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I use Wireshark to capture packets.<br />
&nbsp;<a href="https://www.wireshark.org/docs/wsug_html_chunked/ChCapCaptureFilterSection.html" rel="ugc">https://www.wireshark.org/docs/wsug_html_chunked/ChCapCaptureFilterSection.html</a>
</div>


I use Wireshark to capture packets.
 https://www.wireshark.org/docs/wsug_html_chunked/ChCapCaptureFilterSection.html [https://www.wireshark.org/docs/wsug_html_chunked/ChCapCaptureFilterSection.html]

<div>
The IP packet will not contain any subnet info.
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The IP packet will not contain any subnet info.

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<div class="content wysiwyg-content">
Hi Experts, <br />
<br />
I need to find the subnet of the src host from packet. Is there any fields i should be looking at to find that information in a packet. <br />
<br />
Thank you
</div>
</div>


Hi Experts, 

I need to find the subnet of the src host from packet. Is there any fields i should be looking at to find that information in a packet. 

Thank you

How to find subnet information of the src host from packet?

Networking is the process of connecting computing devices, peripherals and terminals together through a system that uses wiring, cabling or radio waves that enable their users to communicate, share information and interact over distances. Often associated are issues regarding operating systems, hardware and equipment, cloud and virtual networking, protocols, architecture, storage and management.

Networking

Networking software modules are interfaced with a framework implemented on the machine's operating system that implements the networking functionality of the operating system. The best known frameworks are the TCP/IP model and the OSI model. Systems typically do not use a single protocol to handle a transmission. Instead they use a set of cooperating protocols, sometimes called a protocol family or protocol suite.[9] Some of the best known protocol suites include: IPX/SPX, X.25, AX.25, AppleTalk and TCP/IP. Other protocols indirectly related to networking include the hypertext transfer protocol (HTTP) and its related technologies, Dynamic Host Configuration Protocol (DHCP), Domain Name Server (DNS) and other Internet protocols.

Networking Protocols

Network analysis is the process of identifying and remediating the processes and systems within a network, including performance, connectivity and security. The process is performed through the use of tools developed for monitoring and analyzing network activity. Network problems that involve finding an optimal way of doing something are studied under the name combinatorial optimization. Examples include network flow, shortest path problem, transport problem, transshipment problem, location problem, matching problem, assignment problem, packing problem, routing problem, Critical Path Analysis and PERT (Program Evaluation & Review Technique).

Network Analysis

Network Operations includes asset management, help-desk supervision, security and user policies, infrastructure administration and anything else that affects the operation of your network. Discussions will include those of best practices in platforms, configurations, performance, security and accounting.

Network Operations

Network Management involves issues that are independent of specific hardware or software, including email policies, upgrade planning, backup scheduling and working with managed service providers for Desktop-As-A-Service (DaaS), Software-As-A-Service (SaaS) and the like through the use of tools, coupled with manufacturer standards, best practice guidelines, policies and procedures plus all other relevant documentation. Network management also includes monitoring, alerting and reporting, management reporting, planning for device or service updates, the backup of configurations, the setting of key performance indicators and measures (KPIs/KPMs), associated service level agreements and problem records as part of the IT Service Management (ITSM) framework.