[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"doc-seo-202635-105":3,"detail-sidebar-cat-0-en-105":73,"doc-detail-202635-en":122},{"code":4,"msg":5,"data":6},0,"ok",{"site_id":7,"language":8,"slug":9,"title":10,"keywords":11,"description":12,"schema_data":13,"social_meta":66,"head_meta":68,"extra_data":70,"updated_unix":72},105,"en","voip-components-common-threats-defenses","VOIP Components - Common Threats - Defenses","","Notes cover VoIP infrastructure components and how they depend on network services and transport quality. The material links critical infrastructure functions such as DHCP, DNS, delay, bandwidth, and packet delivery to voice performance using QoS and service level agreements. It also outlines common attack threats including DoS, eavesdropping, and interception/modification, explains typical signs and sources of DoS, and summarizes defenses such as network segmentation, QoS, hardening, patching, and proactive 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\nSpirit AeroSystems  \n􀀁 VOIP Components  \n􀀁 Common Threats  \n􀀁 How Threats are Used  \n􀀁 Future Trends  \n􀀁 Provides basic network connectivity and transport  \n􀀁 Infrastructure services (DHCP, DNS, etc.) provide critical services for the VOIP systems  \n􀀁 Delay, bandwidth, and packet delivery are dictated by these systems  \n􀀁 Quality of Service (QoS)  \n􀀁 Service Level Agreements (SLA)  \n􀀁 Provides compartmentalization of information systems  \n􀀁 Provides conversion of calls between the data network and the Public Switched Telephone Network (PTSN)  \n􀀁 Primarily uses trunks for PSTN connectivity  \n􀀁 Can be used to relay call signaling to Internet VOIP providers  \n􀀁 Can provide VOIP termination from systemson the Internet  \n􀀁 Performs the functions of a traditional PBX and is the core of the VOIP system  \n􀀁 Maps internal extensions  \n􀀁 Routes calls to VOIP gateways, internal extensions, or external numbers  \n􀀁 Tracks call utilization  \n􀀁 Controls call flow on the network  \n􀀁 Cisco Call Manager uses Skinny Client Control Protocol (SCCP) for signaling between the Call Manager and phones  \n􀀁 The Call Manager is an application sitting on a traditional Microsoft Windows or Linux platform  \n􀀁 The VOIP phone provides the user the entry point into the phone system  \n􀀁 Uses various access medias  \n􀀁 Wired  \n􀀁 Wireless  \n􀀁 Softphone  \n􀀁 Encodes voice communications using a codec for encoding and compression  \n􀀁 Contacts the Call Manager for configuration and management  \n􀀁 Initial configuration via TFTP  \n􀀁 Reliant on the Call Manager for functionality  \n􀀁 Denial of Service (DoS)  \n􀀁 Eavesdropping  \n􀀁 Interception/Modification  \n􀀁 DoS attacks are common  \n􀀁 Unintentional DoS (most common)  \n􀀁 General Worm/Malware  \n􀀁 Intentional Insider  \n􀀁 Intentional Outside  \n􀀁 Signs of a DoS Attack  \n􀀁 Poor network performance beyond VOIP  \n􀀁 Inability to make calls  \n􀀁 Phone service suddenly stops  \n􀀁 Massive traffic flows  \n􀀁 IPS/IDS alerts   \n􀀁 Flooding  \n􀀁 Traditional attacks such as SYN Flooding, Malformed packets, etc  \n􀀁 Distributed Denial of Service Attack using ‘Botnet’ to attack public facing services  \n􀀁 Weaknesses in the network infrastructure equipments underlying operating system or configuration  \n􀀁 Mis-configured systems that communicate on the network  \n􀀁 Goal is to make voice quality so low it is unusable  \n􀀁 Defenses  \n􀀁 Network segmentation  \n􀀁 Implementing QoS  \n􀀁 Hardening infrastructure to NSA or CIS standards  \n􀀁 Keeping network Infrastructure patched  \n􀀁 Proactive network monitoring and management","cbCailWWztvSVVB4","https://ap.wps.com/l/cbCailWWztvSVVB4","pdf",2337597,37,"English","# VOIP Components\n## Common Threats\n## Defenses","[{\"question\":\"What defenses are recommended to reduce VoIP-related threats?\",\"answer\":\"Recommended defenses include network segmentation, implementing QoS, hardening infrastructure to NSA or CIS standards, keeping infrastructure patched, and proactive network monitoring and management.\"}]","VOIP Components - Common Threats - Defenses | PDF",93]