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flow-mask

flow-mask(1)						      General Commands Manual						      flow-mask(1)

NAME

       flow-mask -- Apply tags to flow files.

SYNOPSIS

       flow-mask [-hk]	[-b big|little]  [-C comment]  [-d debug_level]  [-m mask_fname]  [-M active_def ...]

DESCRIPTION

       The flow-mask utility is used to modify the source and destination mask length's in flow records.

OPTIONS

       -b big|little
		 Byte order of output.

       -C Comment
		 Add a comment.

       -d debug_level
		 Enable debugging.

       -h	 Display help.

       -k	 Keep time from input.

       -m mask_fname
		 Load masks from mask_name.  Defaults to /etc/flow-tools/cfg/mask

       -M mask_def
		 Use active_def as the active tag definition(s).

       The configuration file is a collection of definitions.  A definition lists a sequence of prefixes and the mask length to replace the match-
       ing prefix with.  Lines begining with # are treated as comments and ignored.

       mask-definition command		   Description
       ----------------------------------------------------------------------
       mask-definition			   Begin mask-definition section
					   mask-definition foo

       prefix				   List the prefix to match on and the
					   replacement mask.
					   prefix 128.146/16 24

EXAMPLES

       #
       #file: masks
       #
       mask-definition foo
       # All networks in 128.146/16 are /24's.
	prefix 128.146/16 24
       # except for 128.146.214/24, which are /32's.
	prefix 128.146.214/24 32

       flow-cat flows | flow-mask -mfoo -Fmasks | flow-print -f4

FILES

	 Configuration files:
	   Mask - /etc/flow-tools/cfg/mask.cfg.

BUGS

       None known.

AUTHOR

       Mark Fullmer maf@splintered.net

SEE ALSO

       flow-tools(1)

																      flow-mask(1)