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CISS.debian.live.builder/docs/AUDIT_TLS.md
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🛡️ Retrieve DNSSEC status of coresecret.dev. / 🛡️ Retrieve DNSSEC status of coresecret.dev. (push) Has been cancelled
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🛡️ Shell Script Linting / 🛡️ Shell Script Linting (push) Has been cancelled
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V9.14.028.2026.06.18 
Signed-off-by: Marc S. Weidner <msw@coresecret.dev>
2026-06-18 10:49:41 +01:00

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---
gitea: none
include_toc: true
---
# 1. CISS.debian.live.builder
**Centurion Intelligence Consulting Agency Information Security Standard**<br>
*Debian Live Build Generator for hardened live environment and CISS Debian Installer*<br>
**Master Version**: 9.14<br>
**Build**: V9.14.028.2026.06.18<br>
# 2. TLS Audit:
````text
./testssl.sh --show-each --wide --phone-out --full https://git.coresecret.dev/
#####################################################################
testssl.sh version 3.2.3 from https://testssl.sh/
(0ff7a34 2026-06-01 09:45:44)
This program is free software. Distribution and modification under
GPLv2 permitted. USAGE w/o ANY WARRANTY. USE IT AT YOUR OWN RISK!
Please file bugs @ https://testssl.sh/bugs/
#####################################################################
Using OpenSSL 1.0.2-bad (Mar 28 2025) [~179 ciphers]
on kali:./bin/openssl.Linux.x86_64
Start 2026-06-17 14:44:50 -->> 152.53.110.40:443 (git.coresecret.dev) <<--
Further IP addresses: 2a0a:4cc0:80:330f:152:53:110:40
rDNS (152.53.110.40): git.coresecret.dev.
Service detected: HTTP
Testing protocols via sockets except NPN+ALPN
SSLv2 not offered (OK)
SSLv3 not offered (OK)
TLS 1 not offered
TLS 1.1 not offered
TLS 1.2 offered (OK)
TLS 1.3 offered (OK): final
NPN/SPDY not offered
ALPN/HTTP2 h2, http/1.1 (offered)
Testing for server implementation bugs
No bugs found.
Testing cipher categories
NULL ciphers (no encryption) not offered (OK)
Anonymous NULL Ciphers (no authentication) not offered (OK)
Export ciphers (w/o ADH+NULL) not offered (OK)
LOW: 64 Bit + DES, RC[2,4], MD5 (w/o export) not offered (OK)
Triple DES Ciphers / IDEA not offered
Obsoleted CBC ciphers (AES, ARIA etc.) not offered
Strong encryption (AEAD ciphers) with no FS not offered
Forward Secrecy strong encryption (AEAD ciphers) offered (OK)
Testing server's cipher preferences
Hexcode Cipher Suite Name (OpenSSL) KeyExch. Encryption Bits Cipher Suite Name (IANA/RFC)
-----------------------------------------------------------------------------------------------------------------------------
SSLv2
-
SSLv3
-
TLSv1
-
TLSv1.1
-
TLSv1.2 (server order)
