SSL Report:
www.gas-as.cz
(81.2.197.67)
Assessed on: Sun, 08 Jun 2025 16:54:40 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 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: RSA 3072 bits (SHA256withRSA)
|
Server Key and Certificate #1
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|
| Subject |
www.gas-as.cz
Fingerprint SHA256: 9f1f8cf7cdc82d7d32b6f76a3b343f9bc87582ebdc5a97660bf34e1a00d28082 Pin SHA256: UiZeApx9uK5ww04FF4e9I6HDs7b9K0ZDZdFzMyaO/qk= |
| Common names | www.gas-as.cz |
| Alternative names | gas-as.cz gas.ibyznys.cz www.gas-as.cz |
| Serial Number | 0518fa3ef3e393b9088fe632f01b1185c94e |
| Valid from | Fri, 18 Apr 2025 08:26:58 UTC |
| Valid until | Thu, 17 Jul 2025 08:26:57 UTC (expires in 1 month and 8 days) |
| Key | RSA 3072 bits (e 65537) |
| Weak key (Debian) | No |
| Issuer | R11
AIA: http://r11.i.lencr.org/ |
| Signature algorithm | SHA256withRSA |
| Extended Validation | No |
| Certificate Transparency | Yes (certificate) |
| OCSP Must Staple | No |
| Revocation information |
CRL, OCSP CRL: http://r11.c.lencr.org/79.crl OCSP: http://r11.o.lencr.org |
| Revocation status | Good (not revoked) |
| DNS CAA | No (more info) |
| Trusted | Yes
Mozilla Apple Android Java Windows |
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 |
| Cipher Suites | ||
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# TLS 1.3 (suites in server-preferred order)
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TLS_AES_256_GCM_SHA384 (0x1302)
ECDH secp384r1 (eq. 7680 bits RSA) FS
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256 | |
TLS_CHACHA20_POLY1305_SHA256 (0x1303)
ECDH secp384r1 (eq. 7680 bits RSA) FS
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256 | |
TLS_AES_128_GCM_SHA256 (0x1301)
ECDH x25519 (eq. 3072 bits RSA) FS
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128 | |
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# TLS 1.2 (suites in server-preferred order)
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TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (0xc030)
ECDH secp384r1 (eq. 7680 bits RSA) FS
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256 | |
TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 (0xc02f)
ECDH x25519 (eq. 3072 bits RSA) FS
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128 | |
TLS_DHE_RSA_WITH_AES_256_GCM_SHA384 (0x9f)
DH 2048 bits FS
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256 | |
TLS_DHE_RSA_WITH_AES_128_GCM_SHA256 (0x9e)
DH 2048 bits FS
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128 | |
| Handshake Simulation | |||
| Android 4.4.2 | RSA 3072 (SHA256) | TLS 1.2 | TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 ECDH secp384r1 FS |
| Android 5.0.0 | RSA 3072 (SHA256) | TLS 1.2 | TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 ECDH secp256r1 FS |
| Android 6.0 | RSA 3072 (SHA256) | TLS 1.2 > http/1.1 | TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 ECDH secp256r1 FS |
| Android 7.0 | RSA 3072 (SHA256) | TLS 1.2 > h2 | TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 ECDH secp384r1 FS |
| Android 8.0 | RSA 3072 (SHA256) | TLS 1.2 > h2 | TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 ECDH secp384r1 FS |
| Android 8.1 | - | TLS 1.3 | TLS_AES_256_GCM_SHA384 ECDH secp384r1 FS |
| Android 9.0 | - | TLS 1.3 | TLS_AES_256_GCM_SHA384 ECDH secp384r1 FS |
| BingPreview Jan 2015 | RSA 3072 (SHA256) | TLS 1.2 | TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 ECDH secp384r1 FS |
| Chrome 49 / XP SP3 | RSA 3072 (SHA256) | TLS 1.2 > h2 | TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 ECDH secp256r1 FS |
| Chrome 69 / Win 7 R | RSA 3072 (SHA256) | TLS 1.2 > h2 | TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 ECDH secp384r1 FS |
