Issue 2.0
5-8
Network Design Considerations
4.3 Virtual Private Network (VPN) Tunnelling
A Virtual Private Network is a private data network that maintains privacy through
using a tunneling protocol and security procedures. Allowing for remote networks
(including VoIP devices), which reside behind NATs and/or Firewalls to
communicate freely with each other. In UNIVERGE SV9100 VoIP networks,
implementation of VPNs can resolve the issues with NAT that are described in the
previous section.
The idea of the VPN is to connect multiple networks together using public (i.e.,
Internet) based connections. This type of connection is ideal for those commuters,
home workers, or small branch offices needing connectivity into the corporate
backbone. It is possible to connect these remote networks together using private
links (such as leased lines, ISDN, etc.) but this can be very expensive and there is
now a high demand for low cost Internet connectivity.
Companies today are exploring the use of VPN for a variety of connectivity
solutions, such as:
Remote User to Corporate Site VPN
Allows employees to use their local ISP fastest connection such as cable
modems, DSL, and ISDN. For traveling users, all they need to do is dial into
their ISP local phone number.
Site-to-site VPN
Allows companies to make use of the Internet for the branch-to-branch
connections, cutting the cost of the expensive point to point leased line service.
Extranet
Extranet describes one application using VPN technology. The concept allows a
company and a vendor/supplier to access network resources at each site. For
example, a customer may have access to a suppliers intranet for access to
product information.
Applications
Rx Port
UNIVERGE SV9100
Programming
PC Programming
7
DHCP Server
67
SIP MLT Listening Port
5080
10-46-06
SIP Trunk Listening Port
5060
10-29-04
SIP Single Line Stations
5070
84-20-01
Realtime Transport Protocol
10020
84-26-02
Realtime Transport Control
Protocol (RTCP)
10021
84-26-03
Summary of Contents for Univerge SV9100
Page 1: ...Networking Manual A50 035910 004 AU Issue 2 0...
Page 20: ...xviii Table of Contents Issue 2 0...
Page 26: ...xxiv List of Figures Issue 2 0...
Page 33: ...Book 1 SV9100 K CCIS...
Page 49: ...Issue 2 0 1 16 General Information US Only Figure 1 15 Circuit Identification Codes CIC...
Page 53: ...Issue 2 0 1 20 General Information US Only...
Page 61: ...Issue 2 0 2 8 Hardware Installation US Only...
Page 195: ...Issue 2 0 4 116 Features and Specifications...
Page 242: ...Book 2 SV9100 IP Networking...
Page 256: ...Issue 2 0 2 12 IP Networking...
Page 312: ...Issue 2 0 4 48 Programming...
Page 376: ...Issue 2 0 6 30 SIP Trunking...
Page 391: ...Issue 2 0 7 14 H 323 Trunking...
Page 467: ...Issue 2 0 8 76 IP Multiline Station SIP...
Page 551: ...Issue 2 0 10 64 SV9100 NetLink Conditions None Feature Cross Reference None...
Page 567: ...Issue 2 0 10 80 SV9100 NetLink Conditions None Feature Cross Reference None...
Page 579: ...Issue 2 0 11 6 NAPT...
Page 580: ...Issue 2 0 SV9100 Networking Manual 11 7...
Page 581: ...Issue 2 0 11 8 NAPT...
Page 582: ...Issue 2 0 SV9100 Networking Manual 11 9...
Page 583: ...Issue 2 0 11 10 NAPT...
Page 584: ...Issue 2 0 SV9100 Networking Manual 11 11...
Page 595: ...Issue 2 0 12 4 All DSP Busy Indication...
Page 671: ...Issue 2 0 13 76 AspireNet Conditions None Feature Cross Reference None...
Page 685: ...Issue 2 0 13 90 AspireNet Department Calling Flexible System Numbering Intercom...
Page 707: ...Issue 2 0 13 112 AspireNet Default Trunk Port Number Name 1 Line 001 2 Line 002 400 Line 400...
Page 713: ...Issue 2 0 13 118 AspireNet Department Calling...
Page 765: ...Issue 2 0 13 170 AspireNet...