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 secp256r1 (eq. 3072 bits RSA)   FS	256
TLS_CHACHA20_POLY1305_SHA256 (0x1303)   ECDH secp256r1 (eq. 3072 bits RSA)   FS	256
TLS_AES_128_GCM_SHA256 (0x1301)   ECDH secp256r1 (eq. 3072 bits RSA)   FS	128
# TLS 1.2 (suites in server-preferred order)
TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (0xc030)   ECDH secp256r1 (eq. 3072 bits RSA)   FS	256
TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 (0xc02f)   ECDH secp256r1 (eq. 3072 bits RSA)   FS	128
TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384 (0xc028)   ECDH secp256r1 (eq. 3072 bits RSA)   FS   WEAK	256
TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256 (0xc027)   ECDH secp256r1 (eq. 3072 bits RSA)   FS   WEAK	128

Handshake Simulation
Android 4.4.2	RSA 2048 (SHA256)	TLS 1.2	TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH secp256r1  FS
Android 5.0.0	RSA 2048 (SHA256)	TLS 1.2	TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256   ECDH secp256r1  FS
Android 6.0	RSA 2048 (SHA256)	TLS 1.2	TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256   ECDH secp256r1  FS
Android 7.0	RSA 2048 (SHA256)	TLS 1.2	TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH secp256r1  FS
Android 8.0	RSA 2048 (SHA256)	TLS 1.2	TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH secp256r1  FS
Android 8.1	-	TLS 1.3	TLS_AES_256_GCM_SHA384   ECDH secp256r1  FS
Android 9.0	-	TLS 1.3	TLS_AES_256_GCM_SHA384   ECDH secp256r1  FS
BingPreview Jan 2015	RSA 2048 (SHA256)	TLS 1.2	TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH secp256r1  FS
Chrome 49 / XP SP3	RSA 2048 (SHA256)	TLS 1.2	TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256   ECDH secp256r1  FS
Chrome 69 / Win 7  R	RSA 2048 (SHA256)	TLS 1.2	TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH secp256r1  FS
Chrome 70 / Win 10	-	TLS 1.3	TLS_AES_256_GCM_SHA384   ECDH secp256r1  FS
Chrome 80 / Win 10  R	-	TLS 1.3	TLS_AES_256_GCM_SHA384   ECDH secp256r1  FS
Firefox 31.3.0 ESR / Win 7	RSA 2048 (SHA256)	TLS 1.2	TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256   ECDH secp256r1  FS
Firefox 47 / Win 7  R	RSA 2048 (SHA256)	TLS 1.2	TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256   ECDH secp256r1  FS
Firefox 49 / XP SP3	RSA 2048 (SHA256)	TLS 1.2	TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH secp256r1  FS
Firefox 62 / Win 7  R	RSA 2048 (SHA256)	TLS 1.2	TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH secp256r1  FS
Firefox 73 / Win 10  R	-	TLS 1.3	TLS_AES_256_GCM_SHA384   ECDH secp256r1  FS
Googlebot Feb 2018	RSA 2048 (SHA256)	TLS 1.2	TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH secp256r1  FS
IE 11 / Win 7  R	RSA 2048 (SHA256)	TLS 1.2	TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384   ECDH secp256r1  FS
IE 11 / Win 8.1  R	RSA 2048 (SHA256)	TLS 1.2	TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384   ECDH secp256r1  FS
IE 11 / Win Phone 8.1  R	RSA 2048 (SHA256)	TLS 1.2	TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256   ECDH secp256r1  FS
IE 11 / Win Phone 8.1 Update  R	RSA 2048 (SHA256)	TLS 1.2	TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384   ECDH secp256r1  FS
IE 11 / Win 10  R	RSA 2048 (SHA256)	TLS 1.2	TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH secp256r1  FS