xc02c ECDHE-ECDSA-AES256-GCM-SHA384 ECDH 448 AESGCM 256 TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384
xcca9 ECDHE-ECDSA-CHACHA20-POLY1305 ECDH 448 ChaCha20 256 TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256
TLSv1.3 (server order)
x1302 TLS_AES_256_GCM_SHA384 MLKEM1024 AESGCM 256 TLS_AES_256_GCM_SHA384
x1303 TLS_CHACHA20_POLY1305_SHA256 MLKEM1024 ChaCha20 256 TLS_CHACHA20_POLY1305_SHA256
Has server cipher order? yes (OK) -- TLS 1.3 and below
Testing robust forward secrecy (FS) -- omitting Null Authentication/Encryption, 3DES, RC4
FS is offered (OK) , ciphers follow (client/browser support is important here)
Hexcode Cipher Suite Name (OpenSSL) KeyExch. Encryption Bits Cipher Suite Name (IANA/RFC)
-----------------------------------------------------------------------------------------------------------------------------
x1302 TLS_AES_256_GCM_SHA384 MLKEM1024 AESGCM 256 TLS_AES_256_GCM_SHA384 available
x1303 TLS_CHACHA20_POLY1305_SHA256 MLKEM1024 ChaCha20 256 TLS_CHACHA20_POLY1305_SHA256 available
xcc14 ECDHE-ECDSA-CHACHA20-POLY1305-OLD ECDH ChaCha20 256 TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256_OLD not a/v
xcc13 ECDHE-RSA-CHACHA20-POLY1305-OLD ECDH ChaCha20 256 TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256_OLD not a/v
xcc15 DHE-RSA-CHACHA20-POLY1305-OLD DH ChaCha20 256 TLS_DHE_RSA_WITH_CHACHA20_POLY1305_SHA256_OLD not a/v
xc030 ECDHE-RSA-AES256-GCM-SHA384 ECDH AESGCM 256 TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 not a/v
xc02c ECDHE-ECDSA-AES256-GCM-SHA384 ECDH 521 AESGCM 256 TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384 available
xc028 ECDHE-RSA-AES256-SHA384 ECDH AES 256 TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384 not a/v
xc024 ECDHE-ECDSA-AES256-SHA384 ECDH AES 256 TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384 not a/v
xc014 ECDHE-RSA-AES256-SHA ECDH AES 256 TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA not a/v
xc00a ECDHE-ECDSA-AES256-SHA ECDH AES 256 TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA not a/v
xa3 DHE-DSS-AES256-GCM-SHA384 DH AESGCM 256 TLS_DHE_DSS_WITH_AES_256_GCM_SHA384 not a/v
x9f DHE-RSA-AES256-GCM-SHA384 DH AESGCM 256 TLS_DHE_RSA_WITH_AES_256_GCM_SHA384 not a/v
xcca9 ECDHE-ECDSA-CHACHA20-POLY1305 ECDH 448 ChaCha20 256 TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256 available
xcca8 ECDHE-RSA-CHACHA20-POLY1305 ECDH ChaCha20 256 TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256 not a/v
xccaa DHE-RSA-CHACHA20-POLY1305 DH ChaCha20 256 TLS_DHE_RSA_WITH_CHACHA20_POLY1305_SHA256 not a/v
xc0af ECDHE-ECDSA-AES256-CCM8 ECDH AESCCM8 256 TLS_ECDHE_ECDSA_WITH_AES_256_CCM_8 not a/v
xc0ad ECDHE-ECDSA-AES256-CCM ECDH AESCCM 256 TLS_ECDHE_ECDSA_WITH_AES_256_CCM not a/v
