Remote-access Guide

cisco asa remote access vpn configuration guide

by Noelia Ortiz Published 2 years ago Updated 1 year ago
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There are eight basic steps in setting up remote access for users with the Cisco ASA. Step 1. Configure an Identity Certificate Step 2. Upload the SSL VPN Client Image to the ASA Step 3. Enable AnyConnect VPN Access Step 4. Create a Group Policy Step 5. Configure Access List Bypass Step 6. Create a Connection Profile and Tunnel Group Step 7.

There are eight basic steps in setting up remote access for users with the Cisco ASA.
  1. Configure an Identity Certificate.
  2. Upload the SSL VPN Client Image to the ASA.
  3. Enable AnyConnect VPN Access.
  4. Create a Group Policy.
  5. Configure Access List Bypass.
  6. Create a Connection Profile and Tunnel Group.
  7. Configure NAT Exemption.
Mar 19, 2009

Full Answer

How to setup a remote access VPN?

Use a VPN Router with the built-in VPN server capability

  • Launch a browser window from your PC connected to the routers’ network
  • Enter the router IP address in the search to login into your router
  • Enter the username and password of your router and login into it.
  • Go to the Settings page and select VPN Service or setup page.
  • Enable the VPN service by selecting the checkbox and apply

Can the Cisco ASA be used as a router?

The ASA is NOT a router, though and while you can do things on the ASA that can make it act something like a router it is important to understand the differences between true routing and what the ASA actually does.

How to connect Cisco ASA on PC?

  • Connect the network cable from the modem to port 0 (default outside port) on the ASA.
  • Connect your computer to one of the other ports on the ASA, which should be on the inside network by default.
  • Open a browser on your computer and go to 192.168.
  • Click Run ASDM.
  • Log in.

How to setup a Cisco VPN?

How To Setup Vpn Cisco Rv340? February 18, 2022 by Cathie. Select Settings, VPN, and then add a VPN connection. Enter the public WAN IP address provided by your ISP, select a VPN type as PPTP, and enter the user name and password in the section below. The newly created PPTP VPN network adapter must now be connected.

How many interfaces does an ASA have?

Which crypto protocol allows the IPsec client and the ASA to establish a shared secret key?

What is the default LAN to LAN tunnel group?

What files can Cisco AnyConnect have?

What is the first phase of ISAKMP?

Is Mobike available on ASA?

Do you need a mask for a VPN?

See 2 more

About this website

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How do I enable VPN on ASA?

Set up VPN on a Cisco ASA deviceOpen ASDM.Go to Wizards VPN Wizards. IPsec (IKEv1) Remote Access VPN Wizard.Bypass the interface access lists: ... Click Next.Choose Microsoft Windows client using L2TP over IPsec and check the box for MS-CHAP-V2.Click Next.Authenticate the machine: ... Click Next.More items...

What is remote access VPN Cisco?

Remote access VPNs allow users to connect to a central site through a secure connection over a TCP/IP network such as the Internet. Remote access VPNs for IPsec IKEv2. 8.4(1) Added IPsec IKEv2 support for the AnyConnect Secure Mobility Client.

How do I configure AnyConnect on ASA 5505?

Quick guide: AnyConnect Client VPN on Cisco ASA 5505Click on Configuration at the top and then select Remote Access VPN.Click on Certificate Management and then click on Identity Certificates.Click Add and then Add a new identity certificate.Click New and enter a name for your new key pair (ex: VPN)More items...•

Can Cisco ASA do route based VPN?

ASA supports route-based VPN with the use of Virtual Tunnel Interfaces (VTIs) in version 9.8 and later.

How do I setup remote access to VPN?

Configure Remote Access as a VPN ServerOn the VPN server, in Server Manager, select the Notifications flag.In the Tasks menu, select Open the Getting Started Wizard. ... Select Deploy VPN only. ... Right-click the VPN server, then select Configure and Enable Routing and Remote Access.More items...•

How do I set up AnyConnect on ASA?

