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Este documento descreve como configurar o servidor SSH com o uso de certificados x509v3 em dispositivos IOS de acordo com o padrão RFC6187.
O Secure Shell Protocol (SSH) fornece autenticação mútua, ou seja, cliente e servidor são autenticados. Tradicionalmente, o servidor usa o par de chaves público e privado RSA para autenticação. O cliente SSH calcula a soma de verificação da chave pública e pergunta ao administrador se ela é confiável. O administrador deve exportar a chave pública do roteador com o uso de método fora de banda e comparar os valores. Na prática, trata-se de um método complicado e, muitas vezes, a chave pública é aceite sem verificação, o que leva a um risco potencial de ataques do homem a meio.
O padrão RFC6187 é uma solução para essa preocupação, pois fornece um nível semelhante de segurança e experiência do usuário ao protocolo TLS (Transport Layer Security) comumente usado para proteger transmissões baseadas na Web.
A Cisco recomenda que você tenha conhecimento destes tópicos:
As informações neste documento são baseadas nestas versões de software e hardware:
The information in this document was created from the devices in a specific lab environment. All of the devices used in this document started with a cleared (default) configuration. Se a rede estiver ativa, certifique-se de que você entenda o impacto potencial de qualquer comando.
Configure os parâmetros AAA. Em um cenário básico (sem servidor de autorização externo), a autorização para o nome de usuário buscado do certificado pode ser ignorada.
aaa new-model
aaa authorization network CERT none
Configure um ponto confiável que armazene o certificado CA e, opcionalmente, o certificado do roteador.
crypto pki trustpoint SSH
enrollment mode ra
enrollment url http://10.1.1.2:80/CertSrv/mscep/mscep.dll
serial-number
ip-address 10.0.0.1
subject-name cn=10.0.0.1
revocation-check ocsp
ocsp url http://10.1.1.2/ocsp
rsakeypair SSH 2048
authorization list CERT
! The username has to be fetched from the certificate for accounting and authorization purposes. Multiple options are available.
authorization username subjectname commonname
Tip: Caso o servidor OCSP esteja inacessível, o administrador pode optar por não permitir todo o acesso usando a configuração de verificação de revogação ocsp ou permitir acesso sem verificação de revogação usando verificação de revogação ocsp none (não recomendado).
Configure os mecanismos de autenticação permitidos usados durante a negociação do túnel SSH.
! Alorithms used to authenticate server
ip ssh server algorithm hostkey x509v3-ssh-rsa ssh-rsa
! Acceptable algorithms used to authenticate the client
ip ssh server algorithm authentication publickey password keyboard
! Acceptable pubkey-based algorithms used to authenticate the client
ip ssh server algorithm publickey x509v3-ssh-rsa ssh-rsa
Configure o servidor SSH para usar certificados corretos no processo de autenticação.
ip ssh server certificate profile
! Certificate used by server
server
trustpoint sign SSH
! CA used to authenticate client certificates
user
trustpoint verify SSH
Depois que o nome de usuário é buscado do certificado, o IOS pode executar a autorização para esse nome de usuário em relação ao servidor TACACS. Isso é especialmente útil se o servidor TACACS já estiver implantado para administração de dispositivos.
Note: O servidor SSH do IOS não suporta atualmente encadeamento de métodos de autenticação. Isso significa que se os certificados forem usados para autenticar o usuário, o servidor TACACS não poderá ser usado para autenticação de senha. Só pode ser utilizado para autorização.
Configure o servidor TACACS.
tacacs server ISE
address ipv4 10.1.1.3
key cisco123
Configure a lista de autorização para usar o servidor TACACS.
aaa authorization network ISE group tacacs+
1. Configurar o ISE (Identity Services Engine). O exemplo de configuração pode ser encontrado em:
2. Configure o perfil TACACS. Parâmetro adicional cert-application=all precisa ser configurado para que a autorização seja bem-sucedida, navegue para Centros de trabalho > Administração de dispositivos > Elementos de política > Resultados > Perfis TACACS > Adicionar.
