Remote-access Guide

anyconnect ikev2 remote access

by Cedrick Howe Published 2 years ago Updated 2 years ago
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How do I enable IPsec IKEv2 on AnyConnect?

NOTE: The AnyConnect client protocol defaults to SSL. To enable IPsec IKEv2, you must configure the IKEv2 settings on the ASA and also configure IKEv2 as the primary protocol in the client profile. The IKEv2enabled profile must be deployed to the endpoint computer, otherwise the client attempts to connect using SSL.

How do I create an IKEv2 remote-access profile?

When you create the profile, the HostAddress must match the Certificate Name (CN) on the certificate that is used for IKEv2. Enter the crypto ikev2 remote-access trustpoint command in order to define this. The UserGroup must match the name of the tunnelgroup to which the IKEv2 connection falls.

What is the default Ike identity for AnyConnect?

Note: AnyConnect uses '*$AnyConnectClient$*' as its default IKE identity of type key-id. However, this identity can be manually changed in the AnyConnect profile to match deployment needs. Note: In order to upload the XML profile to the router, IOS-XE 16.9.1 version or later is required.

How to configure the AnyConnect client to connect to the VPN gateway?

With the fresh installation of the AnyConnect (with no XML profiles added), the user is able to manually enter the FQDN of the VPN gateway in the address bar of AnyConnect client. This results in the SSL connection to the gateway. The AnyConnect client will not attempt to establish the VPN tunnel with IKEv2/IPsec protocols by default.

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Does Cisco AnyConnect use IKEv2?

Each of those products only supported their own protocol however with the introduction of Anyconnect Secure Mobility Client 3.0, the client can now use IPsec (IKEv2) or SSL for the transport of the VPN connection.

Can I connect to 2 VPNs at the same time Cisco AnyConnect?

You want to connect to 2 different VPNs at the same time using Anyconnect software? If that's it, it isn't possible. However, you can have 1 VPN using anyconnect software and another VPN using open-source openconnect software. This will allow 2 vpn connections at the same time.

How do I enable Cisco AnyConnect VPN through Remote Desktop?

The steps would be:Log into the ASDM.Go to Configuration, Remote Access VPN, Anyconnect Client Profile.Click Add and create a new profile and choose the Group Policy it should apply to.Click OK, and then at the Profile screen click "Apply" at the bottom (important)More items...•

Does AnyConnect use IPsec?

Anyconnect is the replacement for the old Cisco VPN client and supports SSL and IKEv2 IPsec. When it comes to SSL, the ASA offers two SSL VPN modes: Clientless WebVPN.

What happens when you use two VPNs at once?

Let's put it simply: just installing and connecting two VPN clients at once won't work. When activating the second VPN it will likely end up with a routing error, and even if it doesn't the two will conflict with one another until eventually one of them wins the fight and is the only service to route your traffic.

Can I connect to a VPN through a VPN?

Yes, you can use a VPN on a VPN. In fact, you can either use one VPN on your router and one on your device, or one on your device and run the second on a virtual machine on that same device. Whichever of these setups you choose, we recommend using two different VPN providers for maximum security.

What is port for RDP?

Overview. Remote Desktop Protocol (RDP) is a Microsoft proprietary protocol that enables remote connections to other computers, typically over TCP port 3389.

Where are Cisco AnyConnect profiles stored?

Resolution:Operating SystemLocationWindows 8%ProgramData%\Cisco\Cisco AnyConnect Secure Mobility Client\ProfileWindows 10%ProgramData%\Cisco\Cisco AnyConnect Secure Mobility Client\ProfileMac OS X/opt/cisco/anyconnect/profileLinux/opt/cisco/anyconnect/profile3 more rows•Apr 27, 2022

How do I get Cisco AnyConnect secure mobility client?

Open a web browser and navigate to the Cisco Software Downloads webpage.In the search bar, start typing 'Anyconnect' and the options will appear. ... Download the Cisco AnyConnect VPN Client. ... Double-click the installer.Click Continue.Go over the Supplemental End User License Agreement and then click Continue.More items...

What type of VPN does AnyConnect use?

TLSCisco AnyConnect VPNs utilize TLS to authenticate and configure routing, then DTLS to efficiently encrypt and transport the tunneled VPN traffic, and can fall back to TLS-based transport where firewalls block UDP-based traffic.

What protocol does AnyConnect use?

Ports Required for VPN to Connect KB0015544ProtocolCisco AnyConnect Client PortTLS (SSL)TCP 443SSL RedirectionTCP 80DTLSUDP 443IPsec/IKEv2UDP 500, UDP 4500

What is the difference between Cisco AnyConnect and VPN client?

