Networking

Say you are at a cafe, and you want to surf the Web. But the WiFi is not secure. Or say your company lets you bring your laptop, but what if its firewall has blocked your favorite website? Is there no hope, besides paying $15 to a VPN provider?

There is, and it costs about $3.50 per month as of this writing.

Can you quickly close a TCP connection in your program by sending a reset (“RST”) packet?

Have you run into a problem that happens only once in a while, and you never seem to have enough information to figure it out? We all have. This is one such tale: except that it has a happier ending.