Voice over Internet Protocol (VoIP), also known as IP telephony, delivers voice communications via a digital IP network connected to the internet. IP technologies facilitate data delivery services using the same switching & routing mythologies designed for network computers. When multiplexed, voice, fax, SMS, voice-messaging and multimedia data can be transmitted over a broadband public Internet. Rather using a public switched telephone network (PSTN), VoIP systems are essentially ordinary nodes of the network.
VoIP telephone calls vs traditional telephony.
The encoding technology allows the digitization analog voice signals into compressed data packets. The digital data is then transmitted as IP packets over a switched network. Once processed, packets are transported as media streams without any additional specialized equipment.
Protecting data encoding and packet stream transmission
The technology rules for encapsulation and compression, of the audio and video signals, into a data stream for delivery, are called codecs. A functional VoIP infrastructure security software solution can monitor and police packet behavior in the data stream. Technology to detect from denial of service attacks DoS), intrusion or unauthorized internal use can be deployed.
Some of the Challenges in VoIP Security
Business threats to VoIP security must be first understood and analyzed. Once identified, the necessary technical solutions must be presented to guard against threats. Whether it is hardware failure, a software failure or human error, business communications threat scenarios in the information technology environment must be accurately identified.Any VoIP infrastructure security software solutions provide the necessary tools to pinpoint and isolate threats and vulnerabilities throughout the entire transport lifecycle.
VoIP Infrastructure security failure and impact
The impact of the potential risk of a system has been compromised must be measured to identify the impact. The financial loss and recovery cost must reflect and well documented in a realist disaster situation. Damage assessment and recovery should also be taken into account along with the possibility of long-term implications. A properly secured business service involving would a have negative impact on public trust and are sometimes unrecoverable.
The primary threats and attacks to key components
IP vulnerabilities occur primarily when the core IP services have been compromised. Security systems should be hardened against crucial system that verify the Domain Name Server (DNS), and the TCP handshake. Attacks, such as denial-of-service (DoS), unauthorized access, eavesdropping, masquerading, and fraud are the most common when a breach has occurred.
A dashboard that shows VoIP infrastructure security
The software should allow organization metrics to be entered to give a real-world value as on how critical VoIP is the organization. The system should display what critical information is being carried by the system, network, or service at any given time.
Autonomous contact information and communication, to externally managed support technologies and services, such as ISPs or related mechanisms. The security apparatus should automatically alert all essential parties when a failure occurs. The VoIP security software should be capable of monitoring key-performance indicators.
A predetermination of responsibility should be outlined in a well-defined service level agreement (SLA). Simulated test & failures should realistically reflect the cost of downtime and data loss. the VoIP should be able to archive and retrieve on-demand any past security incidents and determined the recovery response time. The supporting infrastructure technologies that are exposed to greatest threats and all personnel with access to these technologies must be highly certified.