Edge 15 / Win 10  R	RSA 2048 (SHA256)	TLS 1.2	TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH secp256r1  FS
Edge 16 / Win 10  R	RSA 2048 (SHA256)	TLS 1.2	TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH secp256r1  FS
Edge 18 / Win 10  R	RSA 2048 (SHA256)	TLS 1.2	TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH secp256r1  FS
Edge 13 / Win Phone 10  R	RSA 2048 (SHA256)	TLS 1.2	TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH secp256r1  FS
Java 8u161	RSA 2048 (SHA256)	TLS 1.2	TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH secp256r1  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_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH secp256r1  FS
OpenSSL 1.0.2s  R	RSA 2048 (SHA256)	TLS 1.2	TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH secp256r1  FS
OpenSSL 1.1.0k  R	RSA 2048 (SHA256)	TLS 1.2	TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH secp256r1  FS
OpenSSL 1.1.1c  R	-	TLS 1.3	TLS_AES_256_GCM_SHA384   ECDH secp256r1  FS
Safari 6 / iOS 6.0.1	RSA 2048 (SHA256)	TLS 1.2	TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384   ECDH secp256r1  FS
Safari 7 / iOS 7.1  R	RSA 2048 (SHA256)	TLS 1.2	TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384   ECDH secp256r1  FS
Safari 7 / OS X 10.9  R	RSA 2048 (SHA256)	TLS 1.2	TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384   ECDH secp256r1  FS
Safari 8 / iOS 8.4  R	RSA 2048 (SHA256)	TLS 1.2	TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384   ECDH secp256r1  FS
Safari 8 / OS X 10.10  R	RSA 2048 (SHA256)	TLS 1.2	TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384   ECDH secp256r1  FS
Safari 9 / iOS 9  R	RSA 2048 (SHA256)	TLS 1.2	TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH secp256r1  FS
Safari 9 / OS X 10.11  R	RSA 2048 (SHA256)	TLS 1.2	TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH secp256r1  FS
Safari 10 / iOS 10  R	RSA 2048 (SHA256)	TLS 1.2	TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH secp256r1  FS
Safari 10 / OS X 10.12  R	RSA 2048 (SHA256)	TLS 1.2	TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH secp256r1  FS
Safari 12.1.2 / MacOS 10.14.6 Beta  R	-	TLS 1.3	TLS_AES_256_GCM_SHA384   ECDH secp256r1  FS
Safari 12.1.1 / iOS 12.3.1  R	-	TLS 1.3	TLS_AES_256_GCM_SHA384   ECDH secp256r1  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_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH secp256r1  FS
YandexBot Jan 2015	RSA 2048 (SHA256)	TLS 1.2	TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH secp256r1  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	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)   TLS 1.2 : 0xc027
GOLDENDOODLE	No (more info)   TLS 1.2 : 0xc027
OpenSSL 0-Length	No (more info)   TLS 1.2 : 0xc027
Sleeping POODLE	No (more info)   TLS 1.2 : 0xc027
Downgrade attack prevention	Yes, TLS_FALLBACK_SCSV 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	No
NPN	No
Session resumption (caching)	Yes
Session resumption (tickets)	No
OCSP stapling	No
Strict Transport Security (HSTS)	Invalid   Server provided more than one HSTS header
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, DHE suites not supported
DH public server param (Ys) reuse	No, DHE suites not supported
ECDH public server param reuse	Yes
Supported Named Groups	secp256r1, x25519, secp384r1 (server preferred order)
SSL 2 handshake compatibility	Yes
0-RTT enabled	No

