3CX security
3CX security for teams without a dedicated VoIP SOC.
3CX makes telephony accessible, and attackers know it. SipRadar helps you find exposed SIP ports and weak settings, then blocks known fraud networks before they register extensions on your system.
3CX instances are actively scanned
Automated campaigns target default 3CX SIP ports and management interfaces. Toll fraud through compromised extensions can generate massive carrier bills over a single weekend.
Remote audit + continuous blocking
Our scanner checks your public 3CX SIP endpoint without agents. Pair results with SipRadar's real-time blacklist to block attackers at the firewall while you remediate findings.
How SipRadar helps
No-agent remote audit
Verify ownership, then scan for exposed services, TLS configuration, and common 3CX hardening gaps.
Firewall-level blocking
Import SIP threat feeds into your edge firewall or SBC. That is the recommended first line of defense for 3CX.
MSP-friendly monitoring
Active Defense monitors up to 10 customer PBX endpoints with weekly audits and webhook alerts.
Incident-ready exports
PDF audit reports and CSV threat exports for customer communication and compliance records.
Protect 3CX at the network edge
3CX best practice is to restrict SIP to known peers and use strong trunk credentials. SipRadar threat feeds add a dynamic deny layer for known fraud infrastructure worldwide.
FAQ
Frequently asked questions
Common questions about 3CX security and how SipRadar fits your VoIP security stack.
Ask a question →No. We scan and protect from outside your network; no 3CX plugin required.