IP Security - Virtual Private Network
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806
Beta Beta
OmniAccess 5740 Unified Services Gateway CLI Configuration Guide
Alcatel-Lucent
VPNs may be implemented using any of the several protocols such as PPTP,
L2TP, and IPsec, to name a few. This chapter primarily focuses on the
implementation of 'secure' VPNs with IPsec.
In a TCP/IP network, the packet is routed based on the network layer information
while the actual data is held in the IP layer. Hence, by securing the IP layer, it is
possible to secure the network.
The following sections provide a conceptual overview of IPsec VPN:
• “IPsec Enabled VPN”
• “IPsec Connection Types”
• “IPsec Concepts”
• “Benefits of IPsec Enabled VPN”
• “Default Configuration Setting on OmniAccess 5740 USG”
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