SSL Report:
p9f.org
(168.235.82.121)
Assessed on: Tue, 20 Jan 2026 09:41:53 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 server is vulnerable to the Return Of Bleichenbacher's Oracle Threat (ROBOT) vulnerability. Grade set to F.
MORE INFO »
There is no support for secure renegotiation.
MORE INFO »
This server does not support Forward Secrecy with the reference browsers.
Grade capped to B.
MORE INFO »
This server does not support Authenticated encryption (AEAD) cipher suites. Grade capped to B.
MORE INFO »
This server's certificate chain is incomplete. Grade capped to B.
This server supports TLS 1.0 and TLS 1.1.
Grade capped to B. MORE INFO »
This server does not support TLS 1.3. MORE INFO »
Certificate #1: RSA 2048 bits (SHA256withRSA)
|
Server Key and Certificate #1
|
|
| Subject |
p9f.org
Fingerprint SHA256: 1c69eaaf97636995642ddba847c8163328486832c6e672e6589bd5c70ea81d9b Pin SHA256: Z87hj9mFSnyQ0L47gTtnO5CW/IXB6T604wDiYyOZM80= |
| Common names | p9f.org |
| Alternative names | *.iwp9.org *.p9f.org *.plan9foundation.org iwp9.org p9f.org plan9foundation.org |
| Serial Number | 0523170f596fddc5b5ae50fa8395194c329a |
| Valid from | Sun, 21 Dec 2025 07:13:44 UTC |
| Valid until | Sat, 21 Mar 2026 07:13:43 UTC (expires in 2 months) |
| 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/27.crl |
| Revocation status | Good (not revoked) |
| DNS CAA | No (more info) |
| Trusted | Yes
Mozilla Apple Android Java Windows |
Certification Paths |
Configuration
| Protocols | |
| TLS 1.3 | No |
| TLS 1.2 | Yes |
| TLS 1.1 | Yes |
| TLS 1.0 | Yes |
| SSL 3 | No |
| SSL 2 | No |
| Cipher Suites | ||
|
# TLS 1.2 (server has no preference)
|
||
TLS_RSA_WITH_AES_128_CBC_SHA (0x2f)
WEAK
|
128 | |
TLS_RSA_WITH_AES_256_CBC_SHA (0x35)
WEAK
|
256 | |
|
# TLS 1.1 (server has no preference)
|
||
TLS_RSA_WITH_3DES_EDE_CBC_SHA (0xa)
WEAK
|
112 | |
TLS_RSA_WITH_AES_128_CBC_SHA (0x2f)
WEAK
|
128 | |
TLS_RSA_WITH_AES_256_CBC_SHA (0x35)
WEAK
|
256 | |
|
# TLS 1.0 (server has no preference)
|
||
TLS_RSA_WITH_3DES_EDE_CBC_SHA (0xa)
WEAK
|
112 | |
TLS_RSA_WITH_AES_128_CBC_SHA (0x2f)
WEAK
|
128 | |
TLS_RSA_WITH_AES_256_CBC_SHA (0x35)
WEAK
|
256 | |
| Handshake Simulation | |||
| Android 2.3.7 No SNI 2 | RSA 2048 (SHA256) | TLS 1.0 | TLS_RSA_WITH_AES_128_CBC_SHA No FS |
| Android 4.0.4 | RSA 2048 (SHA256) | TLS 1.0 | TLS_RSA_WITH_AES_256_CBC_SHA No FS |
