By creating a user\u2019s custom name (FEN name) simply from a DirectIP NVR, its device info and network parameters (including Device name, MAC address, IP address, port info, NAT type, product info etc.) are automatically registered in the DirectIP FEN server running in the cloud. The user is able to access the site remotely using this custom name instead of an IP address, as the FEN server keeps hold of the local device\u2019s connection on the network even in a DHCP environment with dynamic changing IP.<\/p>\n
FEN service uses UDP hole punching for NAT traversal to gather address information of two ends, a NVR and a remote client, and NAT type in a site where a NVR is or a remote client is should support UDP communication.<\/p>\n
[NAT types supporting UDP communication]
\n– Open internet
\n– Cone types (Full cone, Restricted cone, Port restricted cone)<\/p>\n
[NAT types not supporting UDP communication]
\n– UDP blocked
\n– Symmetric
\n– Symmetric UDP firewall<\/p>","protected":false},"excerpt":{"rendered":"