Configure AnyConnect ConnectionsConfigure the ASA to Web-Deploy the Client.Enable Permanent Client Installation.Configure DTLS.Prompt Remote Users.Enable AnyConnect Client Profile Downloads.Enable AnyConnect Client Deferred Upgrade.Enable DSCP Preservation.Enable Additional AnyConnect Client Features.More items...•

Is Cisco AnyConnect SSL or 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 type of VPN is Cisco AnyConnect?

Cisco 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.

How does Cisco AnyConnect VPN client work?

When a user opens a VPN session using Cisco AnyConnect, the AnyConnect client connects to the adaptive security appliance using SSL. The client authenticates with the adaptive security appliance and is assigned an internal IP address on the network.

What is the difference between route-based and policy-based VPN?

In a policy-based VPN configuration, the action must be permit and must include a tunnel. Route-based VPNs support the exchange of dynamic routing information through VPN tunnels. You can enable an instance of a dynamic routing protocol, such as OSPF, on an st0 interface that is bound to a VPN tunnel.

What VPN types are supported by ASA?

For VPN Services, the ASA 5500 Series provides a complete remote-access VPN solution that supports numerous connectivity options, including Cisco VPN Client for IP Security (IPSec), Cisco Clientless SSL VPN, network-aware site-to-site VPN connectivity, and Cisco AnyConnect VPN client.

What is route-based VPN?

A route-based VPN is a configuration in which an IPsec VPN tunnel created between two end points is referenced by a route that determines which traffic is sent through the tunnel based on a destination IP address.

What does a remote access VPN do?

A remote access virtual private network (VPN) enables users who are working remotely to securely access and use applications and data that reside in the corporate data center and headquarters, encrypting all traffic the users send and receive.

What is the difference between remote access and a VPN?

A VPN is a smaller private network that runs on top of a larger public network, while Remote Desktop is a type of software that allows users to remotely control a computer. 2. Remote Desktop allows access and control to a specific computer, while VPN only allows access to shared network resources.

What is the difference between site-to-site VPN and remote access VPN?

A remote access VPN connects remote users from any location to a corporate network. A site-to-site VPN, meanwhile, connects individual networks to each other.

How does VPN remote work?

A remote access VPN works by creating a virtual tunnel between an employee's device and the company's network. This tunnel goes through the public internet but the data sent back and forth through it is protected by encryption and security protocols to help keep it private and secure.

How many interfaces does an ASA have?

An ASA has at least two interfaces, referred to here as outside and inside. Typically, the outside interface is connected to the public Internet, while the inside interface is connected to a private network and is protected from public access.

Which crypto protocol allows the IPsec client and the ASA to establish a shared secret key?

Specify the Diffie-Hellman group for the IKE policy—the crypto protocol that allows the IPsec client and the ASA to establish a shared secret key.

What is the default LAN to LAN tunnel group?

There are two default tunnel groups in the ASA system: DefaultRAGroup, which is the default remote-access tunnel group, and DefaultL2Lgroup, which is the default LAN-to-LAN tunnel group. You can change these groups, but do not delete them. The ASA uses these groups to configure default tunnel parameters for remote access and LAN-to-LAN tunnel groups when there is no specific tunnel group identified during tunnel negotiation.

What files can Cisco AnyConnect have?

Virtual File System creation for each context can have Cisco Anyconnect files like Image and profile.

What is the first phase of ISAKMP?

Phase 1 creates the first tunnel to protect later ISAKMP negotiation messages. Phase 2 creates the tunnel that protects data travelling across the secure connection.

Is Mobike available on ASA?

Mobike is available by default on ASAs since version 9.8 (1), meaning Mobike is “always on.” Mobike is enabled for each SA only when the client proposes it and the ASA accepts it. This negotiation occurs as part of the IKE_AUTH exchange.

Do you need a mask for a VPN?

