SSL Report: poczta.wcss.pl (156.17.193.195)
Assessed on:  Thu, 18 Sep 2025 03:56:04 UTC | Clear cache
Scan Another »

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
A-
0
20
40
60
80
100
Certificate
 
Protocol Support
 
Key Exchange
 
Cipher Strength
 

Visit our documentation page for more information, configuration guides, and books. Known issues are documented here.
Server sent invalid/disabled HSTS policy. See below for further information.  MORE INFO »
This server does not support TLS 1.3.  MORE INFO »
Certificate #1: RSA 2048 bits (SHA384withRSA)
Server Key and Certificate #1
Subject poczta.wcss.pl
Fingerprint SHA256: f211369fbc1e696a763e5b5e650ed962c569f15231efcb34a67e23a67a124662
Pin SHA256: ov6IF/uZ6QVMp9ocC3oZnkCBg2jlmPmy9wUtzwWMf8E=
Common names poczta.wcss.pl
Alternative names poczta.wcss.pl www.poczta.wcss.pl
Serial Number 34a1dc5981ed9b342c4e8da4c93ebfb4
Valid from Thu, 28 Nov 2024 00:00:00 UTC
Valid until Fri, 28 Nov 2025 23:59:59 UTC (expires in 2 months and 10 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)
DNS CAA No (more info)
Trusted Yes
Mozilla  Apple  Android  Java  Windows 


Additional Certificates (if supplied)
Certificates provided 2 (3666 bytes)
Chain issues None
#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 7 months)
Key RSA 4096 bits (e 65537)
Issuer USERTrust RSA Certification Authority
Signature algorithm SHA384withRSA


