SSL Server Test: rg-encyklopedie.soc.cas.cz (Powered by Qualys SSL Labs)

SSL Report: rg-encyklopedie.soc.cas.cz (147.231.52.141)

Assessed on: Sun, 20 Jul 2025 18:59:46 UTC | Clear cache

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Summary

Overall Rating

100

Certificate

Protocol Support

Key Exchange

Cipher Strength

Visit our documentation page for more information, configuration guides, and books. Known issues are documented here.

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This server supports TLS 1.3. MORE INFO »

Certificate #1: RSA 2048 bits (SHA384withRSA)

Server Key and Certificate #1
Subject	rg-encyklopedie.soc.cas.cz Fingerprint SHA256: d59aff05e0a578fd9e75debc20f47ba4af2e4e7a59e696e2875bc00c1fce5a19 Pin SHA256: /sDWZObk1OLoTjZGONPq0flGHxKslRzT4mAZ/C0/22I=
Common names	rg-encyklopedie.soc.cas.cz
Alternative names	rg-encyklopedie.soc.cas.cz www.rg-encyklopedie.soc.cas.cz
Serial Number	008b19acabf97e5ab7b659d01ec34095d8
Valid from	Fri, 27 Sep 2024 00:00:00 UTC
Valid until	Sat, 27 Sep 2025 23:59:59 UTC (expires in 2 months and 7 days)
Key	RSA 2048 bits (e 65537)
Weak key (Debian)	No
Issuer	GEANT OV RSA CA 4 AIA: http://GEANT.crt.sectigo.com/GEANTOVRSACA4.crt
Signature algorithm	SHA384withRSA
Extended Validation	No
Certificate Transparency	Yes (certificate)
OCSP Must Staple	No
Revocation information	CRL, OCSP CRL: http://GEANT.crl.sectigo.com/GEANTOVRSACA4.crl OCSP: http://GEANT.ocsp.sectigo.com
Revocation status	Good (not revoked) CRL ERROR: IOException occurred
DNS CAA	No (more info)
Trusted	Yes Mozilla Apple Android Java Windows

Additional Certificates (if supplied)
Certificates provided	4 (6216 bytes)
Chain issues	Contains anchor
#2
Subject	GEANT OV RSA CA 4 Fingerprint SHA256: 37834fa5ea40fbf7b61196955962e1ca0558872435e4206653d3f620dd8e988e Pin SHA256: j0qRK9S0oUba9b4ttZdKp42Q4T2J8S4FFKPNG5FTFVA=
Valid until	Sun, 01 May 2033 23:59:59 UTC (expires in 7 years and 9 months)
Key	RSA 4096 bits (e 65537)
Issuer	USERTrust RSA Certification Authority
Signature algorithm	SHA384withRSA
#3
Subject	USERTrust RSA Certification Authority Fingerprint SHA256: 68b9c761219a5b1f0131784474665db61bbdb109e00f05ca9f74244ee5f5f52b Pin SHA256: x4QzPSC810K5/cMjb05Qm4k3Bw5zBn4lTdO/nEW/Td4=
Valid until	Sun, 31 Dec 2028 23:59:59 UTC (expires in 3 years and 5 months)
Key	RSA 4096 bits (e 65537)
Issuer	AAA Certificate Services
Signature algorithm	SHA384withRSA
#4
Subject	AAA Certificate Services In trust store Fingerprint SHA256: d7a7a0fb5d7e2731d771e9484ebcdef71d5f0c3e0a2948782bc83ee0ea699ef4 Pin SHA256: vRU+17BDT2iGsXvOi76E7TQMcTLXAqj0+jGPdW7L1vM=
Valid until	Sun, 31 Dec 2028 23:59:59 UTC (expires in 3 years and 5 months)
Key	RSA 2048 bits (e 65537)
Issuer	AAA Certificate Services Self-signed
Signature algorithm	SHA1withRSA Weak, but no impact on root certificate