| Chrome 70 / Win 10 | - | TLS 1.3 | TLS_AES_256_GCM_SHA384 ECDH secp384r1 FS |
| Chrome 80 / Win 10 R | - | TLS 1.3 | TLS_AES_256_GCM_SHA384 ECDH secp384r1 FS |
| Firefox 31.3.0 ESR / Win 7 | RSA 3072 (SHA256) | TLS 1.2 | TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 ECDH secp256r1 FS |
| Firefox 47 / Win 7 R | RSA 3072 (SHA256) | TLS 1.2 > h2 | TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 ECDH secp256r1 FS |
| Firefox 49 / XP SP3 | RSA 3072 (SHA256) | TLS 1.2 > h2 | TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 ECDH secp384r1 FS |
| Firefox 62 / Win 7 R | RSA 3072 (SHA256) | TLS 1.2 > h2 | TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 ECDH secp384r1 FS |
| Firefox 73 / Win 10 R | - | TLS 1.3 | TLS_AES_256_GCM_SHA384 ECDH secp384r1 FS |
| Googlebot Feb 2018 | RSA 3072 (SHA256) | TLS 1.2 | TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 ECDH secp384r1 FS |
| IE 11 / Win 7 R | RSA 3072 (SHA256) | TLS 1.2 | TLS_DHE_RSA_WITH_AES_256_GCM_SHA384 DH 2048 FS |
| IE 11 / Win 8.1 R | RSA 3072 (SHA256) | TLS 1.2 > http/1.1 | TLS_DHE_RSA_WITH_AES_256_GCM_SHA384 DH 2048 FS |
| IE 11 / Win Phone 8.1 R |
Server closed connection |
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| IE 11 / Win Phone 8.1 Update R | RSA 3072 (SHA256) | TLS 1.2 > http/1.1 | TLS_DHE_RSA_WITH_AES_256_GCM_SHA384 DH 2048 FS |
| IE 11 / Win 10 R | RSA 3072 (SHA256) | TLS 1.2 > h2 | TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 ECDH secp384r1 FS |
| Edge 15 / Win 10 R | RSA 3072 (SHA256) | TLS 1.2 > h2 | TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 ECDH secp384r1 FS |
| Edge 16 / Win 10 R | RSA 3072 (SHA256) | TLS 1.2 > h2 | TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 ECDH secp384r1 FS |
| Edge 18 / Win 10 R | RSA 3072 (SHA256) | TLS 1.2 > h2 | TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 ECDH secp384r1 FS |
| Edge 13 / Win Phone 10 R | RSA 3072 (SHA256) | TLS 1.2 > h2 | TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 ECDH secp384r1 FS |
| Java 8u161 | RSA 3072 (SHA256) | TLS 1.2 | TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 ECDH secp384r1 FS |
| Java 11.0.3 | - | TLS 1.3 | TLS_AES_256_GCM_SHA384 ECDH secp384r1 FS |
| Java 12.0.1 | - | TLS 1.3 | TLS_AES_256_GCM_SHA384 ECDH secp384r1 FS |
| OpenSSL 1.0.1l R | RSA 3072 (SHA256) | TLS 1.2 | TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 ECDH secp384r1 FS |
| OpenSSL 1.0.2s R | RSA 3072 (SHA256) | TLS 1.2 | TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 ECDH secp384r1 FS |
| OpenSSL 1.1.0k R | RSA 3072 (SHA256) | TLS 1.2 | TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 ECDH secp384r1 FS |
| OpenSSL 1.1.1c R | - | TLS 1.3 | TLS_AES_256_GCM_SHA384 ECDH secp384r1 FS |
| Safari 6 / iOS 6.0.1 |
Server closed connection |
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| Safari 7 / iOS 7.1 R |
Server closed connection |
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| Safari 7 / OS X 10.9 R |
Server closed connection |
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| Safari 8 / iOS 8.4 R |
Server closed connection |
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| Safari 8 / OS X 10.10 R |
Server closed connection |
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| Safari 9 / iOS 9 R | RSA 3072 (SHA256) | TLS 1.2 > h2 | TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 ECDH secp384r1 FS |
| Safari 9 / OS X 10.11 R | RSA 3072 (SHA256) | TLS 1.2 > h2 | TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 ECDH secp384r1 FS |
| Safari 10 / iOS 10 R | RSA 3072 (SHA256) | TLS 1.2 > h2 | TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 ECDH secp384r1 FS |
| Safari 10 / OS X 10.12 R | RSA 3072 (SHA256) | TLS 1.2 > h2 | TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 ECDH secp384r1 FS |
