Re: Port function and scanning



NoSpam <NoSpam@xxxxxxxxxxx> wrote:
1. Is there a good internet document describing ports, their
function and role, particularly for the windows OS?

Ports are a concept being part of the TCP/IP protocol family. This has
nothing to do with Windows. Just read the RFCs, or try Richard Stevens'
"UNIX Network Programming".

You could start here, too: http://en.wikipedia.org/wiki/TCP/IP

2. Are there trustworthy port scanning services available?

Better scan yourself, i.e. using nmap. Port scanning web services are
b0rken by concept, because they cannot determine, if your machine has
open ports or if the network in between modifies traffic.

Yours,
VB.
--
"Es muss darauf geachtet werden, dass das Grundgesetz nicht mit Methoden
geschützt wird, die seinem Ziel und seinem Geist zuwider sind."

Gustav Heinemann, "Freimütige Kritik und demokratischer Rechtsstaat"
.