Certification Paths


Path #1: Trusted
1	Sent by server	rg-encyklopedie.soc.cas.cz Fingerprint SHA256: d59aff05e0a578fd9e75debc20f47ba4af2e4e7a59e696e2875bc00c1fce5a19 Pin SHA256: /sDWZObk1OLoTjZGONPq0flGHxKslRzT4mAZ/C0/22I= RSA 2048 bits (e 65537) / SHA384withRSA CRL ERROR: IOException occurred
2	Sent by server	GEANT OV RSA CA 4 Fingerprint SHA256: 37834fa5ea40fbf7b61196955962e1ca0558872435e4206653d3f620dd8e988e Pin SHA256: j0qRK9S0oUba9b4ttZdKp42Q4T2J8S4FFKPNG5FTFVA= RSA 4096 bits (e 65537) / SHA384withRSA CRL ERROR: IOException occurred
3	In trust store	USERTrust RSA Certification Authority Self-signed Fingerprint SHA256: e793c9b02fd8aa13e21c31228accb08119643b749c898964b1746d46c3d4cbd2 Pin SHA256: x4QzPSC810K5/cMjb05Qm4k3Bw5zBn4lTdO/nEW/Td4= RSA 4096 bits (e 65537) / SHA384withRSA
Path #2: Trusted
1	Sent by server	rg-encyklopedie.soc.cas.cz Fingerprint SHA256: d59aff05e0a578fd9e75debc20f47ba4af2e4e7a59e696e2875bc00c1fce5a19 Pin SHA256: /sDWZObk1OLoTjZGONPq0flGHxKslRzT4mAZ/C0/22I= RSA 2048 bits (e 65537) / SHA384withRSA CRL ERROR: IOException occurred
2	Sent by server	GEANT OV RSA CA 4 Fingerprint SHA256: 37834fa5ea40fbf7b61196955962e1ca0558872435e4206653d3f620dd8e988e Pin SHA256: j0qRK9S0oUba9b4ttZdKp42Q4T2J8S4FFKPNG5FTFVA= RSA 4096 bits (e 65537) / SHA384withRSA CRL ERROR: IOException occurred
3	Sent by server	USERTrust RSA Certification Authority Fingerprint SHA256: 68b9c761219a5b1f0131784474665db61bbdb109e00f05ca9f74244ee5f5f52b Pin SHA256: x4QzPSC810K5/cMjb05Qm4k3Bw5zBn4lTdO/nEW/Td4= RSA 4096 bits (e 65537) / SHA384withRSA CRL ERROR: IOException occurred
4	Sent by server In trust store	AAA Certificate Services Self-signed Fingerprint SHA256: d7a7a0fb5d7e2731d771e9484ebcdef71d5f0c3e0a2948782bc83ee0ea699ef4 Pin SHA256: vRU+17BDT2iGsXvOi76E7TQMcTLXAqj0+jGPdW7L1vM= RSA 2048 bits (e 65537) / SHA1withRSA Weak or insecure signature, but no impact on root certificate
Path #1: Trusted
1	Sent by server	rg-encyklopedie.soc.cas.cz Fingerprint SHA256: d59aff05e0a578fd9e75debc20f47ba4af2e4e7a59e696e2875bc00c1fce5a19 Pin SHA256: /sDWZObk1OLoTjZGONPq0flGHxKslRzT4mAZ/C0/22I= RSA 2048 bits (e 65537) / SHA384withRSA CRL ERROR: IOException occurred
2	Sent by server	GEANT OV RSA CA 4 Fingerprint SHA256: 37834fa5ea40fbf7b61196955962e1ca0558872435e4206653d3f620dd8e988e Pin SHA256: j0qRK9S0oUba9b4ttZdKp42Q4T2J8S4FFKPNG5FTFVA= RSA 4096 bits (e 65537) / SHA384withRSA CRL ERROR: IOException occurred
3	In trust store	USERTrust RSA Certification Authority Self-signed Fingerprint SHA256: e793c9b02fd8aa13e21c31228accb08119643b749c898964b1746d46c3d4cbd2 Pin SHA256: x4QzPSC810K5/cMjb05Qm4k3Bw5zBn4lTdO/nEW/Td4= RSA 4096 bits (e 65537) / SHA384withRSA
Path #2: Trusted
1	Sent by server	rg-encyklopedie.soc.cas.cz Fingerprint SHA256: d59aff05e0a578fd9e75debc20f47ba4af2e4e7a59e696e2875bc00c1fce5a19 Pin SHA256: /sDWZObk1OLoTjZGONPq0flGHxKslRzT4mAZ/C0/22I= RSA 2048 bits (e 65537) / SHA384withRSA CRL ERROR: IOException occurred
2	Sent by server	GEANT OV RSA CA 4 Fingerprint SHA256: 37834fa5ea40fbf7b61196955962e1ca0558872435e4206653d3f620dd8e988e Pin SHA256: j0qRK9S0oUba9b4ttZdKp42Q4T2J8S4FFKPNG5FTFVA= RSA 4096 bits (e 65537) / SHA384withRSA CRL ERROR: IOException occurred
