Security Configuration - TLS Profile

Use the TLS Profile window to create and configure profiles for implementing the Transport Layer Security (TLS) protocol for use with SIP over TLS. TLS is an IETF protocol for securing communications across an untrusted network. Normally, SIP packets travel in plain text over TCP or UDP connections; Secure SIP is a security measure that uses TLS, the successor to the Secure Sockets Layer (SSL) protocol.

To add TLS policy to the SBC you configure a TLS profile. The TLS profile is assigned to the SIP signaling port and controls behavior of all TLS connections established on that signaling port. An instance of a TLS profile called defaultTlsProfile is present by default, and is used by default by each SIP signaling port; however, additional TLS profile instances may be created and used instead. The settings within the defaultTlsProfile may be modified. Also, the supported transport protocols for the SIP signaling port must be set to allow SIP over TLS over TCP.

To View TLS Profiles

On the SBC main screen, go to Configuration > System Provisioning > Security Configuration > TLS Profile. 

To Create a TLS Profile

To create a new TLS Profile:

1. Click New TLS Profile. 

   

2. Use the following table to configure the options and then click Save. 

   Parameter	Description
   Name	The name assigned to this Transport Layer Security (TLS) profile. Must be 1 - 23 characters. You can create a maximum of 16 TLS profiles.
   App Auth Timer	Specifies the higher layer authentication timer in seconds. Must be 1-60 seconds. The default value is 5.
   Handshake Timer	Specifies the time in which the TLS handshake must be completed. The timer starts when the TCP connection is established. Must be 1 - 60 seconds; default is 5.
   Session Resume Timer	Specifies the TLS session resumption period for which cached sessions are retained (in seconds). TLS allows successive connections to be created within one TLS session and the resumption of a session after a TLS connection is closed or after a server card failover, without repeating the entire authentication and other setup steps for each connection, except when the space must be reclaimed for a new session. Must be 0 - 86,400 seconds; default is 3600.
   Cipher Suite1	Use this parameter to specify the first TLS Cipher Suite choice for this profile. Nosuite Rsa-with-aes-128-cbc-sha (default) – Confidentiality cipher and mode for the TLS Record protocol. Rsa-with-aes-128-cbc-sha-256 – Confidentiality cipher and mode for the TLS Record protocol with SHA-256 as the hash function. Rsa-with-aes-256-cbc-sha – Confidentiality cipher and mode for the TLS Record protocol with AES 256 encryption.   Rsa-with-aes-256-cbc-sha-256* – Confidentiality cipher and mode for the TLS Record protocol with AES 256 encryption and SHA-256 as the hash function. Rsa-with-null-sha – The integrity cipher used for the TLS Record protocol.  Tls_ecdh_ecdsa_with_aes_256_cbc_sha384** – Confidentiality cipher and mode for TLS Record with AES256 GCM and SHA384 as hash function. Tls_ecdh_ecdsa_with_aes_256_gcm_sha384** – Confidentiality cipher and mode for TLS Record with AES256 CBC and SHA384 as hash function. Tls_ecdhe_rsa_with_aes_256_cbc_sha384* – Confidentiality cipher and mode for the TLS Record protocol using ECDHE (Elliptic Curve Diffie-Hellman key Exchange). tls_ecdhe_rsa_with_aes_128_cbc_sha  – Confidentiality cipher and mode for the TLS Record protocol using ECDHE (Elliptic Curve Diffie-Hellman key Exchange) with AES128 CBC and SHA as hash function. tls_ecdhe_rsa_with_aes_128_gcm_sha256 – Confidentiality cipher and mode for the TLS Record protocol using ECDHE (Elliptic Curve Diffie-Hellman key Exchange) with AES128 GCM and SHA as the hash function. tls-ecdhe-rsa-with-aes-256-gcm-sha-384* – Confidentiality cipher and mode for the TLS Record protocol using ECDHE (Elliptic Curve