Certification Paths
Path #1: Trusted
1 Sent by server poczta.wcss.pl
Fingerprint SHA256: f211369fbc1e696a763e5b5e650ed962c569f15231efcb34a67e23a67a124662
Pin SHA256: ov6IF/uZ6QVMp9ocC3oZnkCBg2jlmPmy9wUtzwWMf8E=
RSA 2048 bits (e 65537) / SHA384withRSA
2 Sent by server GEANT OV RSA CA 4
Fingerprint SHA256: 37834fa5ea40fbf7b61196955962e1ca0558872435e4206653d3f620dd8e988e
Pin SHA256: j0qRK9S0oUba9b4ttZdKp42Q4T2J8S4FFKPNG5FTFVA=
RSA 4096 bits (e 65537) / SHA384withRSA
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 poczta.wcss.pl
Fingerprint SHA256: f211369fbc1e696a763e5b5e650ed962c569f15231efcb34a67e23a67a124662
Pin SHA256: ov6IF/uZ6QVMp9ocC3oZnkCBg2jlmPmy9wUtzwWMf8E=
RSA 2048 bits (e 65537) / SHA384withRSA
2 Sent by server GEANT OV RSA CA 4
Fingerprint SHA256: 37834fa5ea40fbf7b61196955962e1ca0558872435e4206653d3f620dd8e988e
Pin SHA256: j0qRK9S0oUba9b4ttZdKp42Q4T2J8S4FFKPNG5FTFVA=
RSA 4096 bits (e 65537) / SHA384withRSA
3 Extra download USERTrust RSA Certification Authority
Fingerprint SHA256: 68b9c761219a5b1f0131784474665db61bbdb109e00f05ca9f74244ee5f5f52b
Pin SHA256: x4QzPSC810K5/cMjb05Qm4k3Bw5zBn4lTdO/nEW/Td4=
RSA 4096 bits (e 65537) / SHA384withRSA
4 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 poczta.wcss.pl
Fingerprint SHA256: f211369fbc1e696a763e5b5e650ed962c569f15231efcb34a67e23a67a124662
Pin SHA256: ov6IF/uZ6QVMp9ocC3oZnkCBg2jlmPmy9wUtzwWMf8E=
RSA 2048 bits (e 65537) / SHA384withRSA
2 Sent by server GEANT OV RSA CA 4
Fingerprint SHA256: 37834fa5ea40fbf7b61196955962e1ca0558872435e4206653d3f620dd8e988e
Pin SHA256: j0qRK9S0oUba9b4ttZdKp42Q4T2J8S4FFKPNG5FTFVA=
RSA 4096 bits (e 65537) / SHA384withRSA
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 poczta.wcss.pl
Fingerprint SHA256: f211369fbc1e696a763e5b5e650ed962c569f15231efcb34a67e23a67a124662
Pin SHA256: ov6IF/uZ6QVMp9ocC3oZnkCBg2jlmPmy9wUtzwWMf8E=
RSA 2048 bits (e 65537) / SHA384withRSA
2 Sent by server GEANT OV RSA CA 4
Fingerprint SHA256: 37834fa5ea40fbf7b61196955962e1ca0558872435e4206653d3f620dd8e988e
Pin SHA256: j0qRK9S0oUba9b4ttZdKp42Q4T2J8S4FFKPNG5FTFVA=
RSA 4096 bits (e 65537) / SHA384withRSA
3 Extra download USERTrust RSA Certification Authority
Fingerprint SHA256: 68b9c761219a5b1f0131784474665db61bbdb109e00f05ca9f74244ee5f5f52b
Pin SHA256: x4QzPSC810K5/cMjb05Qm4k3Bw5zBn4lTdO/nEW/Td4=
RSA 4096 bits (e 65537) / SHA384withRSA
4 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 poczta.wcss.pl
Fingerprint SHA256: f211369fbc1e696a763e5b5e650ed962c569f15231efcb34a67e23a67a124662
Pin SHA256: ov6IF/uZ6QVMp9ocC3oZnkCBg2jlmPmy9wUtzwWMf8E=
RSA 2048 bits (e 65537) / SHA384withRSA
2 Sent by server GEANT OV RSA CA 4
Fingerprint SHA256: 37834fa5ea40fbf7b61196955962e1ca0558872435e4206653d3f620dd8e988e
Pin SHA256: j0qRK9S0oUba9b4ttZdKp42Q4T2J8S4FFKPNG5FTFVA=
RSA 4096 bits (e 65537) / SHA384withRSA
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 poczta.wcss.pl
Fingerprint SHA256: f211369fbc1e696a763e5b5e650ed962c569f15231efcb34a67e23a67a124662