Cisco AnyConnect vs Cisco VPN Client At a high level, there are two major differences between the two clients: First, the AnyConnect client supports both SSL and IPsec VPN options (including support for IKE 2.0 and NSA Suite B IPsec), while the VPN client only supports IPsec.

What is Citrix remote desktop?

Remote PC Access is a feature of Citrix Virtual Apps and Desktops that enables organizations to easily allow their employees to access corporate resources remotely in a secure manner. The Citrix platform makes this secure access possible by giving users access to their physical office PCs.

How do I change my AnyConnect client profile?

Navigate to Configuration > Remote Access VPN > Network (Client) Access > AnyConnect Connection Profiles. Select the AnyConnect VPN profile in Connection Profiles and click Edit. The Edit AnyConnect Connection Profile window is displayed. Set the Method as AAA in the Authentication.

How do I edit my Cisco AnyConnect profile?

Navigate to Configuration > Remote Access VPN > Network (Client) Access > AnyConnect Client Profile. Choose Add. Give the profile a name. Choose the Umbrella Security Roaming Client type from the Profile Usage drop-down list.

What happens if IKEv2 doesn't match?

The UserGroup must match the name of the tunnelgroup to which the IKEv2 connection falls. If they do not match, the connection often fails and the debugs indicate a Diffie-Hellman (DH) group mismatch or a similar false negative.

Do you have to enable client services and certificates on the correct interface?

You must enable client services and certificates on the correct interface, which is the outside interface in this case. Here is an example configuration:

Does AnyConnect use IPsec?

Even in the IKEv2 configuration, when AnyConnect connects to the ASA, it downloads profile and binary updates over SSL, but not IPsec.

Does anyconnect require EKU?

Certificates with Proper EKU. It is important to note that even though it is not required for the ASA and AnyConnect combination, RFC requires that certificates have Extended Key Usage (EKU): The certificate for the ASA must contain the server-auth EKU. The certificate for the PC must contain the client-auth EKU.

When connecting in AnyConnect, should you be prompted for a password?

When connecting in AnyConnect, you should be prompted for a password. In this example, it is User3 that was created

Which algorythm is supported by AnyConnect?

On the AnyConnect side, as of the AnyConnect 3.1 version, NSA's Suite B algorythm suite is supported.

Why is EAP-MD5 used in non-tunneling mode?

In this example, EAP-MD5 in non-tunneling mode is used because it is EAP outer authentication method supported currently in ACS 5.3.

What is remote access VPN?

Remote Access VPN allows end-clients using various Operating Systems to securely connect to their Corporate or Home networks through non-secure medium such as the Internet. In the presented scenario, VPN tunnel is being terminated on a Cisco IOS Router using IKEv2 protocol.

What is the above configuration?

The above configuration is provided for reference to show a minimalistic working configuration.

Which routers support NGC?

When choosing NGC configuration, make sure that both client software and headend hardware support it. ISR generation 2 and ASR 1000 routers are recommended as headends because of their hardware support for NGC.

Does CN have to be the same hostname?

CN in IOS identity certificate has to be equal hostname in the ACS XML profile.

What is Cisco AnyConnect Secure Mobility Solution?

The Cisco AnyConnect Secure Mobility Solution provides a comprehensive, highly secure enterprise mobility solution. the Cisco AnyConnect Secure Mobility Solution continues to lead with next-generation security and encryption, including support for the Suite B set of cryptographic algorithms, and support for IPv6 networks. More importantly, it adapts its tunneling protocol to the most efficient method. AnyConnect client can be used to connect both SSL VPN as well as IKEv2 IPSec VPN. In this document we will see how to configure only IKEv2 IPSec VPN.

What is active/active failover?

Active/Active failover is only available to security appliances in multiple context mode. In an Active/Active failover configuration, both security appliances can pass network traffic. In Active/Active failover, you divide the security contexts on the security appliance into failover groups. A failover group is simply a logical group of one or more security contexts. You can create a maximum of two failover groups on the security appliance. The admin context is always a member of failover group 1. Any unassigned security contexts are also members of failover group 1 by default. We have already seen the configuration for Active/Standby failover in the previous article. This article focuses on how to configure an Active/Active Failover configuration on ASA Security Appliance. Network Diagram (Physical Topology)

What is IKEv2 in Cisco?

This document describes how to understand debugs on the Cisco Adaptive Security Appliance (ASA) when Internet Key Exchange Version 2 (IKEv2) is used with a Cisco AnyConnect Secure Mobility Client. This document also provides information on how to translate certain debug lines in an ASA configuration.

What is the length of an EAP packet?

Length: 150 - Length of the EAP packet includes the code, id, length, and EAP data.

