Remote-access Guide

cisco asa remote access vpn configuration example split tunnel

by Rita Koelpin Published 2 years ago Updated 1 year ago
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1. Launch the ASDM > Configuration > Remote Access VPN > Network (Client) Access > Group Policies > Select your policy. 2. Edit > Select Advanced > Split Tunneling.

Full Answer

How to configure split tunnel in Cisco ASA?

Option 1 Enable Split Tunnel via Command Line. 1. Connect to the ASA > Go to enable mode > Then to global configuration mode > Create an ACL that permits traffic from the network behind the ASA to any. 3. Save the changes. 1. Launch the ASDM > Configuration > Remote Access VPN > Network (Client) Access > Group Policies > Select your policy.

How to configure split tunneling for remote access VPN?

Complete these steps in order to configure your tunnel group to allow split tunneling for the users in the group. Choose Configuration > Remote Access VPN > Network (Client) Access > Group Policies, and choose the Group Policy in which you want to enable local LAN access. Then click Edit.

How to use AnyConnect VPN with Asa?

The remote user will open a web browser, enters the IP address of the ASA and then it will automatically download the anyconnect VPN client and establishes the connection. Here’s the topology that we will use:

How do I configure the AnyConnect client for Split tunneling?

The traffic between the client and the inside subnet must be exempt from any dynamic Network Address Translation (NAT). Click Next, Next, and then Finish. The AnyConnect Client configuration is now complete. However, when you configure AnyConnect via the Configuration Wizard, it configures the Split Tunnel policy as Tunnelall by default.

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Does Cisco AnyConnect allow split tunneling?

Dynamic Split Tunnel Include AnyConnect will send only the domains listed in the configuration over the secure vpn tunnel and all other traffic will be sent in the clear.

What is split tunneling in remote access VPN?

Split-tunneling is the process of allowing a remote VPN user to access a public network, such as the Internet, at the same time that the user is allowed to access resources on the VPN. This system of network access enables the user to access remote networks, at the same time as accessing the public network.

How do I set up split tunneling?

Configuring Split Tunnel for WindowsNavigate to Control Panel > Network and Sharing Center > Change Adapter Settings.Right click on the VPN connection, then choose Properties.Select the Networking tab.Select Internet Protocol Version 4 (TCP/IPv4) and click Properties.Click Advanced.More items...•

Should you split tunnel VPN?

You should use VPN split tunneling if you want to protect sensitive data without sacrificing your internet speeds. If you're happy to split your online activity between things you want to keep private and things you're not worried about, then VPN split tunneling could work well for you.

What is split tunneling Cisco VPN?

What is Split Tunneling? VPN split tunneling lets you send some of your application or device traffic through an encrypted VPN, while other applications or devices have direct access to the internet.

What is the advantage of split tunneling?

Advantages. One advantage of using split tunneling is that it alleviates bottlenecks and conserves bandwidth as Internet traffic does not have to pass through the VPN server. Another advantage is in the case where a user works at a supplier or partner site and needs access to network resources on both networks.

What is the difference between a tunnel mode VPN and a split tunneling VPN?

VPN Connection Types Full tunnel is generally recommended because it is more secure. Split Tunnel - Routes and encrypts all OSU-bound requests over the VPN. Traffic destined to sites on the Internet (including Zoom, Canvas, Office 365, and Google) does not go through the VPN server in split tunnel mode.

How do I create a VPN tunnel?

In the Google Cloud console, go to the VPN page. ... Click Create VPN tunnel.From the drop-down menu, select the gateway that requires the second tunnel, and then click Continue.Choose a Cloud Router. ... For Peer VPN gateway, select On-prem or Non Google Cloud.More items...

When would you want to use a split tunnel for users?

Split tunneling allows you to connect to two networks simultaneously. In this way, you can be on your local corporate network as usual, while simultaneously accessing a foreign network. And you don't need to sacrifice either connection.

What is the difference between a tunnel mode VPN and a split tunneling VPN?

VPN Connection Types Full tunnel is generally recommended because it is more secure. Split Tunnel - Routes and encrypts all OSU-bound requests over the VPN. Traffic destined to sites on the Internet (including Zoom, Canvas, Office 365, and Google) does not go through the VPN server in split tunnel mode.

When would you want to use a split tunnel for users?

Split tunneling allows you to connect to two networks simultaneously. In this way, you can be on your local corporate network as usual, while simultaneously accessing a foreign network. And you don't need to sacrifice either connection.

How do you know if split tunnel is working?

You can check that split tunneling is enabled by entering the Get-VPNConnection command again. The split tunneling field should now be set to True.

How do you stop split tunneling?

Disabling 'Split-Tunnel' option for SSL VPN. Go to VPN -> SSL VPN Portals -> Edit SSL-VPN Portal and under 'Tunnel Mode' disable 'Enable Split Tunneling'. Once the split tunnel option is disabled, all user Internet traffic will reach FortiGate and VPN interface to WAN policy is needed.

What is split tunneling?

Split tunnelling is a feature that you can use in order to define the traffic for the subnets or hosts that must be encrypted. This involves the configuration of an Access Control List (ACL) that will be associated with this feature. The traffic for the subnets or hosts that is defined on this ACL will be encrypted over the tunnel from the client-end, and the routes for these subnets are installed on the PC routing table.

Where to download Cisco AnyConnect Secure Mobility Client?