| Safari 12.1.2 / MacOS 10.14.6 Beta R | - | TLS 1.3 | TLS_AES_256_GCM_SHA384 ECDH secp384r1 FS |
| Safari 12.1.1 / iOS 12.3.1 R | - | TLS 1.3 | TLS_AES_256_GCM_SHA384 ECDH secp384r1 FS |
| Apple ATS 9 / iOS 9 R | RSA 3072 (SHA256) | TLS 1.2 > h2 | TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 ECDH secp384r1 FS |
| Yahoo Slurp Jan 2015 | RSA 3072 (SHA256) | TLS 1.2 | TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 ECDH secp384r1 FS |
| YandexBot Jan 2015 | RSA 3072 (SHA256) | TLS 1.2 | TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 ECDH secp384r1 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 | No |
| 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) |
| GOLDENDOODLE | No (more info) |
| OpenSSL 0-Length | No (more info) |
| Sleeping POODLE | No (more info) |
| Downgrade attack prevention | No, TLS_FALLBACK_SCSV not 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 | Yes (with most browsers) ROBUST (more info) |
| ALPN | Yes h2 http/1.1 |
| NPN | No |
| Session resumption (caching) | No (IDs assigned but not accepted) |
| Session resumption (tickets) | No |
| OCSP stapling | Yes |
| Strict Transport Security (HSTS) | Yes
max-age=31536000 |
| 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 | No |
| DH public server param (Ys) reuse | No |
| ECDH public server param reuse | No |
| Supported Named Groups | secp384r1, x25519, secp256r1 (server preferred order) |
| SSL 2 handshake compatibility | No |
| 0-RTT enabled | No |
|
HTTP Requests
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|
1 https://www.gas-as.cz/
(HTTP/1.1 200 OK)
| 1 | |
| Cache-Control | max-age=0, no-cache, private | |
| Pragma | no-cache | |
| Content-Type | text/html; charset=windows-1250 | |
| Vary | Origin | |
| Server | ||
| Set-Cookie | __Secure-iBTc=1; Path=/; Secure; HttpOnly; Priority=High | |
| Content-Security-Policy | block-all-mixed-content; default-src 'none' ; report-uri https://report.ibyznys.cz/csp-violation-report-endpoint ; style-src 'self' 'unsafe-inline' 'nonce-4miBdfdyqWnYHzN6vNUCfN9Xxsgx' ; object-src 'none'; img-src 'self' blob: data: https://maps.google.com ; connect-src 'self' ; font-src 'self' ; media-src 'self'; frame-src 'self' ; child-src 'self' ; frame-ancestors 'none'; form-action 'self' https://report.ibyznys.cz ; manifest-src 'self' ; base-uri 'self'; worker-src 'self' blob:; script-src 'self' https://ajax.googleapis.com 'unsafe-inline' 'strict-dynamic' 'nonce-4miBdfdyqWnYHzN6vNUCfN9Xxsgx' http: https: ; | |
| Access-Control-Allow-Origin | https://www.gas-as.cz | |
| Access-Control-Allow-Credentials | false | |
| X-Frame-Options | DENY | |
| X-Xss-Protection | 1; mode=block | |
| X-Content-Type-Options | nosniff | |
| X-Download-Options | noopen | |
| Permissions-Policy | camera=(), microphone=(), magnetometer=() | |
| Expect-Staple | max-age=600; report-uri="https://report.ibyznys.cz/Expect-Staple"; preload | |
| Referrer-Policy | strict-origin-when-cross-origin | |
| Cross-Origin-Embedder-Policy | unsafe-none | |
| Cross-Origin-Opener-Policy | same-origin | |
| Cross-Origin-Resource-Policy | same-origin | |
| Strict-Transport-Security | max-age=31536000 | |
| Set-Cookie | __Secure-iBUser=id=18082211213600; expires=Sun, 07-Jun-2026 22:00:00 GMT; path=/; secure; HttpOnly; Priority=High | |
| Set-Cookie | __Secure-iBsession=SWBTCQAR/AFKBJOGCFHGHAPOEECOIDBJB; secure; path=/; HttpOnly; Priority=High | |
| Date | Sun, 08 Jun 2025 16:53:26 GMT | |
| Connection | close | |
| Content-Length | 121193 | |
| Miscellaneous | |
| Test date | Sun, 08 Jun 2025 16:53:14 UTC |
| Test duration | 86.27 seconds |
| HTTP status code | 200 |
| HTTP server signature | - |
| Server hostname | 67.197.forpsi.net |
SSL Report v2.4.0