Scep
These scenarios show how to configure the SCEP protocol to retrieve certificates from a PKI server.
Test SCEP Protocol With Linux PKI
Description
In this scenario, the SCEP protocol is used to retrieve digital certificates (X509) from a Linux PKI server.
Scenario
Step 1: Set the following configuration in DUT0 :
set interfaces ethernet eth0 address 10.215.168.64/24 set protocols static route 192.168.212.0/22 next-hop 10.215.168.1 set system certificate scep csr CSR cgi-path /scep set system certificate scep csr CSR cipher aes set system certificate scep csr CSR digest sha256 set system certificate scep csr CSR distinguished-names CN=MyUserCert set system certificate scep csr CSR encrypted-password U2FsdGVkX1/zl2XvjLu6igrdNbfC6igNyTB30Yrsz1Y= set system certificate scep csr CSR port 8080 set system certificate scep csr CSR url 'http://10.215.168.1' set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'
Step 2: Ping IP address 10.215.168.1 from DUT0:
admin@DUT0$ ping 10.215.168.1 count 1 size 56 timeout 1Show output
PING 10.215.168.1 (10.215.168.1) 56(84) bytes of data. 64 bytes from 10.215.168.1: icmp_seq=1 ttl=64 time=0.212 ms --- 10.215.168.1 ping statistics --- 1 packets transmitted, 1 received, 0% packet loss, time 0ms rtt min/avg/max/mdev = 0.212/0.212/0.212/0.000 ms
Step 3: Run command pki scep show CSR at DUT0 and check if output matches the following regular expressions:
ca\s+Valid usercert\s+ValidShow output
------------------------------------------------------------------------------------------------- Certificate Status Usage NotBefore NotAfter ------------------------------------------------------------------------------------------------- ca Valid Encipherment & Signature Apr 16 09:19:39 2025 GMT Apr 11 09:19:39 2045 GMT usercert Valid - Mar 5 18:01:50 2026 GMT Mar 5 18:01:50 2027 GMT
Step 4: Run command pki show certificate running://auth/certificates/scep/CSR/ca/ca.der at DUT0 and check if output contains the following tokens:
Subject: CN = Teldat-PKI, O = Teldat, L = Madrid, C = ESShow output
Certificate: Data: Version: 3 (0x2) Serial Number: 7c:28:60:8a:6f:42:5d:c8:44:f0:10:0d:61:e5:ca:40:11:bc:ea:f2 Signature Algorithm: sha256WithRSAEncryption Issuer: CN = Teldat-PKI, O = Teldat, L = Madrid, C = ES Validity Not Before: Apr 16 09:19:39 2025 GMT Not After : Apr 11 09:19:39 2045 GMT Subject: CN = Teldat-PKI, O = Teldat, L = Madrid, C = ES Subject Public Key Info: Public Key Algorithm: rsaEncryption Public-Key: (2048 bit) Modulus: 00:de:b7:3b:d9:9b:e3:d3:57:9b:b0:33:67:c0:40: 4f:45:84:ea:c2:35:a6:08:3b:3a:fd:6d:fa:d7:2b: 3d:7f:1c:a1:92:15:08:8b:5c:02:ec:6a:66:46:c5: 6f:7f:9b:9d:c3:86:e1:97:47:9b:5e:ea:96:5b:bf: 68:35:96:4f:6e:64:c6:7d:f6:da:6b:f9:bf:98:b1: 32:63:ae:f4:5b:2f:cd:6d:d7:ef:db:01:12:b0:a4: 54:95:6e:e8:84:4a:0a:f1:13:83:13:a1:7a:1d:f4: 06:3f:e3:53:5d:9f:68:a1:a0:5c:51:05:ba:8c:da: 00:11:64:4b:e8:37:c3:70:43:9c:16:dd:46:fb:34: e4:3c:ae:a4:9a:a1:da:cf:a1:f5:93:13:a6:0e:68: 51:31:f7:26:63:a3:8b:47:c3:94:e4:34:d2:b0:36: cf:22:e5:81:dd:a4:01:e8:79:08:37:ad:7a:b9:da: 24:37:cc:53:f4:51:f8:b5:67:09:15:63:52:60:7f: b0:e2:f0:38:cd:3c:13:42:81:5f:e2:dd:e2:c5:37: f3:ef:05:8c:85:2f:2a:0a:f4:94:2f:70:56:7f:7d: a9:f6:ca:69:0b:a7:40:e1:fa:bc:f0:f4:01:7a:76: 55:f4:2a:57:43:8b:f1:87:58:f2:f4:db:23:26:33: f8:4f Exponent: 65537 (0x10001) X509v3 extensions: X509v3 Subject Key Identifier: D3:97:2E:56:37:6A:89:77:01:D4:E3:42:0D:EC:E7:10:79:9C:E8:7C X509v3 Authority Key Identifier: keyid:D3:97:2E:56:37:6A:89:77:01:D4:E3:42:0D:EC:E7:10:79:9C:E8:7C DirName:/CN=Teldat-PKI/O=Teldat/L=Madrid/C=ES serial:7C:28:60:8A:6F:42:5D:C8:44:F0:10:0D:61:E5:CA:40:11:BC:EA:F2 X509v3 Basic Constraints: critical CA:TRUE, pathlen:0 X509v3 Key Usage: critical Digital Signature, Key Encipherment, Certificate Sign, CRL Sign Signature Algorithm: sha256WithRSAEncryption Signature Value: 5e:0d:47:96:a2:24:38:fa:62:5b:0c:c2:4e:59:23:79:40:1b: 88:d1:63:11:0b:ce:bc:63:46:cd:70:33:52:75:4b:85:c1:39: be:3c:ce:7c:66:53:63:b4:39:07:ec:ef:52:fe:fa:dc:c1:fb: e4:51:61:28:58:4f:90:71:83:50:7d:62:a9:16:fa:45:89:08: 5f:39:43:6a:b1:bb:ad:4e:6f:50:bc:07:4f:1c:5b:07:df:63: ec:44:20:48:b6:97:00:e2:9d:8e:42:9e:96:5f:71:7a:43:96: de:fd:66:6b:45:85:5d:e4:dc:bf:e9:34:64:4f:3a:7b:33:a0: 54:80:3b:9a:5b:1f:3f:3f:1c:09:a3:8e:d8:b6:2a:ba:b2:07: 87:fa:0f:a5:69:41:06:b1:14:6f:09:4f:bb:88:60:87:70:83: 31:73:ed:2a:03:ca:3c:19:0a:b2:24:61:c6:ce:09:97:ac:6e: da:cb:47:88:c5:f5:a7:74:d2:96:e0:cc:c3:b6:b7:f6:64:9f: ad:1c:7f:36:fd:39:7c:57:54:a5:e9:8a:82:90:4d:cd:74:99: 27:4d:f6:62:a6:96:c5:6e:d3:02:ec:c1:4d:5f:46:b6:82:75: 12:61:d7:a3:d6:70:f6:35:9d:9c:30:06:84:af:b2:cb:a5:a0: 5e:d3:1d:6c
Step 5: Run command pki show certificate running://auth/certificates/scep/CSR/user/cert at DUT0 and check if output contains the following tokens:
Subject: CN = MyUserCertShow output