| Android 4.1.1 | RSA 2048 (SHA256) | TLS 1.0 | TLS_RSA_WITH_AES_256_CBC_SHA No FS |
| Android 4.2.2 | RSA 2048 (SHA256) | TLS 1.0 | TLS_RSA_WITH_AES_256_CBC_SHA No FS |
| Android 4.3 | RSA 2048 (SHA256) | TLS 1.0 | TLS_RSA_WITH_AES_256_CBC_SHA No FS |
| Android 4.4.2 | RSA 2048 (SHA256) | TLS 1.2 | TLS_RSA_WITH_AES_256_CBC_SHA No FS |
| Android 5.0.0 | RSA 2048 (SHA256) | TLS 1.2 | TLS_RSA_WITH_AES_256_CBC_SHA No FS |
| Android 6.0 | RSA 2048 (SHA256) | TLS 1.2 | TLS_RSA_WITH_AES_256_CBC_SHA No FS |
| Android 7.0 | RSA 2048 (SHA256) | TLS 1.2 | TLS_RSA_WITH_AES_128_CBC_SHA No FS |
| Android 8.0 | RSA 2048 (SHA256) | TLS 1.2 | TLS_RSA_WITH_AES_128_CBC_SHA No FS |
| Android 8.1 | RSA 2048 (SHA256) | TLS 1.2 | TLS_RSA_WITH_AES_128_CBC_SHA No FS |
| Android 9.0 | RSA 2048 (SHA256) | TLS 1.2 | TLS_RSA_WITH_AES_128_CBC_SHA No FS |
| Baidu Jan 2015 | RSA 2048 (SHA256) | TLS 1.0 | TLS_RSA_WITH_AES_256_CBC_SHA No FS |
| BingPreview Jan 2015 | RSA 2048 (SHA256) | TLS 1.2 | TLS_RSA_WITH_AES_256_CBC_SHA No FS |
| Chrome 49 / XP SP3 | RSA 2048 (SHA256) | TLS 1.2 | TLS_RSA_WITH_AES_256_CBC_SHA No FS |
| Chrome 69 / Win 7 R | RSA 2048 (SHA256) | TLS 1.2 | TLS_RSA_WITH_AES_128_CBC_SHA No FS |
| Chrome 70 / Win 10 | RSA 2048 (SHA256) | TLS 1.2 | TLS_RSA_WITH_AES_128_CBC_SHA No FS |
| Chrome 80 / Win 10 R | RSA 2048 (SHA256) | TLS 1.2 | TLS_RSA_WITH_AES_128_CBC_SHA No FS |
| Firefox 31.3.0 ESR / Win 7 | RSA 2048 (SHA256) | TLS 1.2 | TLS_RSA_WITH_AES_128_CBC_SHA No FS |
| Firefox 47 / Win 7 R | RSA 2048 (SHA256) | TLS 1.2 | TLS_RSA_WITH_AES_128_CBC_SHA No FS |
| Firefox 49 / XP SP3 | RSA 2048 (SHA256) | TLS 1.2 | TLS_RSA_WITH_AES_128_CBC_SHA No FS |
| Firefox 62 / Win 7 R | RSA 2048 (SHA256) | TLS 1.2 | TLS_RSA_WITH_AES_128_CBC_SHA No FS |
| Firefox 73 / Win 10 R | RSA 2048 (SHA256) | TLS 1.2 | TLS_RSA_WITH_AES_128_CBC_SHA No FS |
| Googlebot Feb 2018 | RSA 2048 (SHA256) | TLS 1.2 | TLS_RSA_WITH_AES_128_CBC_SHA No FS |
| IE 7 / Vista | RSA 2048 (SHA256) | TLS 1.0 | TLS_RSA_WITH_AES_128_CBC_SHA No FS |
| IE 8 / XP No FS 1 No SNI 2 | RSA 2048 (SHA256) | TLS 1.0 | TLS_RSA_WITH_3DES_EDE_CBC_SHA |
| IE 8-10 / Win 7 R | RSA 2048 (SHA256) | TLS 1.0 | TLS_RSA_WITH_AES_256_CBC_SHA No FS |
| IE 11 / Win 7 R | RSA 2048 (SHA256) | TLS 1.2 | TLS_RSA_WITH_AES_256_CBC_SHA No FS |
| IE 11 / Win 8.1 R | RSA 2048 (SHA256) | TLS 1.2 | TLS_RSA_WITH_AES_256_CBC_SHA No FS |
