Remote-access Guide

cisco asa remote access vpn certificate

by Allan Kuhlman Published 2 years ago Updated 1 year ago
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Open the Cisco ASDM, then Under the Remote Access VPN

Virtual private network

A virtual private network extends a private network across a public network, and enables users to send and receive data across shared or public networks as if their computing devices were directly connected to the private network. Applications running on a computing device, e.g. …

window pane, then in the Configuration tab, expand Certificate Management and click 'CA Certificates'. Click the 'Add' button. Assign a 'Trustpoint Name' to the certificate (e.g. DigiCertCA2), And select the 'Install from a file' Radio Button and browse to DigiCertCA2.crt.

Full Answer

What is Cisco ASA remote access VPN?

Cisco ASA Remote Access VPN. The remote user requires the Cisco VPN client software on his/her computer, once the connection is established the user will receive a private IP address from the ASA and has access to the network. The Cisco VPN client is end-of-life and has been replaced by the Cisco Anyconnect Secure Mobility Client.

How do I set up a remote access VPN certificate?

Navigate to Configuration > Remote Access VPN > Certificate Management, and choose Identity Certificates . Click Add . Define a trustpoint name under Trustpoint Name. Click the Add a new identity certificate radio button. For the Key Pair, click New .

How do I add a CA certificate to the Cisco ASDM?

Open the Cisco ASDM, then Under the Remote Access VPN window pane, then in the Configuration tab, expand Certificate Management and click 'CA Certificates'. Click the 'Add' button.

How do I create intermediate certificates for a Cisco remote access VPN?

You will first need to create trustpoints for the two intermediate certificates DigiCertCA2.crt, and DigiCertCA.crt Open the Cisco ASDM, then Under the Remote Access VPN window pane, then in the Configuration tab, expand Certificate Management and click 'CA Certificates'.

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How do I add a certificate to ASA Anyconnect?

Navigate to Configuration > Remote Access VPN > Certificate Management , and choose Identity Certificates. Select the Identity Certificate created previously. Click Install .

How do I get a Cisco Anyconnect certificate?

Installing a self-signed certificateLog into the RV34x series router and navigate to Administration > Certificate.Select the default self-signed Certificate and click on the Export button to download your Certificate.In the Export Certificate window, enter a password for your Certificate.More items...•

Where is Cisco VPN certificate stored?

Current User\Personal\CertificatesThe client certificates that you generated are, by default, located in 'Certificates - Current User\Personal\Certificates'.

How do I renew Cisco Anyconnect VPN certificate?

It's quite easy:Generate a new named RSA pub/priv keypair of 2048 Bit.Configure a new trustpoint with the new labeled key.Generate a new CSR based on the new trustpoint.Get your new certificate with the CSR.Import the certificate into the trustpoint.Change the public interface to use the new trustpoint.Done!

How do I view Cisco ASA certificates?

In ASDM select "Configuration" and then "Device Management." Expand "Certificate Management" and select "Identity Certificates." Select the appropriate identity certificate from when your CSR was generated (the "Issued By" field should show as not available and the "Expiry Date" field will show Pending...).

How do I fix VPN certificate validation failure?

The most common reason for certificate validation failure on VPN is an expired certificate. VPN certificates are essential because they are a more secure way for authentication than preshared keys. Users reported that updating the certificate will solve the certificate validation failure error.

How do I get a VPN certificate?

Navigate to Microsoft Windows Certificate Enrollment page: http:///CertSrv.When prompted for authentication, enter username and password of a Domain User.Click Request a certificate.Click advanced certificate request.Select Administrator or User under Certificate Template.More items...

What is a VPN certificate?

Certificates can be used for authenticating VPN gateways and the Stonesoft VPN Client. In site-to-site VPNs, you can use both pre-shared keys and certificates as the authentication method. In mobile VPNs, certificates are always needed when the Stonesoft VPN Client is involved.

How do I remove VPN certificate?

Select [Tools] – [Internet Options]. Open the [Content] tab and click the [Certificates] button. Select your certificate and click [Remove]. Click [Yes].

How do I renew my Cisco ASA CLI SSL certificate?

ASDM: Configuration/device mgmt/advanced/SSL settings: select the interface and click on "edit" then select the "primary enrolled certificate" dropdown, select your new cert and then click OK. Don't forget to apply and save the new config. You're done.

How do I export a CA certificate from Cisco ASA?

Navigate to Configuration > Remote Access VPN > Certificate Management > Identity CertificatesClick Export.Choose a locate to export the file.Enter the Encryption Passphrase and confirm passphrase.

How do I add a wildcard certificate to Asa?

Add the certificate to the ASA Navigate to Configuration > Device Management > Certificate Management > Identity Certificates. Click Add.

How do I check VPN certificates?

Start-> type certmgr.exe Check if the Personal store or the Machine Store, to see if the Identity certificate is installed after that double click on the certificate and you will be able to see the details.

Do you need a license for Cisco AnyConnect?

x required the purchase of Essentials or Premium license + AnyConnect Mobile (L-ASA-AC-M-55xx) in order to support mobile devices (Smartphones, Tablets etc.). AnyConnect Mobile is now integrated into the new AnyConnect Plus license.

What are Cisco AnyConnect licenses?

The Cisco AnyConnect Secure Mobility Client offers datagram transport layer security (DTLS) to protect private information from within communications networks. Cisco Cloud Web Security in AnyConnect licenses blocks malware content by deconstructing webpages and online traffic in general.

Do Cisco AnyConnect licenses expire?