HTTP Requests

1 https://giantpanda.centrica.com/  (HTTP/1.1 302 Found)
1
	Date	Sun, 07 Sep 2025 10:52:05 GMT
	Content-Type	text/html; charset=utf-8
	Connection	close
	cache-control	must-revalidate, no-cache, no-store, post-check=0, pre-check=0, private
	cross-origin-embedder-policy	require-corp
	x-xss-protection	0
	content-security-policy	default-src 'self' pinned-centricaplc:; frame-ancestors 'self'; object-src 'none'; base-uri 'self';
	x-robots-tag	noindex, nofollow
	x-frame-options	SAMEORIGIN
	set-cookie	sra_s=eyJpdiI6IitZVXNrTk93U0FOTnpkSURETFZWRmc9PSIsInZhbHVlIjoicUoyemtIQkhEOWdPZUkyaWFZaG1zT3JSNXgwTjlsUWZHVC84UHVIdytkYWErS2xzQWhaK3N0OEg5ZmN6djl1dWQ2N2ZsRHkrUWQ2QW9CMzJpVEhQdXVnZ1BPSCtScTE5N0EydWl5MnFPVytDbjFBN1owNWN4TjRoeSthY3dyNWkiLCJtYWMiOiIwMmViYzA3NTU2NWFjYzc3ZDFhNDYyMDBlMjQ4N2ExZWU2MjVkYjlmYjlmOWExYTQ2ZTdmMTdmYWNlNWE0Nzc2IiwidGFnIjoiIn0%3D; path=/; secure; httponly; samesite=lax
	location	https://giantpanda.centrica.com/console
	x-ua-compatible	IE=edge
	x-content-type-options	nosniff
	accept-ch	Sec-CH-UA, Sec-CH-UA-Mobile, Sec-CH-UA-Platform, Sec-CH-UA-Platform-Version, Sec-CH-UA-Arch, Sec-CH-UA-Bitness
	permissions-policy	accelerometer=(), autoplay=(), camera=(), encrypted-media=(), fullscreen=(self), geolocation=(), gyroscope=(), magnetometer=(), microphone=(), midi=(), payment=(), picture-in-picture=(), sync-xhr=(), usb=()
	cross-origin-opener-policy	same-origin
	referrer-policy	strict-origin-when-cross-origin
	x-permitted-cross-domain-policies	none
	strict-transport-security	max-age=31536000
	x-trace-id	38d7e58b-b8df-4f01-b997-e6b216dc6e22
	Via	1.1 lon1-bit24006
	X-Content-Type-Options	nosniff
	X-XSS-Protection	1; mode=block
	Strict-Transport-Security	max-age=31536000; includeSubDomains
	X-Frame-Options	sameorigin
	Set-Cookie	TS016eda7b=01cb178e2c6c9847e4216c25b064b593fbc11d5880ae6ae6b96d906bd7f5d58e4d3d495fcfae6f3f29838fed10b76b53f8d4bf62f3; Path=/; Secure; HTTPOnly
	Set-Cookie	TS222f5763027=08fdb97fa4ab20003a33b1109fd777341b170ae313dd55d933e57b6a9aa872543983bfc820266eef083cd12dbc11300045a631a2137895c26a109d6e2c53e3b92b7d5eafda0896aba1cc71c1d0ccd5a75986712c414e3212849784689794716f; Path=/
	Transfer-Encoding	chunked

2 https://giantpanda.centrica.com/console  (HTTP/1.1 200 OK)
2
	Date	Sun, 07 Sep 2025 10:52:06 GMT
	Content-Type	text/html; charset=UTF-8
	Connection	close
	cache-control	must-revalidate, no-cache, no-store, post-check=0, pre-check=0, private
	content-security-policy	default-src 'self'; connect-src 'self' https://license.bt3ng.com wss://giantpanda.centrica.com wss://giantpanda.centrica.com:443; style-src 'self' 'unsafe-inline'; img-src 'self' data: blob:; frame-src 'self'; frame-ancestors 'self'; object-src 'none'; base-uri 'self';
	x-xss-protection	0
	cross-origin-embedder-policy	require-corp
	x-ua-compatible	IE=edge
	x-content-type-options	nosniff
	accept-ch	Sec-CH-UA, Sec-CH-UA-Mobile, Sec-CH-UA-Platform, Sec-CH-UA-Platform-Version, Sec-CH-UA-Arch, Sec-CH-UA-Bitness
	permissions-policy	accelerometer=(), autoplay=(), camera=(), encrypted-media=(), fullscreen=(self), geolocation=(), gyroscope=(), magnetometer=(), microphone=(), midi=(), payment=(), picture-in-picture=(), sync-xhr=(), usb=()
	cross-origin-opener-policy	same-origin
	referrer-policy	strict-origin-when-cross-origin
	x-permitted-cross-domain-policies	none
	strict-transport-security	max-age=31536000
	x-trace-id	a1893ba9-16ea-444b-af0f-5a2b088d56ec
	Via	1.1 lon1-bit24006
	X-Content-Type-Options	nosniff
	X-XSS-Protection	1; mode=block
	Strict-Transport-Security	max-age=31536000; includeSubDomains
	X-Frame-Options	sameorigin
	Set-Cookie	TS222f5763027=08fdb97fa4ab20000adb120f49fbac8a5c23641ea42918a42de2858dcdb4a208c85c0e435be9928f08df95ca24113000524015488190d5b422742bfa6bd244a10b9cdb45986249ee384bc3554458d9dc7c68a0801294b866a1c532fe0dc1daaf; Path=/
	Transfer-Encoding	chunked

Miscellaneous
Test date	Sun, 07 Sep 2025 10:51:53 UTC
Test duration	77.866 seconds
HTTP status code	200
HTTP server signature	-
Server hostname	-