[crn]

Why the first 1056 Ports?

Internet ports are numbered from 1 through 65535, but the first 1023 ports are special. By tradition, and some enforcement, ports 1 through 1023 are generally reserved for the acceptance of incoming connections by services running on the receiving system. Internet services "listen" on various standard low-numbered ports so that clients wishing to have access to those services know where they may be found. Web servers traditionally listen on port 80, eMail servers listen on ports 25 and 110, FTP servers listen on port 21 and Telnet servers listen on port 23. And the list goes on. Here's the official Internet Assigned Numbers Authority (IANA) port assignment list.

Although it is possible to have higher-numbered ports listening for incoming connections, our scan of the entire "service port range" will detect all standard services running and listening on the standard service ports.

Due to the insecure behavior of Microsoft's Windows operating systems, we have added an additional 33 ports to these first 1023 ports, bringing the total to 1056. Windows has a tendency to establish globally available listening services on the first few ports in the "client port" range which begins just past 1023. If you are not running a personal firewall, or you are allowing ShieldsUP! probes into your network, you may discover one or more additional open ports at, or just above, 1024.

: hitthewa ...za one koji ne znaju čitati ShildsUP testira samo prvih 1056 portova(!) a ostale portove možete/morate provjeriti ručno upisujući broj porta, ako želite testirati svih 65535 portova probajte sa ovim scanerom : http://www.auditmypc.com/freescan/selscan.asp