xc0a3 DHE-RSA-AES256-CCM8 DH AESCCM8 256 TLS_DHE_RSA_WITH_AES_256_CCM_8 not a/v
xc09f DHE-RSA-AES256-CCM DH AESCCM 256 TLS_DHE_RSA_WITH_AES_256_CCM not a/v
x6b DHE-RSA-AES256-SHA256 DH AES 256 TLS_DHE_RSA_WITH_AES_256_CBC_SHA256 not a/v
x6a DHE-DSS-AES256-SHA256 DH AES 256 TLS_DHE_DSS_WITH_AES_256_CBC_SHA256 not a/v
x39 DHE-RSA-AES256-SHA DH AES 256 TLS_DHE_RSA_WITH_AES_256_CBC_SHA not a/v
x38 DHE-DSS-AES256-SHA DH AES 256 TLS_DHE_DSS_WITH_AES_256_CBC_SHA not a/v
xc077 ECDHE-RSA-CAMELLIA256-SHA384 ECDH Camellia 256 TLS_ECDHE_RSA_WITH_CAMELLIA_256_CBC_SHA384 not a/v
xc073 ECDHE-ECDSA-CAMELLIA256-SHA384 ECDH Camellia 256 TLS_ECDHE_ECDSA_WITH_CAMELLIA_256_CBC_SHA384 not a/v
xc4 DHE-RSA-CAMELLIA256-SHA256 DH Camellia 256 TLS_DHE_RSA_WITH_CAMELLIA_256_CBC_SHA256 not a/v
xc3 DHE-DSS-CAMELLIA256-SHA256 DH Camellia 256 TLS_DHE_DSS_WITH_CAMELLIA_256_CBC_SHA256 not a/v
x88 DHE-RSA-CAMELLIA256-SHA DH Camellia 256 TLS_DHE_RSA_WITH_CAMELLIA_256_CBC_SHA not a/v
x87 DHE-DSS-CAMELLIA256-SHA DH Camellia 256 TLS_DHE_DSS_WITH_CAMELLIA_256_CBC_SHA not a/v
xc043 DHE-DSS-ARIA256-CBC-SHA384 DH ARIA 256 TLS_DHE_DSS_WITH_ARIA_256_CBC_SHA384 not a/v
xc045 DHE-RSA-ARIA256-CBC-SHA384 DH ARIA 256 TLS_DHE_RSA_WITH_ARIA_256_CBC_SHA384 not a/v
xc049 ECDHE-ECDSA-ARIA256-CBC-SHA384 ECDH ARIA 256 TLS_ECDHE_ECDSA_WITH_ARIA_256_CBC_SHA384 not a/v
xc04d ECDHE-RSA-ARIA256-CBC-SHA384 ECDH ARIA 256 TLS_ECDHE_RSA_WITH_ARIA_256_CBC_SHA384 not a/v
xc053 DHE-RSA-ARIA256-GCM-SHA384 DH ARIAGCM 256 TLS_DHE_RSA_WITH_ARIA_256_GCM_SHA384 not a/v
xc057 DHE-DSS-ARIA256-GCM-SHA384 DH ARIAGCM 256 TLS_DHE_DSS_WITH_ARIA_256_GCM_SHA384 not a/v
xc05d ECDHE-ECDSA-ARIA256-GCM-SHA384 ECDH ARIAGCM 256 TLS_ECDHE_ECDSA_WITH_ARIA_256_GCM_SHA384 not a/v
xc061 ECDHE-ARIA256-GCM-SHA384 ECDH ARIAGCM 256 TLS_ECDHE_RSA_WITH_ARIA_256_GCM_SHA384 not a/v
xc07d - DH CamelliaGCM 256 TLS_DHE_RSA_WITH_CAMELLIA_256_GCM_SHA384 not a/v
xc081 - DH CamelliaGCM 256 TLS_DHE_DSS_WITH_CAMELLIA_256_GCM_SHA384 not a/v
xc087 - ECDH CamelliaGCM 256 TLS_ECDHE_ECDSA_WITH_CAMELLIA_256_GCM_SHA384 not a/v
xc08b - ECDH CamelliaGCM 256 TLS_ECDHE_RSA_WITH_CAMELLIA_256_GCM_SHA384 not a/v
x1301 TLS_AES_128_GCM_SHA256 any AESGCM 128 TLS_AES_128_GCM_SHA256 not a/v
x1304 TLS_AES_128_CCM_SHA256 any AESCCM 128 TLS_AES_128_CCM_SHA256 not a/v
x1305 TLS_AES_128_CCM_8_SHA256 any AESCCM8 128 TLS_AES_128_CCM_8_SHA256 not a/v
xc02f ECDHE-RSA-AES128-GCM-SHA256 ECDH AESGCM 128 TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 not a/v
xc02b ECDHE-ECDSA-AES128-GCM-SHA256 ECDH AESGCM 128 TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 not a/v
xc027 ECDHE-RSA-AES128-SHA256 ECDH AES 128 TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256 not a/v
