# Setting the IPSec Encryption Communication Function (LBP7680Cx Only)

Specify the settings for using IPSec encryption with the printer.
See the following sections, depending on the items you wish to set.
Registering/Editing Security Policies
In order to use the IPSec encryption communication function, it is necessary to set a security policy in advance.

| Displaying the [Key and Certificate Settings] Page in the Remote UI Adding a New Security Policy Editing Security Policies

Enabling and Disabling IPSec Encryption Communication Function Settings

| Displaying the [Key and Certificate Settings] Page in the Remote UI Enabling IPSec Encryption Communication

NOTE
###### IPSec Encryption Communication IPSec is a protocol that maintains security by protecting IP packets transmitted over the IP network from threats such as theft, falsification, spoofing. Its advantage is that it can be used to add a security function to the basic Internet Protocol (IP) without being dependent on software or network configuration. ###### Communication Mode Of the IPSec communication modes, the printer supports only the transport mode. Certificates and encryption can only be applied to the data parts of IP packets.

IMPORTANT
Packets that are not applied by IPSec encrypted communication The following packets are not applied by IPSec encrypted communication. IKE(IPv4/IPv6) UDP port number: 500 Loopback address IPv4 address: 127.0.0.1 IPv6 address: ::1 Multicast address IPv4 address: 244.0.0.0 /4 IPv6 address: FF00:: /8 Broadcast address IPv4 address: 255.255.255.255

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