SSL Server Test: sec-g.sunnet.coop (Powered by Qualys SSL Labs)

SSL Report: sec-g.sunnet.coop (218.44.233.142)

Assessed on: Wed, 23 Jul 2025 06:13:11 UTC | Clear cache

Due to a recently discovered bug in Apple's code, your browser is exposed to MITM attacks. Click here for more information.

Summary

Overall Rating

If trust issues are ignored: C

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's certificate is not trusted, see below for details.

This server supports weak Diffie-Hellman (DH) key exchange parameters. Grade capped to B. MORE INFO »

This server uses SSL 3, which is obsolete and insecure. Grade capped to B. MORE INFO »

The server private key is not strong enough. Grade capped to B.

This server uses RC4 with modern protocols. Grade capped to C.

This server does not support Forward Secrecy with the reference browsers. Grade capped to B. MORE INFO »

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 »

HTTP Strict Transport Security (HSTS) with long duration deployed on this server. MORE INFO »

Certificate #1: RSA 1024 bits (SHA256withRSA)

Server Key and Certificate #1
Subject	*.sunnet.coop Fingerprint SHA256: 9a0896335f9cac055eeb6d54dbcc5c1f6024ee65c6020952f1bc897551d0b744 Pin SHA256: X6KgTd96RjH4jUMGUlfGy6wt9SADPwwA5EuHad1C5ew=
Common names	*.sunnet.coop
Alternative names	sec-g.sunnet.coop sec-h.sunnet.coop 218.44.233.142
Serial Number	3b9b
Valid from	Fri, 18 Oct 2019 09:35:57 UTC
Valid until	Tue, 01 Feb 2028 11:13:22 UTC (expires in 2 years and 6 months)
Key	RSA 1024 bits (e 65537) WEAK
Weak key (Debian)	No
Issuer	Sunnet Co-op Root CA
Signature algorithm	SHA256withRSA
Extended Validation	No
Certificate Transparency	No
OCSP Must Staple	No
Revocation information	None
DNS CAA	No (more info)
Trusted	No NOT TRUSTED (Why?) Mozilla Apple Android Java Windows

Additional Certificates (if supplied)
Certificates provided	2 (1975 bytes)
Chain issues	Contains anchor
#2
Subject	Sunnet Co-op Root CA Not in trust store Fingerprint SHA256: 108085b4ddc7935f122f1301f5d881bae3634a4b9a945ac41fe48f27b3778d3a Pin SHA256: CRiLrGD7c8s6F6q0cKk5a8JM7PMmJVUuUj9dNbs6qtk=
Valid until	Tue, 01 Feb 2028 11:13:22 UTC (expires in 2 years and 6 months)
Key	RSA 1024 bits (e 65537) WEAK
Issuer	Sunnet Co-op Root CA Self-signed
Signature algorithm	SHA1withRSA Weak, but no impact on root certificate