xc023 ECDHE-ECDSA-AES128-SHA256 ECDH AES 128 TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256 not a/v
xc013 ECDHE-RSA-AES128-SHA ECDH AES 128 TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA not a/v
xc009 ECDHE-ECDSA-AES128-SHA ECDH AES 128 TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA not a/v
xa2 DHE-DSS-AES128-GCM-SHA256 DH AESGCM 128 TLS_DHE_DSS_WITH_AES_128_GCM_SHA256 not a/v
x9e DHE-RSA-AES128-GCM-SHA256 DH AESGCM 128 TLS_DHE_RSA_WITH_AES_128_GCM_SHA256 not a/v
xc0ae ECDHE-ECDSA-AES128-CCM8 ECDH AESCCM8 128 TLS_ECDHE_ECDSA_WITH_AES_128_CCM_8 not a/v
xc0ac ECDHE-ECDSA-AES128-CCM ECDH AESCCM 128 TLS_ECDHE_ECDSA_WITH_AES_128_CCM not a/v
xc0a2 DHE-RSA-AES128-CCM8 DH AESCCM8 128 TLS_DHE_RSA_WITH_AES_128_CCM_8 not a/v
xc09e DHE-RSA-AES128-CCM DH AESCCM 128 TLS_DHE_RSA_WITH_AES_128_CCM not a/v
x67 DHE-RSA-AES128-SHA256 DH AES 128 TLS_DHE_RSA_WITH_AES_128_CBC_SHA256 not a/v
x40 DHE-DSS-AES128-SHA256 DH AES 128 TLS_DHE_DSS_WITH_AES_128_CBC_SHA256 not a/v
x33 DHE-RSA-AES128-SHA DH AES 128 TLS_DHE_RSA_WITH_AES_128_CBC_SHA not a/v
x32 DHE-DSS-AES128-SHA DH AES 128 TLS_DHE_DSS_WITH_AES_128_CBC_SHA not a/v
xc076 ECDHE-RSA-CAMELLIA128-SHA256 ECDH Camellia 128 TLS_ECDHE_RSA_WITH_CAMELLIA_128_CBC_SHA256 not a/v
xc072 ECDHE-ECDSA-CAMELLIA128-SHA256 ECDH Camellia 128 TLS_ECDHE_ECDSA_WITH_CAMELLIA_128_CBC_SHA256 not a/v
xbe DHE-RSA-CAMELLIA128-SHA256 DH Camellia 128 TLS_DHE_RSA_WITH_CAMELLIA_128_CBC_SHA256 not a/v
xbd DHE-DSS-CAMELLIA128-SHA256 DH Camellia 128 TLS_DHE_DSS_WITH_CAMELLIA_128_CBC_SHA256 not a/v
x9a DHE-RSA-SEED-SHA DH SEED 128 TLS_DHE_RSA_WITH_SEED_CBC_SHA not a/v
x99 DHE-DSS-SEED-SHA DH SEED 128 TLS_DHE_DSS_WITH_SEED_CBC_SHA not a/v
x45 DHE-RSA-CAMELLIA128-SHA DH Camellia 128 TLS_DHE_RSA_WITH_CAMELLIA_128_CBC_SHA not a/v
x44 DHE-DSS-CAMELLIA128-SHA DH Camellia 128 TLS_DHE_DSS_WITH_CAMELLIA_128_CBC_SHA not a/v
xc042 DHE-DSS-ARIA128-CBC-SHA256 DH ARIA 128 TLS_DHE_DSS_WITH_ARIA_128_CBC_SHA256 not a/v
xc044 DHE-RSA-ARIA128-CBC-SHA256 DH ARIA 128 TLS_DHE_RSA_WITH_ARIA_128_CBC_SHA256 not a/v
xc048 ECDHE-ECDSA-ARIA128-CBC-SHA256 ECDH ARIA 128 TLS_ECDHE_ECDSA_WITH_ARIA_128_CBC_SHA256 not a/v
xc04c ECDHE-RSA-ARIA128-CBC-SHA256 ECDH ARIA 128 TLS_ECDHE_RSA_WITH_ARIA_128_CBC_SHA256 not a/v
xc052 DHE-RSA-ARIA128-GCM-SHA256 DH ARIAGCM 128 TLS_DHE_RSA_WITH_ARIA_128_GCM_SHA256 not a/v
xc056 DHE-DSS-ARIA128-GCM-SHA256 DH ARIAGCM 128 TLS_DHE_DSS_WITH_ARIA_128_GCM_SHA256 not a/v
xc05c ECDHE-ECDSA-ARIA128-GCM-SHA256 ECDH ARIAGCM 128 TLS_ECDHE_ECDSA_WITH_ARIA_128_GCM_SHA256 not a/v
xc060 ECDHE-ARIA128-GCM-SHA256 ECDH ARIAGCM 128 TLS_ECDHE_RSA_WITH_ARIA_128_GCM_SHA256 not a/v
xc07c - DH CamelliaGCM 128 TLS_DHE_RSA_WITH_CAMELLIA_128_GCM_SHA256 not a/v