3. Para configurar o conjunto de políticas, navegue para Centros de Trabalho > Administração de Dispositivos > Conjuntos de Políticas de Administração de Dispositivos > Adicionar.
show ip ssh
SSH Enabled - version 1.99
Authentication methods:publickey,password,keyboard-interactive
Authentication Publickey Algorithms:x509v3-ssh-rsa,ssh-rsa
Hostkey Algorithms:x509v3-ssh-rsa,ssh-rsa
--- output truncated ----
show users
Line User Host(s) Idle Location
1 vty 0 admin1 idle 00:02:37 192.168.1.100
Essas depurações são usadas para rastrear sessões bem-sucedidas:
debug ip ssh detail
debug crypto pki transactions
debug crypto pki messages
debug crypto pki validation
Aug 21 20:07:08.717: SSH0: starting SSH control process
! Server identifies itself
Aug 21 20:07:08.717: SSH0: sent protocol version id SSH-1.99-Cisco-1.25
! Client identifies itself
Aug 21 20:07:08.771: SSH0: protocol version id is - SSH-2.0-Pragma FortressCL 5.0.10.766
Aug 21 20:07:08.771: SSH2 0: kexinit sent: kex algo = diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1
! Authentication algorithms supported by server
Aug 21 20:07:08.771: SSH2 0: kexinit sent: hostkey algo = x509v3-ssh-rsa,ssh-rsa
Aug 21 20:07:08.772: SSH2 0: kexinit sent: encryption algo = aes128-ctr,aes192-ctr,aes256-ctr
Aug 21 20:07:08.772: SSH2 0: kexinit sent: mac algo = hmac-sha2-256,hmac-sha2-512,hmac-sha1,hmac-sha1-96
Aug 21 20:07:08.772: SSH2 0: SSH2_MSG_KEXINIT sent
Aug 21 20:07:08.915: SSH2 0: SSH2_MSG_KEXINIT received
Aug 21 20:07:08.916: SSH2 0: kex: client->server enc:aes256-ctr mac:hmac-sha1
Aug 21 20:07:08.916: SSH2 0: kex: server->client enc:aes256-ctr mac:hmac-sha1
! Client chooses authentication algorithm
Aug 21 20:07:08.916: SSH2 0: Using hostkey algo = x509v3-ssh-rsa
Aug 21 20:07:08.916: SSH2 0: Using kex_algo = diffie-hellman-group-exchange-sha1
Aug 21 20:07:08.917: SSH2 0: Modulus size established : 4096 bits
Aug 21 20:07:08.976: SSH2 0: expecting SSH2_MSG_KEX_DH_GEX_INIT
Aug 21 20:07:09.141: SSH2 0: SSH2_MSG_KEXDH_INIT received
! Server sends certificate associated with trustpoint "SSH"
Aug 21 20:07:09.208: SSH2 0: Sending Server certificate associated with PKI trustpoint "SSH"
Aug 21 20:07:09.208: CRYPTO_PKI: (A003C) Session started - identity selected (SSH)
Aug 21 20:07:09.208: SSH2 0: Got 2 certificate(s) on certificate chain
Aug 21 20:07:09.208: CRYPTO_PKI: Rcvd request to end PKI session A003C.
Aug 21 20:07:09.208: CRYPTO_PKI: PKI session A003C has ended. Freeing all resources.
Aug 21 20:07:09.209: CRYPTO_PKI: unlocked trustpoint SSH, refcount is 0
Aug 21 20:07:09.276: SSH2: kex_derive_keys complete
Aug 21 20:07:09.276: SSH2 0: SSH2_MSG_NEWKEYS sent
Aug 21 20:07:09.276: SSH2 0: waiting for SSH2_MSG_NEWKEYS
Aug 21 20:07:16.927: SSH2 0: SSH2_MSG_NEWKEYS received
Aug 21 20:07:17.177: SSH2 0: Authentications that can continue = publickey,password,keyboard-interactive
Aug 21 20:07:17.225: SSH2 0: Using method = none
Aug 21 20:07:17.226: SSH2 0: Authentications that can continue = publickey,password,keyboard-interactive
Aug 21 20:07:32.305: SSH2 0: Using method = publickey
! Client sends certificate
Aug 21 20:07:32.305: SSH2 0: Received publickey algo = x509v3-ssh-rsa
Aug 21 20:07:32.305: SSH2 0: Verifying certificate for user 'admin1' in SSH2_MSG_USERAUTH_REQUEST
