Operating Instructions

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Network security of the recorder
The security function of the recorder
q Access restriction by the user authentication
It is possible to restrict users to access the recorder by selecting "On" for "User authentication". (☞
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)
Important:
 • Designandenhancesecuritycountermeasurestopreventleakageofinformationsuchasimagedata,
authentication information (user name and password), alarm mail information, FTP server information, etc.
Perform the countermeasure such as the access restriction using the user.
 • Aftertheunitisaccessedbytheadministrator,makesuretoclosethewebbrowserforaddedsecurity.
 • Changetheadministratorpasswordperiodicallyforaddedsecurity.
Enhance 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:
 • Thesettingsforthenetworksecurityvarydependingonthenetworktowhichtherecorderistobeconnect-
ed 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.
Network
Router Router
IP address: 192.168.1.100
Subnet mask: 255.255.255.0
Default gateway: 192.168.1.1
IP address: 192.168.0.250
Subnet mask: 255.255.255.0
Default gateway: 192.168.0.1
IP address: 192.168.0.1
Subnet mask: 255.255.255.0
IP address: 192.168.1.1
Subnet mask: 255.255.255.0
Recorder
PC