xc080 - DH CamelliaGCM 128 TLS_DHE_DSS_WITH_CAMELLIA_128_GCM_SHA256 not a/v
xc086 - ECDH CamelliaGCM 128 TLS_ECDHE_ECDSA_WITH_CAMELLIA_128_GCM_SHA256 not a/v
xc08a - ECDH CamelliaGCM 128 TLS_ECDHE_RSA_WITH_CAMELLIA_128_GCM_SHA256 not a/v
KEMs offered MLKEM1024 X25519MLKEM768 SecP384r1MLKEM1024
Elliptic curves offered: secp384r1 secp521r1 X448
TLS 1.2 sig_algs offered: ECDSA+SHA256 ECDSA+SHA384 ECDSA+SHA512 ECDSA+SHA224
TLS 1.3 sig_algs offered: ECDSA+SHA384
Testing server defaults (Server Hello)
TLS extensions (standard) "server name/#0" "max fragment length/#1" "status request/#5" "supported_groups/#10" "EC point formats/#11"
"application layer protocol negotiation/#16" "extended master secret/#23" "supported versions/#43" "key share/#51"
"renegotiation info/#65281"
Session Ticket RFC 5077 hint no -- no lifetime advertised
SSL Session ID support yes
Session Resumption Tickets no, ID: yes
TLS clock skew Random values, no fingerprinting possible
Certificate Compression none
Client Authentication none
Signature Algorithm ECDSA with SHA256
Server key size EC 384 bits (curve P-384)
Server key usage Digital Signature
Server extended key usage TLS Web Server Authentication
Serial 85135AE9A772A9778768548CDED9F483 (OK: length 16)
Fingerprints SHA1 7745E895B49A44DA786509D124F7BAEF5BCDE21A
SHA256 EBAC1DAD82CFAF97644D2F9A03082DE9ABC2B44AD4C86FE6FA202D3EF7243FE4
Common Name (CN) coresecret.dev
subjectAltName (SAN) coresecret.dev badges.coresecret.dev cendev.eu git.coresecret.dev lab.coresecret.dev phpmyadmin.git.coresecret.dev
run.coresecret.dev uml.coresecret.dev www.coresecret.dev
Trust (hostname) Ok via SAN (same w/o SNI)
Chain of trust Ok
EV cert (experimental) no
Certificate Validity (UTC) 89 >= 60 days (2026-06-16 00:00 --> 2026-09-14 23:59)
ETS/"eTLS", visibility info not present
In pwnedkeys.com DB not in database
Certificate Revocation List --
OCSP URI http://ocsp.sectigo.com, not revoked
OCSP stapling offered, not revoked
OCSP must staple extension supported
DNS CAA RR (experimental) available - please check for match with "Issuer" below
contactemail=caa@coresecret.eu, iodef=mailto:caa@coresecret.eu, issue=;, issue=certum.pl, issue=letsencrypt.org;,
issue=quantumsign.eu;, issue=sectigo.com, issuemail=certum.pl, issuevmc=sectigo.com, issuewild=;
Certificate Transparency yes (certificate extension)
Certificates provided 2
Issuer ZeroSSL ECC DV SSL CA 2 (ZeroSSL GmbH from AT)
Intermediate cert validity #1: ok > 40 days (2035-09-23 23:59). ZeroSSL ECC DV SSL CA 2 <-- Sectigo Public Server Authentication Root E46
Intermediate Bad OCSP (exp.) Ok
Testing HTTP header response @ "/"
HTTP Status Code 200 OK
HTTP clock skew 0 sec from localtime
Strict Transport Security 730 days=63072000 s, includeSubDomains, preload