3	Sent by server	USERTrust RSA Certification Authority Fingerprint SHA256: 68b9c761219a5b1f0131784474665db61bbdb109e00f05ca9f74244ee5f5f52b Pin SHA256: x4QzPSC810K5/cMjb05Qm4k3Bw5zBn4lTdO/nEW/Td4= RSA 4096 bits (e 65537) / SHA384withRSA CRL ERROR: IOException occurred
4	Sent by server In trust store	AAA Certificate Services Self-signed Fingerprint SHA256: d7a7a0fb5d7e2731d771e9484ebcdef71d5f0c3e0a2948782bc83ee0ea699ef4 Pin SHA256: vRU+17BDT2iGsXvOi76E7TQMcTLXAqj0+jGPdW7L1vM= RSA 2048 bits (e 65537) / SHA1withRSA Weak or insecure signature, but no impact on root certificate
Path #1: Trusted
1	Sent by server	rg-encyklopedie.soc.cas.cz Fingerprint SHA256: d59aff05e0a578fd9e75debc20f47ba4af2e4e7a59e696e2875bc00c1fce5a19 Pin SHA256: /sDWZObk1OLoTjZGONPq0flGHxKslRzT4mAZ/C0/22I= RSA 2048 bits (e 65537) / SHA384withRSA CRL ERROR: IOException occurred
2	Sent by server	GEANT OV RSA CA 4 Fingerprint SHA256: 37834fa5ea40fbf7b61196955962e1ca0558872435e4206653d3f620dd8e988e Pin SHA256: j0qRK9S0oUba9b4ttZdKp42Q4T2J8S4FFKPNG5FTFVA= RSA 4096 bits (e 65537) / SHA384withRSA CRL ERROR: IOException occurred
3	In trust store	USERTrust RSA Certification Authority Self-signed Fingerprint SHA256: e793c9b02fd8aa13e21c31228accb08119643b749c898964b1746d46c3d4cbd2 Pin SHA256: x4QzPSC810K5/cMjb05Qm4k3Bw5zBn4lTdO/nEW/Td4= RSA 4096 bits (e 65537) / SHA384withRSA
Path #2: Trusted
1	Sent by server	rg-encyklopedie.soc.cas.cz Fingerprint SHA256: d59aff05e0a578fd9e75debc20f47ba4af2e4e7a59e696e2875bc00c1fce5a19 Pin SHA256: /sDWZObk1OLoTjZGONPq0flGHxKslRzT4mAZ/C0/22I= RSA 2048 bits (e 65537) / SHA384withRSA CRL ERROR: IOException occurred
2	Sent by server	GEANT OV RSA CA 4 Fingerprint SHA256: 37834fa5ea40fbf7b61196955962e1ca0558872435e4206653d3f620dd8e988e Pin SHA256: j0qRK9S0oUba9b4ttZdKp42Q4T2J8S4FFKPNG5FTFVA= RSA 4096 bits (e 65537) / SHA384withRSA CRL ERROR: IOException occurred
3	Sent by server	USERTrust RSA Certification Authority Fingerprint SHA256: 68b9c761219a5b1f0131784474665db61bbdb109e00f05ca9f74244ee5f5f52b Pin SHA256: x4QzPSC810K5/cMjb05Qm4k3Bw5zBn4lTdO/nEW/Td4= RSA 4096 bits (e 65537) / SHA384withRSA CRL ERROR: IOException occurred
4	Sent by server In trust store	AAA Certificate Services Self-signed Fingerprint SHA256: d7a7a0fb5d7e2731d771e9484ebcdef71d5f0c3e0a2948782bc83ee0ea699ef4 Pin SHA256: vRU+17BDT2iGsXvOi76E7TQMcTLXAqj0+jGPdW7L1vM= RSA 2048 bits (e 65537) / SHA1withRSA Weak or insecure signature, but no impact on root certificate
Path #1: Trusted
1	Sent by server	rg-encyklopedie.soc.cas.cz Fingerprint SHA256: d59aff05e0a578fd9e75debc20f47ba4af2e4e7a59e696e2875bc00c1fce5a19 Pin SHA256: /sDWZObk1OLoTjZGONPq0flGHxKslRzT4mAZ/C0/22I= RSA 2048 bits (e 65537) / SHA384withRSA CRL ERROR: IOException occurred
2	Sent by server	GEANT OV RSA CA 4 Fingerprint SHA256: 37834fa5ea40fbf7b61196955962e1ca0558872435e4206653d3f620dd8e988e Pin SHA256: j0qRK9S0oUba9b4ttZdKp42Q4T2J8S4FFKPNG5FTFVA= RSA 4096 bits (e 65537) / SHA384withRSA CRL ERROR: IOException occurred
