FlexVPN vs GetVPN: Detailed Comparability

July 4, 2022

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VPNs present safe communication between two factors throughout a public community such because the Web. The visitors flows between these two factors passes by means of shared assets in a safe method normally encrypted. There are a number of kinds of VPNs out there – similar to Level to Level , Hub and spoke , partial mesh VPN, Get VPN and many others.

At the moment we glance extra intimately about FlexVPN and Get VPN, how they differ from one another, their benefits and use circumstances and many others.

FlexVPN is Cisco implementation of IKEv2 framework which mixes web site to web site, distant entry, hub and spoke topologies and partial mesh (Spoke to spoke direct) VPNs. Flex VPN presents a easy and modular method which extensively makes use of tunnel interface fashions together with remaining suitable to legacy VPN implementations utilizing crypto maps.

Elements of FlexVPN

FlexVPN has two elements – Server and shopper.

Server acts as VPN head finish for distant entry and hub-spoke VPNs and
Shoppers are IOS router primarily based distant workplaces and cellular networks which offer connectivity to go workplace.

FlexVPN will be spoke-to-spoke or we will have MPLS over FlexVPN.

Spoke to Spoke design enabled two purchasers to ascertain a direct crypto tunnel and Subsequent Hop Decision Protocol (NHRP) is used to resolve purchasers on the community.

MPLS and MP-BGP is used for distribution of overlay labels for various VRFs ideally suited the place the shopper requires to dynamically uncover overlapping networking with NHRP and encryption with IPSec.

Get VPNs present massive scale, connectionless, tunnel free transmission safety benefiting from present routing infrastructure and can be utilized with MPLS, IP, Body relay and ATM networks. Get VPNs makes level to level connections optionally available and subsequently can be utilized to transmit voice and video with top quality and managed high quality of service (QOS), routing and multicasting. Get VPNs use the idea of ‘trusted’ group members nevertheless it solely works with Cisco units.

Elements of GetVPN

The 2 foremost elements of Get VPN structure are :

Key server – used to authenticate all group members, performs admission management over Get VPN area, creates and provides group authentication key as safety affiliation (SA) to group members.
Group members – supplies transmission safety to delicate web site to web site (member to member) visitors. Key server distributes keys and insurance policies throughout all registered and authenticated group members. All communication between key server and group members is encrypted and secured utilizing the Web key change (IKE) Group Area of Interpretation (GDOI) protocol.

IKE GDOI helps use of two kinds of keys – visitors encrypting key (TEK) and Key encrypting key (KEK).

TEK is used for defense of visitors between group members and KEK is used to guard keys throughout a key refresh between key servers and group members.

Comparability Desk: FlexVPN vs GetVPN

Under desk summarizes the variations between the 2:

Perform	Flex VPN	Get VPN
Supported Environments	Flex VPN is extra versatile because it permits to cope with Intranet in addition to Web primarily based eventualities	Designed to be used in environments which don’t have public/non-public addressing difficulty and is nicely fitted to Safe intranet service
Methodology	Flex VPN is tunnel primarily based and in a position to deal with environments having dynamic tunnel setup between spokes	Get VPN is tunnel much less and depends on belief degree shared by VPN customers.
Safety	Flex VPN deploys Level to Level safety associations (SA)	Get VPN employs group-based safety associations (SA)
Use Instances	Flex VPN can be utilized for site-to-site VPN, distant entry (RA VPN) deployments	Get VPN is used for web site to web site solely
Protocols Supported	Flex VPN requires IKE model 2	Get VPN makes use of IKE model 1
IP Multicast Assist	Multicast replication at hub, native multicast replication supported	Multicast replication in IP WAN community
Options	●Can use over any community transport ●Assist for a number of topologies like p2p, distant entry, hub-spoke, dynamic mesh ●Multicast assist ●Superior QoS – per tunnel or per SA ●Helps dynamic overlay routing ●Integrates with AAA ●Helps GRE and native IPSec encapsulation applied sciences ●Helps IPV4 and IPV6 overlay and underlay with auto detection IP transport sort	●Provides encryption to MPLS or IP WANs with preserving any-to-any connectivity ●Networking options ●Provides scalable, full-time mesh for IPSec VPNs ●Allow participation of smaller routers into community ●Simplification of encryption key administration together with QoS and multicast assist