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Router
Router
PC
Recorder
IP address: 192.168.1.1
Subnet mask: 255.255.255.0
IP address: 192.168.1.100
Subnet mask: 255.255.255.0
Default gateway: 192.168.1.1
* Stands for Wide Area Network
WAN*
IP address: 192.168.0.1
Subnet mask: 255.255.255.0
IP address: 192.168.0.250
Subnet mask: 255.255.255.0
Default gateway: 192.168.0.1
Switching hub
Firewall
PC
Router Router
Recorder
IP address: 192.168.1.1
Subnet mask: 255.255.255.0
IP address: 192.168.1.100
Subnet mask: 255.255.255.0
Default gateway: 192.168.1.1
* Stands for Wide Area Network
WAN*
IP address: 192.168.0.1
Subnet mask: 255.255.255.0
IP address: 192.168.0.250
Subnet mask: 255.255.255.0
Default gateway: 192.168.0.1
Network security of the recorder
The security function of the recorder
q Access restriction by the user authentication and the host authentication
It is possible to restrict users to access the recorder by selecting "On" for "User authentication/Host authen-
tication". (☞ Installation Guide)
w Access restriction by changing the HTTP port number
By changing the HTTP port number, it is possible to prevent illegal access such as a port scanning, etc.
(☞ Installation Guide)
To enhance the network security
It is possible to enhance the network security by dividing the subnet using a router to authenticate users twice
(by the recorder and by the router). When connecting the recorder to an unsecured network, secure the network
connection by installing a VPN (Virtual Private Network) device, etc. between the recorder and the host PC.
Important:
• Thesettingsforthenetworksecurityvariesdependingonthenetworktowhichtherecorderistobe
connected such as an intranet or Internet service provider. Refer to a network administrator for further
information about the network security.
[Connection example]
By using a firewall, etc., it is possible to use packet filtering and protocol filtering to enhance the network secu-
rity.
[Connection example]