Certification Paths


Path #1: Not trusted (path does not chain to a trusted anchor)
1	Sent by server	.sunnet.coop Fingerprint SHA256: 9a0896335f9cac055eeb6d54dbcc5c1f6024ee65c6020952f1bc897551d0b744 Pin SHA256: X6KgTd96RjH4jUMGUlfGy6wt9SADPwwA5EuHad1C5ew= RSA 1024 bits (e 65537) / SHA256withRSA WEAK KEY*
2	Sent by server Not in trust store	Sunnet Co-op Root CA Self-signed Fingerprint SHA256: 108085b4ddc7935f122f1301f5d881bae3634a4b9a945ac41fe48f27b3778d3a Pin SHA256: CRiLrGD7c8s6F6q0cKk5a8JM7PMmJVUuUj9dNbs6qtk= RSA 1024 bits (e 65537) / SHA1withRSA WEAK KEY Weak or insecure signature, but no impact on root certificate
Path #1: Not trusted (path does not chain to a trusted anchor)
1	Sent by server	.sunnet.coop Fingerprint SHA256: 9a0896335f9cac055eeb6d54dbcc5c1f6024ee65c6020952f1bc897551d0b744 Pin SHA256: X6KgTd96RjH4jUMGUlfGy6wt9SADPwwA5EuHad1C5ew= RSA 1024 bits (e 65537) / SHA256withRSA WEAK KEY*
2	Sent by server Not in trust store	Sunnet Co-op Root CA Self-signed Fingerprint SHA256: 108085b4ddc7935f122f1301f5d881bae3634a4b9a945ac41fe48f27b3778d3a Pin SHA256: CRiLrGD7c8s6F6q0cKk5a8JM7PMmJVUuUj9dNbs6qtk= RSA 1024 bits (e 65537) / SHA1withRSA WEAK KEY Weak or insecure signature, but no impact on root certificate
Path #1: Not trusted (path does not chain to a trusted anchor)
1	Sent by server	.sunnet.coop Fingerprint SHA256: 9a0896335f9cac055eeb6d54dbcc5c1f6024ee65c6020952f1bc897551d0b744 Pin SHA256: X6KgTd96RjH4jUMGUlfGy6wt9SADPwwA5EuHad1C5ew= RSA 1024 bits (e 65537) / SHA256withRSA WEAK KEY*
2	Sent by server Not in trust store	Sunnet Co-op Root CA Self-signed Fingerprint SHA256: 108085b4ddc7935f122f1301f5d881bae3634a4b9a945ac41fe48f27b3778d3a Pin SHA256: CRiLrGD7c8s6F6q0cKk5a8JM7PMmJVUuUj9dNbs6qtk= RSA 1024 bits (e 65537) / SHA1withRSA WEAK KEY Weak or insecure signature, but no impact on root certificate
Path #1: Not trusted (path does not chain to a trusted anchor)
1	Sent by server	.sunnet.coop Fingerprint SHA256: 9a0896335f9cac055eeb6d54dbcc5c1f6024ee65c6020952f1bc897551d0b744 Pin SHA256: X6KgTd96RjH4jUMGUlfGy6wt9SADPwwA5EuHad1C5ew= RSA 1024 bits (e 65537) / SHA256withRSA WEAK KEY*
2	Sent by server Not in trust store	Sunnet Co-op Root CA Self-signed Fingerprint SHA256: 108085b4ddc7935f122f1301f5d881bae3634a4b9a945ac41fe48f27b3778d3a Pin SHA256: CRiLrGD7c8s6F6q0cKk5a8JM7PMmJVUuUj9dNbs6qtk= RSA 1024 bits (e 65537) / SHA1withRSA WEAK KEY Weak or insecure signature, but no impact on root certificate
Path #1: Not trusted (path does not chain to a trusted anchor)
1	Sent by server	.sunnet.coop Fingerprint SHA256: 9a0896335f9cac055eeb6d54dbcc5c1f6024ee65c6020952f1bc897551d0b744 Pin SHA256: X6KgTd96RjH4jUMGUlfGy6wt9SADPwwA5EuHad1C5ew= RSA 1024 bits (e 65537) / SHA256withRSA WEAK KEY*
2	Sent by server Not in trust store	Sunnet Co-op Root CA Self-signed Fingerprint SHA256: 108085b4ddc7935f122f1301f5d881bae3634a4b9a945ac41fe48f27b3778d3a Pin SHA256: CRiLrGD7c8s6F6q0cKk5a8JM7PMmJVUuUj9dNbs6qtk= RSA 1024 bits (e 65537) / SHA1withRSA WEAK KEY Weak or insecure signature, but no impact on root certificate

Click here to expand

Configuration

Protocols
TLS 1.3	No
TLS 1.2	Yes
TLS 1.1	Yes
TLS 1.0	Yes
SSL 3 INSECURE	Yes
SSL 2	No