Certificate: Data: Version: 3 (0x2) Serial Number: 8 (0x8) Signature Algorithm: sha256WithRSAEncryption Issuer: CN = Teldat-PKI, O = Teldat, L = Madrid, C = ES Validity Not Before: Mar 5 18:01:50 2026 GMT Not After : Mar 5 18:01:50 2027 GMT Subject: CN = MyUserCert Subject Public Key Info: Public Key Algorithm: rsaEncryption Public-Key: (2048 bit) Modulus: 00:ca:65:05:f9:fc:55:72:05:b5:d9:01:63:49:7a: aa:8a:27:ef:8c:3a:81:ce:c7:3e:74:e4:69:1c:81: 08:75:7e:68:54:e4:aa:13:95:f0:cf:44:00:54:79: 43:4d:4f:64:07:62:52:5f:6f:6d:fd:75:4a:85:de: bb:8c:8b:ed:fb:63:c9:b8:c1:ec:f1:27:33:59:bf: 88:f7:2c:b9:41:6d:1b:df:c5:b8:6d:ca:71:ce:1e: 37:94:c8:aa:1f:7a:81:b6:ce:e6:9f:ac:ea:18:47: bc:ff:b3:91:c7:35:25:df:18:01:4c:4c:2e:6d:70: ef:5b:ce:ff:3e:d5:8e:6f:9f:8d:27:d2:73:fd:0e: 61:cf:88:cd:01:44:27:14:61:00:5e:63:93:6e:52: af:1e:55:61:e7:be:86:e5:ff:17:ce:d4:85:7f:b4: 9e:0b:97:f4:17:48:5d:4a:3f:51:7d:ed:7b:21:42: ab:8d:f6:0d:88:2e:a3:0b:b3:0b:d4:a8:ac:32:85: 1a:47:6b:21:23:3d:6e:93:83:88:43:c1:e2:bf:b1: 40:71:a8:2e:80:0c:b4:e1:c2:ae:07:e3:36:2f:5f: e1:1f:8d:03:bb:ea:63:39:39:da:2e:c7:19:42:c3: ec:9f:35:0b:2d:3b:54:2c:d7:09:20:43:d6:2b:b2: f4:49 Exponent: 65537 (0x10001) X509v3 extensions: X509v3 Key Usage: critical Digital Signature X509v3 Extended Key Usage: TLS Web Client Authentication X509v3 Subject Key Identifier: 92:07:A2:1F:90:B9:09:17:C5:F2:75:CF:5A:4C:F9:0F:95:05:54:DC X509v3 Authority Key Identifier: D3:97:2E:56:37:6A:89:77:01:D4:E3:42:0D:EC:E7:10:79:9C:E8:7C Signature Algorithm: sha256WithRSAEncryption Signature Value: 4e:9f:4d:ff:0c:95:f7:0b:91:1c:08:13:51:43:b5:eb:5f:43: c6:7f:4c:46:65:63:1a:92:95:17:f6:5e:6a:14:3b:47:d9:d9: 90:b6:14:b0:77:08:4f:f6:f6:e8:32:d7:01:cd:89:f8:b8:61: c0:12:26:1f:fa:6d:05:7b:50:fd:55:41:81:f9:f8:45:4c:19: fe:15:79:21:c8:cd:9a:53:51:75:f7:bb:2d:83:3a:58:47:ad: 79:ba:97:29:45:70:7b:f6:e5:cf:64:b7:db:17:43:8e:82:de: a5:c1:c2:25:db:ff:97:05:52:59:c8:b4:2a:57:21:a3:9a:86: df:4e:44:db:dd:fa:5d:a8:73:08:4f:b0:bc:9a:cb:d6:d2:e1: d0:c7:97:6d:a8:51:bf:15:c3:1e:6f:0f:ee:35:d4:7d:12:3b: ab:34:fe:fd:4b:10:36:77:14:38:d5:ab:93:50:d9:dd:c4:0d: d4:a9:ce:3d:c1:78:6f:eb:99:e0:71:ac:77:81:10:6a:29:22: 9b:80:7d:28:4b:e0:af:38:cf:13:c0:d8:dc:3e:e4:83:8b:3e: 44:ac:50:45:ff:74:a8:b8:01:5e:e6:29:8f:2b:97:99:9c:7c: 13:66:85:c9:08:ec:2a:f7:a5:9c:50:a6:3b:5f:d3:45:f8:99: 5d:c5:19:e3
Test SCEP Protocol With Windows Server PKI
Description
In this scenario, the SCEP protocol is used to retrieve digital certificates (X509) from a Windows PKI server.
