What is the primary function of Ike and IKEv2?

Internet Key Exchange (IKE) is a standard protocol used to set up a secure and authenticated communication channel between two parties via a virtual private network (VPN). The protocol ensures security for VPN negotiation, remote host and network access.

What is the main function of IKE?

Internet Key Exchange (IKE) is a standard protocol used to set up a secure and authenticated communication channel between two parties via a virtual private network (VPN). The protocol ensures security for VPN negotiation, remote host and network access.

What is the difference between IKE and IKEv2?

IKEv2 uses four messages; IKEv1 uses either six messages (in the main mode) or three messages (in aggressive mode). IKEv2 has Built-in NAT-T functionality which improves compatibility between vendors. IKEv2 supports EAP authentication. IKEv2 has the Keep Alive option enabled as default.

What is the role of IKE in IPsec?

IKE is part of the Internet Security Protocol (IPSec) which is responsible for negotiating security associations (SAs), which are a set of mutually agreed-upon keys and algorithms to be used by both parties trying to establish a VPN connection/tunnel.

What are the purposes of having the IKE SAs in IKEv2?

IKE is used to create a Security Association between two parties involved in an encrypted transmission. Prior to have the encrypted traffic sent/received IKEv2 will create a secure tunnel, IKE SA that will be used to create in a secure way the CHILD SAs. It can be one CHILD SA or multiple CHILD SAs.

What are two benefits of using IKEv2 instead of IKEv1 when deploying remote access IPsec VPNs?

What is IKEv2 explained?

Internet Key Exchange version 2 (IKEv2) is a tunneling protocol, based on IPsec, that establishes a secure VPN communication between VPN devices and defines negotiation and authentication processes for IPsec security associations (SAs).

What are two functions of IKEv1 but not IKEv2?

–> IKEv2 supports MOBIKE where IKEv1 does not support. ( MOBIKE allows IKEv2 to be used in Mobile platforms). –> IKEv1 requires symmetric authentication (both have to use the same method of authentication), whereas IKEv2 uses Asymmetric Authentication ( Means one side RSA, another side can be pre-shared-key).

What is IKEv1 and IKEv2 in IPSec?

In computing, Internet Key Exchange (IKE, sometimes IKEv1 or IKEv2, depending on version) is the protocol used to set up a security association (SA) in the IPsec protocol suite. IKE builds upon the Oakley protocol and ISAKMP.

What is the difference between IKEv1 and IKEv2 Cisco router?

IKEv2 can use an AAA server to remotely authenticate mobile and PC users and assign private addresses to these users. IKEv1 does not provide this function and must use L2TP to assign private addresses. IKE SA integrity algorithms are supported only in IKEv2. The retry-interval parameter is supported only in IKEv1.

What are the 3 function of IPSec?

What is IPsec used for? IPsec is used for protecting sensitive data, such as financial transactions, medical records and corporate communications, as it's transmitted across the network. It's also used to secure virtual private networks (VPNs), where IPsec tunneling encrypts all data sent between two endpoints.

What ports does IKEv2 use?

By default, IKEv2 uses IPSec, which requires UDP ports 500 and 4500, and ESP IP Protocol 50.

Why is IKEv2 faster?

IKEv2 runs faster and more efficiently due to the pruning and optimization of some of the processes; IKEv2 consumes less bandwidth; IKEv2 has built-in NAT (Network address translation) traversal; IKEv2 supports EAP (Extensible Authentication Protocol), making it safer.

Why is main mode IKE more secure than aggressive mode?

While Aggressive Mode is faster than Main Mode, it is less secure because it reveals the unencrypted authentication hash (the PSK). Aggressive Mode is used more often because Main Mode has the added complexity of requiring clients connecting to the VPN to have static IP addresses or to have certificates installed.

What is the purpose of IKE quizlet?

This IKE mode negotiates algorithms & hashes, generates shared secret keys using a DH exchange, and provides verification of identities. This IKE mode squeezes all negotiation, key exchange, etc. into less packets. The advantage is that there is less traffic and is the faster mode.

Is IKE TCP or UDP?

The IKE protocol uses UDP packets, usually on port 500, and generally requires 4–6 packets with 2–3 round trips to create an ISAKMP security association (SA) on both sides.

What happens in IKE Phase 1?

In IKE phase 1, two peers will negotiate about the encryption, authentication, hashing and other protocols that they want to use and some other parameters that are required. In this phase, an ISAKMP (Internet Security Association and Key Management Protocol) session is established.

What are the 3 major components of IPSec?

IPSec Components. Encapsulating Security Payload (ESP) Authentication Header. Security Association.

How do DMZ and VPN work together?

Servers that offer services to the public (e.g. Web servers, SMTP servers) are placed in the DMZ, while servers that offer services to internal users reside on the private network. The VPN provides remote users with access to private resources.

Does IKEv2 use TCP or UDP?

IKEv2 — uses 3072-bit Diffie-Hellman key exchange and uses UDP. OpenVPN — uses 4096-bit Diffie Hellman key exchange with different ports for UDP and TCP.

What is the main advantage of SSL over IPsec client based VPN?

The key difference is that, as a higher layer protocol, TLS used in SSL VPN can easily go through NAT, whereas IPsec VPN requires NAT traversal techniques, and they aren't always working on all networks.

Is IKEv2 a SSL VPN?

IKEv2 is an alternative protocol to SSL for those that have unique security requirement such as regulation compliancy. We will demonstrate both username/password and certificate authentication, as well as Windows client and iPhone.

What is the difference between Strongswan IKEv1 and IKEv2?

IKEv2 supports EAP authentication. IKEv2 can use an AAA server to remotely authenticate mobile and PC users and assign private addresses to these users. IKEv1 does not provide this function and must use L2TP to assign private addresses. IKE SA integrity algorithms are supported only in IKEv2.

What are the two 2 mode in Internet Key Exchange IKE negotiations?

IKEv2 provides a simpler and more efficient exchange. IKEv1 phase 1 has two possible exchanges: main mode and aggressive mode. With main mode, the phase 1 and phase 2 negotiations are in two separate phases. Phase 1 main mode uses six messages to complete; phase 2 in quick mode uses three messages.

Can IKEv1 connect to IKEv2?

Yes. Transit between IKEv1 and IKEv2 connections is supported.

Can we enable IKEv1 and IKEv2 on same interface?

Overview Sometime you may need to run IKEv1 and IKEv2 at the same time for some reasons and it is absolutely possible to do so on Cisco ASA firewall.