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Barracuda Phone System

Step 2 - How to Configure IP Address, Network Settings, and Firewall

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Before configuring the IP address, network settings, and opening your corporate firewall ports, complete Step 1 - How to Set Up the Barracuda Phone System.

Wait for system to fully boot up.

Configure the IP Address and Network Settings

When the administrative console login prompt displays and the power light on the front of the appliance illuminates, use the following steps to physically install the Barracuda Phone System.

Barracuda Phone System


  1. At the Administrative Console login prompt, log in using the credentials: admin/admin
  2. Use the TAB key to move and the ENTER key to select.
  3. Configure the IP address. If you do not have a keyboard and monitor and want to set the IP address, push and hold the Reset button on the front panel to change the IP address as noted:
    • Holding the Reset button for 5 seconds changes the IP address to
    • Holding the Reset button for 8 seconds changes the IP address to
    • Holding the Reset button for 12 seconds changes the IP address to
  4. Configure the subnet mask, default gateway, and optional primary DNS and secondary DNS. (The web interface allows updates to these settings once it is accessible.)
  5. Apply the network settings.

Configure the Corporate Firewall

Many firewall devices have a SIP Application Layer Gateway (ALG) that needs to be disabled. In virtually all cases, a SIP ALG causes VoIP calls to fail. Most SIP endpoints are now "NAT-aware" and can handle NAT/PAT scenarios without the assistance of an ALG in the middle of the data path, so the SIP ALG attempts to fix SIP packets that are not actually broken. Consult the documentation for your specific device to determine how to disable its SIP ALG.

Open the following firewall ports:

21OutYesNoFTP (for system backup)¹
53OutYesYesDomain Name Service (DNS)¹
69In/OutNoYesTFTP (for phone provisioning)¹
80In/OutYesNoRemote administration, phone provisioning inbound¹ / Firmware and documentation updates outbound
443In/OutYesNoSecure remote administration inbound¹ / Firmware and documentation updates outbound
123In/OutNoYesNetwork Time Protocol (NTP)
843In/OutYesNoFlash Policy Server
5060-5070In/OutYesYesSIP signalling ports (soft phones, providers)
7838In/OutYesNoWeb Sockets¹
7839In/OutYesNoWeb Sockets over TLS¹
16384-32768In/OutNoYesRTP media ports
22OutYesNoSupport tunnel / Technical Support²
25OutYesNoEmail notifications and alerts¹
587OutYesNoAlternate email / Submission - Email notifications and alerts¹


¹ These ports are optional depending on network and phone configuration. If you are unsure, please contact Technical Support.

² Access via port 22/tcp outbound is required if technical support is requested.


If your firewall is configured to control outgoing traffic, allowing outbound access to will facilitate the download of certain updates or patches to your system.


Continue with Step 3 - How to Configure Basic System Settings.