Advanced protection for SIP systems
Bluehub SIP Protect defends your VoIP PBX against brute-force, DoS and SIP scanner attacks — automatically. Real-time detection, smart IP blocking and custom access controls keep your service running and your bills predictable.
1,284
Threats blocked
47
IPs banned
126
Active rules
- 203.0.113.42BLOCKEDBrute-force REGISTER
- 198.51.100.7BANNEDRepeat offender
- 192.0.2.18WARNEDSIP scanner pattern
- 203.0.113.99RELEASEDThreat cleared
Allowlist
10.0.0.0/24
Blocklist
203.0.113.42
Protect your VoIP network from costly attacks
SIP attacks can disrupt service, degrade call quality, and lead to significant financial loss through toll fraud. Bluehub SIP Protect is built into the Bluehubcloud PBX platform to defend against these threats — without slowing your team down.
Real-time threat detection & response
SIP Protect monitors live SIP traffic, updates firewall rules automatically and blocks suspicious IP addresses before they can cause harm — using pattern recognition, instant SIP scanner blocking, TFTP brute-force protection and SIP protocol anomaly detection.
Everything you need to lock down SIP
Layered defences that detect, block and learn — so attackers don't get a second chance.
Continuous SIP Traffic Monitoring
Keeps a close watch on all SIP activity to spot unusual patterns before they cause trouble.
Register & Invite Protection
Blocks attempts to gain unauthorised access to your system and keeps your network secure.
Smart IP Blocking
Automatically blocks attacking IPs and removes the block once the threat has stopped.
Custom Access Controls
Create your own allowlist and blocklist settings to match your security needs.
Automatic Permanent Blocking
Permanently bans IPs that show repeated malicious behaviour to stop future attacks.
TFTP Brute-Force Defence
Stops attackers from redirecting auto-provisioning requests or altering configuration.
The attacks SIP Protect stops
From opportunistic scanners to targeted fraud, SIP Protect covers the threat landscape facing modern VoIP systems.
Brute-force registration
Repeated login attempts to crack SIP credentials.
Denial of Service (DoS)
Floods of traffic that disrupt service and call quality.
SIP scanners
Automated probes hunting for exposed SIP endpoints.
SIP spoofing
Impersonating legitimate users to gain unauthorised access.
Protocol anomalies
Malformed SIP packets designed to exploit weaknesses.
Auto-provisioning attacks
Hijacking TFTP setup requests to alter device configs.
- 01Detect anomaly in live SIP traffic
- 02Update firewall rule and block source IP
- 03Monitor for repeat behaviour
- 04Permanently ban or release based on risk
Protection that learns and reacts
Bluehub SIP Protect responds instantly to new threats. Firewall rules update as attacks happen and harmful IPs are blocked. When the risk passes, those IPs are released — so your network stays safe and uninterrupted.
- Pattern recognition across global attack signatures
- Immediate blocking of known SIP scanners
- Dynamic block durations tuned to risk
- Permanent bans for repeat offenders
Stronger defence against auto-provisioning attacks
Auto-provisioning can expose SIP systems to unwanted access if left unprotected. Bluehub SIP Protect adds an extra layer of safety with TFTP brute-force detection that stops attackers from redirecting setup requests or changing configuration details.
Always one step ahead
Our security team continuously studies new attack methods and improves SIP Protect's defences.
Global threat intelligence
Shared signatures across the Bluehubcloud platform mean attacks blocked elsewhere are blocked for you too.
Real-time alerting
See threats as they happen. Tune policies and respond fast from a single console.
Built into Bluehubcloud PBX
SIP Protect ships as part of the Bluehubcloud PBX platform — no extra appliances to deploy, no separate console to learn. Turn it on and let it work.
Protect your business with Bluehub SIP Protect
Keep your Bluehubcloud PBX safe from advanced attacks. Protect your system, avoid financial loss and keep customer confidence intact.