Cipher Suites
# TLS 1.2 (suites in server-preferred order)
TLS_RSA_WITH_RC4_128_SHA (`0x5`) INSECURE	128
TLS_RSA_WITH_AES_128_GCM_SHA256 (`0x9c`) WEAK	128
TLS_RSA_WITH_AES_128_CBC_SHA256 (`0x3c`) WEAK	128
TLS_RSA_WITH_AES_128_CBC_SHA (`0x2f`) WEAK	128
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_ECDHE_RSA_WITH_RC4_128_SHA (`0xc011`) ECDH secp256r1 (eq. 3072 bits RSA) FS INSECURE	128
TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 (`0xc02f`) ECDH secp256r1 (eq. 3072 bits RSA) FS	128
TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256 (`0xc027`) ECDH secp256r1 (eq. 3072 bits RSA) FS WEAK	128
TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA (`0xc013`) ECDH secp256r1 (eq. 3072 bits RSA) FS WEAK	128
TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (`0xc030`) ECDH secp256r1 (eq. 3072 bits RSA) FS	256
TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384 (`0xc028`) ECDH secp256r1 (eq. 3072 bits RSA) FS WEAK	256
TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA (`0xc014`) ECDH secp256r1 (eq. 3072 bits RSA) FS WEAK	256
TLS_DHE_RSA_WITH_AES_128_CBC_SHA (`0x33`) DH 1024 bits FS WEAK	128
TLS_DHE_RSA_WITH_AES_256_CBC_SHA (`0x39`) DH 1024 bits FS WEAK	256
TLS_RSA_WITH_RC4_128_MD5 (`0x4`) INSECURE	128
# TLS 1.1 (suites in server-preferred order)
TLS_RSA_WITH_RC4_128_SHA (`0x5`) INSECURE	128
TLS_RSA_WITH_AES_128_CBC_SHA (`0x2f`) WEAK	128
TLS_RSA_WITH_AES_256_CBC_SHA (`0x35`) WEAK	256
TLS_ECDHE_RSA_WITH_RC4_128_SHA (`0xc011`) ECDH secp256r1 (eq. 3072 bits RSA) FS INSECURE	128
TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA (`0xc013`) ECDH secp256r1 (eq. 3072 bits RSA) FS WEAK	128
TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA (`0xc014`) ECDH secp256r1 (eq. 3072 bits RSA) FS WEAK	256
TLS_DHE_RSA_WITH_AES_128_CBC_SHA (`0x33`) DH 1024 bits FS WEAK	128
TLS_DHE_RSA_WITH_AES_256_CBC_SHA (`0x39`) DH 1024 bits FS WEAK	256
TLS_RSA_WITH_RC4_128_MD5 (`0x4`) INSECURE	128
# TLS 1.0 (suites in server-preferred order)
TLS_RSA_WITH_RC4_128_SHA (`0x5`) INSECURE	128
TLS_RSA_WITH_AES_128_CBC_SHA (`0x2f`) WEAK	128
TLS_RSA_WITH_AES_256_CBC_SHA (`0x35`) WEAK	256
TLS_ECDHE_RSA_WITH_RC4_128_SHA (`0xc011`) ECDH secp256r1 (eq. 3072 bits RSA) FS INSECURE	128
TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA (`0xc013`) ECDH secp256r1 (eq. 3072 bits RSA) FS WEAK	128
TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA (`0xc014`) ECDH secp256r1 (eq. 3072 bits RSA) FS WEAK	256
TLS_DHE_RSA_WITH_AES_128_CBC_SHA (`0x33`) DH 1024 bits FS WEAK	128
TLS_DHE_RSA_WITH_AES_256_CBC_SHA (`0x39`) DH 1024 bits FS WEAK	256
TLS_RSA_WITH_RC4_128_MD5 (`0x4`) INSECURE	128
# SSL 3 (suites in server-preferred order)
TLS_RSA_WITH_RC4_128_SHA (`0x5`) INSECURE	128
TLS_RSA_WITH_AES_128_CBC_SHA (`0x2f`) WEAK	128
TLS_RSA_WITH_AES_256_CBC_SHA (`0x35`) WEAK	256
TLS_DHE_RSA_WITH_AES_128_CBC_SHA (`0x33`) DH 1024 bits FS WEAK	128
TLS_DHE_RSA_WITH_AES_256_CBC_SHA (`0x39`) DH 1024 bits FS WEAK	256
TLS_RSA_WITH_RC4_128_MD5 (`0x4`) INSECURE	128

