What is a VTI interface?
Virtual Tunnel Interface (VTI) is a virtual interface that is used for establishing a Route-Based VPN tunnel. Each peer Security Gateway has one VTI that connects to the VPN tunnel. The VPN tunnel and its properties are configured by the VPN community that contains the two Security Gateways.
Does ASA support VTI?
The ASA supports a logical interface called Virtual Tunnel Interface (VTI). As an alternative to policy based VPN, a VPN tunnel can be created between peers with Virtual Tunnel Interfaces configured. This supports route based VPN with IPsec profiles attached to the end of each tunnel.
What is VTI over IPsec?
IP security (IPsec) virtual tunnel interfaces (VTIs) provide a routable interface type for terminating IPsec tunnels and an easy way to define protection between sites to form an overlay network.
What is a VPN tunnel interface?
To set up a VPN tunnel, the Layer 3 interface at each end must have a logical tunnel interface for the firewall to connect to and establish a VPN tunnel. A tunnel interface is a logical (virtual) interface that is used to deliver traffic between two endpoints.
What is IPsec interface?
The IPsec VTI allows for the flexibility of sending and receiving both IP unicast and multicast encrypted traffic on any physical interface, such as in the case of multiple paths. Traffic is encrypted or decrypted when it is forwarded from or to the tunnel interface and is managed by the IP routing table.
Does Cisco firepower support route based VPN?
In November 2020 Cisco released the Firepower Threat Defence (FTD) and Firepower Management Centre (FMC) version 6.7. Supported from this version is the long-awaited Virtual Tunnel Interface (VTI) for route-based site-to-site VPNs.
What is tunnel protection IPsec profile?
The Sharing IPsec with Tunnel Protection feature allows sharing an Internet Protocol Security (IPsec) session between two or more generic routing encapsulation (GRE) tunnel interfaces. The following command was introduced or modified: tunnel protection IPsec profile.
How does tunnel interface work?
Tunnel interfaces are virtual interfaces that provide encapsulation of arbitrary packets within another transport protocol. The Tunnel-IPSec interface provides secure communications over otherwise unprotected public routes. A virtual interface represents a logical packet switching entity within the router.
What is tunnel IP address?
An IP tunnel is an Internet Protocol (IP) network communications channel between two networks. IP tunnels are often used for connecting two disjoint IP networks that don’t have a native routing path to each other, via an underlying routable protocol across an intermediate transport network.
What is route based IPsec?
A route-based VPN is a configuration in which an IPsec VPN tunnel created between two end points is referenced by a route that determines which traffic is sent through the tunnel based on a destination IP address.
How to contact virtual tunnel interface ( VTI ) support?
If you aren’t finding a solution, or would like to talk to a technical support team member, please call 800-669-6242. The Virtual Tunnel Interface or VTI is a feature that allows for a more flexible VPN. A VTI VPN is a specialized type of IPsec VPN.
What are the different types of VTI interfaces?
–Hierarchical Class-Based Weighted Fair Queu ing (HCBWFQ), which provides queuing within a shaped rate, on the VTI interface pre-crypto on both headend and branch routers –Dynamic VTI (DVTI) on headend crypto systems, and static VTI on the branches
What does a VTi do for an IPSEC tunnel?
A VTI is an interface that supports native IPsec tunneling, and allows you to apply interface commands directly to the IPsec tunnels. The configuration of this tunnel interface is similar to a GRE tunnel interface and is well understood. A VTI has most of the properties of a physical interf ace.
How to set the MTU for a VTi?
The MTU for VTIs is automatically set, according to the underlying physical interface. However, if you change the physical interface MTU after the VTI is enabled, you must disable and reenable the VTI to use the new MTU setting. If Network Address Translation has to be applied, the IKE and ESP packets will be encapsulated in the UDP header.