Stop SIP attacks before they reach your PBX
Automatic firewall with geographic filtering, kernel-level protection, dynamic whitelist — complete security for FreePBX.
The Problem
Internet-exposed PBX systems are constantly attacked — SIP scanning, extension brute force, toll fraud. The default firewall is not enough.
The Solution
PBX Firewall adds an intelligent protection layer: country-based filtering, automatic IP blocking, dynamic whitelist for legitimate trunks.
Security Features
Complete network-level protection
GeoFilter — Country Filtering
Block or allow SIP traffic by country. 250+ countries, auto-updated geo databases.
Kernel-Level Filtering
Maximum performance with kernel-level filtering for large IP sets. Optimized rules for SIP traffic.
Whitelist/Blacklist Profiles
Create profiles with whitelist (allow only) or blacklist (block only) mode. Per-PBX assignment.
Map Dashboard
Live visualization of attacks on a world map. Real-time blocked packets counter.
Dynamic Whitelist
SIP trunk IPs are automatically whitelisted. Auto-update on DNS changes.
Instant Protection
Rules apply instantly, no PBX restart needed. Kernel-level blocking in milliseconds.
How It Works
Protection in three layers
License & Install
Obtain your license from the portal and install the PBXTools agent on your PBX system.
Configure Profile
Choose the mode (whitelist/blacklist), select allowed countries and configure exceptions.
Apply Rules
GeoFilter generates filtering rules per country and applies them instantly at network level.
Live Monitoring
The dashboard shows blocked attacks, geographic source and real-time statistics.
Compatible with
centraletelefonice.ro 
IT4All PBX 
FreePBX 
VitalPBX 
FusionPBX 
Asterisk 
FreeSWITCH 
Issabel 
Yeastar 
3CX 
Cisco 
Grandstream 
Sangoma 
Mitel 
Elastix 
Xorcom … and practically any standard SIP-compatible PBX.
Frequently Asked Questions
Which PBX systems does it work with?
Does it affect PBX performance?
Can I block only specific countries?
What happens with SIP trunks?
💡 Got a feature or integration idea?
Help us build the ideal product for your business.
⚠️ This application is currently available only for centraletelefonice.ro subscribers. It will be available to the public soon.
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2-minute installation. Immediate protection against SIP attacks.
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