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Assessment Title
Rule Text
The Session Border Controller (SBC) must be configured to only process packets authenticated from an authorized source within the DISN IPVS network.
Description
Discussion Text
The function of the SBC is to manage SIP and AS-SIP signaling messages. The SBC also authenticates SIP and AS-SIP signaling messages, ensuring they are from an authorized source. DoD policy dictates that authentication be performed using DoD PKI certificates. This also applies to network hosts and elements. SIP and AS-SIP are not a secure protocols. The information passed during a call session is in human readable plain text. To secure SIP and AS-SIP, TLS is used. TLS is PKI certificate based and is used for AS-SIP message encryption, authentication, and integrity validation.
NOTE: Authentication is provided by validating the sending appliance’s public PKI certificate used to establish the TLS session. AS-SIP messages are not sent until the authenticated TLS session is established.
NOTE: Authentication is provided by validating the sending appliance’s public PKI certificate used to establish the TLS session. AS-SIP messages are not sent until the authenticated TLS session is established.
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