Campbell-scientific CR1000 Measurement and Control System Manual do Utilizador Página 72

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Section 5. System Overview
72
LoggerNet:
All datalogger functions and data are easily accessed via RS-232 and Ethernet
using Campbell Scientific datalogger support software.
Cora command find-logger-security-code.
Telnet:
Watch IP traffic in detail. IP traffic can reveal potentially sensitive
information such as FTP login usernames and passwords, and server
connection details including IP addresses and port numbers.
Watch serial traffic with other dataloggers and devices A Modbus capable
power meter is an example.
View data in the Public and Status tables.
View the datalogger program, which may contain sensitive intellectual
property, security codes, usernames, passwords, connection information, and
detailed or revealing code comments.
FTP:
Send and change datalogger programs.
Send data that have been written to a file.
HTTP:
Send datalogger programs.
View table data.
Get historical records or other files present on the datalogger drive spaces.
More access is given when a .csipasswd is in place (so make sure users with
administrative rights have strong log-in credentials)
5.1.10.2 Pass-code Lockout
Pass-code lockouts (historically known simply as "security codes") are the oldest
method of securing a Campbell Scientific datalogger. Pass-code lockouts can
effectively lock out innocent tinkering and discourage wannabe hackers on non-IP
based telecommunications links. However, any serious hacker with physical
access to the datalogger or to the telecommunications hardware can, with only
minimal trouble, overcome the five-digit pass-codes blocking access. Systems
that can be adequately secured with pass-code lockouts are probably limited to:
private, non-IP radio networks
direct links (hardwire RS-232, short-haul, multidrop, fiber optic)
non-IP satellite
land-line, non-IP based telephone, where the telephone number is not
published.
cellular phone wherein IP has been disabled, providing a strictly serial
connection.
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