What does id mean in EAP?

id: 1 - The id helps match the EAP responses with the requests. Here the value is 1, which indicates that this is a response to the request previously sent by the ASA (authenticator). This EAP response has the 'config-auth' type of 'init'; the client is initializing the EAP exchange and is waiting for the ASA to generate the authentication request.

Is EAP authentication allowed?

Authentication is done with EAP. Only a single EAP authentication method is allowed within an EAP conversation. The ASA receives the IKE_AUTH message from the client.

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Introduction

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This document provides a sample configuration of how to set up Remote Access on IOS using the FlexVPN toolkit. Remote Access VPN allows end-clients using various Operating Systems to securely connect to their Corporate or Home networks through non-secure medium such as the Internet. In the presented scen…
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Prerequisites

  • Network Diagram
    Cisco IOS Router has two interfaces - one towards ACS 5.3:
  • Requirements
    There are no specific requirements for this document.
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Background

  • In IKEv1 XAUTH is used in phase 1.5, you can do authentication of users locally on an IOS router and remotely using RADIUS/TACACS+. IKEv2 does not support XAUTH and phase 1.5 any more. It contains built-in EAP support, which is done in phase IKE_AUTH. The biggest advantage of this is in IKEv2 design and EAP is a well-known standard. EAP supports tw...
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iOS Initial Configuration

  • IOS - CA
    First of all you need to create Certificate Authority (CA) and create an identity certificate for the IOS Router. The client will verify the router's identity based on that Certificate. Configuration of CA on IOS looks like: You need to remember about Extended Key Usage (Server-Auth needed for EA…
  • IOS - Identity certificate
    Next, enable Simple Certificate Enrollment Protocol (SCEP) for certificate and configure trustpoint. Then, authenticate and enroll the certificate: If you do not want to have prompt messages in AnyConnect remember that cn needs to be equal to hostname/IP addresses config…
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ACS Initial Configuration

  • First, add the new Network Device in ACS (Network Resources > Network Devices and AAA Clients > Create): Add a user (Users and Identity Stores > Internal Identity Stores > Users > Create): Add a user for authorization. In this example, it is IKETEST. The password needs to be "cisco" because it is the default sent by IOS. Next, create an Authorization profile for the users (Policy elements > A…
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iOS FlexVPN Configuration

  • You need to create IKEv2 proposal and policy (you might not have to, refer to CSCtn59317 ). Policy is created only for one of the IP addresses (10.1.1.2) in this example. Then, create an IKEV2 profile and IPsec profile that will bind to Virtual-Template. Make sure you are turning off http-url cert, as advised in the configuration guide. In this example, authorization is set up based on use…
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Windows Configuration

  • Importing CA to Windows Trusts
    Export the CA certificate on IOS (make sure to export identity certificate and take only the first part): Copy the part between BEGIN CERTIFICATE and END CERTIFICATE and paste it to Notepad in Windows and save as a file CA.crt. You need to install it as in Trusted Root Authorities (doubl…
  • Configuring AnyConnect XML Profile
    In C:\ProgramData\Cisco\Cisco AnyConnect Secure Mobility Client\Profile create a file "whatever.xml" and paste this: Make sure that the 10.1.1.2 entry is exactly the same as CN=10.1.1.2 that was entered for the identity certificate.
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Tests

  • In this scenario SSL VPN is not used, so make sure the HTTP server is disabled on IOS (no ip http server). Otherwise, you receive an error message in AnyConnect that states, "Use a browser to gain access". When connecting in AnyConnect, you should be prompted for a password. In this example, it is User3 that was created After that, the user is connected.
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Verification

  • IOS Router
    You can perform a debug (debug crypto ikev2).
  • Windows
    In the Advanced options of AnyConnect in VPN you can check Route Details to see the Split Tunneling networks:
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Known Caveats and Issues

  1. Remember when having SHA1 in signature hash and in integrity policy in IKEv2 (refer to Cisco bug ID CSCtn59317 (registeredcustomers only) ).
  2. CN in IOS identity certificate has to be equal hostname in the ACS XML profile.
  3. If you want to use Radius AV pairs passed during authentication and not use authorization of the group at all, you can use this in IKEv2 profile: aaa authorization user eap cached
  1. Remember when having SHA1 in signature hash and in integrity policy in IKEv2 (refer to Cisco bug ID CSCtn59317 (registeredcustomers only) ).
  2. CN in IOS identity certificate has to be equal hostname in the ACS XML profile.
  3. If you want to use Radius AV pairs passed during authentication and not use authorization of the group at all, you can use this in IKEv2 profile: aaa authorization user eap cached
  4. Authorization is always using password "cisco" for group/users authorization. This might be confusing while using aaa authorization user eap list SERV (without any paramaters) because it will try t...

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