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Full Answer
How do I set up the FreePBX firewall?
Once you have purchased your FreePBXhosting.com VPS or Dedicated Server you will need to go through the FreePBX Getting Started Wizard to register your PBX at the FreePBX.org portal and activate your free modules. After you complete the Getting Started Wizard, you will want to set up the FreePBX firewall.
Why is it important for FreePBX to have my IP address?
It is important for FreePBX to have this information so that it can adjust the SIP headers to use your external IP address when it is contacting extensions outside of your local network. Open your browser and access the FreePBX GUI. Click on "Tools," and then "Asterisk SIP Settings."
How do I forward my ports to FreePBX?
These ports must be forwarded to your FreePBX System using your router/firwall configuration. How to do this varies widely depending on the firewall or equipment that you are using. It is commonly referred to as Port Forwarding or maybe Destination NAT (DNAT).
How do I set up remote PBX extensions?
The four key considerations in setting up remote extensions are: 1. Ensure that your PBX is as secure as it can possibly be 2. Configure Asterisk so that it knows which IP addresses are inside your network and which ones are on the public internet 3. Forward the required ports from your firewall to your PBX 4.
What is a firewall?
The Firewall is the border element between the Internet (or untrusted network zones) and Local Area Networks (or trusted zones). The remote phone is located on a remote network across the Internet. The firewall is monitoring network traffic and decides whether to allow or block specific traffic based on a defined set of security rules.
What is the application of security solutions?
The application of security solutions involves providing a firewall solution that is used to define the remote phone to IP‑PBX relationship between various networks using VoIP application layers, file provisioning, and other services, while ensuring signaling and media are secure. Meanwhile, remote phones most often are located behind other firewalls, presenting additional communication issues.
What is a firewall in FreePBX?
FreePBX’s included Firewall module provides admins with a way to have control over who is allowed to access various services on the system. The Firewall runs with a ‘Deny-By-Default’ type of configuration. Ideally, everything should be blocked except for the Networks you provide access to. For most setups, Interfaces will be assigned to the Internet zone, and permitted Network/Hosts are added and assigned with the Local zone. Additional options found on the Firewall settings page also include:
What is a blacklist in FreePBX?
Blacklist – The FreePBX Firewall also has a section to add entries to a Blacklist. As mentioned, the recommended overall approach is to block everything, and only provide access to those that need it. However there are still times when a Blacklist is useful, such as an environment relying on the Responsive Firewall.
How to prevent phone from accessing WAN?
It is recommended to prevent your phones from having access to the WAN unless necessary. Consider setting a Maximum Channels limit on your trunks’ settings. Backups should be stored securely. Wherever you decide to store your system backups, make sure it is secure, especially if you are offloading them to another system.
Is TFTP enabled in Internet Zone?
Note: It is heavily recommended that the TFTP, and HTTP (s) Provisioning services are never set to be enabled for the Internet zone, which could leave them ‘wide-open’. Phone configuration files should be considered highly confidential.
Should responsive firewall be enabled?
Responsive Firewall should only be enabled if necessary. For most systems, all connecting source addresses are known, and a proper Network/Host entry is set up to control access.
Should admin access be allowed to specific networks?
There are also some general principles that should always be kept in mind. Admin access should only be allowed to specified networks/addresses. While a strong password is always recommended, it should never be relied on as the main form of security.
How to install SIP on FreePBX?
Open your browser and access the FreePBX GUI. Click on "Tools," and then "Asterisk SIP Settings.". If this module is not available on your installation of FreePBX, you can install it using the "Module Admin" module. Under NAT Settings, click "Auto Configure.".
How to change port 5060 on FreePBX?
If the field is left blank, the FreePBX should default to port 5060. Click "Submit Changes" at the bottom of the screen, and then click the orange "Apply Configuration Changes" bar at the top of the screen.
How to change RTP port?
To change the RTP Media Ports, you have to edit an Asterisk file from the command line. Open a command prompt on your machine (either by sitting in front of your machine or by using the FreePBX Java SSH module) and type the following: In the file, you'll see the options for the low and high ports used by Asterisk.
What is fail2ban firewall?
IPTables is a firewall and can be configured to only allow certain traffic into your PBX. Fail2Ban is a program that monitors your PBX logs and temporarily bans people who are attempting to guess the passwords.
What port is used for SIP?
Third, you may wish to consider changing the default SIP Signaling Port from 5060 to an alternative. Port 5060 is widely used for VOIP services, and there are a number of hacking programs in the wild that scan for computers that have port 5060 open, and then attempt hack into any available PBX. If these hacking attacks succeed in obtaining a valid user/extension number and password, the hacker can use your system to place calls at your expense. Even if they don't succeed in obtaining a valid password, they can interfere with legitimate users (or crash asterisk) and thus cause your PBX to become inoperative.
What happens if a PBX is hacked?
Even if they don't succeed in obtaining a valid password, they can interfere with legitimate users ( or crash asterisk) and thus cause your PBX to become inoperative.
How many ports are needed for RTP?
A range of 10000 ports available for RTP Media is often unnecessarily large for most small systems, because one call requires only 4 active ports. Thus, you might consider narrowing the range of ports used for RTP Media.
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