This script is Copyright (C) 2008-2017 Tenable Network Security, Inc.
It is possible to determine which TCP ports are open.
This plugin is a classical TCP port scanner.
It shall be reasonably quick even against a firewalled target.
Once a TCP connection is open, it grabs any available banner
for the service identification plugins.
Note that TCP scanners are more intrusive than
SYN (half open) scanners.
Protect your target with an IP filter.
Risk factor :
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