10About the network security of this unitEquipped security functionsq Access restrictions by the host authentication and the user authenticationIt is possible to restrict users from accessing this unit by setting the host authentication and/or the userauthentication to on. (page 93)w Access restrictions by changing the HTTP portIt is possible to prevent illegal access such as port scanning, etc. by changing the HTTP port number. (page 93)For enhanced securityDivide the subnet using a router to enhance the network security by double authentications of IP addresses usingthis unit and a router. When required to connect this unit with a network without enhanced security, connect the unitafter the network security is enhanced, such as by installing a VPN (Virtual Private Network) device, etc.Important:The settings of the unit will be different depending on the settings of the LAN or the Internet service provider towhich the unit is to be connected.Refer to an administrator of each network for further information about the respective network.[Connection example]Installing a firewall to use the packet filtering and the protocol filtering functions can better enhance the networksecurity.[Connection example]WAN*Router RouterGlobal IP AddressIP Address: 192.168.1.100Subnet Mask: 255.255.255.0Default Gateway: 192.168.1.1IP Address: 192.168.0.250Subnet Mask: 255.255.255.0Default Gateway: 192.168.0.1IP Address: 192.168.0.1Subnet Mask: 255.255.255.0IBM PC/AT CompatibleIP Address: 192.168.1.1Subnet Mask: 255.255.255.0This unit* Stands for Wide Area Network11 82INOUTCASCADEOUT1616315151414132113121211111010998877665544332211VIDEOAUDIO IN AUDIO OUT MONITOR OUT CASCADE IN MONITOR (VGA) ALARM/CONTROLSERIAL ALARMPOWERCOPY 1MODEEXT STORAGE10/100BASE-TRS485(CAMERA)DATAAC INSIGNAL GND14 2WAN*Switching hubFirewallRouter RouterIP Address: 192.168.1.100Subnet Mask: 255.255.255.0Default Gateway: 192.168.1.1IP Address: 192.168.0.1Subnet Mask: 255.255.255.0IP Address: 192.168.1.1Subnet Mask: 255.255.255.0IP Address: 192.168.0.250Subnet Mask: 255.255.255.0Default Gateway: 192.168.0.1Global IP AddressIBM PC/AT Compatible* Stands for Wide Area NetworkThis unit11 82INOUTCASCADEOUT1616315151414132113121211111010998877665544332211VIDEOAUDIO IN AUDIO OUT MONITOR OUT CASCADE IN MONITOR (VGA) ALARM/CONTROLSERIAL ALARMPOWERCOPY 1MODEEXT STORAGE10/100BASE-TRS485(CAMERA)DATAAC INSIGNAL GND14 2