SSL Report: pc.mtc-edu.cn (47.96.193.203)
Assessed on:  Sat, 17 Jan 2026 08:06:01 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 (SHA256withRSA)
Server Key and Certificate #1
Subject pc.mtc-edu.cn
Fingerprint SHA256: 4ac7fe5eea19f0675485fb3df7d0c2ee2e7c88891f83009dcaf84b3a043da3cc
Pin SHA256: sfMqV1EpIwJZbLvMUKftVGwr90m35dJC2uadIFVl8Cw=
Common names pc.mtc-edu.cn
Alternative names pc.mtc-edu.cn www.pc.mtc-edu.cn
Serial Number 02105c58aabb5b755d8105c9d5f9a987
Valid from Wed, 30 Apr 2025 00:00:00 UTC
Valid until Wed, 29 Apr 2026 23:59:59 UTC (expires in 3 months and 12 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 


Additional Certificates (if supplied)
Certificates provided 2 (2742 bytes)
Chain issues None
#2
Subject Encryption Everywhere DV TLS CA - G2
Fingerprint SHA256: b1ac8cfb181b9c9354e1775fcbdfcfe7898c5cc9a17d76315b57c112eee55234
Pin SHA256: gxeKFFaZ2HFJIsTdTjEl6nVo3ckTCX+qzRMqb9Xoa1w=
Valid until Sat, 27 Nov 2027 12:46:40 UTC (expires in 1 year and 10 months)
Key RSA 2048 bits (e 65537)
Issuer DigiCert Global Root G2
Signature algorithm SHA256withRSA


Certification Paths
Path #1: Trusted
1 Sent by server pc.mtc-edu.cn
Fingerprint SHA256: 4ac7fe5eea19f0675485fb3df7d0c2ee2e7c88891f83009dcaf84b3a043da3cc
Pin SHA256: sfMqV1EpIwJZbLvMUKftVGwr90m35dJC2uadIFVl8Cw=
RSA 2048 bits (e 65537) / SHA256withRSA
2 Sent by server Encryption Everywhere DV TLS CA - G2
Fingerprint SHA256: b1ac8cfb181b9c9354e1775fcbdfcfe7898c5cc9a17d76315b57c112eee55234
Pin SHA256: gxeKFFaZ2HFJIsTdTjEl6nVo3ckTCX+qzRMqb9Xoa1w=
RSA 2048 bits (e 65537) / SHA256withRSA
3 In trust store DigiCert Global Root G2   Self-signed
Fingerprint SHA256: cb3ccbb76031e5e0138f8dd39a23f9de47ffc35e43c1144cea27d46a5ab1cb5f
Pin SHA256: i7WTqTvh0OioIruIfFR4kMPnBqrS2rdiVPl/s2uC/CY=
RSA 2048 bits (e 65537) / SHA256withRSA
Path #1: Trusted
1 Sent by server pc.mtc-edu.cn
Fingerprint SHA256: 4ac7fe5eea19f0675485fb3df7d0c2ee2e7c88891f83009dcaf84b3a043da3cc
Pin SHA256: sfMqV1EpIwJZbLvMUKftVGwr90m35dJC2uadIFVl8Cw=
RSA 2048 bits (e 65537) / SHA256withRSA
2 Sent by server Encryption Everywhere DV TLS CA - G2
Fingerprint SHA256: b1ac8cfb181b9c9354e1775fcbdfcfe7898c5cc9a17d76315b57c112eee55234
Pin SHA256: gxeKFFaZ2HFJIsTdTjEl6nVo3ckTCX+qzRMqb9Xoa1w=
RSA 2048 bits (e 65537) / SHA256withRSA
3 In trust store DigiCert Global Root G2   Self-signed
Fingerprint SHA256: cb3ccbb76031e5e0138f8dd39a23f9de47ffc35e43c1144cea27d46a5ab1cb5f
Pin SHA256: i7WTqTvh0OioIruIfFR4kMPnBqrS2rdiVPl/s2uC/CY=
RSA 2048 bits (e 65537) / SHA256withRSA
Path #1: Trusted
1 Sent by server pc.mtc-edu.cn
Fingerprint SHA256: 4ac7fe5eea19f0675485fb3df7d0c2ee2e7c88891f83009dcaf84b3a043da3cc
Pin SHA256: sfMqV1EpIwJZbLvMUKftVGwr90m35dJC2uadIFVl8Cw=
RSA 2048 bits (e 65537) / SHA256withRSA
2 Sent by server Encryption Everywhere DV TLS CA - G2
Fingerprint SHA256: b1ac8cfb181b9c9354e1775fcbdfcfe7898c5cc9a17d76315b57c112eee55234
Pin SHA256: gxeKFFaZ2HFJIsTdTjEl6nVo3ckTCX+qzRMqb9Xoa1w=
RSA 2048 bits (e 65537) / SHA256withRSA
3 In trust store DigiCert Global Root G2   Self-signed
Fingerprint SHA256: cb3ccbb76031e5e0138f8dd39a23f9de47ffc35e43c1144cea27d46a5ab1cb5f
Pin SHA256: i7WTqTvh0OioIruIfFR4kMPnBqrS2rdiVPl/s2uC/CY=
RSA 2048 bits (e 65537) / SHA256withRSA
Path #1: Trusted
1 Sent by server pc.mtc-edu.cn
Fingerprint SHA256: 4ac7fe5eea19f0675485fb3df7d0c2ee2e7c88891f83009dcaf84b3a043da3cc
Pin SHA256: sfMqV1EpIwJZbLvMUKftVGwr90m35dJC2uadIFVl8Cw=
RSA 2048 bits (e 65537) / SHA256withRSA
2 Sent by server Encryption Everywhere DV TLS CA - G2
Fingerprint SHA256: b1ac8cfb181b9c9354e1775fcbdfcfe7898c5cc9a17d76315b57c112eee55234
Pin SHA256: gxeKFFaZ2HFJIsTdTjEl6nVo3ckTCX+qzRMqb9Xoa1w=
RSA 2048 bits (e 65537) / SHA256withRSA
3 In trust store DigiCert Global Root G2   Self-signed
Fingerprint SHA256: cb3ccbb76031e5e0138f8dd39a23f9de47ffc35e43c1144cea27d46a5ab1cb5f
Pin SHA256: i7WTqTvh0OioIruIfFR4kMPnBqrS2rdiVPl/s2uC/CY=
RSA 2048 bits (e 65537) / SHA256withRSA
Path #1: Trusted
1 Sent by server pc.mtc-edu.cn
Fingerprint SHA256: 4ac7fe5eea19f0675485fb3df7d0c2ee2e7c88891f83009dcaf84b3a043da3cc
Pin SHA256: sfMqV1EpIwJZbLvMUKftVGwr90m35dJC2uadIFVl8Cw=
RSA 2048 bits (e 65537) / SHA256withRSA
2 Sent by server Encryption Everywhere DV TLS CA - G2
Fingerprint SHA256: b1ac8cfb181b9c9354e1775fcbdfcfe7898c5cc9a17d76315b57c112eee55234
Pin SHA256: gxeKFFaZ2HFJIsTdTjEl6nVo3ckTCX+qzRMqb9Xoa1w=
RSA 2048 bits (e 65537) / SHA256withRSA
3 In trust store DigiCert Global Root G2   Self-signed
Fingerprint SHA256: cb3ccbb76031e5e0138f8dd39a23f9de47ffc35e43c1144cea27d46a5ab1cb5f
Pin SHA256: i7WTqTvh0OioIruIfFR4kMPnBqrS2rdiVPl/s2uC/CY=
RSA 2048 bits (e 65537) / SHA256withRSA