Public Key Pinning --
Server banner nginx
Application banner --
Cookie(s) 1 issued: 1/1 secure, 1/1 HttpOnly
Security headers X-Frame-Options: SAMEORIGIN
X-Content-Type-Options: nosniff
Content-Security-Policy: default-src 'self'; connect-src 'self'; font-src 'self' data:; form-action 'self'
git.coresecret.dev; frame-src 'self'; frame-ancestors 'self'; img-src 'self' data: https://badges.coresecret.dev
https://uml.coresecret.dev; manifest-src 'self' data:; media-src 'self' data: https://badges.coresecret.dev
https://uml.coresecret.dev; script-src 'self' 'unsafe-inline'; style-src 'self' 'unsafe-inline'; base-uri 'none';
Expect-CT: max-age=86400, enforce
Permissions-Policy: interest-cohort=()
Cross-Origin-Opener-Policy: cross-origin
Cross-Origin-Resource-Policy: cross-origin
Cross-Origin-Embedder-Policy: unsafe-none
X-XSS-Protection: 1; mode=block
Referrer-Policy: no-referrer
Cache-Control: no-cache
Reverse Proxy banner --
Testing vulnerabilities
Heartbleed (CVE-2014-0160) not vulnerable (OK), no heartbeat extension
CCS (CVE-2014-0224) not vulnerable (OK)
Ticketbleed (CVE-2016-9244), experiment. not vulnerable (OK), no session ticket extension
ROBOT Server does not support any cipher suites that use RSA key transport
Secure Renegotiation (RFC 5746) supported (OK)
Secure Client-Initiated Renegotiation not vulnerable (OK)
CRIME, TLS (CVE-2012-4929) not vulnerable (OK)
BREACH (CVE-2013-3587) no gzip/deflate/compress/br HTTP compression (OK) - only supplied "/" tested
POODLE, SSL (CVE-2014-3566) not vulnerable (OK), no SSLv3 support
TLS_FALLBACK_SCSV (RFC 7507) No fallback possible (OK), no protocol below TLS 1.2 offered
SWEET32 (CVE-2016-2183, CVE-2016-6329) not vulnerable (OK)
FREAK (CVE-2015-0204) not vulnerable (OK)
DROWN (CVE-2016-0800, CVE-2016-0703) not vulnerable on this host and port (OK)
no RSA certificate, thus certificate can't be used with SSLv2 elsewhere
LOGJAM (CVE-2015-4000), experimental not vulnerable (OK): no DH EXPORT ciphers, no DH key detected with <= TLS 1.2
BEAST (CVE-2011-3389) not vulnerable (OK), no SSL3 or TLS1
LUCKY13 (CVE-2013-0169), experimental not vulnerable (OK)
Winshock (CVE-2014-6321), experimental not vulnerable (OK)
RC4 (CVE-2013-2566, CVE-2015-2808) no RC4 ciphers detected (OK)
Running client simulations (HTTP) via sockets
Browser Protocol Cipher Suite Name (OpenSSL) Forward Secrecy
------------------------------------------------------------------------------------------------
Android 7.0 (native) No connection
Android 8.1 (native) TLSv1.2 ECDHE-ECDSA-AES256-GCM-SHA384 384 bit ECDH (P-384)
Android 9.0 (native) TLSv1.3 TLS_AES_256_GCM_SHA384 384 bit ECDH (P-384)
Android 10.0 (native) TLSv1.3 TLS_AES_256_GCM_SHA384 384 bit ECDH (P-384)