Aug 21 20:07:32.305: SSH2 0: Verifying certificate for user 'admin1'
Aug 21 20:07:32.306: SSH2 0: Received a chain of 2 certificate
Aug 21 20:07:32.308: SSH2 0: Received 0 ocsp-response
Aug 21 20:07:32.308: SSH2 0: Starting PKI session for certificate verification
Aug 21 20:07:32.308: CRYPTO_PKI: (A003D) Session started - identity not specified
Aug 21 20:07:32.309: CRYPTO_PKI: (A003D) Adding peer certificate
Aug 21 20:07:32.310: CRYPTO_PKI: found UPN as admin1@example.com
Aug 21 20:07:32.310: CRYPTO_PKI: Added x509 peer certificate - (1016) bytes
Aug 21 20:07:32.310: CRYPTO_PKI: (A003D) Adding peer certificate
Aug 21 20:07:32.310: CRYPTO_PKI: Added x509 peer certificate - (879) bytes
Aug 21 20:07:32.311: CRYPTO_PKI: ip-ext-val: IP extension validation not required
Aug 21 20:07:32.311: CRYPTO_PKI: create new ca_req_context type PKI_VERIFY_CHAIN_CONTEXT,ident 31
Aug 21 20:07:32.312: CRYPTO_PKI: (A003D)validation path has 1 certs
Aug 21 20:07:32.312: CRYPTO_PKI: (A003D) Check for identical certs
Aug 21 20:07:32.312: CRYPTO_PKI : (A003D) Validating non-trusted cert
Aug 21 20:07:32.312: CRYPTO_PKI: (A003D) Create a list of suitable trustpoints
Aug 21 20:07:32.312: CRYPTO_PKI: Found a issuer match
Aug 21 20:07:32.312: CRYPTO_PKI: (A003D) Suitable trustpoints are: SSH,
Aug 21 20:07:32.313: CRYPTO_PKI: (A003D) Attempting to validate certificate using SSH policy
Aug 21 20:07:32.313: CRYPTO_PKI: (A003D) Using SSH to validate certificate
Aug 21 20:07:32.313: CRYPTO_PKI: Added 1 certs to trusted chain.
Aug 21 20:07:32.314: CRYPTO_PKI: Prepare session revocation service providers
Aug 21 20:07:32.314: CRYPTO_PKI: Deleting cached key having key id 30
Aug 21 20:07:32.314: CRYPTO_PKI: Attempting to insert the peer's public key into cache
Aug 21 20:07:32.314: CRYPTO_PKI:Peer's public inserted successfully with key id 31
Aug 21 20:07:32.315: CRYPTO_PKI: Expiring peer's cached key with key id 31
Aug 21 20:07:32.315: CRYPTO_PKI: (A003D) Certificate is verified
! Revocation status is checked
Aug 21 20:07:32.315: CRYPTO_PKI: (A003D) Checking certificate revocation
Aug 21 20:07:32.315: OCSP: (A003D) Process OCSP_VALIDATE message
Aug 21 20:07:32.315: CRYPTO_PKI: (A003D)Starting OCSP revocation check
Aug 21 20:07:32.316: CRYPTO_PKI: OCSP server URL is http://10.1.1.2/ocsp
Aug 21 20:07:32.316: CRYPTO_PKI: no responder matching this URL; create one!
Aug 21 20:07:32.316: OCSP: (A003D)OCSP Get Response command
Aug 21 20:07:32.317: CRYPTO_PKI: http connection opened
Aug 21 20:07:32.317: CRYPTO_PKI: OCSP send header size 132
Aug 21 20:07:32.317: CRYPTO_PKI: sending POST /ocsp HTTP/1.0
Host: 10.1.1.2
User-Agent: RSA-Cert-C/2.0
Content-type: application/ocsp-request
Content-length: 312
Aug 21 20:07:32.317: CRYPTO_PKI: OCSP send data size 312
Aug 21 20:07:32.322: OCSP: (A003D)OCSP Parse HTTP Response command
Aug 21 20:07:32.322: OCSP: (A003D)OCSP Validate DER Response command
Aug 21 20:07:32.322: CRYPTO_PKI: OCSP response status - successful.
Aug 21 20:07:32.323: CRYPTO_PKI: Decoding OCSP Response
Aug 21 20:07:32.323: CRYPTO_PKI: OCSP decoded status is GOOD.
Aug 21 20:07:32.323: CRYPTO_PKI: Verifying OCSP Response
Aug 21 20:07:32.325: CRYPTO_PKI: Added 11 certs to trusted chain.
