![]() If the SIP Proxy Server is being used as a B2BUA, enable the Enable SIP Back-to-Back User Agent (B2BUA) support setting. This option is not selected by default.Įnabling this checkbox might open your network to malicious attacks caused by malformed or invalid SIP traffic. Selecting Permit non-SIP packets on signaling port enables applications such as Apple iChat and MSN Messenger, which use the SIP signaling port for additional proprietary messages. Select a Service Object from Perform transformations to TCP/UDP port(s) in Service Object.To perform SIP transformations on TCP-based SIP sessions, select Enable SIP Transformation on TCP connections.When Enable SIP Transformations is selected, the other options become available. SIP Transformations works in bi-directional mode, meaning messages are transformed going from LAN to WAN and vice versa. In general, you should select Enable SIP Transformations unless there is another NAT traversal solution that requires this feature to be turned off. NAT translates Layer 3 addresses, but not Layer 7 SIP/SDP addresses, which is why you need to select Enable SIP Transformations to transform the SIP messages. Control and open up the RTP/RTCP ports that need to be opened for SIP session calls to happen.Enable the Security Appliance to go through each SIP message and change the private IP address and assigned port.If your SIP proxy is located on the public (WAN) side of the Security Appliance and SIP clients are on the LAN side, the SIP clients by default embed/use their private IP address in the SIP/Session Definition Protocol (SDP) messages that are sent to the SIP proxy hence, these messages are not changed and the SIP proxy does not know how to get back to the client behind the Security Appliance. You need to check this setting when you want the Security Appliance to do the SIP transformation. Transform SIP messages between LAN (trusted) and WAN/DMZ (untrusted). If you are not configuring SIP transformations, go to Step 12.Įnable SIP Transformations is not selected by default.Be sure to configure a firewall rule to control SIP transformations as described in SonicOS/X Policies. Use firewall Rule-based control to enable SIP Transformations.Use global control to enable SIP Transformations.In the SIP Settings section, choose whether to enable SIP transformation globally or by firewall rule: Content Filtering Client Control access to unwanted and unsecure web content.Capture Client Stop advanced threats and rollback the damage caused by malware.Cloud Firewall (NS v) Next-generation firewall capabilities in the cloud.Cloud App Security Visibility and security for Cloud Apps.Email Security Protect against today’s advanced email threats.Switches High-speed network switching for business connectivity.Wireless Access Points Easy to manage, fast and secure Wi-FI.Secure Mobile Access Remote, best-in-class, secure access.Cloud Edge Secure Access Deploy Zero-Trust Security in minutes. ![]()
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