Cisco Cisco Firepower Management Center 2000 Entwickleranleitung
Version 5.3
Sourcefire 3D System eStreamer Integration Guide
280
Understanding Discovery & Connection Data Structures
Host Discovery and Connection Data Blocks
Chapter 4
User Server Data Block
The User Server data block contains server details from a user input event. The
User Server data block has a block type of 76 in the series 1 group of blocks.
The following diagram shows the basic structure of a User Server data block:
The following diagram shows the basic structure of a User Server data block:
The
table describes the fields of the User Server
data block.
Byte
0
1
2
3
Bit
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
User Server Data Block Type (76)
User Server Block Length
IP Range
Sp
ec
ification
Generic List Block Type (31)
Generic List Block Length
IP Address Range Specification Data Blocks*
Port
Protocol
User Server Data Block Fields
F
IELD
N
UMBER
OF
B
YTES
D
ESCRIPTION
User Server
Data Block
Type
uint32
Initiates a User Server data block. This value is
always 76.
User Server
Block Length
uint32
Total number of bytes in the User Server data
block, including eight bytes for the user server
block type and length fields, plus the number of
bytes of user server data that follows.
Generic List
Block Type
uint32
Initiates a Generic List data block. This value is
always 31.
Generic List
Block Length
uint32
Number of bytes in the Generic List block and
encapsulated data blocks. This number includes
the eight bytes of the generic list block header
fields, plus the number of bytes in all of the
encapsulated data blocks.