The Cisco AnyConnect Secure Mobility Client web deployment package should be downloaded to the local desktop from which the ASDM access to the ASA is present. In order to download the client package, refer to the Cisco AnyConnect Secure Mobility Client web page. The web deployment packages for various Operating Systems (OSs) can be uploaded to the ASA at the same time.

How to add AnyConnect client image?

Click Add in order to add the AnyConnect Client image (the .pkg file) from the PC or from the flash. Click Browse Flash in order to add the image from the flash drive, or click Upload in order to add the image from the host machine directly:

What is AnyConnect Configuration Wizard?

The AnyConnect Configuration Wizard can be used in order to configure the AnyConnect Secure Mobility Client. Ensure that an AnyConnect client package has been uploaded to the flash/disk of the ASA Firewall before you proceed.

What is the next hop for split ACL?

The next hop for these routes will be an IP address from the client IP pool subnet (usually the first IP address of the subnet):

How to view routing table on Mac?

On MAC OS machines, enter the netstat -r command in order to view the PC routing table:

Does AnyConnect have split tunneling?

The AnyConnect Client configuration is now complete. However, when you configure AnyConnect via the Configuration Wizard, it configures the Split Tunnel policy as Tunnelall by default. In order to tunnel specific traffic only, split-tunneling must be implemented.

How to create an ACL for ASA?

1. Connect to the ASA > Go to enable mode > Then to global configuration mode > Create an ACL that permits traffic from the network behind the ASA to any. ( Note: Add additional ACL’s for additional internal networks).

What is split tunneling?

This is the process of letting a remote VPN user browse the web, and access local resources etc, from their location whilst connected to your VPN in this case via SSLVPN, but also from WebVPN or IPSEC VPN.

What happens when a VPN user terminates a session?

Normally when the remote VPN user terminates the session, the anyconnect installer will be uninstalled. The anyconnect keep-installer installed command leaves it installed on the user’s computer.

What is AnyConnect VPN?

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. AnyConnect VPN. The clientless WebVPN method does not require a VPN client to be installed on the user’s computer. You just open your web browser, ...

What happens when you have an inbound access list?

When you have an inbound access-list on the outside interface then all your decrypted traffic from the SSL WebVPN has to match the inbound access-list. You can either create some permit statements for the decrypted traffic or you can just tell the ASA to let this traffic bypass the access-list:

Why does my client tries to download AnyConnect?

The client tries to download the Anyconnect automatically, this is because of the anyconnect ask none default anyconnect command that we used. Since we are using a self-signed certificate you will get the following error message:

What is the IP address of AnyConnect?

You can see that we received IP address 192.168.10.100 (the first IP address from the VPN pool). Anyconnect creates an additional interface, just like the legacy Cisco VPN client does.

What happens after group policy configuration?

After the group policy configuration we have to create a tunnel group which binds the group policy and VPN pool together:

When remote users connect to our WebVPN, do they have to use HTTPS?

The following option is not required but useful, whenever someone accesses the ASA through HTTP then they will be redirected to HTTPS:

Overview

This is a configuration example of an AnyConnect SSL VPN on a Cisco ASA. This example uses ASA version 9.12 (3)12 and AnyConnect version 4.7.04056. You will need the AnyConnect packages for your OS on the ASA.

Configuration

Create the ip local pool to use for the SSL VPN. This is the subnet that users will get an IP address on when they connect to the SSL VPN. In this example, the users on the SSL VPN will get an IP address between 172.16.254.2 and 172.16.254.254.

Verification

In a web browser, navigate to the "group-url" that was configured for the SSL VPN. In this example, we'd navigate to https://1.1.1.1/ssl and login with the user we created. After logging in, the ASA would ask us to download the AnyConnect package for our OS. Once installed, we can login with the user we created and join the SSL VPN.

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Introduction

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This document describes how to configure the Cisco AnyConnect Secure Mobility Client via the Cisco Adaptive Security Device Manager (ASDM) on a Cisco Adaptive Security Appliance (ASA) that runs software Version 9.3(2).
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Prerequisites

  • Requirements
    The Cisco AnyConnect Secure Mobility Client web deployment package should be downloaded to the local desktop from which the ASDM access to the ASA is present. In order to download the client package, refer to the Cisco AnyConnect Secure Mobility Clientweb page. The web deploy…
  • Components Used
    The information in this document is based on these software and hardware versions: 1. ASA Version 9.3(2) 2. ASDM Version 7.3(1)101 3. AnyConnect Version 3.1 The information in this document was created from the devices in a specific lab environment. All of the devices used in …
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Background Information

  • This document provides step-by-step details about how to use the Cisco AnyConnect Configuration Wizard via the ASDM in order to configure the AnyConnect Client and enable split tunneling. Split-tunneling is used in scenarios where only specific traffic must be tunneled, opposed to scenarios where all of the client machine-generated traffic flows ac...
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Verify

  • Complete these steps in order to verify the client connection and the various parameters that are associated to that connection: 1. Navigate to Monitoring > VPN on the ASDM: 2. You can use the Filter By option in order to filter the type of VPN. Select AnyConnect Client from the drop down menu and all of the AnyConnect Client sessions.Tip: The sessions can be further filtered with th…
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Troubleshoot

  • You can use the AnyConnect Diagnostics and Reporting Tool (DART) in order to collect the data that is useful for troubleshooting AnyConnect installation and connection problems. The DART Wizard is used on the computer that runs AnyConnect. The DART assembles the logs, status, and diagnostic information for the Cisco Technical Assistance Center (TAC) analysis and does n…
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Related Information

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