Due to the RCF rules, the test packets ensure that closed ports answer with RST packets and that open ports don’t provide a response. Not all routers send error messages if a port is filtered, which could mean that a filtered port is involved if no message appears (in addition to the...
There is another peculiarity. An A student also writes down the solution to the math problem on the page (mind you, this math problem is not really random but relevant to the page itself). It’s essential to prevent one from forging all pages from 123 to the current one even in a ye...