Cisco Cisco Firepower Management Center 2000 Entwickleranleitung

Version 5.3

Sourcefire 3D System eStreamer Integration Guide

247

Understanding Discovery & Connection Data Structures

Host Discovery and Connection Data Blocks

Chapter 4

VLAN Data Block

The VLAN data block contains VLAN tag information for a host. The VLAN data 

block has a block type of 14 in the series 1 group of blocks.The following diagram 

shows the format of the VLAN data block:

String Block 

Length

uint32

Number of bytes in the String data block 

containing the sub-server name, including eight 

bytes for the String block type and length fields, 

plus the number of bytes in the sub-server name.

Sub-Server

string

Contains the name of the sub-server affected by 

the listed vulnerabilities.

List Block 

Type

uint32

Initiates a list that contains zero or more VDB 

vulnerability ID numbers encapsulated in Integer 

data blocks.

List Block 

Length

uint32

Number of bytes in the vulnerability ID list, 

including eight bytes for the list block type and 

length fields, plus the number of bytes in the 

encapsulated Integer data blocks.

(Vulnerability 

ID) Integer 

Data Blocks

variable

Contains zero or more Integer data blocks 

containing vulnerability identification numbers. 

See 

 on page 244 for 

the data fields that appear in an Integer data 

block.

Vulnerability Reference Data Block Fields (Continued)

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

VLAN Block Type (14)

VLAN Block Length

VLAN ID

VLAN Type

VLAN Priority