Certificate checks
Inspect hostname and chain validation, issuer, validity dates, public key, signature, and fingerprint. Invalid certificates are reported and rejected.
SSL Server Test
Inspect your server’s TLS connections, certificate chain, protocol negotiation, and negotiated cipher suites.
Try the SSL sample report — no external requests.
SAMPLE REPORT · ILLUSTRATIVE DATA
demo.example
Validated connections observed
This report uses fabricated sample data. No external requests were made.
1Resolved addresses
1Endpoints sampled
3 / 5Validated handshakes
UnknownLegacy TLS observed
Resolved addresses: 192.0.2.10. Tests describe this server’s view at the time shown. A failed handshake is inconclusive about remote protocol support; local operating-system policy also affects results.
Endpoint 192.0.2.10 · 443
| Requested protocol | Result | Negotiated | Cipher suite |
|---|---|---|---|
| Automatic negotiation | Connected | TLS 1.3 | TLS_AES_256_GCM_SHA384 |
| TLS 1.0 | Inconclusive | — | Not negotiated |
| TLS 1.1 | Inconclusive | — | Not negotiated |
| TLS 1.2 | Connected | TLS 1.2 | TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 |
| TLS 1.3 | Connected | TLS 1.3 | TLS_AES_256_GCM_SHA384 |
Automatic negotiationHandshake completed
Illustrative sample result; no network request was made.
Certificate and identity
Subject: CN=demo.example
Issuer: CN=Illustrative certificate authority
Subject alternative names: DNS:demo.example
Validation: None
Valid from: 2026-10-05 17:04 UTC
Expires: 2027-01-03 17:04 UTC
Public key: RSA 2048 bits
Signature: sha256RSA
SHA-256 fingerprint: SAMPLE — NOT A REAL CERTIFICATE FINGERPRINT
Chain built by this server
- CN=demo.example · Sample leaf
- CN=Illustrative certificate authority · Sample issuer
TLS 1.0Review
Illustrative sample result; no network request was made.
TLS 1.1Review
Illustrative sample result; no network request was made.
TLS 1.2Handshake completed
Illustrative sample result; no network request was made.
Certificate and identity
Subject: CN=demo.example
Issuer: CN=Illustrative certificate authority
Subject alternative names: DNS:demo.example
Validation: None
Valid from: 2026-10-05 17:04 UTC
Expires: 2027-01-03 17:04 UTC
Public key: RSA 2048 bits
Signature: sha256RSA
SHA-256 fingerprint: SAMPLE — NOT A REAL CERTIFICATE FINGERPRINT
Chain built by this server
- CN=demo.example · Sample leaf
- CN=Illustrative certificate authority · Sample issuer
TLS 1.3Handshake completed
Illustrative sample result; no network request was made.
Certificate and identity
Subject: CN=demo.example
Issuer: CN=Illustrative certificate authority
Subject alternative names: DNS:demo.example
Validation: None
Valid from: 2026-10-05 17:04 UTC
Expires: 2027-01-03 17:04 UTC
Public key: RSA 2048 bits
Signature: sha256RSA
SHA-256 fingerprint: SAMPLE — NOT A REAL CERTIFICATE FINGERPRINT
Chain built by this server
- CN=demo.example · Sample leaf
- CN=Illustrative certificate authority · Sample issuer
Revocation, exhaustive cipher support, SSL 2/3, client compatibility, and attacks such as Heartbleed or ROBOT are not tested. The chain uses this server’s trust store; intermediate-certificate downloads are disabled. No SSL Labs letter grade is assigned.
Reports are not stored. Use Print / Save as PDF to retain a result.
TLS version probes
Separate handshakes request TLS 1.0, 1.1, 1.2, and 1.3 alongside automatic negotiation. Successful legacy negotiation is flagged. No application data is sent.
Deeper assessment
This is Vulscore’s bounded local test, independent of Qualys. For its full assessment and grade, open Qualys SSL Labs and submit your hostname there.