Aspects of the present disclosure include systems and methods for injecting content into a webpage at or local to a network access gateway. For example, in an embodiment, a network access gateway is provided for accessing the internet. A user logs onto the internet through the network access gateway and request a webpage. The gateway requests the webpage from the webpage provider. Before the gateway delivers the webpage to the user, the gateway, or a content injection engine local to the gateway, injects content, such as, for example, advertisements or other useful information, into the webpage and then sends the altered webpage to the user.