Handshake Simulation
Android 2.3.7 No SNI ²	RSA 1024 (SHA256)	TLS 1.0	TLS_RSA_WITH_RC4_128_SHA No FS RC4
Android 4.0.4	RSA 1024 (SHA256)	TLS 1.0	TLS_RSA_WITH_RC4_128_SHA No FS RC4
Android 4.1.1	RSA 1024 (SHA256)	TLS 1.0	TLS_RSA_WITH_RC4_128_SHA No FS RC4
Android 4.2.2	RSA 1024 (SHA256)	TLS 1.0	TLS_RSA_WITH_RC4_128_SHA No FS RC4
Android 4.3	RSA 1024 (SHA256)	TLS 1.0	TLS_RSA_WITH_RC4_128_SHA No FS RC4
Android 4.4.2	RSA 1024 (SHA256)	TLS 1.2	TLS_RSA_WITH_RC4_128_SHA No FS RC4
Android 5.0.0	RSA 1024 (SHA256)	TLS 1.2	TLS_RSA_WITH_RC4_128_SHA No FS RC4
Android 6.0	RSA 1024 (SHA256)	TLS 1.2	TLS_RSA_WITH_AES_128_GCM_SHA256 No FS
Android 7.0	RSA 1024 (SHA256)	TLS 1.2	TLS_RSA_WITH_AES_128_GCM_SHA256 No FS
Android 8.0	RSA 1024 (SHA256)	TLS 1.2	TLS_RSA_WITH_AES_128_GCM_SHA256 No FS
Android 8.1	RSA 1024 (SHA256)	TLS 1.2	TLS_RSA_WITH_AES_128_GCM_SHA256 No FS
Android 9.0	RSA 1024 (SHA256)	TLS 1.2	TLS_RSA_WITH_AES_128_GCM_SHA256 No FS
Baidu Jan 2015	RSA 1024 (SHA256)	TLS 1.0	TLS_RSA_WITH_RC4_128_SHA No FS RC4
BingPreview Jan 2015	RSA 1024 (SHA256)	TLS 1.2	TLS_RSA_WITH_RC4_128_SHA No FS RC4
Chrome 49 / XP SP3	RSA 1024 (SHA256)	TLS 1.2	TLS_RSA_WITH_AES_128_GCM_SHA256 No FS
Chrome 69 / Win 7 R	RSA 1024 (SHA256)	TLS 1.2	TLS_RSA_WITH_AES_128_GCM_SHA256 No FS
Chrome 70 / Win 10	RSA 1024 (SHA256)	TLS 1.2	TLS_RSA_WITH_AES_128_GCM_SHA256 No FS
Chrome 80 / Win 10 R	RSA 1024 (SHA256)	TLS 1.2	TLS_RSA_WITH_AES_128_GCM_SHA256 No FS
Firefox 31.3.0 ESR / Win 7	RSA 1024 (SHA256)	TLS 1.2	TLS_RSA_WITH_RC4_128_SHA No FS RC4
Firefox 47 / Win 7 R	RSA 1024 (SHA256)	TLS 1.2	TLS_RSA_WITH_AES_128_CBC_SHA No FS
Firefox 49 / XP SP3	RSA 1024 (SHA256)	TLS 1.2	TLS_RSA_WITH_AES_128_CBC_SHA No FS
Firefox 62 / Win 7 R	RSA 1024 (SHA256)	TLS 1.2	TLS_RSA_WITH_AES_128_CBC_SHA No FS
Firefox 73 / Win 10 R	RSA 1024 (SHA256)	TLS 1.2	TLS_RSA_WITH_AES_128_CBC_SHA No FS
Googlebot Feb 2018	RSA 1024 (SHA256)	TLS 1.2	TLS_RSA_WITH_AES_128_GCM_SHA256 No FS
IE 6 / XP No FS ¹ No SNI ²	RSA 1024 (SHA256)	SSL 3	TLS_RSA_WITH_RC4_128_SHA RC4
IE 7 / Vista	RSA 1024 (SHA256)	TLS 1.0	TLS_RSA_WITH_RC4_128_SHA No FS RC4
IE 8 / XP No FS ¹ No SNI ²	RSA 1024 (SHA256)	TLS 1.0	TLS_RSA_WITH_RC4_128_SHA RC4
IE 8-10 / Win 7 R	RSA 1024 (SHA256)	TLS 1.0	TLS_RSA_WITH_RC4_128_SHA No FS RC4
IE 11 / Win 7 R	RSA 1024 (SHA256)	TLS 1.2	TLS_RSA_WITH_AES_128_GCM_SHA256 No FS
IE 11 / Win 8.1 R	RSA 1024 (SHA256)	TLS 1.2	TLS_RSA_WITH_AES_128_GCM_SHA256 No FS
IE 10 / Win Phone 8.0	RSA 1024 (SHA256)	TLS 1.0	TLS_RSA_WITH_RC4_128_SHA No FS RC4
IE 11 / Win Phone 8.1 R	RSA 1024 (SHA256)	TLS 1.2	TLS_RSA_WITH_AES_128_CBC_SHA256 No FS
IE 11 / Win Phone 8.1 Update R	RSA 1024 (SHA256)	TLS 1.2	TLS_RSA_WITH_AES_128_GCM_SHA256 No FS
IE 11 / Win 10 R	RSA 1024 (SHA256)	TLS 1.2	TLS_RSA_WITH_AES_128_GCM_SHA256 No FS
Edge 15 / Win 10 R	RSA 1024 (SHA256)	TLS 1.2	TLS_RSA_WITH_AES_128_GCM_SHA256 No FS
Edge 16 / Win 10 R	RSA 1024 (SHA256)	TLS 1.2	TLS_RSA_WITH_AES_128_GCM_SHA256 No FS
Edge 18 / Win 10 R	RSA 1024 (SHA256)	TLS 1.2	TLS_RSA_WITH_AES_128_GCM_SHA256 No FS
