![]() ![]() Then, from the Diagnostic log level for this proxy action drop-down list, select a log level: To specify the diagnostic log level for all proxy polices that use this proxy action, select this check box. Override the diagnostic log level for proxy policies that use this proxy action To create accurate reports on SIP traffic, you must select this check box. To send a log message for each connection request managed by the SIP-ALG, select this check box. To specify a different time interval, type or select the time in seconds in the Registration expires after text box. The default value is 180 seconds (three minutes) and the maximum value is 600 seconds (ten minutes). Specify the elapsed time interval before the SIP-ALG rewrites the SIP registration value that VoIP phones and PBX systems use to update their registration. To specify a different time interval, type or select the time in seconds in the Idle media channels text box. When no data is sent for a specified amount of time on a VoIP audio, video, or data channel, your Firebox closes that network connection. To remove the false user agent, clear the text box. To identify outgoing SIP traffic as a client you specify, type a new user agent string in the Rewrite user agent as text box. ![]() The Firebox sends a log message when it denies a media session above this number. The default value is two sessions and the maximum value is four sessions. To restrict the maximum number of audio or video sessions that can be created with a single VoIP call, type or select a value in this text box.įor example, if you set the number of maximum sessions to one and participate in a VoIP call with both audio and video, the second connection is dropped. Set the maximum number of sessions allowed per call To prevent attackers from stealing user information from VoIP gatekeepers protected by your Firebox, select this check box. We recommend that you select this option unless you have an existing VoIP gateway device that performs topology hiding. This feature rewrites SIP and SDP (Session Description Protocol) headers to remove private network information, such as IP addresses. While these headers often indicate an attack on your Firebox, you can disable this option if necessary for your VoIP solution to operate correctly. To deny malformed or extremely long SIP headers, select this check box. SIP-ALG Action general settings configuration in Policy Manager In case the source of the incoming trac must be limited you can create a group of allowed IPs to be allowed under “From.SIP-ALG Action general settings configuration in Fireware Web UI Note: In this example, “Any External” is used, therefore any host can establish a connection on the public IP Address of the PBX. The Firewall policy should look like the screenshot below: The SNAT created previously, will be listed (in this example “ VANTACT_SNAT”). Under the drop-down menu select “Static NAT”ġ2. Under the drop-down menu select “Any External” and “OK”ġ0. “Single Port” or “Port Range” can be selected. Use the “Add” button below the “Protocols” to add a custom list of ports which shall be allowed to connect to the PBX. In this example the name “VANTACT_Ports” is given to the “Policy Template”ĥ. As a “Policy Type” select “Custom” and click “Add.”Ĥ. In this example the name “VANTACT_Services” is given to the Policy Name.ģ. Navigate under Firebox® > Firewall > Firewall Policies and click “Add Policy”Ģ. Step 2: Create Firewall Policy After setting up the static NAT, a Firewall Policy must be configured:ġ. Click “Save” and the SNAT Policy is now active. Enter the Internal/Private IP address of the PBX and click OK (in this example the internal/private IP of PBX is 192.168.4.40).ħ. In this example the external IP of the device is 192.168.3.55 which should be used to NAT inbound trac to the PBX.Ħ. Select the “External Static IP” under the drop-down menu. In this example the name “VANTACT_SNAT” is given to the SNAT Policy.ĥ. Navigate under Firebox® UI > Firewall > SNAT and click “Add”Ģ. You can verify if your router is SIP ALG ENABLED by downloading and running our SIP ALG TESTER Programįirst, the Static NAT must be configured in order to forward the incoming traffic from the Static Public IP, to the local IP of the PBX:ġ. ![]()
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