How do I connect to a VPN with username and password?

What is the server address for IKEv2 VPN?

Since this question shows up a lot in google results, here's an explanation of how to use IKEv2 with PEM encoded client certificates: IKEv2 requires that both sides agree upon the use of elliptic curve cryptography (ECDH) key agreement for session key exchange. The first step in the creation of the key is the Diffie-Hellman key exchange. In this case, the server's X.509 certificate has the private key corresponding to its public key. Both sides will know the symmetric session key before the authentication phase because they already agreed upon using ECDH.

Both the IKEv1 and IKEv2 protocols use the Diffie-Hellman key agreement for exchange of the session key. Diffie-Hellman has two phases, the Key Exchange Phase and the Authentication Phase. In the Key Exchange Phase, each side of the connection obtains a public key and sends their certificate to the other side. Because IKEv1 uses DH, there is no need to encrypt the data in the Key Exchange Phase. In the Authentication Phase, each side authenticates the other side. For IKEv2, this step involves the exchange of the ECDH shared secret, so the data sent during this phase is encrypted. Because the data exchange is encrypted in IKEv2, it must be done in a separate message from the authentication of the remote peer. It is possible to get the ECDH exchanged keys encrypted within the authentication messages, but it is also possible to send it as its own message. A common approach is to send ECDH and authentication as two separate messages.

In both the IKEv1 and IKEv2 protocols, each end is assigned a Unique ID. The first thing it generates is a new IKEv1 or IKEv2 identifier and sends it in a new Exchange Mode Message (XMode) message. Once the other party receives this message, they match it to the one received. To accomplish this, the parties have a database of matching peers. This database also stores the unique IKEv1 or IKEv2 identifiers associated with each peer. When the remote peer receives the first IKEv2 Authentication message, it matches the received identifier to the one stored in its database. If the identifiers match, it replies with a message containing its certificate.

How do I connect to IKEv2 VPN?

To connect to an IKEv2 VPN, you'll need to set up a client profile and configure a remote access server to do the authentication.

For more information about IKEv2, see How to Connect to an IKEv2 VPN.

What are remote access servers? Remote access servers (RAS) are servers that perform the authentication and authorization for a remote device. In other words, RASs receive the username and password from a remote device, authenticate it, and then forward the connection to the remote device. For more information, see Remote Access Server.

To connect to an IKEv2 VPN, you'll need to configure a remote access server (RAS) to do the authentication. For more information, see How to Connect to an IKEv2 VPN.

What are proxy servers? Proxy servers are used to intercept and modify network traffic. Proxy servers provide security by allowing a remote device to connect to a network without revealing its location or the identity of the remote device.

To connect to an IKEv2 VPN, you'll need to configure a proxy server to do the authentication. What is an IKEv2 VPN? An IKEv2 VPN is a security protocol for enabling remote devices to connect securely to a network. IKEv2 was developed by Cisco and was first introduced in Cisco IOS Release 12.3(14)SXI1.

For more information about the IKEv2 protocol, see What is IKEv2? What is an IKEv2 VPN tunnel? An IKEv2 VPN tunnel is a virtual network connection between two endpoints that has been established using an IKEv2 VPN. How do I configure a remote access server (RAS) to do the authentication? The Cisco ExpressAccess remote access server enables you to control which devices can connect to a specific service or network. The Cisco ExpressAccess RAS also supports the integration of the Microsoft Network Virtual Private Network (VPN) gateway. This integration enables the Cisco ExpressAccess RAS to provide a secure gateway for remote access connections and the Microsoft Network VPN.

What is the remote ID for IKEv2 VPN?

The remote ID for Cisco IKEv2 can be either the peer ID's private key or its public key.

Each IKEv2 VPN has at least one key and up to seven keys in total.

Note. When multiple peer IDs are specified in a configuration that specifies the remote ID of a public key, a user should always use the private key of the peer ID listed first. In most cases, a configuration using the private key of a peer ID will not support split authentication, and therefore is not recommended. Table 2-7 Remote ID Types and their Usage. Privkeypeerid. User's private key associated with a peer ID (eg, 172.16.50.100)

Publickeypeerid. PKI certificate of peer ID. Ikev2 Phase 2: Peer IDs and IKE Encryption Keys. A peer ID, also referred to as IKE ID, includes both the destination address and the corresponding public key. The key types are IP-SA, IPsec, XAUTH, and IP. If the same key type exists on two peer IDs, it is possible for users to send the same type of key to a peer ID with different values of the peer IDs, such as sending an IPsec AES/DES key to a single peer ID. For example, in Table 2-8 below, these three peered IDs have the same IPsec AES/DES public key. Thus, a Cisco IOS device that receives an IKEv2 negotiation request from any one of the three will receive the same key during the negotiation process.

The peer IDs used in the IKEv2 negotiation process are unique for each host within a network. Users who create multiple VPNs with the same source-to-destination address combination will use unique IP-SA keys on these interfaces.

IP SA encryption key value. Peer ID #1. Peer ID #2. 101

Peer ID #3. 201

If you do not require a split VPN, then only one of these three peer IDs (or their configurations) should be used on an interface.