Introduction To Ipsec - Brother SP-1 Online User's Manual

Introduction to IPsec

IPsec (Internet Protocol Security) is a security protocol that uses an optional Internet Protocol function to prevent
data manipulation and ensure the confidentiality of data transmitted as IP packets. IPsec encrypts data carried over
the network, such as print data sent from computers to a printer. Because the data is encrypted at the network layer,
applications that employ a higher-level protocol use IPsec even if the user is not aware of its use.
IPsec supports the following functions:
• IPsec transmissions
According to the IPsec setting conditions, the network-connected computer sends data to and receives data
from the specified device using IPsec. When the devices start communicating using IPsec, keys are exchanged
using Internet Key Exchange (IKE) first, and then the encrypted data is transmitted using the keys.
In addition, IPsec has two operation modes: the Transport mode and Tunnel mode. The Transport mode is used
mainly for communication between devices and the Tunnel mode is used in environments such as a Virtual
Private Network (VPN).
For IPsec transmissions, the following conditions are necessary:
- A computer that can communicate using IPsec is connected to the network.
- Your machine is configured for IPsec communication.
- The computer connected to your machine is configured for IPsec connections.
• IPsec settings
The settings that are necessary for connections using IPsec. These settings can be configured using Web
Based Management.
To configure the IPsec settings, you must use the browser on a computer that is connected to the network.
Related Information Related Information
• Use IPsec
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