 | TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 ECDH secp256r1 FS |
| Java 8u161 | RSA 2048 (SHA256) | TLS 1.2 | TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384 ECDH secp256r1 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 1.0.1l R | RSA 2048 (SHA256) | TLS 1.2 | TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 ECDH secp521r1 FS |
| OpenSSL 1.0.2s R | RSA 2048 (SHA256) | TLS 1.2 | TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 ECDH secp256r1 FS |
| OpenSSL 1.1.0k R | RSA 2048 (SHA256) | TLS 1.2 | TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 ECDH x25519 FS |
| OpenSSL 1.1.1c R | - | TLS 1.3 | TLS_AES_256_GCM_SHA384 ECDH x25519 FS |
| Safari 6 / iOS 6.0.1 | RSA 2048 (SHA256) | TLS 1.2 | TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384 ECDH secp256r1 FS |
| Safari 7 / iOS 7.1 R | RSA 2048 (SHA256) | TLS 1.2 | TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384 ECDH secp256r1 FS |
| Safari 7 / OS X 10.9 R | RSA 2048 (SHA256) | TLS 1.2 | TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384 ECDH secp256r1 FS |
| Safari 8 / iOS 8.4 R | RSA 2048 (SHA256) | TLS 1.2 | TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384 ECDH secp256r1 FS |
| Safari 8 / OS X 10.10 R | RSA 2048 (SHA256) | TLS 1.2 | TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384 ECDH secp256r1 FS |
| Safari 9 / iOS 9 R | RSA 2048 (SHA256) | TLS 1.2 | TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 ECDH secp256r1 FS |
| Safari 9 / OS X 10.11 R | RSA 2048 (SHA256) | TLS 1.2 | TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 ECDH secp256r1 FS |
| Safari 10 / iOS 10 R | RSA 2048 (SHA256) | TLS 1.2 | TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 ECDH secp256r1 FS |
| Safari 10 / OS X 10.12 R | RSA 2048 (SHA256) | TLS 1.2 | TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 ECDH secp256r1 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 |
| Apple ATS 9 / iOS 9 R | RSA 2048 (SHA256) | TLS 1.2 | TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 ECDH secp256r1 FS |
| Yahoo Slurp Jan 2015 | RSA 2048 (SHA256) | TLS 1.2 | TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 ECDH secp384r1 FS |
| YandexBot Jan 2015 | RSA 2048 (SHA256) | TLS 1.2 | TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 ECDH secp521r1 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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| Baidu Jan 2015 |
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 10 / Win Phone 8.0 |
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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| OpenSSL 0.9.8y |
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 6.0.4 / OS X 10.8.4 R |
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 | |
| Secure Renegotiation | Supported |
| Secure Client-Initiated Renegotiation | Yes |
| Insecure Client-Initiated Renegotiation | No |
| BEAST attack | Mitigated server-side (more info) |
| POODLE (SSLv3) | No, SSL 3 not supported (more info) |
| POODLE (TLS) | No (more info) |
| Zombie POODLE | No (more info)
TLS 1.2 : 0x003c
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| GOLDENDOODLE | No (more info)
TLS 1.2 : 0x003c
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| OpenSSL 0-Length | No (more info)
TLS 1.2 : 0x003c
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| Sleeping POODLE | No (more info)
TLS 1.2 : 0x003c
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| Downgrade attack prevention | Yes, TLS_FALLBACK_SCSV supported (more info) |
| SSL/TLS compression | No |
| RC4 | No |
| Heartbeat (extension) | No |
| Heartbleed (vulnerability) | No (more info) |
| Ticketbleed (vulnerability) | No (more info) |
| OpenSSL CCS vuln. (CVE-2014-0224) | No (more info) |
| OpenSSL Padding Oracle vuln. (CVE-2016-2107) |
No (more info) |
| ROBOT (vulnerability) | No (more info) |
| Forward Secrecy | Weak key exchange WEAK |
| ALPN | No |
| NPN | No |
| Session resumption (caching) | No (IDs empty) |
| Session resumption (tickets) | Yes |
| 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) |
| Long handshake intolerance | No |
| TLS extension intolerance | No |
| TLS version intolerance | No |
| Incorrect SNI alerts | No |
| Uses common DH primes | Yes Replace with custom DH parameters if possible (more info) |
| DH public server param (Ys) reuse | No |
| ECDH public server param reuse | No |
| Supported Named Groups | secp256r1, secp384r1, secp521r1, x25519, x448 (Server has no preference) |
| SSL 2 handshake compatibility | Yes |
| 0-RTT enabled | No |
|
HTTP Requests
|
|
1 https://zcgl.sepc.edu.cn/
(HTTP/1.1 200 OK)
| 1 | |
| Server | none | |
| Date | Mon, 16 Jun 2025 00:27:27 GMT | |
| Content-Type | text/html; charset=utf-8 | |
| Transfer-Encoding | chunked | |
| Connection | close | |
| Vary | Accept-Encoding | |
| X-Frame-Options | DENY | |
| Accept-Ranges | bytes | |
| Miscellaneous | |
| Test date | Mon, 16 Jun 2025 00:26:43 UTC |
| Test duration | 132.927 seconds |
| HTTP status code | 200 |
| HTTP server signature | none |
| Server hostname | - |
SSL Report v2.4.0