3	In trust store	USERTrust RSA Certification Authority Self-signed Fingerprint SHA256: e793c9b02fd8aa13e21c31228accb08119643b749c898964b1746d46c3d4cbd2 Pin SHA256: x4QzPSC810K5/cMjb05Qm4k3Bw5zBn4lTdO/nEW/Td4= RSA 4096 bits (e 65537) / SHA384withRSA
Path #2: Trusted
1	Sent by server	rg-encyklopedie.soc.cas.cz Fingerprint SHA256: d59aff05e0a578fd9e75debc20f47ba4af2e4e7a59e696e2875bc00c1fce5a19 Pin SHA256: /sDWZObk1OLoTjZGONPq0flGHxKslRzT4mAZ/C0/22I= RSA 2048 bits (e 65537) / SHA384withRSA CRL ERROR: IOException occurred
2	Sent by server	GEANT OV RSA CA 4 Fingerprint SHA256: 37834fa5ea40fbf7b61196955962e1ca0558872435e4206653d3f620dd8e988e Pin SHA256: j0qRK9S0oUba9b4ttZdKp42Q4T2J8S4FFKPNG5FTFVA= RSA 4096 bits (e 65537) / SHA384withRSA CRL ERROR: IOException occurred
3	Sent by server	USERTrust RSA Certification Authority Fingerprint SHA256: 68b9c761219a5b1f0131784474665db61bbdb109e00f05ca9f74244ee5f5f52b Pin SHA256: x4QzPSC810K5/cMjb05Qm4k3Bw5zBn4lTdO/nEW/Td4= RSA 4096 bits (e 65537) / SHA384withRSA CRL ERROR: IOException occurred
4	Sent by server In trust store	AAA Certificate Services Self-signed Fingerprint SHA256: d7a7a0fb5d7e2731d771e9484ebcdef71d5f0c3e0a2948782bc83ee0ea699ef4 Pin SHA256: vRU+17BDT2iGsXvOi76E7TQMcTLXAqj0+jGPdW7L1vM= RSA 2048 bits (e 65537) / SHA1withRSA Weak or insecure signature, but no impact on root certificate
Path #1: Trusted
1	Sent by server	rg-encyklopedie.soc.cas.cz Fingerprint SHA256: d59aff05e0a578fd9e75debc20f47ba4af2e4e7a59e696e2875bc00c1fce5a19 Pin SHA256: /sDWZObk1OLoTjZGONPq0flGHxKslRzT4mAZ/C0/22I= RSA 2048 bits (e 65537) / SHA384withRSA CRL ERROR: IOException occurred
2	Sent by server	GEANT OV RSA CA 4 Fingerprint SHA256: 37834fa5ea40fbf7b61196955962e1ca0558872435e4206653d3f620dd8e988e Pin SHA256: j0qRK9S0oUba9b4ttZdKp42Q4T2J8S4FFKPNG5FTFVA= RSA 4096 bits (e 65537) / SHA384withRSA CRL ERROR: IOException occurred
3	In trust store	USERTrust RSA Certification Authority Self-signed Fingerprint SHA256: e793c9b02fd8aa13e21c31228accb08119643b749c898964b1746d46c3d4cbd2 Pin SHA256: x4QzPSC810K5/cMjb05Qm4k3Bw5zBn4lTdO/nEW/Td4= RSA 4096 bits (e 65537) / SHA384withRSA
Path #2: Trusted
1	Sent by server	rg-encyklopedie.soc.cas.cz Fingerprint SHA256: d59aff05e0a578fd9e75debc20f47ba4af2e4e7a59e696e2875bc00c1fce5a19 Pin SHA256: /sDWZObk1OLoTjZGONPq0flGHxKslRzT4mAZ/C0/22I= RSA 2048 bits (e 65537) / SHA384withRSA CRL ERROR: IOException occurred
2	Sent by server	GEANT OV RSA CA 4 Fingerprint SHA256: 37834fa5ea40fbf7b61196955962e1ca0558872435e4206653d3f620dd8e988e Pin SHA256: j0qRK9S0oUba9b4ttZdKp42Q4T2J8S4FFKPNG5FTFVA= RSA 4096 bits (e 65537) / SHA384withRSA CRL ERROR: IOException occurred
3	Sent by server	USERTrust RSA Certification Authority Fingerprint SHA256: 68b9c761219a5b1f0131784474665db61bbdb109e00f05ca9f74244ee5f5f52b Pin SHA256: x4QzPSC810K5/cMjb05Qm4k3Bw5zBn4lTdO/nEW/Td4= RSA 4096 bits (e 65537) / SHA384withRSA CRL ERROR: IOException occurred
4	Sent by server In trust store	AAA Certificate Services Self-signed Fingerprint SHA256: d7a7a0fb5d7e2731d771e9484ebcdef71d5f0c3e0a2948782bc83ee0ea699ef4 Pin SHA256: vRU+17BDT2iGsXvOi76E7TQMcTLXAqj0+jGPdW7L1vM= RSA 2048 bits (e 65537) / SHA1withRSA Weak or insecure signature, but no impact on root certificate

