All you need to know about captive portals

Captive Portal. Guest WiFi. Splash Pages. What is this all about?

While Captive Portals are one of the most largely extended technologies across businesses and organizations worldwide, many people still don’t know what they are, how they work, and what benefits they can provide.

If you are one of them and you want to learn more about Captive Portals, this article is for you.

What is a Captive Portal?

In simple terms, a Captive Portal is a web page or Splash Page that is displayed to newly connected users before they are eventually granted broader access to other network resources.

They are commonly used to present a logging or landing page that may require payment, authentication, acceptable user policy otherwise known as EULA, or other valid credentials that both the user and the host have to agree on.

They are frequently used for a wide range of mobile and pedestrian broadband services, including home hotspots and commercially provided WiFi like those found in airports or malls.

Additionally, captive portals can access residential wired networks like apartments and hotel rooms, not forgetting other enterprises like business centers.

How a Captive Portal Works

The Splash Page feature blocks users from being granted broader access to the network they are trying to connect to until the host has established verification.

For example, when a client enters a specific physical location and has a smartphone, they will be prompted to join a secure and free network connection via the guest WiFi network through various login methods.
When they do so, a captive portal is automatically displayed through the default browser on the smartphone. This portal will then request the client to key in personal information to access the internet service through this access point. If, in any case, the network detects that you had connected to the system earlier, you may be able to bypass the landing page.

schema showing how a user connects to the captive portal

The page can also be opened when the client opens a new page using the network rather than when they first connected to the network through this access point.

Customers do not have to worry because in most cases the information collected complies with local regulations and is solely for analytics or marketing purposes. The sort of data commonly collected with captive portals is usually the name, phone number, gender, and the client’s preferences.

Requirements of an excellent captive portal

  1. Captive Portals should be easy to use. This can be done by creating a simple, clear, and attractive user interface that is easy to navigate and provide full access in the shortest time possible.
  2. It should have the capability of gathering information. Modern Captive Portal should be able to collect as much information from clients as possible, in compliance with local data protection regulations, to paint a more accurate customer profile for the best customer experience.
  3. It should provide seamless integration with a back-end data store. A reliable data store is infinitely essential to store all this information to be analyzed. It should also have the ability to customize the level of customers’ needs.

Where captive portals are used

A captive portal is typically used in an open wireless network. A welcome message usually is displayed, showing the clients the requirements to access the system. The conditions may include things like the allowed ports or liability. 

The primary use of captive portals

Captive Portals are primarily used for communication purposes and marketing. Typically, access to the internet is restricted over the open WiFi until the client fills out a registration form. In doing so, they exchange personal data. This form will appear when they open a web page or automatically appear when they join the network.
This is where the name “captive” is born, as users cannot freely use the internet services until they accept the terms and conditions.

Sometimes the service is also called social WiFi as it may ask clients to join using their social media accounts like Facebook or LinkedIn. This makes it a powerful marketing tool.

Why implementing captive portals is beneficial to businesses and organizations

  • Captive Portals can capture lots of data. With the use of custom fields, the host can progressively profile the client, allowing them to collect additional information. This provides a platform for more focused marketing.
  • They are a great way to stop people from hogging bandwidth. Some users might clog the internet by heavily downloading files, making it slow even for regular usage. Captive portals can help prevent this by offering a customized plan for clients, limiting the size of files they can download in a session.
  • They help businesses understand customer’s behaviors. Through analytics, the host can monitor customers’ needs and tailor the advertisements accordingly.
  • They open new means of generating revenue. Captive portals may charge clients to use the internet service like in airports, or even request them to pay for advertisement space so that future clients may see their ads, which makes this a good source of income.

How to get started in implementing your captive portal solution

1 | Configure your Captive Portal

This can be done by a couple of steps that include selecting your SSID. SSID is the name that is usually given to a wireless network, which makes it easier to search and connect to it. If you do not have an SSID, you will have to create one.

Next, you will have to configure the Walled Garden. The Walled Garden lists all restricted sites that the guest client cannot access unless they go through the page. Additionally, you can choose the desired redirection page.

When using Captive Portals, you can get access to additional functionalities and customizations. For instance, you can set the connection time of each device to avoid clogging up the system. Additionally, you can also set the bandwidth limitation of a device, limiting the amount of data used in a particular time frame.

2 | Customize your Splash Page

A key step when setting up your Captive Portal. This can be done through the integrated builder included in your solution. Some solutions offer more advanced Splash Page builders than others.

When designing your Splash Page, or Login Screen, you can choose to either add a consent message, activating automatic translation, and even adding a paid access button if you wish to monetize the internet connection.

The company logo or the text you want to add can be done here. Various themes can be used depending on your company or organization to make it look more attractive and professional.


Modern captive portals solutions come with a myriad of options to log in and win internet access. 

Nowadays, the most popular login authentication types are email address, SMS, Active Directory, and social login. The last one consists of using a visitor’s social media accounts as a single sign-on to connect to the Guest Network. Frequent social network providers are Facebook, Twitter, or LinkedIn.

4 | Protect your Guest WiFi

Hackers usually take advantage of free Guest Wi-Fi connections to steal information from unsuspecting wireless users. The protection of users is hence very crucial. This can be done by choosing different login methods particular to the business needs, like seen above.

Moreover, it is strongly recommended to add an advanced DNS-based web-content filter to protect your guest WiFi network from unwanted online threats.

5 | Collect customer analytics from your portal

Finally, this is the last stage that involves collecting and analyzing the clients’ login information. This data provides businesses with qualified leads for their marketing efforts, as well as quality data to build more customized campaigns.

Cloud-based vs. Controller-based Captive Portal Solutions

A Cloud-based Captive Portal means managing your Guest Wi-Fi networks remotely. With controller-based solutions, on the other hand, the captive portal must be controlled on the premise.

Cloud-based portals allow network administrators to efficiently manage the Guest network via the cloud, check the portal’s status, and even troubleshoot remotely. The cloud will enable administrators to also react to problems right away when issues arise. As a result, IT managers can simplify and streamline the management of their Guest Wi-Fi.

Cloud-based solutions also dramatically reduce the cost of implementing and managing captive portals and allow for more scalable growth.


Organizations should be sure to hop on the advanced captive portal solutions to enjoy the vast benefits they have to offer.

Boundless Guest is the perfect choice for any business looking to implement an advanced Cloud-hosted Guest WiFi solution.

Contact us for a Free Trial or Schedule a Demo Today with our Sales Team.

Take a look at the Boundless Guest Brochure

Stay up to speed.
Subscribe to our newsletter.

FREE 9-day email course






Get a deep understanding on how to automate low-value and redundant network operations using the Meraki APIs.