Edge 13 / Win Phone 10 R	RSA 1024 (SHA256)	TLS 1.2	TLS_RSA_WITH_AES_128_GCM_SHA256 No FS
Java 6u45 No SNI ²	RSA 1024 (SHA256)	TLS 1.0	TLS_RSA_WITH_RC4_128_SHA No FS RC4
Java 7u25	RSA 1024 (SHA256)	TLS 1.0	TLS_RSA_WITH_RC4_128_SHA No FS RC4
Java 8u161	RSA 1024 (SHA256)	TLS 1.2	TLS_RSA_WITH_AES_128_GCM_SHA256 No FS
Java 11.0.3	RSA 1024 (SHA256)	TLS 1.2	TLS_RSA_WITH_AES_128_GCM_SHA256 No FS
Java 12.0.1	RSA 1024 (SHA256)	TLS 1.2	TLS_RSA_WITH_AES_128_GCM_SHA256 No FS
OpenSSL 0.9.8y	RSA 1024 (SHA256)	TLS 1.0	TLS_RSA_WITH_RC4_128_SHA No FS RC4
OpenSSL 1.0.1l R	RSA 1024 (SHA256)	TLS 1.2	TLS_RSA_WITH_RC4_128_SHA No FS RC4
OpenSSL 1.0.2s R	RSA 1024 (SHA256)	TLS 1.2	TLS_RSA_WITH_RC4_128_SHA No FS RC4
OpenSSL 1.1.0k R	RSA 1024 (SHA256)	TLS 1.2	TLS_RSA_WITH_AES_128_GCM_SHA256 No FS
OpenSSL 1.1.1c R	RSA 1024 (SHA256)	TLS 1.2	TLS_RSA_WITH_AES_128_GCM_SHA256 No FS
Safari 5.1.9 / OS X 10.6.8	RSA 1024 (SHA256)	TLS 1.0	TLS_RSA_WITH_RC4_128_SHA No FS RC4
Safari 6 / iOS 6.0.1	RSA 1024 (SHA256)	TLS 1.2	TLS_RSA_WITH_RC4_128_SHA No FS RC4
Safari 6.0.4 / OS X 10.8.4 R	RSA 1024 (SHA256)	TLS 1.0	TLS_RSA_WITH_RC4_128_SHA No FS RC4
Safari 7 / iOS 7.1 R	RSA 1024 (SHA256)	TLS 1.2	TLS_RSA_WITH_RC4_128_SHA No FS RC4
Safari 7 / OS X 10.9 R	RSA 1024 (SHA256)	TLS 1.2	TLS_RSA_WITH_RC4_128_SHA No FS RC4
Safari 8 / iOS 8.4 R	RSA 1024 (SHA256)	TLS 1.2	TLS_RSA_WITH_RC4_128_SHA No FS RC4
Safari 8 / OS X 10.10 R	RSA 1024 (SHA256)	TLS 1.2	TLS_RSA_WITH_RC4_128_SHA No FS RC4
Safari 9 / iOS 9 R	RSA 1024 (SHA256)	TLS 1.2	TLS_RSA_WITH_RC4_128_SHA No FS RC4
Safari 9 / OS X 10.11 R	RSA 1024 (SHA256)	TLS 1.2	TLS_RSA_WITH_RC4_128_SHA No FS RC4
Safari 10 / iOS 10 R	RSA 1024 (SHA256)	TLS 1.2	TLS_RSA_WITH_AES_128_GCM_SHA256 No FS
Safari 10 / OS X 10.12 R	RSA 1024 (SHA256)	TLS 1.2	TLS_RSA_WITH_AES_128_GCM_SHA256 No FS
Safari 12.1.2 / MacOS 10.14.6 Beta R	RSA 1024 (SHA256)	TLS 1.2	TLS_RSA_WITH_AES_128_GCM_SHA256 No FS
Safari 12.1.1 / iOS 12.3.1 R	RSA 1024 (SHA256)	TLS 1.2	TLS_RSA_WITH_AES_128_GCM_SHA256 No FS
Apple ATS 9 / iOS 9 R	Client does not support RSA keys < 2048 bits RSA 1024 (SHA256) \| TLS 1.2 \| TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 \| ECDH secp256r1
Yahoo Slurp Jan 2015	RSA 1024 (SHA256)	TLS 1.2	TLS_RSA_WITH_RC4_128_SHA No FS RC4
YandexBot Jan 2015	RSA 1024 (SHA256)	TLS 1.2	TLS_RSA_WITH_RC4_128_SHA No FS RC4
(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) SSL 3: `0x5`, TLS 1.0: `0x5`
POODLE (SSLv3)	No, mitigated (more info) SSL 3: `0x5`
POODLE (TLS)	No (more info)
Zombie POODLE	No (more info) TLS 1.2 : `0x003c`
GOLDENDOODLE	No (more info) TLS 1.2 : `0x003c`
OpenSSL 0-Length	No (more info) TLS 1.2 : `0x003c`
Sleeping POODLE	No (more info) TLS 1.2 : `0x003c`
Downgrade attack prevention	Yes, TLS_FALLBACK_SCSV supported (more info)
SSL/TLS compression	No
RC4	Yes INSECURE (more info)
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)	No
OCSP stapling	No
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	secp256r1, secp384r1 (server preferred order)
SSL 2 handshake compatibility	Yes