Click here to expand

Certificate #2: RSA 2048 bits (SHA256withRSA) No SNI

Server Key and Certificate #1
Subject	www9.soc.cas.cz Fingerprint SHA256: ee842d6e0c4d63c2445e44b0a52ce2023cce5d68139884c57d8d499dadee9bf5 Pin SHA256: VaG9zEq0zoGF3U7eSSu9dIlYM3HvQCfMBaUyRGtgwcM=
Common names	www9.soc.cas.cz
Alternative names	www9.soc.cas.cz MISMATCH
Serial Number	0089c3192d5f2cd4e08d2395221aacf5b6
Valid from	Fri, 15 Jul 2022 11:09:38 UTC
Valid until	Mon, 12 Jul 2032 11:09:38 UTC (expires in 6 years and 11 months)
Key	RSA 2048 bits (e 65537)
Weak key (Debian)	No
Issuer	SOU CA
Signature algorithm	SHA256withRSA
Extended Validation	No
Certificate Transparency	No
OCSP Must Staple	No
Revocation information	None
Trusted	No NOT TRUSTED Mozilla Apple Android Java Windows

Additional Certificates (if supplied)
Certificates provided	2 (2543 bytes)
Chain issues	Contains anchor
#2
Subject	SOU CA Not in trust store Fingerprint SHA256: 990d8ed9bc518ce965dd07ca27b717a98f39795e4bcbcd8540796dd2d2b79c69 Pin SHA256: BMJEuG8dsaCVJX9Da6K1nCUJjWd9D+K8Fhs5Hbld7E0=
Valid until	Fri, 21 Apr 2028 08:18:19 UTC (expires in 2 years and 9 months)
Key	RSA 2048 bits (e 65537)
Issuer	SOU CA Self-signed
Signature algorithm	SHA256withRSA

