User guide

Several factors related to the network setup, including the DSView 3 software database
replication schedule and methods of device access, can affect the speed of a multi-site VPN
network. The trade-off must be made based on the network setup.
Frequent replication of the DSView 3 software database will increase WAN/VPN traffic but
provide steady data reception at the local sites. Infrequent database replication made at the
various sites decreases the WAN/VPN traffic but delays the reception of changes at the local
site.
In addition, the methods used to access devices affects network speed. VPN access of a
managed appliance is always slower than local access.
The DSView 3 management software supports VPNs that provide full transparency for IP
addresses, as well as ports between sites and many VPNs that perform network address
translation (NAT) between sites. For example, the VPN in Figure 4.2 could use NAT if Site A
and Site B are separate companies that merged but have not resolved their IP addresses. See
NAT Devices on page 59.
Figure 4.2: DSView 3 Software System on a VPN
Table 4.5: Typical DSView 3 Software System Firewall Configuration Descriptions
Number Description Number Description
1 DSView 3 Software Client 7 Replication
2 Firewall 8 VPN
58 DSView® 3 Software Installer/User Guide