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Trusted Extensions Label Administration     Oracle Solaris 11.1 Information Library
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Document Information

Preface

1.  Labels in Trusted Extensions (Overview)

2.  Planning Labels in Trusted Extensions (Tasks)

3.  Creating a Label Encodings File (Tasks)

4.  Labeling Printer Output (Tasks)

Labels on Body Pages

Security Text on Banner and Trailer Pages

Specifying the "Protect As" Classification

Specifying Printer Banners

Specifying Channels

Configuring Security Text on Print Jobs (Task Map)

How to Specify the Text in PRINTER BANNERS

How to Specify Handling Instructions in CHANNELS

How to Set a Minimum "Protect As" Classification

5.  Customizing the LOCAL DEFINITIONS Section (Tasks)

6.  Planning an Organization's Encodings File (Example)

A.  Encodings File for SecCompany (Example)

Index

Specifying Channels

The CHANNELS section in the label_encodings file defines the lines that can appear below the PRINTER BANNERS lines on the lower third of the banner and trailer pages. The CHANNELS section can be specified to print a string whenever the label of a print job contains a certain compartment.

Commercial sites can customize the text in the CHANNELS section with any compartment bit. The following figure shows a CHANNELS warning on a print job's banner page at a commercial site.

Figure 4-7 Commercial Use of CHANNELS Section on Banner Page

image:Graphic shows the CHANNELS string on a banner page at a commercial site.

By convention in U.S. government installations, the channels lines of the banner page show the warnings that are associated with the compartments of the print job's label. Figure 4-8 shows a typical CHANNELS warning on a print job's banner page at a government installation: HANDLE VIA (CH B)/(CH A) CHANNELS JOINTLY.

The following discussion shows how the CHANNELS string HANDLE VIA (CH B)/(CH A) CHANNELS JOINTLY is specified for a print job whose label includes the compartment words A and B. For the purpose of the example, only (CH A) and (CH B) apply. However, because the compartment bit for a third channel (CH C) is included in the definitions, (CH C) is also mentioned in this discussion.

The example illustrates these features:

Figure 4-8 U.S. Government Use of CHANNELS Section on Banner Page

image:Graphic shows the CHANNELS output on the banner page at a government site.

In the following example, two suffixes CHANNELS JOINTLY and CHANNELS ONLY and a prefix HANDLE VIA are defined.

Example 4-1 Suffixes and Prefixes in the CHANNELS Section in a U.S. Government label_encodings File

CHANNELS:

WORDS:
name= CHANNELS JOINTLY;         suffix;
name= CHANNELS ONLY;            suffix;
name= HANDLE VIA;               prefix;

Next, the channel names (CH A), (CH B), and (CH C) are specified in two different ways to achieve the following results:

In the following example, the first three lines that define CHANNELS words in the preceding example are repeated.

This example focuses on how (CH A), (CH B), and (CH C) are encoded to appear with the CHANNELS ONLY suffix.

CHANNELS:

WORDS:

name= CHANNELS JOINTLY;         suffix;
name= CHANNELS ONLY;            suffix;
name= HANDLE VIA;               prefix;
name= (CH A);   prefix= HANDLE VIA; suffix= CHANNELS ONLY; compartments= 0 ~1 ~6;
name= (CH B);   prefix= HANDLE VIA; suffix= CHANNELS ONLY; compartments= ~0 1 ~6;
name= (CH C);   prefix= HANDLE VIA; suffix= CHANNELS ONLY; compartments= ~0 ~1 6;

The first three lines of name definitions in the CHANNELS section have the following results:

The last three lines in the preceding example are repeated in the following example. The repetition shows how (CH A), (CH B), and (CH C) are encoded to appear with the CHANNELS JOINTLY suffix when more than one of the words that is associated with bits 0, 1, and 6 is in the print job's label. A slash is inserted between the channels names when more than one of the bits that is defined in the CHANNELS section is in the print job's label.

Example 4-2 Encodings for More Than One Channel in CHANNELS Section in a U.S. Government Encodings File

name= (CH A);   prefix= HANDLE VIA; suffix= CHANNELS ONLY; compartments= 0 ~1 ~6;
name= (CH B);   prefix= HANDLE VIA; suffix= CHANNELS ONLY; compartments= ~0 1 ~6;
name= (CH C);   prefix= HANDLE VIA; suffix= CHANNELS ONLY; compartments= ~0 ~1 6;

name= (CH C);   prefix= HANDLE VIA; suffix= CHANNELS JOINTLY; compartments= 6;
name= (CH B);   prefix= HANDLE VIA; suffix= CHANNELS JOINTLY; compartments= 1;
name= (CH A);   prefix= HANDLE VIA; suffix= CHANNELS JOINTLY; compartments= 0;

These CHANNELS definitions illustrate the importance of order when compartments are being encoded. The first three lines handle the cases when only one of the channels' compartment bits is turned on, so the last three lines can handle cases when more than one bit is turned on. Therefore, none of the last three lines need to have any compartment bits explicitly set to 0. The result of these last three lines is that the suffix CHANNELS JOINTLY is always printed when any of two or more of the three compartment words that are associated with the channels is in the label.

The following excerpt from the label_encodings file shows that compartment bit 6 is associated with the label word CC.

SENSITIVITY LABELS:


WORDS:
  .
  .
  .
name= CC;                       minclass= TS; compartments= 6;

The next excerpt shows that compartment bit 1 is associated with the sensitivity label word B.

SENSITIVITY LABELS:

WORDS:
  .  .  .
name= B;                        minclass=  C; compartments= 1;

The next excerpt shows that compartment bit 0 is associated with sensitivity label word A.

SENSITIVITY LABELS:

WORDS:
   .   .   .
name= A;                        minclass=  C; compartments= 0;

To summarize, the channels line prints as HANDLE VIA (CH B)/(CH A) CHANNELS JOINTLY because of the following specifications:

For a sample CHANNELS planner, see Planning the Channels in a Worksheet.