Campbell-scientific CR3000 Micrologger Instrukcja Użytkownika Pobierz pdf (Strona 72)

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Section 5. System Overview

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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)

5.1.9.2 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.

Up to three levels of lockout can be set. Valid pass codes are 1 through 65535 (0

is no security).

Note If a pass code is set to a negative value, a positive code must be entered to

unlock the CR3000. That positive code will equal 65536 + (negative security

code). For example, a security code of -1111 must be entered as 64425 to unlock

the CR3000.

Methods of enabling pass-code lockout security include the following:

• Status table – Security(1), Security(2) and Security(3) registers are writable

variables in the Status table wherein the pass codes for security levels 1

through 3 are written, respectively.

• integrated keyboard / display settings

• Device Configuration Utility (DevConfig) – Security passwords 1 through 3

are set on the Deployment tab

• SetSecurity() instruction – SetSecurity() is only executed at program

compile time. It may be placed between the BeginProg and Scan()

instructions.

Note Deleting SetSecurity() from a CRBasic program is not equivalent to

SetSecurity(0,0,0). Settings persist when a new program is downloaded that has

no SetSecurity() instruction

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