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_AES_128_GCM_SHA256 (0x1301)   ECDH x25519 (eq. 3072 bits RSA)   FS 128
TLS_CHACHA20_POLY1305_SHA256 (0x1303)   ECDH x25519 (eq. 3072 bits RSA)   FS 256


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: handshake_failure
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: handshake_failure
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: handshake_failure
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   h2 http/1.1
Session resumption (tickets) No
OCSP stapling No
Strict Transport Security (HSTS) Yes
max-age=31536000; includeSubDomains; preload
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://pc.mtc-edu.cn/  (HTTP/1.1 200 OK)
1
Date Sat, 17 Jan 2026 08:05:33 GMT
Content-Type text/html
Content-Length 1289
Connection close
Set-Cookie acw_tc=ac11000117686371330507752e2f1fe83bb3bad3f6a9e36315aa11e2dd23ce;path=/;Secure;HttpOnly;Max-Age=1800
Server nginx
Last-Modified Sat, 20 Dec 2025 08:11:54 GMT
ETag "69465a4a-509"
X-Frame-Options SAMEORIGIN
X-XSS-Protection 1; mode=block
X-Content-Type-Options nosniff
Strict-Transport-Security max-age=31536000; includeSubDomains; preload
Referrer-Policy strict-origin-when-cross-origin
Permissions-Policy accelerometer=(), autoplay=(), camera=(), display-capture=(), encrypted-media=(), fullscreen=(), geolocation=(), gyroscope=(), magnetometer=(), microphone=(), midi=(), payment=(), picture-in-picture=(), publickey-credentials-get=(), screen-wake-lock=(), sync-xhr=(), usb=(), web-share=(), xr-spatial-tracking=()
X-Permitted-Cross-Domain-Policies none
X-Download-Options noopen
Content-Security-Policy default-src 'self' https://mingqiang2x.oss-cn-shanghai.aliyuncs.com https://teacher.mtc-edu.cn https://scholar.mtc-edu.cn; script-src 'self'; style-src 'self'; img-src 'self' data: blob: https://mingqiang2x.oss-cn-shanghai.aliyuncs.com https://stone-laugh.oss-cn-shanghai.aliyuncs.com; font-src 'self'; connect-src 'self' blob: data: https://teacher.mtc-edu.cn https://scholar.mtc-edu.cn https://mingqiang2x.oss-cn-shanghai.aliyuncs.com; frame-src 'self'; frame-ancestors 'self'; form-action 'self'; base-uri 'self'; worker-src 'self' blob:; media-src 'self' blob:; object-src 'none';
Cross-Origin-Embedder-Policy unsafe-none
Cross-Origin-Opener-Policy unsafe-none
Cross-Origin-Resource-Policy cross-origin
Access-Control-Allow-Origin https://pc.mtc-edu.cn
Access-Control-Allow-Methods GET, POST, OPTIONS
Access-Control-Allow-Headers DNT,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Range
Access-Control-Expose-Headers Content-Length,Content-Range
Access-Control-Allow-Credentials true
Cache-Control no-cache, no-store, must-revalidate
Pragma no-cache
Expires 0
Accept-Ranges bytes


Miscellaneous
Test date Sat, 17 Jan 2026 08:05:17 UTC
Test duration 44.357 seconds
HTTP status code 200
HTTP server signature nginx
Server hostname -


SSL Report v2.4.1