Not sure what information is being passed by your web browser to a site you are visiting? This small utility displays all request headers being passed by a web request sent to portchekers.com
| Connection | Keep-Alive |
|---|---|
| Accept | text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 |
| Accept-Encoding | gzip |
| Accept-Language | en-US,en;q=0.5 |
| Host | www.portcheckers.com |
| If-Modified-Since | Thu, 06 May 2021 06:51:23 GMT |
| User-Agent | CCBot/2.0 (https://commoncrawl.org/faq/) |
| CF-IPCountry | US |
| X-Forwarded-For | 3.215.79.116 |
| CF-RAY | 6630cc6bcd60e0b6-IAD |
| X-Forwarded-Proto | https |
| CF-Visitor | {"scheme":"https"} |
| CF-Connecting-IP | 3.215.79.116 |
| CDN-Loop | cloudflare |
| cf-request-id | 0ad25e175a0000e0b699933000000001 |
When you open a page through a browser, typing in the address bar, there is a connection to a remote server, usually to port 80. Such a request is called GET-request - this is one of the main types of HTTP-protocol requests. Sending a request, as well as its contents, usually hidden from users, but there is nothing secret about them.