Aug 21 20:07:32.325: ../VIEW_ROOT/cisco.comp/pki_ssl/src/ca/provider/revoke/ocsp/ocsputil.c(547) : E_NOT_FOUND : no matching entry found
Aug 21 20:07:32.325: ../VIEW_ROOT/cisco.comp/pki_ssl/src/ca/provider/revoke/ocsp/ocsputil.c(547) : E_NOT_FOUND : no matching entry found
Aug 21 20:07:32.326: CRYPTO_PKI: (A003D) Validating OCSP responder certificate
Aug 21 20:07:32.327: CRYPTO_PKI: OCSP Responder cert doesn't need rev check
Aug 21 20:07:32.328: CRYPTO_PKI: response signed by a delegated responder
Aug 21 20:07:32.328: CRYPTO_PKI: OCSP Response is verified
Aug 21 20:07:32.328: CRYPTO_PKI: (A003D) OCSP revocation check is complete 0
Aug 21 20:07:32.328: OCSP: destroying OCSP trans element
Aug 21 20:07:32.328: CRYPTO_PKI: Revocation check is complete, 0
Aug 21 20:07:32.328: CRYPTO_PKI: Revocation status = 0
Aug 21 20:07:32.328: CRYPTO_PKI: Remove session revocation service providers
Aug 21 20:07:32.329: CRYPTO_PKI: Remove session revocation service providers
Aug 21 20:07:32.329: CRYPTO_PKI: (A003D) Certificate validated
Aug 21 20:07:32.329: CRYPTO_PKI: Populate AAA auth data
Aug 21 20:07:32.329: CRYPTO_PKI: Selected AAA username: 'admin1'
Aug 21 20:07:32.329: CRYPTO_PKI: Anticipate checking AAA list: 'CERT'
Aug 21 20:07:32.329: CRYPTO_PKI: Checking AAA authorization
Aug 21 20:07:32.329: CRYPTO_PKI_AAA: checking AAA authorization (CERT, admin1, <all>)
Aug 21 20:07:32.329: CRYPTO_PKI_AAA: pre-authorization chain validation status (0x400)
Aug 21 20:07:32.329: CRYPTO_PKI_AAA: post-authorization chain validation status (0x400)
Aug 21 20:07:32.329: CRYPTO_PKI: (A003D)chain cert was anchored to trustpoint SSH, and chain validation result was: CRYPTO_VALID_CERT
Aug 21 20:07:32.329: CRYPTO_PKI: destroying ca_req_context type PKI_VERIFY_CHAIN_CONTEXT,ident 31, ref count 1
Aug 21 20:07:32.330: CRYPTO_PKI: ca_req_context released
Aug 21 20:07:32.330: CRYPTO_PKI: (A003D) Validation TP is SSH
Aug 21 20:07:32.330: CRYPTO_PKI: (A003D) Certificate validation succeeded
Aug 21 20:07:32.330: CRYPTO_PKI: Rcvd request to end PKI session A003D.
Aug 21 20:07:32.330: CRYPTO_PKI: PKI session A003D has ended. Freeing all resources.
Aug 21 20:07:32.395: SSH2 0: Verifying certificate for user 'admin1'
Aug 21 20:07:32.395: SSH2 0: Received a chain of 2 certificate
Aug 21 20:07:32.396: SSH2 0: Received 0 ocsp-response
Aug 21 20:07:32.396: SSH2 0: Starting PKI session for certificate verification
Aug 21 20:07:32.396: CRYPTO_PKI: (A003E) Session started - identity not specified
Aug 21 20:07:32.396: CRYPTO_PKI: (A003E) Adding peer certificate
Aug 21 20:07:32.397: CRYPTO_PKI: found UPN as admin1@example.com
Aug 21 20:07:32.397: CRYPTO_PKI: Added x509 peer certificate - (1016) bytes
Aug 21 20:07:32.397: CRYPTO_PKI: (A003E) Adding peer certificate
Aug 21 20:07:32.398: CRYPTO_PKI: Added x509 peer certificate - (879) bytes
Aug 21 20:07:32.398: CRYPTO_PKI: ip-ext-val: IP extension validation not required
Aug 21 20:07:32.400: CRYPTO_PKI: create new ca_req_context type PKI_VERIFY_CHAIN_CONTEXT,ident 32
Aug 21 20:07:32.400: CRYPTO_PKI: (A003E)validation path has 1 certs
Aug 21 20:07:32.400: CRYPTO_PKI: (A003E) Check for identical certs
Aug 21 20:07:32.400: CRYPTO_PKI : (A003E) Validating non-trusted cert
Aug 21 20:07:32.401: CRYPTO_PKI: (A003E) Create a list of suitable trustpoints
Aug 21 20:07:32.401: CRYPTO_PKI: Found a issuer match
Aug 21 20:07:32.401: CRYPTO_PKI: (A003E) Suitable trustpoints are: SSH,
Aug 21 20:07:32.401: CRYPTO_PKI: (A003E) Attempting to validate certificate using SSH policy
Aug 21 20:07:32.401: CRYPTO_PKI: (A003E) Using SSH to validate certificate
Aug 21 20:07:32.402: CRYPTO_PKI: Added 1 certs to trusted chain.
