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
# 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
# TLS 1.2 (suites in server-preferred order)
TLS_RSA_WITH_AES_256_GCM_SHA384 (0x9d)   WEAK	256
TLS_RSA_WITH_AES_256_CBC_SHA256 (0x3d)   WEAK	256
TLS_RSA_WITH_AES_256_CBC_SHA (0x35)   WEAK	256
TLS_RSA_WITH_AES_128_GCM_SHA256 (0x9c)   WEAK	128
TLS_RSA_WITH_AES_128_CBC_SHA256 (0x3c)   WEAK	128
TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (0xc030)   ECDH secp521r1 (eq. 15360 bits RSA)   FS	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_CBC_SHA (0xc014)   ECDH secp521r1 (eq. 15360 bits RSA)   FS   WEAK	256
TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 (0xc02f)   ECDH secp521r1 (eq. 15360 bits RSA)   FS	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_CBC_SHA (0xc013)   ECDH secp521r1 (eq. 15360 bits RSA)   FS   WEAK	128
TLS_RSA_WITH_AES_128_CBC_SHA (0x2f)   WEAK	128
TLS_DHE_RSA_WITH_CHACHA20_POLY1305_SHA256 (0xccaa)   DH 1024 bits   FS   WEAK	256
TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256 (0xcca8)   ECDH secp521r1 (eq. 15360 bits RSA)   FS	256

Handshake Simulation
Android 4.4.2	RSA 2048 (SHA256)	TLS 1.2	TLS_RSA_WITH_AES_256_GCM_SHA384  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_256_GCM_SHA384  No FS
Android 8.0	RSA 2048 (SHA256)	TLS 1.2	TLS_RSA_WITH_AES_256_GCM_SHA384  No FS
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
BingPreview Jan 2015	RSA 2048 (SHA256)	TLS 1.2	TLS_RSA_WITH_AES_256_GCM_SHA384  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_256_GCM_SHA384  No FS
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 31.3.0 ESR / Win 7	RSA 2048 (SHA256)	TLS 1.2	TLS_RSA_WITH_AES_256_CBC_SHA  No FS
Firefox 47 / Win 7  R	RSA 2048 (SHA256)	TLS 1.2	TLS_RSA_WITH_AES_256_CBC_SHA  No FS
Firefox 49 / XP SP3	RSA 2048 (SHA256)	TLS 1.2	TLS_RSA_WITH_AES_256_CBC_SHA  No FS
Firefox 62 / Win 7  R	RSA 2048 (SHA256)	TLS 1.2	TLS_RSA_WITH_AES_256_CBC_SHA  No FS
Firefox 73 / Win 10  R	-	TLS 1.3	TLS_AES_256_GCM_SHA384   ECDH x25519  FS
Googlebot Feb 2018	RSA 2048 (SHA256)	TLS 1.2	TLS_RSA_WITH_AES_256_GCM_SHA384  No FS
IE 11 / Win 7  R	RSA 2048 (SHA256)	TLS 1.2	TLS_RSA_WITH_AES_256_GCM_SHA384  No FS
IE 11 / Win 8.1  R	RSA 2048 (SHA256)	TLS 1.2	TLS_RSA_WITH_AES_256_GCM_SHA384  No FS
IE 11 / Win Phone 8.1  R	RSA 2048 (SHA256)	TLS 1.2	TLS_RSA_WITH_AES_256_CBC_SHA256  No FS
IE 11 / Win Phone 8.1 Update  R	RSA 2048 (SHA256)	TLS 1.2	TLS_RSA_WITH_AES_256_GCM_SHA384  No FS
IE 11 / Win 10  R	RSA 2048 (SHA256)	TLS 1.2	TLS_RSA_WITH_AES_256_GCM_SHA384  No FS
Edge 15 / Win 10  R	RSA 2048 (SHA256)	TLS 1.2	TLS_RSA_WITH_AES_256_GCM_SHA384  No FS
Edge 16 / Win 10  R	RSA 2048 (SHA256)	TLS 1.2	TLS_RSA_WITH_AES_256_GCM_SHA384  No FS
Edge 18 / Win 10  R	RSA 2048 (SHA256)	TLS 1.2	TLS_RSA_WITH_AES_256_GCM_SHA384  No FS
Edge 13 / Win Phone 10  R	RSA 2048 (SHA256)	TLS 1.2	TLS_RSA_WITH_AES_256_GCM_SHA384  No FS
Java 8u161	RSA 2048 (SHA256)	TLS 1.2	TLS_RSA_WITH_AES_256_GCM_SHA384  No 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 1.0.1l  R	RSA 2048 (SHA256)	TLS 1.2	TLS_RSA_WITH_AES_256_GCM_SHA384  No FS
OpenSSL 1.0.2s  R	RSA 2048 (SHA256)	TLS 1.2	TLS_RSA_WITH_AES_256_GCM_SHA384  No FS
OpenSSL 1.1.0k  R	RSA 2048 (SHA256)	TLS 1.2	TLS_RSA_WITH_AES_256_GCM_SHA384  No 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_RSA_WITH_AES_256_CBC_SHA256  No FS
Safari 7 / iOS 7.1  R	RSA 2048 (SHA256)	TLS 1.2	TLS_RSA_WITH_AES_256_CBC_SHA256  No FS
Safari 7 / OS X 10.9  R	RSA 2048 (SHA256)	TLS 1.2	TLS_RSA_WITH_AES_256_CBC_SHA256  No FS
Safari 8 / iOS 8.4  R	RSA 2048 (SHA256)	TLS 1.2	TLS_RSA_WITH_AES_256_CBC_SHA256  No FS
Safari 8 / OS X 10.10  R	RSA 2048 (SHA256)	TLS 1.2	TLS_RSA_WITH_AES_256_CBC_SHA256  No FS
Safari 9 / iOS 9  R	RSA 2048 (SHA256)	TLS 1.2	TLS_RSA_WITH_AES_256_GCM_SHA384  No FS
Safari 9 / OS X 10.11  R	RSA 2048 (SHA256)	TLS 1.2	TLS_RSA_WITH_AES_256_GCM_SHA384  No FS
Safari 10 / iOS 10  R	RSA 2048 (SHA256)	TLS 1.2	TLS_RSA_WITH_AES_256_GCM_SHA384  No FS
Safari 10 / OS X 10.12  R	RSA 2048 (SHA256)	TLS 1.2	TLS_RSA_WITH_AES_256_GCM_SHA384  No 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
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_RSA_WITH_AES_256_GCM_SHA384  No FS
YandexBot Jan 2015	RSA 2048 (SHA256)	TLS 1.2	TLS_RSA_WITH_AES_256_GCM_SHA384  No 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)
Baidu Jan 2015	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 10 / Win Phone 8.0	Protocol mismatch (not simulated)
Java 6u45   No SNI 2	Protocol mismatch (not simulated)
Java 7u25	Protocol mismatch (not simulated)
OpenSSL 0.9.8y	Protocol mismatch (not simulated)
Safari 5.1.9 / OS X 10.6.8	Protocol mismatch (not simulated)
Safari 6.0.4 / OS X 10.8.4  R	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
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 : 0x0035
GOLDENDOODLE	No (more info)   TLS 1.2 : 0x0035
OpenSSL 0-Length	No (more info)   TLS 1.2 : 0x0035
Sleeping POODLE	No (more info)   TLS 1.2 : 0x0035
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	Weak key exchange   WEAK
ALPN	No
NPN	No
Session resumption (caching)	No (IDs assigned but not accepted)
Session resumption (tickets)	Yes
OCSP stapling	No
Strict Transport Security (HSTS)	Yes max-age=31536000; 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)
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	Test failed

