sipPROT is a PBXware and SERVERware module that provides protection from SIP attacks. Brute-force break-in attempts and Denial of Service attacks are quite frequent and an unpredictable threat. Unprotected VoIP PBX systems are very sensitive to this kind of attacks. The most common consequence of this kind of network attack are VOIP service downtime, Call quality issues due to an overloaded network, and Direct financial loss due to network instability. sipPROT’s main purpose is to prevent those attacks.