How to setup a basic firewall using ASA?

I was tasked to setup a basic firewall on Cisco ASA 5506. A basic firewall that connects to the router, 2 interfaces - 1 ext and 1 int, and with the NAT function. BTW, how to start to set it up after taking it out from the box. Please show step-by-step.

Thanks in advance.

Cisco

Last Comment

MichaelBalack

8/22/2022 - Mon

Mohammed Khawaja

4/26/2015

You are provided a console cable which you will use to connect the ASA to your PC's serial port. Use a terminal emulation software and you have access to the ASA's console. If you have never configured a firewall then I suggest you get some professional to help you with. When you say basic setup, what do you mean? A basic setup for some is to block all and allow HTTP and HTTPS whereas for some it could be as per below:

1. Allow ICMP for ping traffic
2. Allow SMTP to your provider
3. Allow access to FTP and FTPS sites
4. Allow users to user Outlook and connect to services such as Outlook.com, etc.
5. Etc, etc, etc.

Identify your requirements and strongly suggest to get someone with experience to configure it for you.

MichaelBalack

4/26/2015

ASKER

Hi Mohammed,

Thanks for your suggestions.

MichaelBalack

4/26/2015

ASKER

Hi experts,

A basic firewall with NAT will do. If i am not wrong, using console with commands is able will do. I personally know how to setup firewall, such as, fortigate, juniper, sonicwall.

However, i set them up in gui, and i am very poor in commands. Appreciate for any help.

This is the best money I have ever spent. I cannot not tell you how many times these folks have saved my bacon. I learn so much from the contributors.

rwheeler23

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Mohammed Khawaja

4/26/2015

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MichaelBalack

4/26/2015

ASKER

Hi Mohammed,

Thanks for the article, give me some time to go through it.

SOLUTION

Pete Long

4/26/2015

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MichaelBalack

5/7/2015

ASKER

Very much appreciate the articles introduced.

Expert 1 - Mohammed Khawaja provide the full and lengthy ASA setup plus some other more in-depth configuration. Although those in-depth ones may not needed at this moment, but, is a good references/guidance that may need at time to come.

Expert 2 - PeteLong provide an easy-to-understanding and straightforward article to get the ASA operational with basic firewalling features. Almost all of the settings are needed.