Expiring Today—Celebrate National IT Professionals Day with 3 months of free Premium Membership. Use Code ITDAY17

x
?
Solved

tcp packet scanner

Posted on 2012-03-29
1
Medium Priority
?
511 Views
Last Modified: 2012-03-30
Hi

I am creating a kern module that scans the network and displays packet information

I want to display the remote port numbers, however i can only find how to display local port numbers (tcphdr->dest and tcphdr->source) Can anyone help?

also how can i display the packet data in hex?
0
Comment
Question by:codey-06
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
1 Comment
 
LVL 53

Accepted Solution

by:
Infinity08 earned 2000 total points
ID: 37785966
>> however i can only find how to display local port numbers (tcphdr->dest and tcphdr->source)

One of these is the local port, and the other is the remote port. Which is which depends on the direction the packet travelled.


>> also how can i display the packet data in hex?

The data can be found immediately after the TCP header. Just skip the appropriate amount of bytes (using tcphdr->doff), and display the data found there in hex.
0

Featured Post

Building an interactive eFuture classroom

Watch and learn how ATEN provided a total control system solution including seamless switching matrix switch, HDBaseT extenders, PDU, lighting control to build an interactive eFuture classroom.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

In this post we will learn how to make Android Gesture Tutorial and give different functionality whenever a user Touch or Scroll android screen.
Today, the web development industry is booming, and many people consider it to be their vocation. The question you may be asking yourself is – how do I become a web developer?
In this seventh video of the Xpdf series, we discuss and demonstrate the PDFfonts utility, which lists all the fonts used in a PDF file. It does this via a command line interface, making it suitable for use in programs, scripts, batch files — any pl…
Starting up a Project

718 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question