How to install an SSL Certificate on Cisco ASA 5500 series?

This comprehensive tutorial provides step by step instructions on how to generate a CSR code and install an SSL Certificate on Cisco ASA 5500 series. On top of that, you will also learn a few interesting facts about Cisco’s history. If you’ve already generated the CSR code elsewhere, you can skip the first part and jump straight to the installation instructions.

Generating a CSR (Certificate Signing Request) code is an essential part of your SSL application process. The CSR code is a block of encoded text containing your contact data. Your CA (Certificate Authority) will use this information to verify your identity and sing your SSL Certificate. Here’s how to create a CSR code on Cisco ASA 5500 series:

10. Double-check the info you’ve just entered and click OK

11. Next, In the Add Identity Certificate window, click Advanced

12. In the FQDN box, enter the fully-qualified domain name through which the device will be accessed externally, or the same FQDN you’ve added to the CN value in step 6

13. Click OK and then hit the Add Certificate button

14. Save your CSR code as a text file. You can use any text editor such as Notepad, for example.

That’s it! Now, you can use your CSR code during the SSL order process. After your CA signs your SSL Certificate and sends the relevant files to your inbox, you can proceed with the installation.

Your very first step is to prepare all your SSL Certificate files. You should receive a ZIP Archive from your CA with the primary and intermediate certificates inside.

Note: If your CA requires two intermediate certificates, for best browser compatibility, you need to copy them within own corresponding .crt files and install them one at a time.

4. Next, you have to install the intermediate certificate. Log into your ASDM account and go to Configuration > Device Management

5.Expand the Certificates Management tree and click on CA Certificates

6. Now, click Add

7. In the newly opened window, you can either click Browse to import your intermediate Certificate from your device, or alternatively, check the Paste Certificate in PEM format radio button, and copy the contents of your Intermediate CA cert manually. After you’re done, click Install Certificate

8. Now it’s time to install your primary certificate. Go to Configuration > Device Management

9. Expand the Certificates Management tree and click on CA Certificates

10. Next, locate the identity certificate you created from the CSR generation and click Install

11. In the Install Identity Certificate Window, specify the location and path of your SSL Certificate file

12. Click Install. A dialog box will confirm the successful installation.

Congratulations, you’ve successfully added an SSL Certificate to Cisco ASA 5500 series.

Cisco Systems, Inc. is an American technology conglomerate, specializing in networking hardware and software. Founded in 1984, in San Francisco by Leonard Bosack and Sandy Lemer, Cisco System is now located in San Jose, California.

Cisco offers a wide range of products and services for the corporate market, small businesses, and home users.

Cisco ASA (Adaptive Security Appliance) software is a proven firewall and network security platform with the following features:

Listed below are the versions of Cisco ASA 5500 series:

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