Issue 2.0
SV9100 Networking Manual
5-9
VPNs can be implemented in hardware or software. Single users, such as
traveling sales personnel, may have a software based VPN client on their laptop
computer. This connects back to the Head Office VPN server. For larger sites, the
VPN is typically implemented using a hardware VPN – this is often incorporated in
to a firewall solution.
The diagram below is example of how a VPN tunnel may be implemented. The
red lines in the diagram show the tunnels that are created through the Internet.
Each network can connect to the others as though they are connected with private
connections (kilostream, etc.), without the issues relating to NAT.
When IP address translation is applied to a VoIP packet, the application fails and
the communication path is broken. VoIP packets contain the IP address
information and the ports used as part of its payload. When NAT is applied, only
the header parameter is changed, not the payload data that affects the process of
data packets within the VoIP switch and terminal.
Figure 5-2 Virtual Private Network (VPN) Example
Internet
ADSL
Router
Firewall/
VPN
ADSL
Router
Firewall/
VPN
AD
SL
AD
SL
DSL / Ca
ble / D
ialup
UNIVERGE SV9100
Head Office LAN
Home Office LAN
Mobile Workers
(Software VPN Client)
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...