Filter protocol type (TCP/ UDP/ ICMP/ IP)
Set the filter Port range
Set source address. It can be a single IP address or use * as a wild
card. For example: 192.168.1.14 or *.*.*.14.
Set destination address. It can be a single IP address or use * as a
wild card. For example: 192.168.1.14 or *.*.*.14.
Set the source address mask. For example: 255.255.255.255 points to
one host while 255.255.255.0 points to a C type network.
Set the destination address mask. For example: 255.255.255.255
points to one host while 255.255.255.0 points to a C type network.
When a connected device tries to access 192.168.1.118, the phone will deny the request
because of the out_access rule. Access to any other IP address will be allowed.
Click the Delete button to delete the selected rule.
8.3.7.3 Network Address Translation (NAT)
NAT is the process of modifying IP address and port information in transition from a private
to a public network. NAT allows the use of one public address to support many private
addresses.