Diffie-Hellman key Exchange) with AES256 GCM and SHA384 as the hash function. tls_rsa_with_aes_128_gcm_sha256 – Confidentiality cipher and mode for the TLS Record protocol with AES 128 GCM encryption and SHA-256 as the hash function. tls_rsa_with_aes_256_gcm_sha384 – Confidentiality cipher and mode for the TLS Record protocol with AES 256 GCM encryption and SHA-384 as the hash function. * To use this cipher, TLS version 1.2 must be enabled in the TLS Profile. ** To use this cipher, TLS version 1.2 must be enabled in the TLS Profile and SSL certificates must be created using ECC keys. NOTE: When Fips-140-2 mode is enabled, Rsa-with-null-sha should not be used. Note SBC releases 5.1, 6.2 and 7.2 are officially FIPS-compliant.
   Cipher Suite2	Use this parameter to specify the second TLS Cipher Suite choice for this profile. Nosuite Rsa-with-aes-128-cbc-sha (default) – Confidentiality cipher and mode for the TLS Record protocol. Rsa-with-aes-128-cbc-sha-256 – Confidentiality cipher and mode for the TLS Record protocol with SHA-256 as the hash function. Rsa-with-aes-256-cbc-sha – Confidentiality cipher and mode for the TLS Record protocol with AES 256 encryption.   Rsa-with-aes-256-cbc-sha-256* – Confidentiality cipher and mode for the TLS Record protocol with AES 256 encryption and SHA-256 as the hash function. Rsa-with-null-sha – The integrity cipher used for the TLS Record protocol.  Tls_ecdh_ecdsa_with_aes_256_cbc_sha384** – Confidentiality cipher and mode for TLS Record with AES256 GCM and SHA384 as hash function. Tls_ecdh_ecdsa_with_aes_256_gcm_sha384** – Confidentiality cipher and mode for TLS Record with AES256 CBC and SHA384 as hash function. Tls_ecdhe_rsa_with_aes_256_cbc_sha384* – Confidentiality cipher and mode for the TLS Record protocol using ECDHE (Elliptic Curve Diffie-Hellman key Exchange). tls_ecdhe_rsa_with_aes_128_cbc_sha  – Confidentiality cipher and mode for the TLS Record protocol using ECDHE (Elliptic Curve Diffie-Hellman key Exchange) with AES128 CBC and SHA as hash function. tls_ecdhe_rsa_with_aes_128_gcm_sha256 – Confidentiality cipher and mode for the TLS Record protocol using ECDHE (Elliptic Curve Diffie-Hellman key Exchange) with AES128 GCM and SHA as the hash function. tls-ecdhe-rsa-with-aes-256-gcm-sha-384* – Confidentiality cipher and mode for the TLS Record protocol using ECDHE (Elliptic Curve Diffie-Hellman key Exchange) with AES256 GCM and SHA384 as the hash function. tls_rsa_with_aes_128_gcm_sha256 – Confidentiality cipher and mode for the TLS Record protocol with AES 128 GCM encryption and SHA-256 as the hash function. tls_rsa_with_aes_256_gcm_sha384 – Confidentiality cipher and mode for the TLS Record protocol with AES 256 GCM encryption and SHA-384 as the hash function. * To use this cipher, TLS version 1.2 must be enabled in the TLS Profile. ** To use this cipher, TLS version 1.2 must be enabled in the TLS Profile and SSL certificates must be created using ECC keys. NOTE: When Fips-140-2 mode is enabled, Rsa-with-null-sha should not be used.
   Cipher Suite3	Use this parameter to specify the third TLS Cipher Suite choice for this profile. Nosuite Rsa-with-aes-128-cbc-sha (default) – Confidentiality cipher and mode for the TLS Record protocol. Rsa-with-aes-128-cbc-sha-256 – Confidentiality cipher and mode for the TLS Record protocol with SHA-256 as the hash function. Rsa-with-aes-256-cbc-sha – Confidentiality cipher and mode for the TLS Record protocol with AES 256 encryption.   Rsa-with-aes-256-cbc-sha-256* – Confidentiality cipher and mode for the TLS Record protocol with AES 256 encryption and SHA-256 as the hash function. Rsa-with-null-sha – The integrity cipher used for the TLS Record protocol.  tls_ecdh_ecdsa_with_aes_256_cbc_sha384** – Confidentiality cipher and mode for TLS recode with AES256 GCM and SHA384 as hash function. tls_ecdh_ecdsa_with_aes_256_gcm_sha384** – Confidentiality cipher and mode for TLS recode with AES256 CBC and SHA384 as hash function.  