Android 11/12 (native) TLSv1.3 TLS_AES_256_GCM_SHA384 384 bit ECDH (P-384)
Android 13/14 (native) TLSv1.3 TLS_AES_256_GCM_SHA384 384 bit ECDH (P-384)
Android 15 (native) TLSv1.3 TLS_AES_256_GCM_SHA384 X25519MLKEM768
Chrome 101 (Win 10) TLSv1.3 TLS_AES_256_GCM_SHA384 384 bit ECDH (P-384)
Chromium 137 (Win 11) TLSv1.3 TLS_AES_256_GCM_SHA384 X25519MLKEM768
Firefox 100 (Win 10) TLSv1.3 TLS_AES_256_GCM_SHA384 521 bit ECDH (P-521)
Firefox 137 (Win 11) TLSv1.3 TLS_AES_256_GCM_SHA384 X25519MLKEM768
IE 8 Win 7 No connection
IE 11 Win 7 TLSv1.2 ECDHE-ECDSA-AES256-GCM-SHA384 384 bit ECDH (P-384)
IE 11 Win 8.1 TLSv1.2 ECDHE-ECDSA-AES256-GCM-SHA384 384 bit ECDH (P-384)
IE 11 Win Phone 8.1 TLSv1.2 ECDHE-ECDSA-AES256-GCM-SHA384 384 bit ECDH (P-384)
IE 11 Win 10 TLSv1.2 ECDHE-ECDSA-AES256-GCM-SHA384 384 bit ECDH (P-384)
Edge 15 Win 10 TLSv1.2 ECDHE-ECDSA-AES256-GCM-SHA384 384 bit ECDH (P-384)
Edge 101 Win 10 21H2 TLSv1.3 TLS_AES_256_GCM_SHA384 384 bit ECDH (P-384)
Edge 133 Win 11 23H2 TLSv1.3 TLS_AES_256_GCM_SHA384 X25519MLKEM768
Safari 18.4 (iOS 18.4) TLSv1.3 TLS_AES_256_GCM_SHA384 521 bit ECDH (P-521)
Safari 15.4 (macOS 12.3.1) TLSv1.3 TLS_AES_256_GCM_SHA384 521 bit ECDH (P-521)
Safari 18.4 (macOS 15.4) TLSv1.3 TLS_AES_256_GCM_SHA384 521 bit ECDH (P-521)
Java 7u25 No connection
Java 8u442 (OpenJDK) TLSv1.3 TLS_AES_256_GCM_SHA384 448 bit ECDH (X448)
Java 11.0.2 (OpenJDK) TLSv1.3 TLS_AES_256_GCM_SHA384 521 bit ECDH (P-521)
Java 17.0.3 (OpenJDK) TLSv1.3 TLS_AES_256_GCM_SHA384 448 bit ECDH (X448)
Java 21.0.6 (OpenJDK) TLSv1.3 TLS_AES_256_GCM_SHA384 448 bit ECDH (X448)
go 1.17.8 TLSv1.3 TLS_AES_256_GCM_SHA384 521 bit ECDH (P-521)
LibreSSL 3.3.6 (macOS) TLSv1.3 TLS_AES_256_GCM_SHA384 521 bit ECDH (P-521)
OpenSSL 1.0.2e TLSv1.2 ECDHE-ECDSA-AES256-GCM-SHA384 521 bit ECDH (P-521)
OpenSSL 1.1.1d (Debian) TLSv1.3 TLS_AES_256_GCM_SHA384 448 bit ECDH (X448)
OpenSSL 3.0.15 (Debian) TLSv1.3 TLS_AES_256_GCM_SHA384 448 bit ECDH (X448)
OpenSSL 3.5.0 (git) TLSv1.3 TLS_AES_256_GCM_SHA384 X25519MLKEM768
Apple Mail (16.0) TLSv1.2 ECDHE-ECDSA-AES256-GCM-SHA384 521 bit ECDH (P-521)
Thunderbird (91.9) TLSv1.3 TLS_AES_256_GCM_SHA384 521 bit ECDH (P-521)
Rating (experimental)
Rating specs (not complete) SSL Labs's 'SSL Server Rating Guide' (version 2009r from 2025-05-16)
Specification documentation https://github.com/ssllabs/research/wiki/SSL-Server-Rating-Guide
Protocol Support (weighted) 100 (30)
Key Exchange (weighted) 100 (30)
Cipher Strength (weighted) 100 (40)
Final Score 100
Overall Grade A+
Done 2026-06-17 14:46:05 [ 78s] -->> 152.53.110.40:443 (git.coresecret.dev) <<--
````
---
**[no tracking | no logging | no advertising | no profiling | no bullshit](https://coresecret.eu/)**
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