TCP Table

Overview

Evidence: Tcp Table Description: Collect Tcp Table Category: Network Platform: Linux Short Name: tcptable Is Parsed: Yes Sent to Investigation Hub: Yes Collect File(s): No

Background

Linux TCP table provides information about active TCP connections and network sockets. This data is essential for understanding network connectivity and detecting unauthorized network connections.

Data Collected

This collector gathers structured data about tcp table.

Tcp Table Data

Field	Description	Example
ID	Primary key (auto-increment)	1
Inode	Socket inode number	12345
ProcessId	Process ID using the socket	1234
UserId	User ID of the process	1000
LocalIP	Local IP address	0.0.0.0
LocalPort	Local port number	22
RemoteIP	Remote IP address	192.168.1.100
RemotePort	Remote port number	45678
State	Connection state	ESTABLISHED

Collection Method

This collector parses the necessary data from the tcp_table table.

This collector collects files from the following locations:

• /proc/net/tcp

• /proc/net/tcp6

Usage

This evidence is crucial for forensic investigations as it provides TCP connection information. It helps investigators understand network connectivity, detect unauthorized connections, and investigate network-based attacks. The data can reveal active connections, network sockets, and potential network vulnerabilities. Analysts can use this information to identify network compromises, trace network activities, and assess network security posture.

Notes

This data may contain sensitive information that should be handled according to data protection requirements. Ensure proper chain of custody is maintained during collection and analysis.