How to force a captive portal page to pop up (Like a Starbucks or McDonald's WiFi landing page)? Normally, Safari provides a pop-up window for the public  Wi-Fi's landing page: requesting the user to agree to TOS (Terms of Service). 

Attempts to login to Wi-Fi were not successful because of the absence of the landing page:


ifconfig revealed an IP address (172.31.99.185) was assigned to the laptop's Wi-Fi adapter
attempts to ping 172.31.99.1 failed
browsing to http://172.31.99.1/ failed
browsing to http://www.google.com/ failed


Is there a Safari menu item or process that will call the TOS pop-up?
Go to http://captive.apple.com it’s the only way to ensure it pops up.