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vendors:cisco:uc:cube:tls [2021/04/01 17:05] – [CUCM Config] gerardorourkevendors:cisco:uc:cube:tls [2026/05/19 17:50] (current) – [Generating CSR] gerardorourke
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-====== CUCM-CUBE TLS SIP Trunk ======+====== CUBE - TLS ====== 
 +===== Generating CSR ===== 
 + 
 +We need to create a CSR which will be signed by a CA (and likely also an intermediate CA). 
 +Steps: 
 +  *Create trustpoint 'CUBETLS2' (we could call it anything) as per below config 
 +    * <code> 
 +crypto pki trustpoint CUBETLS2 
 +  enrollment terminal pem 
 +  serial-number none 
 +  ip-address none 
 +  subject-name cn=ROUTER1.mydomain.com 
 +  subject-alt-name ROUTER1.mydomain.com 
 +  revocation-check none 
 +  resakeypair CUBETLS2 
 +  hash sha512 
 +</code> 
 +  *Request the CSR  
 +    * <code> 
 +! This displays the Certificate Signing Request (CSR) to the terminal 
 +configure terminal 
 +  crypto pki enroll CUBETLS2 
 +! 
 +</code> 
 + 
 +Then once you have the PEM file returned - which should contain the signed cert, as well as the inter and root CAs) 
 +you need to import the intermediate and CA certs (in that order and both together) 
 + 
 +  * <code> 
 +conf terminal 
 +  crypto pki authenticate CUBETLS2 
 +</code> 
 +  *Paste the 2 certs into above. Each Cert will start and end with -----BEGIN CERTIFICATE----- and -----END CERTIFICATE----- 
 +  *You will paste both the inter and CA cert (in that order) and then after pasting in each leave a line space to complete the import. 
 + 
 +Finally import the actual certificate for that router. 
 +  *<code>  
 +crypt pki import CUBETLS2 certificate 
 +</code> 
 + 
 + 
 + 
 + 
 + 
 + 
 +===== CUCM-CUBE TLS SIP Trunk =====
  
 What we want - TLS between CUBE and CUCM - but not have SRTP - Note enabling SRTP can have a 75% impact on sizing on the 4431s) What we want - TLS between CUBE and CUCM - but not have SRTP - Note enabling SRTP can have a 75% impact on sizing on the 4431s)
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 Reference: https://www.cisco.com/c/en/us/support/docs/unified-communications/unified-border-element/212090-Configure-SIP-TLS-between-CUCM-CUBE-CUBE.html Reference: https://www.cisco.com/c/en/us/support/docs/unified-communications/unified-border-element/212090-Configure-SIP-TLS-between-CUCM-CUBE-CUBE.html
  
-===== Summary Steps =====+==== Summary Steps ====
   * Make sure CUBE and CUCM are both NTP synced, i.e. their times are correct.   * Make sure CUBE and CUCM are both NTP synced, i.e. their times are correct.
   * Enabling SIP over TLS requires the CUBE to have a Security License as well as the UC License   * Enabling SIP over TLS requires the CUBE to have a Security License as well as the UC License
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   * Same Details Steps and example config extracts below   * Same Details Steps and example config extracts below
  
-===== Detailed Steps ===== +==== Detailed Steps ==== 
-==== CUBE Config =====+=== CUBE Config ====
 ==Create Trustpoint for self signed CUBE certificate== ==Create Trustpoint for self signed CUBE certificate==
 <code> <code>
  • vendors/cisco/uc/cube/tls.1617293158.txt.gz
  • Last modified: 2021/04/01 17:05
  • by gerardorourke