Certification Paths


Path #1: Not trusted (path does not chain to a trusted anchor)
1	Sent by server	www9.soc.cas.cz Fingerprint SHA256: ee842d6e0c4d63c2445e44b0a52ce2023cce5d68139884c57d8d499dadee9bf5 Pin SHA256: VaG9zEq0zoGF3U7eSSu9dIlYM3HvQCfMBaUyRGtgwcM= RSA 2048 bits (e 65537) / SHA256withRSA
2	Sent by server Not in trust store	SOU CA Self-signed Fingerprint SHA256: 990d8ed9bc518ce965dd07ca27b717a98f39795e4bcbcd8540796dd2d2b79c69 Pin SHA256: BMJEuG8dsaCVJX9Da6K1nCUJjWd9D+K8Fhs5Hbld7E0= RSA 2048 bits (e 65537) / SHA256withRSA
Path #1: Not trusted (path does not chain to a trusted anchor)
1	Sent by server	www9.soc.cas.cz Fingerprint SHA256: ee842d6e0c4d63c2445e44b0a52ce2023cce5d68139884c57d8d499dadee9bf5 Pin SHA256: VaG9zEq0zoGF3U7eSSu9dIlYM3HvQCfMBaUyRGtgwcM= RSA 2048 bits (e 65537) / SHA256withRSA
2	Sent by server Not in trust store	SOU CA Self-signed Fingerprint SHA256: 990d8ed9bc518ce965dd07ca27b717a98f39795e4bcbcd8540796dd2d2b79c69 Pin SHA256: BMJEuG8dsaCVJX9Da6K1nCUJjWd9D+K8Fhs5Hbld7E0= RSA 2048 bits (e 65537) / SHA256withRSA
Path #1: Not trusted (path does not chain to a trusted anchor)
1	Sent by server	www9.soc.cas.cz Fingerprint SHA256: ee842d6e0c4d63c2445e44b0a52ce2023cce5d68139884c57d8d499dadee9bf5 Pin SHA256: VaG9zEq0zoGF3U7eSSu9dIlYM3HvQCfMBaUyRGtgwcM= RSA 2048 bits (e 65537) / SHA256withRSA
2	Sent by server Not in trust store	SOU CA Self-signed Fingerprint SHA256: 990d8ed9bc518ce965dd07ca27b717a98f39795e4bcbcd8540796dd2d2b79c69 Pin SHA256: BMJEuG8dsaCVJX9Da6K1nCUJjWd9D+K8Fhs5Hbld7E0= RSA 2048 bits (e 65537) / SHA256withRSA
Path #1: Not trusted (path does not chain to a trusted anchor)
1	Sent by server	www9.soc.cas.cz Fingerprint SHA256: ee842d6e0c4d63c2445e44b0a52ce2023cce5d68139884c57d8d499dadee9bf5 Pin SHA256: VaG9zEq0zoGF3U7eSSu9dIlYM3HvQCfMBaUyRGtgwcM= RSA 2048 bits (e 65537) / SHA256withRSA
2	Sent by server Not in trust store	SOU CA Self-signed Fingerprint SHA256: 990d8ed9bc518ce965dd07ca27b717a98f39795e4bcbcd8540796dd2d2b79c69 Pin SHA256: BMJEuG8dsaCVJX9Da6K1nCUJjWd9D+K8Fhs5Hbld7E0= RSA 2048 bits (e 65537) / SHA256withRSA
Path #1: Not trusted (path does not chain to a trusted anchor)
1	Sent by server	www9.soc.cas.cz Fingerprint SHA256: ee842d6e0c4d63c2445e44b0a52ce2023cce5d68139884c57d8d499dadee9bf5 Pin SHA256: VaG9zEq0zoGF3U7eSSu9dIlYM3HvQCfMBaUyRGtgwcM= RSA 2048 bits (e 65537) / SHA256withRSA
2	Sent by server Not in trust store	SOU CA Self-signed Fingerprint SHA256: 990d8ed9bc518ce965dd07ca27b717a98f39795e4bcbcd8540796dd2d2b79c69 Pin SHA256: BMJEuG8dsaCVJX9Da6K1nCUJjWd9D+K8Fhs5Hbld7E0= RSA 2048 bits (e 65537) / SHA256withRSA