Scenario
Step 1: Set the following configuration in DUT0 :
set interfaces ethernet eth0 address 10.215.168.64/24 set protocols static route 192.168.212.0/22 next-hop 10.215.168.1 set system certificate scep csr CSR cgi-path CertSrv/mscep/mscep.dll/pkiclient.exe set system certificate scep csr CSR distinguished-names CN=MyUserCert set system certificate scep csr CSR encrypted-password U2FsdGVkX1/AjUPdRJGNfUO8ayEZncCTbGV/m05PLQhiwpZSk8qvu5UJRhzPolZc4KRT6dfGYNrHiocFG7WtzQ== set system certificate scep csr CSR url 'http://192.168.213.25/' set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'
Step 2: Ping IP address 10.215.168.1 from DUT0:
admin@DUT0$ ping 10.215.168.1 count 1 size 56 timeout 1Show output
PING 10.215.168.1 (10.215.168.1) 56(84) bytes of data. 64 bytes from 10.215.168.1: icmp_seq=1 ttl=64 time=0.129 ms --- 10.215.168.1 ping statistics --- 1 packets transmitted, 1 received, 0% packet loss, time 0ms rtt min/avg/max/mdev = 0.129/0.129/0.129/0.000 ms
Step 3: Ping IP address 192.168.213.25 from DUT0:
admin@DUT0$ ping 192.168.213.25 count 1 size 56 timeout 1Show output
PING 192.168.213.25 (192.168.213.25) 56(84) bytes of data. 64 bytes from 192.168.213.25: icmp_seq=1 ttl=126 time=0.526 ms --- 192.168.213.25 ping statistics --- 1 packets transmitted, 1 received, 0% packet loss, time 0ms rtt min/avg/max/mdev = 0.526/0.526/0.526/0.000 ms
Step 4: Run command pki scep show CSR at DUT0 and check if output matches the following regular expressions:
ca\s+Valid usercert\s+ValidShow output
------------------------------------------------------------------------------------- Certificate Status Usage NotBefore NotAfter ------------------------------------------------------------------------------------- ca Valid Signature Jan 9 09:34:41 2026 GMT Jan 9 09:44:41 2056 GMT ra Valid Encipherment Jan 9 09:37:26 2026 GMT Jan 9 09:37:26 2028 GMT ra-2 Valid Signature Jan 9 09:37:25 2026 GMT Jan 9 09:37:25 2028 GMT usercert Valid - Mar 5 17:32:14 2026 GMT Mar 5 17:42:14 2028 GMT
Step 5: Run command pki show certificate running://auth/certificates/scep/CSR/ca/ca.der at DUT0 and check if output contains the following tokens:
Subject: DC = com, DC = scep, CN = scep-TELDATPKI-CAShow output
Certificate: Data: Version: 3 (0x2) Serial Number: 2e:aa:77:9e:fd:8d:47:8d:42:5f:96:57:64:8a:da:d1 Signature Algorithm: sha256WithRSAEncryption Issuer: DC = com, DC = scep, CN = scep-TELDATPKI-CA Validity Not Before: Jan 9 09:34:41 2026 GMT Not After : Jan 9 09:44:41 2056 GMT Subject: DC = com, DC = scep, CN = scep-TELDATPKI-CA Subject Public Key Info: Public Key Algorithm: rsaEncryption Public-Key: (2048 bit) Modulus: 00:be:22:9c:cd:53:99:06:1b:31:57:cd:72:1b:d7: 