IP for Telecom Professionals -
Module 3: Advanced Issues

[3-day course, Euro 3,450.- (net) per participant]

Review of the TCP / IP Protocol Stack

• MAC –Layer
  (Ethernet, PPP)
• Address Resolution
  (ARP, RARP, DHCP, DNS, ENUM)
• IP Transport and Control
  (IP, ICMP, UDP, TCP, SCTP)
• IP Routing
  (RIP, OSPF, BGP)
• Applications
  (HTTP, FTP, SMTP, POP3, RTP, H.248, SIP)
• PRACTICE:
  • Introduce and review the architecture of our Test Network
  • Introduce SIP Server functionality and SIP Client Applications

IP Networks as Transport in Telecommuncation

• Signalling Transport (SIGTRAN)
  Detailed Overview, User Adaptation Protocols (M2UA, M3UA, SUA), Security Issues
• IP Tunneling
• Backgrounder
  Overview of Codec Types (Media Codecs, Audio Codecs, Video Codecs)

Voice over IP

• H.248 / MEGACO
  Functions, Protocol Architecture
• Introduction to SIP and SDP
  Frame Types, Messages, Parameters, Message Sequences and Transaction Flows
• PRACTICE:
  • SIP-Session Setup and Release. Recording of the session at our Test-Network. Evaluation of the Traces.

Mobile IP

• Concepts and General Operation (Address Forewarding)
• Home Agents, Foreign Agents, Router Advertisments, Registration Process
• Mobile IP Data Encapsulation (Tunneling), Efficiency and Security Issues

Quality of Service in IP Networks

• The QoS Issue
  What is QoS in IP-Networks
• Approaches and techniques
  (IntServ, DiffServ, Traffic Inspection), Pros and Cons of these techniques.
• QoS in the Link layers
  (QoS in Ethernet-based networks, QoS in ATM-based networks)
• Details of IntServ
  Function, Frame Types, Parameters, Tunnel Setup and Release, Typical Use Case
• Details of DiffServ
  Function, DSCPs, Per Hop Forwarding (PHB), Interaction of DiffServ with IntServ, Traffic Inspection and / or MPLS
• MPLS
  Functions, Terminology, Architecture, Label Switched Paths (LSP), Label Edge Routers (LER), Label Switch Routers (LSR).
• PRACTICE:
  • VoIP sessions / Video-over-IP in our test network.
  • Configuration of QoS parameters
  • Evaluating sessions with and without QoS, discussing consequences.

Security in IP networks

• Spoofing
  Content Alteration, Privacy Violations
• Overview of SSL, IPSec, VPN
• RSA Authentication and Encryption, X.509 Certificates and how they work
• Overview of some Algorithms
  MD-5, SHA-1, DES and 3-DES, AES
• PRACTICE:
  • Authenticated access to the FTP-server in our test network through a hashed predefined password.
• RSA-Authentication and Encryption
  Public Keys and Private Keys, X.509 Certificates, RSAES and RSAEP.
• Secure Socket Layer
  Initialisation, Session Keys, Operation, TLS
• PRACTICE:
  • Recording and evaluation of the setup of an SSL-connection for e-commerce in our test network.
• IPSec and VPN:
  Operation Modes, AH and ESP, IKE, ISAKMP
• PRACTICE:
  • Setting up an IPsec VPN through our test network.
  • Recording and evaluating the involved signalling messages.

v1.6

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