Click here to expand

Configuration

Protocols
TLS 1.3	Yes
TLS 1.2	Yes^*
TLS 1.1	No
TLS 1.0	No^*
SSL 3	No
SSL 2	No
(*) Experimental: Server negotiated using No-SNI

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_CHACHA20_POLY1305_SHA256 (`0x1303`) ECDH x25519 (eq. 3072 bits RSA) FS	256
TLS_AES_128_GCM_SHA256 (`0x1301`) ECDH x25519 (eq. 3072 bits RSA) FS	128
# TLS 1.2 (suites in server-preferred order)
TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (`0xc030`) ECDH x25519 (eq. 3072 bits RSA) FS	256
TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256 (`0xcca8`) ECDH x25519 (eq. 3072 bits RSA) FS	256
TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 (`0xc02f`) ECDH x25519 (eq. 3072 bits RSA) FS	128
TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384 (`0xc028`) ECDH x25519 (eq. 3072 bits RSA) FS WEAK	256

Handshake Simulation
Android 4.4.2	RSA 2048 (SHA384)	TLS 1.2	TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 ECDH secp256r1 FS
Android 5.0.0	RSA 2048 (SHA384)	TLS 1.2	TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 ECDH secp256r1 FS
Android 6.0	RSA 2048 (SHA384)	TLS 1.2 > http/1.1	TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 ECDH secp256r1 FS
Android 7.0	RSA 2048 (SHA384)	TLS 1.2 > http/1.1	TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 ECDH x25519 FS
Android 8.0	RSA 2048 (SHA384)	TLS 1.2 > http/1.1	TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 ECDH x25519 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 (SHA384)	TLS 1.2	TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 ECDH secp256r1 FS
Chrome 49 / XP SP3	RSA 2048 (SHA384)	TLS 1.2 > http/1.1	TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256 ECDH secp256r1 FS
Chrome 69 / Win 7 R	RSA 2048 (SHA384)	TLS 1.2 > http/1.1	TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 ECDH x25519 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 (SHA384)	TLS 1.2	TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 ECDH secp256r1 FS
Firefox 47 / Win 7 R	RSA 2048 (SHA384)	TLS 1.2 > http/1.1	TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256 ECDH secp256r1 FS
Firefox 49 / XP SP3	RSA 2048 (SHA384)	TLS 1.2 > http/1.1	TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 ECDH secp256r1 FS
Firefox 62 / Win 7 R	RSA 2048 (SHA384)	TLS 1.2 > http/1.1	TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 ECDH x25519 FS
Firefox 73 / Win 10 R	-	TLS 1.3	TLS_AES_256_GCM_SHA384 ECDH x25519 FS
Googlebot Feb 2018	RSA 2048 (SHA384)	TLS 1.2	TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 ECDH x25519 FS
IE 11 / Win 7 R	RSA 2048 (SHA384)	TLS 1.2	TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384 ECDH secp256r1 FS
IE 11 / Win 8.1 R	RSA 2048 (SHA384)	TLS 1.2 > http/1.1	TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384 ECDH secp256r1 FS
IE 11 / Win Phone 8.1 R	Server sent fatal alert: handshake_failure
IE 11 / Win Phone 8.1 Update R	RSA 2048 (SHA384)	TLS 1.2 > http/1.1	TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384 ECDH secp256r1 FS
IE 11 / Win 10 R	RSA 2048 (SHA384)	TLS 1.2 > http/1.1	TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 ECDH secp256r1 FS
Edge 15 / Win 10 R	RSA 2048 (SHA384)	TLS 1.2 > http/1.1	TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 ECDH x25519 FS
Edge 16 / Win 10 R	RSA 2048 (SHA384)	TLS 1.2 > http/1.1	TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 ECDH x25519 FS
Edge 18 / Win 10 R	RSA 2048 (SHA384)	TLS 1.2 > http/1.1	TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 ECDH x25519 FS
Edge 13 / Win Phone 10 R	RSA 2048 (SHA384)	TLS 1.2 > http/1.1	TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 ECDH secp256r1 FS
Java 8u161	RSA 2048 (SHA384)	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 (SHA384)	TLS 1.2	TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 ECDH secp256r1 FS
OpenSSL 1.0.2s R	RSA 2048 (SHA384)	TLS 1.2	TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 ECDH secp256r1 FS
OpenSSL 1.1.0k R	RSA 2048 (SHA384)	TLS 1.2	TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 ECDH x25519 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 (SHA384)	TLS 1.2	TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384 ECDH secp256r1 FS
Safari 7 / iOS 7.1 R	RSA 2048 (SHA384)	TLS 1.2	TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384 ECDH secp256r1 FS
Safari 7 / OS X 10.9 R	RSA 2048 (SHA384)	TLS 1.2	TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384 ECDH secp256r1 FS
Safari 8 / iOS 8.4 R	RSA 2048 (SHA384)	TLS 1.2	TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384 ECDH secp256r1 FS
Safari 8 / OS X 10.10 R	RSA 2048 (SHA384)	TLS 1.2	TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384 ECDH secp256r1 FS
Safari 9 / iOS 9 R	RSA 2048 (SHA384)	TLS 1.2 > http/1.1	TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 ECDH secp256r1 FS
Safari 9 / OS X 10.11 R	RSA 2048 (SHA384)	TLS 1.2 > http/1.1	TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 ECDH secp256r1 FS
Safari 10 / iOS 10 R	RSA 2048 (SHA384)	TLS 1.2 > http/1.1	TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 ECDH secp256r1 FS
Safari 10 / OS X 10.12 R	RSA 2048 (SHA384)	TLS 1.2 > http/1.1	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 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 (SHA384)	TLS 1.2 > http/1.1	TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 ECDH secp256r1 FS
Yahoo Slurp Jan 2015	RSA 2048 (SHA384)	TLS 1.2	TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 ECDH secp256r1 FS
YandexBot Jan 2015	RSA 2048 (SHA384)	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	Unknown (more info)
GOLDENDOODLE	Unknown (more info)
OpenSSL 0-Length	Unknown (more info)
Sleeping POODLE	Unknown (more info)
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	Yes http/1.1
NPN	No
Session resumption (caching)	Yes
Session resumption (tickets)	Yes
OCSP stapling	No
Strict Transport Security (HSTS)	No
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	No
Supported Named Groups	x25519, secp256r1, x448, secp521r1, secp384r1 (server preferred order)
SSL 2 handshake compatibility	No
0-RTT enabled	No