Our AnyConnect licenses on active/standby ASAs are about to expire in the beginning of the next year. Based on the AnyConnect FAQ I found, I learnt, that I do not need to do anything when the renewal is ordered.

What is the difference between ASA and RFC 5019?

The ASA uses RFC 2560 for OCSP. One of the differences in the two RFCs is that RFC 5019 does not accept signed requests sent by ASA. It is possible to force the Microsoft OCSP service to accept those signed requests and reply with the correct signed response.

What is OCSP in Cisco?

This document describes how to use Online Certificate Status Protocol (OCSP) validation on a Cisco Adaptive Security Appliance (ASA) for certificates presented by VPN users. Example configurations for two OCSP servers (Microsoft Windows Certificate Authority [CA] and OpenSSL) are presented. The Verify section describes detailed flows on the packet level, and the Troubleshoot section focuses on typical errors and problems.

Can an OCSP response be signed by a different CA?

An OCSP response can be signed by a different CA. In such a case, it is necessary to use the match certificate command in order to use a different trustpoint on the ASA for OCSP certificate validation.

Does ASA use OCSP?

ASA does not use the OCSP service to try to check the certificate presented by the OCSP service. Add a template for the certificate on the CA. Navigate to CA > Certificate Template > Manage, select OCSP Response Signing, and duplicate the template.

Does OCSP have a revocation check?

Since the OCSP responder certificate has the 'OCSP no revocation checking' extension, the certificate is not verified, even when OCSP is forced to validate against the OPENSSL trustpoint. By default, all trustpoints are searched when the ASA is trying to verify the user certificate.

How many interfaces does an ASA have?

The ASA has two interfaces: inside and outside. Imagine the outside interface is connected to the Internet where a remote user wants to connect to the ASA. On the inside we find R1, I will only use this router so the remote user has something to connect to on the inside network. Let’s look at the configuration!

What is VPN_POLICY?

The group policy is called VPN_POLICY and it’s an internal group policy which means it is created locally on the ASA. You can also specify an external group policy on a RADIUS server. I added some attributes, for example a DNS server and an idle timeout (15 minutes). Split tunneling is optional but I added it to show you how to use it, it refers to the access-list we created earlier.

Does Cisco VPN require ASA?

The remote user requires the Cisco VP N client software on his/her computer, once the connection is established the user will receive a private IP address from the ASA and has access to the network .

Can remote VPN users access certain networks?

If you want to configure an access-list so the remote VPN users can only reach certain networks , IP addresses or ports then you can apply this under the group policy.

Can you use VPN on remote network?

If you don’t want this then you can enable split tunneling. With split tunneling enabled, we will use the VPN only for access to the remote network. Here’s how to enable it:

How to get CA certificate in Cisco?

Open the Cisco ASDM, then Under the Remote Access VPN window pane, then in the Configuration tab, expand Certificate Management and click 'CA Certificates'.

Do you need a trustpoint for each certificate in the chain?

You will first need to create trustpoints for the two intermediate certificates DigiCertCA2.crt, and DigiCertCA.crt

Does ADSM show certificate details?

The ADSM will then show your certificate details under trustpoint.

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Introduction

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This document describes the various operations to successfully install and use a third-party trusted Secure Socket Layer (SSL) digital certificate on the Adaptive Security Appliance (ASA) for Clientless SSLVPN and the AnyConnect client connections. A GoDaddy Certificate is used in this example. Each step contains th…
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Prerequisites

  • Requirements
    This document requires access to a trusted third-party Certificate Authority (CA) for certificate enrollment. Examples of third-party CA vendors include, but are not limited to, Baltimore, Cisco, Entrust, Geotrust, G, Microsoft, RSA, Thawte, and VeriSign. Before you start, verify that the ASA h…
  • Components Used
    This document uses an ASA 5500-X that runs software version 9.4.1 and ASDM version 7.4(1). The information in this document was created from the devices in a specific lab environment. All of the devices used in this document started with a cleared (default) configuration. If your netwo…
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Configure

  • The SSL protocol mandates that the SSL Server provide the client with a server certificate for the client to perform server authentication. Cisco does not recommend use of a self-signed certificate because of the possibility that a user could inadvertently configure a browser to trust a certificate from a rogue server. There is also the inconvenience to users to have to respond to a security w…
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Verify

  • Use these steps in order to verify successful installation of the third-party Vendor Certificate and use for SSLVPN connections.
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Troubleshoot

  • Troubleshooting Commands
    These debug commands are to be collected on the CLI in the case of an SSL Certificate Installation failure: debug crypto ca 255 debug crypto ca messages 255 debug crypto ca transactions 255
  • Common Issues
    Untrusted certificate warning when using a valid third-party SSL certificate on the external interface on ASA running 9.4(1) and later. Solution: This issue presents itself when an RSA keypair is used with the certificate. On ASA versions from 9.4(1) onwards, all the ECDSA and RSA cipher…
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Appendix

  • Appendix A: ECDSA or RSA
    The ECDSA algorithm is a part of the Elliptic curve cryptography (ECC) and uses an equation of an elliptic curve to generate a Public Key whereas the RSA algorithm uses the product of two primes plus a smaller number to generate the Public Key. This means that with ECDSA the same level o…
  • Appendix B: Use OpenSSL to Generate a PKCS12 Certificate from an Identity Certificate, CA Certi…
    1. Ensure that OpenSSL is installed on the system that this process is run on. For Mac OSX and GNU/Linux users, this will be installed by default. 2. Switch to a working directory.On Windows: By default, the utilities are installed in C:\Openssl\bin. Open a command prompt in this location.On …
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