# IP Filter
You can add IP in the following list.
The list supports max 64 IP addresses.
System supports valid address of IPv4 and IPv6.
Please note system needs to check the validity of all IPv6 addresses and implement optimization.
After you enabled trusted sites function, only the IP listed below can access current NVR.
If you enable blocked sites function, the following listed IP addresses can not access current NVR.
* Enable: Highlight the box here, you can check the trusted site function and blocked sites function. You can not see these two modes if the Enable button is grey.
* Type: You can select trusted site and blacklist from the dropdown list. You can view the IP address on the following column.
* Start address/end address: Select one type from the dropdown list, you can input IP address in the start address and end address. Now you can click Add IP address or Add IP section to add.
1. For the newly added IP address, it is in enable status by default.
Remove the √ before the item, and then current item is not in the list.
2. System max supports 64 items.
3. Address column supports IPv4 or IPv6 format.
If it is IPv6 address, system can optimize it.
For example, system can optimize
aa:0000: 00: 00aa: 00aa: 00aa: 00aa: 00aa as aa:: aa: aa: aa: aa: aa: aa.
4. System automatically removes space if there is any space before or after the
newly added IP address.
5. System only checks start address if you add IP address.
System check start address and end address if you add IP section and the end address shall be
larger than the start address.
6. System may check newly added IP address exists or not.
System does not add if input IP address does not exist.
* Delete: Click it to remove specified item.
* Edit: System can check the IP address validity after the edit operation and implement IPv6 optimization.
If you enabled trusted sites, only the IP in the trusted sites list can access the device.
If you enabled blocked sites, the IP in the blocked sites can not access the device.