HTTP Requests

1 https://sec-g.sunnet.coop/ (HTTP/1.1 404 Not Found)
1
	Content-Type	text/html; charset=utf-8
	Connection	close
	Pragma	no-cache
	Cache-Control	no-store
	Expires	-1
	Content-Length	2560
	X-XSS-Protection	1
	Strict-Transport-Security	max-age=31536000

Miscellaneous
Test date	Wed, 23 Jul 2025 06:09:45 UTC
Test duration	205.739 seconds
HTTP status code	404
HTTP server signature	-
Server hostname	-

Why is my certificate not trusted?

There are many reasons why a certificate may not be trusted. The exact problem is indicated on the report card in bright red. The problems fall into three categories:

Invalid certificate
Invalid configuration
Unknown Certificate Authority

1. Invalid certificate

A certificate is invalid if:

It is used before its activation date
It is used after its expiry date
Certificate hostnames don't match the site hostname
It has been revoked
It has insecure signature
It has been blacklisted

2. Invalid configuration

In some cases, the certificate chain does not contain all the necessary certificates to connect the web server certificate to one of the root certificates in our trust store. Less commonly, one of the certificates in the chain (other than the web server certificate) will have expired, and that invalidates the entire chain.

3. Unknown Certificate Authority

In order for trust to be established, we must have the root certificate of the signing Certificate Authority in our trust store. SSL Labs does not maintain its own trust store; instead we use the store maintained by Mozilla.

If we mark a web site as not trusted, that means that the average web user's browser will not trust it either. For certain special groups of users, such web sites can still be secure. For example, if you can securely verify that a self-signed web site is operated by a person you trust, then you can trust that self-signed web site too. Or, if you work for an organisation that manages its own trust, and you have their own root certificate already embedded in your browser. Such special cases do not work for the general public, however, and this is what we indicate on our report card.

4. Interoperability issues

In some rare cases trust cannot be established because of interoperability issues between our code and the code or configuration running on the server. We manually review such cases, but if you encounter such an issue please feel free to contact us. Such problems are very difficult to troubleshoot and you may be able to provide us with information that might help us determine the root cause.

SSL Report v2.4.1

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