Aug 21 20:07:32.402: CRYPTO_PKI: Prepare session revocation service providers
Aug 21 20:07:32.402: CRYPTO_PKI: Deleting cached key having key id 31
Aug 21 20:07:32.403: CRYPTO_PKI: Attempting to insert the peer's public key into cache
Aug 21 20:07:32.403: CRYPTO_PKI:Peer's public inserted successfully with key id 32
Aug 21 20:07:32.404: CRYPTO_PKI: Expiring peer's cached key with key id 32
Aug 21 20:07:32.404: CRYPTO_PKI: (A003E) Certificate is verified
Aug 21 20:07:32.404: CRYPTO_PKI: (A003E) Checking certificate revocation
Aug 21 20:07:32.404: OCSP: (A003E) Process OCSP_VALIDATE message
Aug 21 20:07:32.404: CRYPTO_PKI: (A003E)Starting OCSP revocation check
Aug 21 20:07:32.405: CRYPTO_PKI: OCSP server URL is http://10.1.1.2/ocsp
Aug 21 20:07:32.405: CRYPTO_PKI: no responder matching this URL; create one!
Aug 21 20:07:32.405: OCSP: (A003E)OCSP Get Response command
Aug 21 20:07:32.406: CRYPTO_PKI: http connection opened
Aug 21 20:07:32.406: CRYPTO_PKI: OCSP send header size 132
Aug 21 20:07:32.406: CRYPTO_PKI: sending POST /ocsp HTTP/1.0
Host: 10.1.1.2
User-Agent: RSA-Cert-C/2.0
Content-type: application/ocsp-request
Content-length: 312
Aug 21 20:07:32.406: CRYPTO_PKI: OCSP send data size 312
Aug 21 20:07:32.409: OCSP: (A003E)OCSP Parse HTTP Response command
Aug 21 20:07:32.410: OCSP: (A003E)OCSP Validate DER Response command
Aug 21 20:07:32.410: CRYPTO_PKI: OCSP response status - successful.
Aug 21 20:07:32.410: CRYPTO_PKI: Decoding OCSP Response
Aug 21 20:07:32.411: CRYPTO_PKI: OCSP decoded status is GOOD.
Aug 21 20:07:32.411: CRYPTO_PKI: Verifying OCSP Response
Aug 21 20:07:32.413: CRYPTO_PKI: Added 11 certs to trusted chain.
Aug 21 20:07:32.413: ../VIEW_ROOT/cisco.comp/pki_ssl/src/ca/provider/revoke/ocsp/ocsputil.c(547) : E_NOT_FOUND : no matching entry found
Aug 21 20:07:32.413: ../VIEW_ROOT/cisco.comp/pki_ssl/src/ca/provider/revoke/ocsp/ocsputil.c(547) : E_NOT_FOUND : no matching entry found
Aug 21 20:07:32.414: CRYPTO_PKI: (A003E) Validating OCSP responder certificate
Aug 21 20:07:32.415: CRYPTO_PKI: OCSP Responder cert doesn't need rev check
Aug 21 20:07:32.415: CRYPTO_PKI: response signed by a delegated responder
Aug 21 20:07:32.416: CRYPTO_PKI: OCSP Response is verified
Aug 21 20:07:32.416: CRYPTO_PKI: (A003E) OCSP revocation check is complete 0
Aug 21 20:07:32.416: OCSP: destroying OCSP trans element
Aug 21 20:07:32.416: CRYPTO_PKI: Revocation check is complete, 0
Aug 21 20:07:32.416: CRYPTO_PKI: Revocation status = 0
Aug 21 20:07:32.416: CRYPTO_PKI: Remove session revocation service providers
Aug 21 20:07:32.416: CRYPTO_PKI: Remove session revocation service providers
Aug 21 20:07:32.416: CRYPTO_PKI: (A003E) Certificate validated
Aug 21 20:07:32.417: CRYPTO_PKI: Populate AAA auth data
Aug 21 20:07:32.417: CRYPTO_PKI: Selected AAA username: 'admin1'
Aug 21 20:07:32.417: CRYPTO_PKI: Anticipate checking AAA list: 'CERT'
Aug 21 20:07:32.417: CRYPTO_PKI: Checking AAA authorization
