Which phase is Isakmp?
IKE phase 2 In this phase, an ISAKMP (Internet Security Association and Key Management Protocol) session is established. This is also called the ISAKMP tunnel or IKE phase 1 tunnel. The IKE phase 1 tunnel is only used for management traffic.
What is an IKE Phase 2 function?
The purpose of IKE phase 2 is to negotiate IPSec SAs to set up the IPSec tunnel. IKE phase 2 performs the following functions: Negotiates IPSec SA parameters protected by an existing IKE SA. Periodically renegotiates IPSec SAs to ensure security. Optionally performs an additional Diffie-Hellman exchange.
How do I know if I have IPSec Phase 2?
Phase 2 (IPsec) security associations fail Check the phase 2 proposal encryption algorithm, authentication algorithm or hash, and lifetime are the same on both sides. Check VPN Encryption Domain (Local and remote subnet) should be identical. Check NAT Exemption. Check the PFS (perfect forward secrecy) if you are using.
What does Mm_no_state mean?
MM_NO_STATE means that the VPN phase 1 (ISAKMP) is not even negotiated. As per your description, there is configuration fails in your 851 router, so you might want to check the configuration first to make sure that all the VPN related configuration is still there.
What is ISAKMP phase1?
ISAKMP defines the message format, the mechanics for a key exchange protocol, and the negotiation process to build connections. ISAKMP, however (as already mentioned), doesn’t define how keys are created, shared, or managed for protecting the secure connections; IKE is responsible for this.
What protocol is ISAKMP?
Internet Security Association and Key Management Protocol
The Internet Security Association and Key Management Protocol (ISAKMP) defines the procedures for authenticating a communicating peer, creation and management of Security Associations, key generation techniques, and threat mitigation (e.g. denial of service and replay attacks).
What is the difference between ISAKMP and IPsec?
IPSec does use IKE, but ISAKMP is part of IKE. IKE establishs the shared security policy and authenticated keys. ISAKMP is the protocol that specifies the mechanics of the key exchange. The confusion, (for me,) is that in the Cisco IOS ISAKMP/IKE are used to refer to the same thing.
What does MM_Active mean?
MM_Active means that phase 1 is coming up OK – it’s working fine. The role of responder or initiator just means which device initiates the VPN tunnel. Whether your ASA is the one who initiates the VPN tunnel, or the remote peer initiates the VPN tunnel.
What is Qm_idle state?
Note that these SAs are in “QM_IDLE” state, meaning that the ISAKMP SA is authenticated and can be used for subsequent Quick Mode (Phase 2) exchanges. The ISAKMP SA can exist in a number of other states. These states are described in Table 3-1 for ISAKMP SA negotiation in Main Mode.
What is ISAKMP policy?
Internet Security Association and Key Management Protocol (ISAKMP) is a protocol defined by RFC 2408 for establishing Security association (SA) and cryptographic keys in an Internet environment.