HTTP Requests

1 https://rg-encyklopedie.soc.cas.cz/ (HTTP/1.1 301 Moved Permanently)
1
	Date	Sun, 20 Jul 2025 18:58:51 GMT
	Server	Apache/2.4.59
	X-Content-Type-Options	nosniff
	Vary	Accept-Encoding,Cookie
	Expires	Sun, 20 Jul 2025 18:58:51 GMT
	Cache-Control	private, must-revalidate, max-age=0
	Last-Modified	Sun, 20 Jul 2025 18:58:51 GMT
	Location	https://rg-encyklopedie.soc.cas.cz/index.php/Hlavn%C3%AD_strana
	X-Request-Id	ee3b5863c78054deb3ade71b
	Connection	close
	Transfer-Encoding	chunked
	Content-Type	text/html; charset=utf-8

2 https://rg-encyklopedie.soc.cas.cz/index.php/Hlavn%C3%AD_strana (HTTP/1.1 200 OK)
2
	Date	Sun, 20 Jul 2025 18:58:52 GMT
	Server	Apache/2.4.59
	X-Content-Type-Options	nosniff
	Content-language	cs
	Vary	Accept-Encoding,Cookie
	Expires	Sun, 20 Jul 2025 18:58:52 GMT
	Cache-Control	private, must-revalidate, max-age=0
	X-Request-Id	1afd09f87025552f84b268b9
	Connection	close
	Transfer-Encoding	chunked
	Content-Type	text/html; charset=UTF-8

Miscellaneous
Test date	Sun, 20 Jul 2025 18:58:39 UTC
Test duration	66.873 seconds
HTTP status code	200
HTTP server signature	Apache/2.4.59
Server hostname	www9.soc.cas.cz

SSL Report v2.4.1

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