Aug 21 20:07:32.417: CRYPTO_PKI_AAA: checking AAA authorization (CERT, admin1, <all>)
Aug 21 20:07:32.417: CRYPTO_PKI_AAA: pre-authorization chain validation status (0x400)
Aug 21 20:07:32.417: CRYPTO_PKI_AAA: post-authorization chain validation status (0x400)
Aug 21 20:07:32.417: CRYPTO_PKI: (A003E)chain cert was anchored to trustpoint SSH, and chain validation result was: CRYPTO_VALID_CERT
Aug 21 20:07:32.417: CRYPTO_PKI: destroying ca_req_context type PKI_VERIFY_CHAIN_CONTEXT,ident 32, ref count 1
Aug 21 20:07:32.417: CRYPTO_PKI: ca_req_context released
Aug 21 20:07:32.417: CRYPTO_PKI: (A003E) Validation TP is SSH
Aug 21 20:07:32.417: CRYPTO_PKI: (A003E) Certificate validation succeeded
Aug 21 20:07:32.418: CRYPTO_PKI: Rcvd request to end PKI session A003E.
Aug 21 20:07:32.418: CRYPTO_PKI: PKI session A003E has ended. Freeing all resources.
Aug 21 20:07:32.418: SSH2 0: Verifying signature for user 'admin1' in SSH2_MSG_USERAUTH_REQUEST
Aug 21 20:07:32.418: SSH2 0: Received a chain of 2 certificate
Aug 21 20:07:32.418: SSH2 0: Received 0 ocsp-response
Aug 21 20:07:32.418: CRYPTO_PKI: found UPN as admin1@example.com
! Certificate status verified successfully
Aug 21 20:07:32.419: SSH2 0: Client Signature verification PASSED
Aug 21 20:07:32.419: SSH2 0: Certificate authentication passed for user 'admin1'
Aug 21 20:07:32.419: SSH2 0: authentication successful for admin1
Aug 21 20:07:32.470: SSH2 0: channel open request
Aug 21 20:07:32.521: SSH2 0: pty-req request
Aug 21 20:07:32.521: SSH2 0: setting TTY - requested: height 25, width 80; set: height 25, width 80
Aug 21 20:07:32.570: SSH2 0: shell request
Aug 21 20:07:32.570: SSH2 0: shell message received
Aug 21 20:07:32.570: SSH2 0: starting shell for vty
Aug 21 20:07:32.631: SSH2 0: channel window adjust message received 8
Caso o certificado para admin1 tenha sido revogado:
Aug 21 19:39:52.081: CRYPTO_PKI: OCSP Response is verified
Aug 21 19:39:52.081: CRYPTO_PKI: (A0024) OCSP revocation check is complete 0
Aug 21 19:39:52.082: OCSP: destroying OCSP trans element
Aug 21 19:39:52.082: CRYPTO_PKI: Revocation check is complete, 0
Aug 21 19:39:52.082: CRYPTO_PKI: Revocation status = 1
Aug 21 19:39:52.082: CRYPTO_PKI: Remove session revocation service providers
Aug 21 19:39:52.082: CRYPTO_PKI: Remove session revocation service providers
Aug 21 19:39:52.082: CRYPTO_PKI: (A0024) Certificate revoked
Aug 21 19:39:52.082: %PKI-3-CERTIFICATE_REVOKED: Certificate chain validation has failed. The certificate (SN: 750000001B78DA4CC0078DEC0700000000001B) is revoked
Aug 21 19:39:52.082: CRYPTO_PKI: (A0024)chain cert was anchored to trustpoint Unknown, and chain validation result was: CRYPTO_CERT_REVOKED
Aug 21 19:39:52.082: CRYPTO_PKI: destroying ca_req_context type PKI_VERIFY_CHAIN_CONTEXT,ident 18, ref count 1
Aug 21 19:39:52.082: CRYPTO_PKI: ca_req_context released
Aug 21 19:39:52.083: CRYPTO_PKI: (A0024) Certificate validation failed