Pin SHA256: ov6IF/uZ6QVMp9ocC3oZnkCBg2jlmPmy9wUtzwWMf8E=
RSA 2048 bits (e 65537) / SHA384withRSA
2 Sent by server GEANT OV RSA CA 4
Fingerprint SHA256: 37834fa5ea40fbf7b61196955962e1ca0558872435e4206653d3f620dd8e988e
Pin SHA256: j0qRK9S0oUba9b4ttZdKp42Q4T2J8S4FFKPNG5FTFVA=
RSA 4096 bits (e 65537) / SHA384withRSA
3 Extra download USERTrust RSA Certification Authority
Fingerprint SHA256: 68b9c761219a5b1f0131784474665db61bbdb109e00f05ca9f74244ee5f5f52b
Pin SHA256: x4QzPSC810K5/cMjb05Qm4k3Bw5zBn4lTdO/nEW/Td4=
RSA 4096 bits (e 65537) / SHA384withRSA
4 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 poczta.wcss.pl
Fingerprint SHA256: f211369fbc1e696a763e5b5e650ed962c569f15231efcb34a67e23a67a124662
Pin SHA256: ov6IF/uZ6QVMp9ocC3oZnkCBg2jlmPmy9wUtzwWMf8E=
RSA 2048 bits (e 65537) / SHA384withRSA
2 Sent by server GEANT OV RSA CA 4
Fingerprint SHA256: 37834fa5ea40fbf7b61196955962e1ca0558872435e4206653d3f620dd8e988e
Pin SHA256: j0qRK9S0oUba9b4ttZdKp42Q4T2J8S4FFKPNG5FTFVA=
RSA 4096 bits (e 65537) / SHA384withRSA
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 poczta.wcss.pl
Fingerprint SHA256: f211369fbc1e696a763e5b5e650ed962c569f15231efcb34a67e23a67a124662
Pin SHA256: ov6IF/uZ6QVMp9ocC3oZnkCBg2jlmPmy9wUtzwWMf8E=
RSA 2048 bits (e 65537) / SHA384withRSA
2 Sent by server GEANT OV RSA CA 4
Fingerprint SHA256: 37834fa5ea40fbf7b61196955962e1ca0558872435e4206653d3f620dd8e988e
Pin SHA256: j0qRK9S0oUba9b4ttZdKp42Q4T2J8S4FFKPNG5FTFVA=
RSA 4096 bits (e 65537) / SHA384withRSA
3 Extra download USERTrust RSA Certification Authority
Fingerprint SHA256: 68b9c761219a5b1f0131784474665db61bbdb109e00f05ca9f74244ee5f5f52b
Pin SHA256: x4QzPSC810K5/cMjb05Qm4k3Bw5zBn4lTdO/nEW/Td4=
RSA 4096 bits (e 65537) / SHA384withRSA
4 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 poczta.wcss.pl
Fingerprint SHA256: f211369fbc1e696a763e5b5e650ed962c569f15231efcb34a67e23a67a124662
Pin SHA256: ov6IF/uZ6QVMp9ocC3oZnkCBg2jlmPmy9wUtzwWMf8E=
RSA 2048 bits (e 65537) / SHA384withRSA
2 Sent by server GEANT OV RSA CA 4
Fingerprint SHA256: 37834fa5ea40fbf7b61196955962e1ca0558872435e4206653d3f620dd8e988e
Pin SHA256: j0qRK9S0oUba9b4ttZdKp42Q4T2J8S4FFKPNG5FTFVA=
RSA 4096 bits (e 65537) / SHA384withRSA
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 poczta.wcss.pl
Fingerprint SHA256: f211369fbc1e696a763e5b5e650ed962c569f15231efcb34a67e23a67a124662
Pin SHA256: ov6IF/uZ6QVMp9ocC3oZnkCBg2jlmPmy9wUtzwWMf8E=
RSA 2048 bits (e 65537) / SHA384withRSA
2 Sent by server GEANT OV RSA CA 4
Fingerprint SHA256: 37834fa5ea40fbf7b61196955962e1ca0558872435e4206653d3f620dd8e988e
Pin SHA256: j0qRK9S0oUba9b4ttZdKp42Q4T2J8S4FFKPNG5FTFVA=
RSA 4096 bits (e 65537) / SHA384withRSA
3 Extra download USERTrust RSA Certification Authority
Fingerprint SHA256: 68b9c761219a5b1f0131784474665db61bbdb109e00f05ca9f74244ee5f5f52b
Pin SHA256: x4QzPSC810K5/cMjb05Qm4k3Bw5zBn4lTdO/nEW/Td4=
RSA 4096 bits (e 65537) / SHA384withRSA
4 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