The address mask is optional. However, You must supply the mask value when the IP addresses assigned to VPN clients belong to a non-standard network and the data could be routed incorrectly if you use the default mask. A typical example is when the IP local pool contains 10.10.10.0/255.255.255.0 addresses, since this is a Class A network by default. This could cause routing issues when the VPN client needs to access different subnets within the 10 network over different interfaces.

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:

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 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 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 is an ayconnECT_policy?

The group policy is called “ANYCONNECT_POLICY” and it’s an internal group policy which means that we configure it locally on the ASA. An external group policy could be on a RADIUS server.

1. Check Cisco firewall ASA version

Make sure you have ASA 8.2.2 and up. You cannot connect your Windows clients if you have ASA 8.2.1 because of the Cisco software bug.

2. Start Cisco firewall IPsec VPN Wizard

Login to your Cisco firewall ASA5500 ASDM and go to Wizard > IPsec VPN Wizard ... and follow up the screens.

3. Add Transform Set

Go to Configuration > Remote Access VPN > Network (Client) Access > Advanced > IPSec > Crypto Maps. Edit the IPSec rules and add "TRANS_ESP_3DES_SHA" and click "Ok" button.

How many Cisco router configuration examples are there?

All of the above are supported by 20 Complete configuration examples on Cisco Routers and ASA Firewalls, plus over 40 Network Diagrams and Troubleshooting Instructions.

Can you get a discount on the configuration guide?

By purchasing this configuration guide, you will be getting huge discounts for the future updated editions of the ebook. Just make sure to subscribe to my "Customers Email list" (at the download page after purchasing the ebook) in order to be eligible for the discount prices.

Is Cisco a difficult world to learn?

The Cisco world is difficult and confusing to learn. Unless you do it *every day* it's hard to remember what is needed. Your books make this a lot easier when less experienced people such as myself are called upon to administer Cisco equipment. Thank you and I am very happy with my purchase."

Is VPN configuration tutorial useful?

Even if you don't find what you want right now in this guide (something unlikely in my opinion), I'm sure that this VPN Configuration Tutorial will be extremely useful in your whole future career as a Cisco Network Engineer.

How many interfaces does an ASA have?

An ASA has at least two interfaces, referred to here as outside and inside. Typically, the outside interface is connected to the public Internet, while the inside interface is connected to a private network and is protected from public access.

Which crypto protocol allows the IPsec client and the ASA to establish a shared secret key?

Specify the Diffie-Hellman group for the IKE policy—the crypto protocol that allows the IPsec client and the ASA to establish a shared secret key.

What is the default LAN to LAN tunnel group?

There are two default tunnel groups in the ASA system: DefaultRAGroup, which is the default remote-access tunnel group, and DefaultL2Lgroup, which is the default LAN-to-LAN tunnel group. You can change these groups, but do not delete them. The ASA uses these groups to configure default tunnel parameters for remote access and LAN-to-LAN tunnel groups when there is no specific tunnel group identified during tunnel negotiation.

What files can Cisco AnyConnect have?

Virtual File System creation for each context can have Cisco Anyconnect files like Image and profile.

What is the first phase of ISAKMP?

Phase 1 creates the first tunnel to protect later ISAKMP negotiation messages. Phase 2 creates the tunnel that protects data travelling across the secure connection.

Is Mobike available on ASA?

Mobike is available by default on ASAs since version 9.8 (1), meaning Mobike is “always on.” Mobike is enabled for each SA only when the client proposes it and the ASA accepts it. This negotiation occurs as part of the IKE_AUTH exchange.

Do you need a mask for a VPN?

The address mask is optional. However, You must supply the mask value when the IP addresses assigned to VPN clients belong to a non-standard network and the data could be routed incorrectly if you use the default mask. A typical example is when the IP local pool contains 10.10.10.0/255.255.255.0 addresses, since this is a Class A network by default. This could cause routing issues when the VPN client needs to access different subnets within the 10 network over different interfaces.

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