| IE 10 / Win Phone 8.0 | RSA 2048 (SHA256) | TLS 1.0 | TLS_RSA_WITH_AES_128_CBC_SHA No FS |
| IE 11 / Win Phone 8.1 R | RSA 2048 (SHA256) | TLS 1.2 | TLS_RSA_WITH_AES_128_CBC_SHA No FS |
| IE 11 / Win Phone 8.1 Update R | RSA 2048 (SHA256) | TLS 1.2 | TLS_RSA_WITH_AES_256_CBC_SHA No FS |
| IE 11 / Win 10 R | RSA 2048 (SHA256) | TLS 1.2 | TLS_RSA_WITH_AES_256_CBC_SHA No FS |
| Edge 15 / Win 10 R | RSA 2048 (SHA256) | TLS 1.2 | TLS_RSA_WITH_AES_256_CBC_SHA No FS |
| Edge 16 / Win 10 R | RSA 2048 (SHA256) | TLS 1.2 | TLS_RSA_WITH_AES_256_CBC_SHA No FS |
| Edge 18 / Win 10 R | RSA 2048 (SHA256) | TLS 1.2 | TLS_RSA_WITH_AES_256_CBC_SHA No FS |
| Edge 13 / Win Phone 10 R | RSA 2048 (SHA256) | TLS 1.2 | TLS_RSA_WITH_AES_256_CBC_SHA No FS |
| Java 6u45 No SNI 2 | RSA 2048 (SHA256) | TLS 1.0 | TLS_RSA_WITH_AES_128_CBC_SHA No FS |
| Java 7u25 | RSA 2048 (SHA256) | TLS 1.0 | TLS_RSA_WITH_AES_128_CBC_SHA No FS |
| Java 8u161 | RSA 2048 (SHA256) | TLS 1.2 | TLS_RSA_WITH_AES_256_CBC_SHA No FS |
| Java 11.0.3 | RSA 2048 (SHA256) | TLS 1.2 | TLS_RSA_WITH_AES_256_CBC_SHA No FS |
| Java 12.0.1 | RSA 2048 (SHA256) | TLS 1.2 | TLS_RSA_WITH_AES_256_CBC_SHA No FS |
| OpenSSL 0.9.8y | RSA 2048 (SHA256) | TLS 1.0 | TLS_RSA_WITH_AES_256_CBC_SHA No FS |
| OpenSSL 1.0.1l R | RSA 2048 (SHA256) | TLS 1.2 | TLS_RSA_WITH_AES_256_CBC_SHA No FS |
| OpenSSL 1.0.2s R | RSA 2048 (SHA256) | TLS 1.2 | TLS_RSA_WITH_AES_256_CBC_SHA No FS |
| OpenSSL 1.1.0k R | RSA 2048 (SHA256) | TLS 1.2 | TLS_RSA_WITH_AES_256_CBC_SHA No FS |
| OpenSSL 1.1.1c R | RSA 2048 (SHA256) | TLS 1.2 | TLS_RSA_WITH_AES_256_CBC_SHA No FS |
| Safari 5.1.9 / OS X 10.6.8 | RSA 2048 (SHA256) | TLS 1.0 | TLS_RSA_WITH_AES_128_CBC_SHA No FS |
| Safari 6 / iOS 6.0.1 | RSA 2048 (SHA256) | TLS 1.2 | TLS_RSA_WITH_AES_128_CBC_SHA No FS |
| Safari 6.0.4 / OS X 10.8.4 R | RSA 2048 (SHA256) | TLS 1.0 | TLS_RSA_WITH_AES_128_CBC_SHA No FS |
| Safari 7 / iOS 7.1 R | RSA 2048 (SHA256) | TLS 1.2 | TLS_RSA_WITH_AES_128_CBC_SHA No FS |
| Safari 7 / OS X 10.9 R | RSA 2048 (SHA256) | TLS 1.2 | TLS_RSA_WITH_AES_128_CBC_SHA No FS |
| Safari 8 / iOS 8.4 R | RSA 2048 (SHA256) | TLS 1.2 | TLS_RSA_WITH_AES_256_CBC_SHA No FS |
| Safari 8 / OS X 10.10 R | RSA 2048 (SHA256) | TLS 1.2 | TLS_RSA_WITH_AES_256_CBC_SHA No FS |
| Safari 9 / iOS 9 R | RSA 2048 (SHA256) | TLS 1.2 | TLS_RSA_WITH_AES_256_CBC_SHA No FS |
| Safari 9 / OS X 10.11 R | RSA 2048 (SHA256) | TLS 1.2 | TLS_RSA_WITH_AES_256_CBC_SHA No FS |