HTTP Requests

1 https://ftp.bit-online.de/  (HTTP/1.0 302 Redirect)
1
	Set-Cookie	currentAuth=6e9v; path=/; secure; SameSite=None
	Set-Cookie	CrushAuth=1755478962827_xoQSEZA3XgJ3PzC7JAQcr6UBRG6e9v; path=/; secure; SameSite=None; HttpOnly
	Date	Mon, 18 Aug 2025 01:02:42 GMT
	Server	CrushFTP HTTP Server
	P3P	policyref="/WebInterface/w3c/p3p.xml", CP="IDC DSP COR ADM DEVi TAIi PSA PSD IVAi IVDi CONi HIS OUR IND CNT"
	Content-Security-Policy	default-src 'self' data: 'unsafe-inline' 'unsafe-eval' *;
	Strict-Transport-Security	max-age=31536000; preload
	Referrer-Policy	no-referrer-when-downgrade
	X-Content-Type-Options	nosniff
	X-XSS-Protection	1; mode=block
	Access-Control-Allow-Origin	false
	Access-Control-Allow-Headers	authorization,content-type,x-transfersegment
	Access-Control-Allow-Credentials	true
	Access-Control-Max-Age	600
	Access-Control-Allow-Methods	GET,POST,OPTIONS,PUT,PROPFIND,DELETE,MKCOL,MOVE,COPY,HEAD,PROPPATCH,LOCK,UNLOCK,ACL,TR
	Connection	close
	Pragma	no-cache
	location	/WebInterface/login.html
	Content-Length	0

2 https://ftp.bit-online.de/WebInterface/login.html  (HTTP/1.1 200 OK)
2
	Date	Mon, 18 Aug 2025 01:02:43 GMT
	Server	CrushFTP HTTP Server
	P3P	policyref="/WebInterface/w3c/p3p.xml", CP="IDC DSP COR ADM DEVi TAIi PSA PSD IVAi IVDi CONi HIS OUR IND CNT"
	Content-Security-Policy	default-src 'self' data: 'unsafe-inline' 'unsafe-eval' *;
	Strict-Transport-Security	max-age=31536000; preload
	Referrer-Policy	no-referrer-when-downgrade
	X-Content-Type-Options	nosniff
	X-XSS-Protection	1; mode=block
	Access-Control-Allow-Origin	false
	Access-Control-Allow-Headers	authorization,content-type,x-transfersegment
	Access-Control-Allow-Credentials	true
	Access-Control-Max-Age	600
	Access-Control-Allow-Methods	GET,POST,OPTIONS,PUT,PROPFIND,DELETE,MKCOL,MOVE,COPY,HEAD,PROPPATCH,LOCK,UNLOCK,ACL,TR
	Keep-Alive	timeout=15, max=20
	Connection	Keep-Alive
	Pragma	no-cache
	Content-type	text/html; charset=UTF-8
	Last-Modified	Wed, 25 Sep 2024 03:47:48 GMT
	ETag	1727236068000
	X-UA-Compatible	chrome=1
	Accept-Ranges	bytes
	Content-Length	16552

Miscellaneous
Test date	Mon, 18 Aug 2025 01:02:31 UTC
Test duration	145.197 seconds
HTTP status code	200
HTTP server signature	CrushFTP HTTP Server
Server hostname	-