Tls_ecdhe_rsa_with_aes_256_cbc_sha384* – Confidentiality cipher and mode for the TLS Record protocol using ECDHE (Elliptic Curve Diffie-Hellman key Exchange). tls_ecdhe_rsa_with_aes_128_cbc_sha  – Confidentiality cipher and mode for the TLS Record protocol using ECDHE (Elliptic Curve Diffie-Hellman key Exchange) with AES128 CBC and SHA as hash function. tls_ecdhe_rsa_with_aes_128_gcm_sha256 – Confidentiality cipher and mode for the TLS Record protocol using ECDHE (Elliptic Curve Diffie-Hellman key Exchange) with AES128 GCM and SHA as the hash function. tls-ecdhe-rsa-with-aes-256-gcm-sha-384* – Confidentiality cipher and mode for the TLS Record protocol using ECDHE (Elliptic Curve Diffie-Hellman key Exchange) with AES256 GCM and SHA384 as the hash function. tls_rsa_with_aes_128_gcm_sha256 – Confidentiality cipher and mode for the TLS Record protocol with AES 128 GCM encryption and SHA-256 as the hash function. tls_rsa_with_aes_256_gcm_sha384 – Confidentiality cipher and mode for the TLS Record protocol with AES 256 GCM encryption and SHA-384 as the hash function. * To use this cipher, TLS version 1.2 must be enabled in the TLS Profile. ** To use this cipher, TLS version 1.2 must be enabled in the TLS Profile and SSL certificates must be created using ECC keys. NOTE: When Fips-140-2 mode is enabled, Rsa-with-null-sha should not be used.
   Allowed Roles	Specifies which role the SBC 5000 series will act in for this TLS profile:    clientandserver (default)  server
   Auth Client	Indicates whether or not a TLS client is forced to authenticate itself within TLS. If set to false, the client is not required to authenticate itself at the TLS layer but must complete authentication within a higher-lever protocol after the TLS connection is established (i.e. SIP registration):   true (default)   false
   Client Cert Name	Specifies the name of the default Client Certificate to be used by this TLS profile, created using the SECURITY PKI configuration object. Must be 1-23 characters or none.
   Server Cert Name	Specifies the name of the Server Certificate to be used by this TLS profile, created using the SECURITY PKI configuration object. Must be 1-23 characters or none.
   Acceptable Cert Validation Errors	Use this parameter to specify if certificate chain validation errors are acceptable while validating the peer certificate. Invalid Purpose  none (default)
   Ocsp Profile Name	Specifies the name of OCSP profile object referenced by TLS profile.
   V1_0	TLS protocol version 1.0. Disabled Enabled (default)
   V1_1	TLS protocol version 1.1. Disabled Enabled (default)
   V1_2	TLS protocol version 1.2. Disabled Enabled (default)
   Suppress Empty Fragments	If enabled, SBC will not insert empty fragments while sending packets on TLS over TCP connection. The options are: Disabled (default) Enabled
   Peer Name Verify	If enabled, the SBC verifies the value of the parameter TLS Peer Name. For details on TLS Peer Name, refer to Trunk Group - SIP Trunk Group. Disabled (default) Enabled
   Hash Type	Specifies the type of TLS hash function allowed for TLS sessions governed by the specified TLS profile. The options are: Md5 Sha1(default) Sha224 Sha256 Sha384 Sha512

To Edit a TLS Profile

To edit a TLS Profile:

1. Click the radio button next to the specific TLS Profile name. 
2.  Make the required changes and click Save.

To Copy a TLS Profile

To copy a TLS Profile and make any minor changes:

1. Click the radio button next to the specific TLS Profile to copy.
2. Click Copy TLS Profile. 
3. Make any required changes and click Save.

To Delete a TLS Profile

To delete a TLS Profile:

1. Click the radio button next to the specific TLS Profile that you want to delete.
2. Click the Delete icon (X) at the end of the row. 
3. Confirm the deletion when prompted.