| Safari 10 / iOS 10 R | RSA 2048 (SHA256) | TLS 1.2 | TLS_RSA_WITH_AES_256_CBC_SHA No FS |
| Safari 10 / OS X 10.12 R | RSA 2048 (SHA256) | TLS 1.2 | TLS_RSA_WITH_AES_256_CBC_SHA No FS |
| Safari 12.1.2 / MacOS 10.14.6 Beta R | RSA 2048 (SHA256) | TLS 1.2 | TLS_RSA_WITH_AES_256_CBC_SHA No FS |
| Safari 12.1.1 / iOS 12.3.1 R | RSA 2048 (SHA256) | TLS 1.2 | TLS_RSA_WITH_AES_256_CBC_SHA No FS |
| Apple ATS 9 / iOS 9 R |
Server sent fatal alert: handshake_failure |
||
| Yahoo Slurp Jan 2015 | RSA 2048 (SHA256) | TLS 1.2 | TLS_RSA_WITH_AES_256_CBC_SHA No FS |
| YandexBot Jan 2015 | RSA 2048 (SHA256) | TLS 1.2 | TLS_RSA_WITH_AES_256_CBC_SHA No FS |
|
# Not simulated clients (Protocol mismatch)
|
|||
| IE 6 / XP No FS 1 No SNI 2 |
Protocol mismatch (not simulated) |
||
| (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 | |
| Renegotiation | Unknown |
| BEAST attack |
Not mitigated server-side (more info)
TLS 1.0: 0x2f
|
| POODLE (SSLv3) | No, SSL 3 not supported (more info) |
| POODLE (TLS) | No (more info) |
| Zombie POODLE | Unknown (more info) |
| GOLDENDOODLE | Unknown (more info) |
| OpenSSL 0-Length | Unknown (more info) |
| Sleeping POODLE | Unknown (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) | Yes EXPLOITABLE (more info) |
| Forward Secrecy | No WEAK (more info) |
| ALPN | No |
| NPN | No |
| Session resumption (caching) | No (IDs assigned but not accepted) |
| 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) |
| Long handshake intolerance | No |
| TLS extension intolerance | No |
| TLS version intolerance | TLS 2.152 |
| Incorrect SNI alerts | No |
| Uses common DH primes | No, DHE suites not supported |
| DH public server param (Ys) reuse | No, DHE suites not supported |
| ECDH public server param reuse | No, ECDHE suites not supported |
| Supported Named Groups | - |
| SSL 2 handshake compatibility | Yes |
|
HTTP Requests
|
|
1 https://p9f.org/
(HTTP/1.1 200 OK)
| 1 | |
| Server | Plan9 | |
| Date | Tue, 20 Jan 2026 09:39:52 GMT | |
| ETag | "1e21ev25" | |
| Content-Length | 5991 | |
| Last-Modified | Fri, 08 Nov 2024 06:20:46 GMT | |
| Content-Type | text/html | |
| Connection | close | |
| Miscellaneous | |
| Test date | Tue, 20 Jan 2026 09:39:42 UTC |
| Test duration | 131.83 seconds |
| HTTP status code | 200 |
| HTTP server signature | Plan9 |
| Server hostname | 168-235-82-121.cloud.ramnode.com |
SSL Report v2.4.1