SonicOS 7.1 IPSec VPN

IPsec VPN

SonicOS supports the creation and management of IPsec VPNs. These VPNs are primarily configured at NETWORK | IPSec VPN > Rules and Settings and NETWORK | IPSec VPN > Advanced.

IPsec (Internet Protocol Security) is a standards-based security protocol that was initially developed for IPv6, but it is also widely used with IPv4 and the Layer 2 Tunneling Protocol. Its design meets most security goals of authentication, integrity, and confidentiality. IPsec uses encryption and encapsulates an IP packet inside an IPsec packet. De-encapsulation happens at the end of the tunnel, where the original IP packet is decrypted and forwarded to its intended destination.

An advantage of using IPsec is that security arrangements can be handled without requiring changes to individual user computers. It provides two types of security service:

  • Authentication Header (AH), which essentially allows authentication of the sender of data
  • Encapsulating Security Payload (ESP), which supports both authentication of the sender and encryption of data

You can use IPsec to develop policy-based VPN (site to site) or route-based VPN tunnels or Layer 2 Tunneling Protocol (L2TP).

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