After establishing an Internet connection, you can only access intranet sites. What is most likely the issue?

The situation described suggests that while there is an Internet connection established, the user is only able to access intranet sites. This behavior is typically indicative of a proxy settings issue.

When a device is misconfigured to use a proxy server, it may restrict access to external Internet resources while allowing connections to internal network sites (intranet). Proxy settings are designed to direct network traffic through a designated server; if this server is incorrectly configured or if there is a failure in connecting to the proxy server, it can result in the inability to access anything but intranet sites.

In contrast, issues related to network security settings might restrict access to certain types of sites or services but would not generally limit access exclusively to intranet sites. Router configuration issues could lead to broader connectivity problems and usually affect all types of traffic rather than just filtering out internet access. Browser compatibility problems might affect the ability to display or interact with certain types of web content but wouldn’t specifically block access to the internet while permitting intranet access.

Thus, understanding proxy settings is crucial as they can directly influence the ability to access external web content while still allowing use of internal network resources.