What is a Captive Portal?

by | Feb 21, 2021 | CCNA, CCNP, CompTIA, Exclusive Articles, Featured, Network Security, Wireless Network And Security

Captive Portals

What is a Captive Portal?

Sometimes when we try to access public Wi-Fi in a restaurant, mall, or hotel, we are redirected to a web page that requests login credentials or requests us to accept Terms and Conditions. This type of web page is called a captive portal. A user is captive or unable to access the Internet unless he performs the required actions in a captive portal and hence the name. A captive portal is often used by public Wi-Fi providers to identify a user who is accessing the Wi-Fi. Sometimes it collects user information such as email address, phone number, or login credentials or requests users to accept the terms and conditions while accessing the network.


In this article, we will discuss:

  • What is a Captive Portal?

  • Why do we use a Captive Portal?

  • How is a Captive Portal implemented?

  • Security and Privacy Concerns of Captive Portals

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Amrita Mitra

Author

Ms. Amrita Mitra is an author, who has authored the books “Cryptography And Public Key Infrastructure“, “Web Application Vulnerabilities And Prevention“, “A Guide To Cyber Security” and “Phishing: Detection, Analysis And Prevention“. She is also the founder of Asigosec Technologies, the company that owns The Security Buddy.

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