I am looking for some help in this issue as it seems hard to properly deploy a PBX behind a watchguard NAT. We tried to wireshark the PBX to see what happens and it seems that there is some port translation problems, like the Audio streams don't get into the proper ports on the PBX and vice-versa. The WatchGuard SIP-ALG supports SIP trunks. I tried to port forward the appropriate ports (5060-5065) and I also tried to use a SIP Proxy (which was a recommandation from watchguard tutorials) without any success. config the SIP ALG is not performing NAT you can use this configuration to apply SIP security. We have a Watchguard X750 that acts as our firewall and Multi-WAN gateway. I looked into this problem and it seems it is related to the firewall and NAT'ing. With the PBX correctly configured, the line registers, can call out, and receive calls, but there is absolutely no audio on both ways. We bought a VOIP line in the intention to use it on our SIP gateway in the PBX. These are all on our internal network so everything worls well. We have a Panasonic KX-TDE100 PBX on our network working well as of now with phones, ip phones and some sip phones. In case the source of the incoming trac must be limited you can create a group of allowed IPs to be allowed under “From.I have a problem at work. 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. It can support both the SIP Registrar and the SIP Proxy when used with a call management system that is external to the Firebox. The WatchGuard SIP-ALG opens and closes the ports necessary for SIP to operate. In this example the name “VANTACT_Services” is given to the Policy Name.ģ. Together, these components manage connections hosted by the call management system. 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. Ubiquiti Edgemax Edgerouter Ubiquiti Unifi Watchguard ZyWALL 5 ZyWALL USG 50/80/100 ZyXEL. 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. Make sure the router you buy supports Disable SIP ALG. 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 the SIP-ALG Action Access Control configuration, you can create a list of users who are allowed to send VoIP network traffic. 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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