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


Cipher Suites
# TLS 1.2 (suites in server-preferred order)
TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 (0xc02f)   ECDH secp256r1 (eq. 3072 bits RSA)   FS 128
TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA (0xc013)   ECDH secp256r1 (eq. 3072 bits RSA)   FS   WEAK 128
TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256 (0xc027)   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_SHA (0xc014)   ECDH secp256r1 (eq. 3072 bits RSA)   FS   WEAK 256
TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384 (0xc028)   ECDH secp256r1 (eq. 3072 bits RSA)   FS   WEAK 256
TLS_RSA_WITH_AES_128_GCM_SHA256 (0x9c)   WEAK 128
TLS_RSA_WITH_AES_128_CBC_SHA (0x2f)   WEAK 128
TLS_RSA_WITH_AES_128_CBC_SHA256 (0x3c)   WEAK 128
TLS_RSA_WITH_AES_256_GCM_SHA384 (0x9d)   WEAK 256
TLS_RSA_WITH_AES_256_CBC_SHA (0x35)   WEAK 256
TLS_RSA_WITH_AES_256_CBC_SHA256 (0x3d)   WEAK 256
TLS_RSA_WITH_CAMELLIA_128_CBC_SHA (0x41)   WEAK 128
TLS_RSA_WITH_CAMELLIA_256_CBC_SHA (0x84)   WEAK 256
TLS_DHE_RSA_WITH_AES_128_GCM_SHA256 (0x9e)   DH 2048 bits   FS 128
TLS_DHE_RSA_WITH_AES_128_CBC_SHA (0x33)   DH 2048 bits   FS   WEAK 128
TLS_DHE_RSA_WITH_AES_128_CBC_SHA256 (0x67)   DH 2048 bits   FS   WEAK 128
TLS_DHE_RSA_WITH_AES_256_GCM_SHA384 (0x9f)   DH 2048 bits   FS 256
TLS_DHE_RSA_WITH_AES_256_CBC_SHA (0x39)   DH 2048 bits   FS   WEAK 256
TLS_DHE_RSA_WITH_AES_256_CBC_SHA256 (0x6b)   DH 2048 bits   FS   WEAK 256
TLS_DHE_RSA_WITH_CAMELLIA_128_CBC_SHA (0x45)   DH 2048 bits   FS   WEAK 128
TLS_DHE_RSA_WITH_CAMELLIA_256_CBC_SHA (0x88)   DH 2048 bits   FS   WEAK 256


Handshake Simulation
Android 4.4.2 RSA 2048 (SHA384)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256   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 TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256   ECDH secp256r1  FS
Android 7.0 RSA 2048 (SHA384)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256   ECDH secp256r1  FS
Android 8.0 RSA 2048 (SHA384)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256   ECDH secp256r1  FS
Android 8.1 RSA 2048 (SHA384)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256   ECDH secp256r1  FS
Android 9.0 RSA 2048 (SHA384)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256   ECDH secp256r1  FS
BingPreview Jan 2015 RSA 2048 (SHA384)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256   ECDH secp256r1  FS
Chrome 49 / XP SP3 RSA 2048 (SHA384)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256   ECDH secp256r1  FS
Chrome 69 / Win 7  R RSA 2048 (SHA384)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256   ECDH secp256r1  FS
Chrome 70 / Win 10 RSA 2048 (SHA384)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256   ECDH secp256r1  FS
Chrome 80 / Win 10  R RSA 2048 (SHA384)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256   ECDH secp256r1  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 TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256   ECDH secp256r1  FS
Firefox 49 / XP SP3 RSA 2048 (SHA384)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256   ECDH secp256r1  FS
Firefox 62 / Win 7  R RSA 2048 (SHA384)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256   ECDH secp256r1  FS
Firefox 73 / Win 10  R RSA 2048 (SHA384)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256   ECDH secp256r1  FS
Googlebot Feb 2018 RSA 2048 (SHA384)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256   ECDH secp256r1  FS
IE 11 / Win 7  R RSA 2048 (SHA384)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA   ECDH secp256r1  FS
IE 11 / Win 8.1  R RSA 2048 (SHA384)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA   ECDH secp256r1  FS
IE 11 / Win Phone 8.1  R RSA 2048 (SHA384)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA   ECDH secp256r1  FS
IE 11 / Win Phone 8.1 Update  R RSA 2048 (SHA384)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA   ECDH secp256r1  FS
IE 11 / Win 10  R RSA 2048 (SHA384)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256   ECDH secp256r1  FS
Edge 15 / Win 10  R RSA 2048 (SHA384)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256   ECDH secp256r1  FS
Edge 16 / Win 10  R RSA 2048 (SHA384)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256   ECDH secp256r1  FS
Edge 18 / Win 10  R RSA 2048 (SHA384)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256   ECDH secp256r1  FS
Edge 13 / Win Phone 10  R RSA 2048 (SHA384)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256   ECDH secp256r1  FS
Java 8u161 RSA 2048 (SHA384)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256   ECDH secp256r1  FS
Java 11.0.3 RSA 2048 (SHA384)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256   ECDH secp256r1  FS
Java 12.0.1 RSA 2048 (SHA384)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256   ECDH secp256r1  FS
OpenSSL 1.0.1l  R RSA 2048 (SHA384)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256   ECDH secp256r1  FS
OpenSSL 1.0.2s  R RSA 2048 (SHA384)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256   ECDH secp256r1  FS
OpenSSL 1.1.0k  R RSA 2048 (SHA384)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256   ECDH secp256r1  FS
OpenSSL 1.1.1c  R RSA 2048 (SHA384)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256   ECDH secp256r1  FS
Safari 6 / iOS 6.0.1 RSA 2048 (SHA384)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA   ECDH secp256r1  FS
Safari 7 / iOS 7.1  R RSA 2048 (SHA384)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA   ECDH secp256r1  FS
Safari 7 / OS X 10.9  R RSA 2048 (SHA384)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA   ECDH secp256r1  FS
Safari 8 / iOS 8.4  R RSA 2048 (SHA384)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA   ECDH secp256r1  FS
Safari 8 / OS X 10.10  R RSA 2048 (SHA384)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA   ECDH secp256r1  FS
Safari 9 / iOS 9  R RSA 2048 (SHA384)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256   ECDH secp256r1  FS
Safari 9 / OS X 10.11  R RSA 2048 (SHA384)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256   ECDH secp256r1  FS
Safari 10 / iOS 10  R RSA 2048 (SHA384)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256   ECDH secp256r1  FS
Safari 10 / OS X 10.12  R RSA 2048 (SHA384)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256   ECDH secp256r1  FS
Safari 12.1.2 / MacOS 10.14.6 Beta  R RSA 2048 (SHA384)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256   ECDH secp256r1  FS
Safari 12.1.1 / iOS 12.3.1  R RSA 2048 (SHA384)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256   ECDH secp256r1  FS
Apple ATS 9 / iOS 9  R RSA 2048 (SHA384)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256   ECDH secp256r1  FS
Yahoo Slurp Jan 2015 RSA 2048 (SHA384)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256   ECDH secp256r1  FS
YandexBot Jan 2015 RSA 2048 (SHA384)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256   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 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 : 0xc013
GOLDENDOODLE No (more info)   TLS 1.2 : 0xc013
OpenSSL 0-Length No (more info)   TLS 1.2 : 0xc013
Sleeping POODLE No (more info)   TLS 1.2 : 0xc013
Downgrade attack prevention Unknown (requires support for at least two protocols, excl. SSL2)
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
DH public server param (Ys) reuse No
ECDH public server param reuse Yes
Supported Named Groups secp256r1, x25519, secp384r1 (server preferred order)
SSL 2 handshake compatibility Yes


