Phoenix TS

Securing VoIP Networks Training

This training focuses on the skills, tools, and knowledge essential for evaluating vulnerabilities and risk while implementing security solutions in a VoIP work environment.

Course Overview

Our 3-day, instructor-led course is aimed at IT professionals responsible for designing, deploying and securing VoIP networks. It will teach you how to:

Evaluate existing voice services & tools
Determine capability & bandwidth requirements
Integrate with the Public Switched Telephone Network (PSTN)
Adapt legacy phones
Create a Dial Plan
Optimize Quality of Service (QoS) mechanisms
Configure & manage Session Initiation Protocol (SIP)
Integrate voicemail, email & instant messaging

For group training options, please call us at (240) 667-7757 or email promo@phoenixts.com.

Schedule

Currently, there are no public classes scheduled. Please contact a Phoenix TS Training Consultant to discuss hosting a private class at 240-667-7757.

Not seeing a good fit?

Let us know. Our team of instructional designers, curriculum developers, and subject matter experts can create a custom course for you.

Learn more about custom training

Course Outline

Introduction to VoIP Security

The switch leaves the basement
What is VoIP?
VoIP Benefits
Protocols

Asterisk Configuration and Features

What are we trying to accomplish?
What functions does a typical PBX perform?
PBX administration
Gateway interface
API
Dial Plans
Numbering Plans
Other functions
Voicemail and Asterisk PBX
How is VoIP different from Private Telephone Networks?
What Functionality is gained?

The Hardware Infrastructure

Traitional PBX systems
PBX alternatives
VoIP Telephony and Infrastructure

PSTN Architecture

PSTN: What it is and how it works
PSTN: Signal transmission
PSTN Call Flow
PSTN protocol security

H.323 Architecture

The Primary H.323 VoIP Related Protocols
H235 Security Mechanisms

SIP Architecture

Understanding SIP
SIP Functions and Features
Instant Messaging and SIMPLE

Other VoIP Communication Architectures

Skype
Skype Messaging Sequence
H.248
H.248
IAX
IAX Messaging Sequence
MS Live Communication Server 2005

Support Protocols

DNS Architecture
Operation
TFTP
Implications for TFTP
DHCP Protocol
Implication for DHCP
SDP Operation
Implication for SDP
Skinny Specification
Implications for Skinny

Threats to VoIP Communication

Denial of Service or VoIP Service Disruption
Call Hijacking and Interception
H.323-Specific Attacks
SIP-Specific Attacks

Validate Existing Security Infrastructure

Security Policies and Procedures
Physical Security
Server Hardening

Confirm User Identity

802.1x and 802.1 li (WPA2)
Authentication Server
Public Key Infrastructure
Minor Authenticaion Methods

Active Security Monitoring

Network Intrusion Detection Systems
Host-Based Intrusion Detection Systems
Logging
Penetration and Vulnerability Testing

Logically Segregate Network Traffic

VLANS QoS and Traffic Shaping
NAT and IP Addressing
Firewalls
Access Control Lists

IETF Encryption Solutions for VoIP

Suites from the IETF
S/MIME: Message Authentication
TLS: Key Exchange and Signaling Packet Security

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