5d:99:b4:e2:e1:88:80:d4:40:53:49:be:ff:e0:5b: 8b:41:8c:96:e8:99:cd:19:ab:98:4c:99:77:ad:01: fc:51:cf:ea:d8:43:fc:5b:d2:dd:b5:05:04:ae:01: 28:e9:53:5d:bb:d2:65:71:d9:69:3c:04:4d:6b:6e: 8b:95:92:e4:e7:84:57:90:b3:5e:1f:76:34:7f:15: e2:fb:c0:78:bb:ec:a5:be:2f:33:9e:98:06:f1:4c: 1f:cc:ee:85:c2:f1:8f:3c:23:52:a2:94:af:0e:b8: d2:e3:0c:b7:07:49:b9:91:87:3e:76:89:61:f0:88: 4c:2f:da:6b:b9:75:93:6e:e4:e2:f1:19:48:00:f7: af:1b:70:19:15:2b:30:b3:78:24:dc:14:c4:e8:a0: 61:f9:68:09:7d:e9:3e:6f:e0:a3:44:d5:43:f8:78: aa:5f:a8:7a:3a:7c:2c:4e:21:69:24:be:2f:cb:57: bd:60:e8:b9:a5:3b:ad:0c:7b:d9:8d:82:3e:13:96: 8b:59:5a:2b:ec:b6:63:33:21:69:a5:30:b6:bb:84: e9:80:8d:db:3c:94:f7:52:05:76:6a:ed:d6:03:24: d8:97:46:a4:15:41:4d:17:98:7d:20:64:ac:fb:e9: 30:1d Exponent: 65537 (0x10001) X509v3 extensions: 1.3.6.1.4.1.311.20.2: ...C.A X509v3 Key Usage: critical Digital Signature, Certificate Sign, CRL Sign X509v3 Basic Constraints: critical CA:TRUE X509v3 Subject Key Identifier: 18:DA:43:2C:11:47:FC:1A:DA:19:D4:6C:8B:2D:58:AA:75:ED:17:94 1.3.6.1.4.1.311.21.1: ... Signature Algorithm: sha256WithRSAEncryption Signature Value: 3b:f8:53:b9:17:78:98:fa:4a:63:a8:5b:57:bc:f6:67:d8:47: 48:8a:22:2f:d8:39:22:44:c9:f8:aa:fd:e8:81:13:c4:5f:9b: b2:72:0a:35:b1:0c:64:ff:ff:89:05:f0:d7:2a:e4:5f:da:6b: 7b:90:88:5e:6c:77:e5:17:83:19:43:10:35:f8:b5:e3:b8:b5: 16:c1:79:5e:cc:71:00:91:6a:aa:b7:7e:e8:35:99:b3:74:c1: b7:d9:93:8c:6b:4e:64:5a:0a:aa:09:ce:00:d6:f2:f0:f6:87: ec:cd:dc:d0:07:d5:cb:6d:7f:34:72:80:7b:8c:71:f3:d8:f6: a4:38:45:0e:19:79:bd:07:d6:91:a0:4f:4f:2e:55:f1:ca:f7: f3:b1:94:33:7b:f0:76:2b:10:d6:9b:49:ef:96:83:f3:f5:2e: b3:c4:48:13:2f:19:f3:18:7f:4c:7a:09:79:3b:52:94:d9:86: 65:58:32:34:ba:89:6e:54:99:ab:12:7b:f5:3d:61:f3:39:22: 08:ef:7b:77:ba:95:7e:8e:ca:51:4d:80:45:2b:43:d8:b1:37: fb:0c:69:7a:c8:5c:dc:4c:16:5f:a1:09:5c:d6:85:ed:93:76: fa:56:67:fe:fc:97:3c:8d:f8:3c:39:d7:31:07:e6:69:42:3d: 3d:d2:86:1e
Step 6: Run command pki show certificate running://auth/certificates/scep/CSR/user/cert at DUT0 and check if output contains the following tokens:
Subject: CN = MyUserCertShow output
Certificate: Data: Version: 3 (0x2) Serial Number: 11:00:00:0b:79:63:ce:2a:0d:44:52:f6:21:00:00:00:00:0b:79 Signature Algorithm: sha256WithRSAEncryption Issuer: DC = com, DC = scep, CN = scep-TELDATPKI-CA Validity Not Before: Mar 5 17:32:14 2026 GMT Not After : Mar 5 17:42:14 2028 GMT Subject: CN = MyUserCert Subject Public Key Info: Public Key Algorithm: rsaEncryption Public-Key: (2048 bit) Modulus: 00:af:8d:99:09:2c:a9:84:9b:48:af:fb:f7:50:0f: 1e:5d:28:38:25:42:e2:3c:cf:da:8f:2c:5b:3f:01: 8b:02:71:08:b1:78:2c:28:ca:4b:fc:16:17:dc:99: 8f:5e:96:c7:75:4a:8d:57:02:07:a5:d3:10:2d:01: a4:e6:c2:69:3d:87:1d:8d:07:69:1f:57:3a:4d:6d: ed:ae:ae:e4:b0:b1:38:4f:c2:0e:68:79:e1:d4:ba: cd:08:bc:52:eb:6d:2c:1c:50:bc:e6:90:b6:06:ee: c7:09:36:6a:95:33:64:20:a9:b1:f8:bb:e4:de:5f: 7b:0a:8a:cf:3e:5f:17:8e:66:3b:5a:e5:a7:ac:4f: f3:bb:77:63:88:93:85:b3:a2:4e:f5:1b:bc:f4:8b: 88:84:f4:f4:26:1d:6f:ec:b3:4c:10:e2:2b:c6:e3: 80:4f:57:e3:a0:a8:d3:23:54:81:e0:c6:22:83:4a: 5e:ec:9a:a7:da:fd:07:c9:ed:4e:a8:6f:9a:d1:be: f9:fd:27:37:b4:80:b7:8a:1b:4c:04:c3:1e:41:b5: 3b:5d:e1:34:0e:91:77:a2:5e:34:2c:70:58:53:cc: 49:ea:ac:b6:96:d8:3b:24:46:aa:9b:eb:2a:35:9c: 70:ae:de:56:ae:45:dd:8e:c5:ad:82:56:f5:d9:3b: 9f:3d Exponent: 65537 (0x10001) X509v3 extensions: X509v3 Subject Key Identifier: 65:9B:50:D8:1A:F7:94:EF:BB:A2:FA:4E:C8:F9:92:71:76:18:D4:00 X509v3 Authority Key Identifier: 18:DA:43:2C:11:47:FC:1A:DA:19:D4:6C:8B:2D:58:AA:75:ED:17:94 X509v3 CRL Distribution Points: Full Name: URI:ldap:///CN=scep-TELDATPKI-CA,CN=TeldatPKI,CN=CDP,CN=Public%20Key%20Services,CN=Services,CN=Configuration,DC=scep,DC=com?certificateRevocationList?base?objectClass=cRLDistributionPoint Authority Information Access: CA Issuers - URI:ldap:///CN=scep-TELDATPKI-CA,CN=AIA,CN=Public%20Key%20Services,CN=Services,CN=Configuration,DC=scep,DC=com?cACertificate?base?objectClass=certificationAuthority X509v3 Key Usage: critical Digital Signature, Key Encipherment, Data Encipherment 1.3.6.1.4.1.311.21.7: 0..&+.....7.....3......./...(...f<...[...]..d... X509v3 Extended Key Usage: 1.3.6.1.4.1.311.20.1, Microsoft Encrypted File System, Code Signing, Any Extended Key Usage, TLS Web Server Authentication, Signing KDC Response, TLS Web Client Authentication, 1.3.6.1.4.1.311.21.5, 1.3.6.1.4.1.311.20.2.1, 1.3.6.1.5.5.8.2.2 1.3.6.1.4.1.311.21.10: 0y0...+.....7..0.. +.....7 ..0 ..+.......0...U.%.0 ..+.......0...+......0 ..+.......0...+.....7..0.. +.....7...0 ..+....... S/MIME Capabilities: 050...*.H.. ......0...*.H.. ......0...+....0 ..*.H.. .. Signature Algorithm: sha256WithRSAEncryption Signature Value: 9a:02:c9:b5:c5:48:34:4f:2e:8f:b0:0a:e0:be:5e:9b:b8:bf: 2f:18:0f:9a:99:2d:83:93:31:87:f3:be:94:d4:93:66:95:25: 01:91:15:9f:f9:c7:51:a5:f2:30:d3:d0:e8:63:72:57:b7:2d: 55:dd:0d:78:58:41:74:d0:7b:9c:73:c3:34:fd:19:aa:08:89: 48:3c:fb:2f:33:8b:b5:72:82:41:7e:b8:ed:15:62:e7:25:00: 12:54:6f:6d:15:13:91:a9:88:a1:14:e7:a9:75:35:00:5f:aa: 97:20:23:df:6c:26:22:06:74:4c:e1:1b:32:0d:43:d9:f3:cf: b6:7c:ac:be:0b:2c:90:15:4b:de:b0:d9:3b:4c:12:50:11:8a: f2:08:75:c9:f3:e4:a2:5e:e4:54:32:da:61:72:53:ee:fd:73: 79:02:32:9a:60:b9:60:38:62:93:7e:a1:48:fe:13:d3:c4:3b: d1:d1:3a:ed:ad:09:ad:5a:29:d3:41:11:f0:3d:57:6b:5f:59: 16:54:00:5b:30:c6:f6:15:2b:bf:ae:07:32:a6:d0:65:d9:d3: da:dd:32:8c:32:80:ac:df:37:97:69:41:0a:1a:1f:55:79:f7: 99:c1:4a:cf:94:62:79:25:3a:a6:bd:9f:22:12:89:6f:72:57: 2c:57:18:79