HTTP Requests
1 https://poczta.wcss.pl/  (HTTP/1.1 302 Document Moved)
1
Strict-Transport-Security max-age=31536000; includeSubDomains;
Expires Thu, 18 Sep 2035 07:54:15 GMT
Connection close
Server IceWarp/14.1.0.16 RHEL8 x64
Date Thu, 18 Sep 2025 07:54:15 GMT
Location /webmail/
Content-Type text/html
Content-Length 612
Strict-Transport-Security max-age=16070400
2 https://poczta.wcss.pl/webmail/  (HTTP/1.1 200 OK)
2
Connection close
Server IceWarp/14.1.0.16 RHEL8 x64
Date Thu, 18 Sep 2025 07:54:15 GMT
Strict-Transport-Security max-age=31536000; includeSubDomains;
X-UA-Compatible IE=edge
X-Content-Type-Options nosniff
Referrer-Policy strict-origin
Permissions-Policy geolocation=(self "https://poczta.wcss.pl/webmail/"), microphone=()
Content-Security-Policy frame-ancestors 'self' *.icewarp.com
Content-type text/html; charset=UTF-8
Strict-Transport-Security max-age=16070400


Miscellaneous
Test date Thu, 18 Sep 2025 03:54:02 UTC
Test duration 121.576 seconds
HTTP status code 200
HTTP server signature IceWarp/14.1.0.16 RHEL8 x64
Server hostname poczta.wcss.pl


SSL Report v2.4.1