[packet] Forum Topics

Hello everyone! I have a server/client application running in 4 internet cafes, and i have a packet duplication problem in one of them. I have thoroughly examined my code and tested it in my lab and cannot find any bugs whatsoever. So on rare conditions some of the clients seems …

hi guys, i'm currently working on a project wherein i would enter a router's configuration using vb i've tried it on my netgear router by calling putty using vb and manually typing the commands on the console what i want to know is, if i'm using a software like packet …

hi,i am using hathway cable broadband connection without any external modem or router. my net stopped working suddenly,the cable when connected to a friends laptop works fine. in my system, the packets on local area connection is sent automatically even when not connected. but when i connect, its same and …

please any one can help me about send and recieve packets by serail port the pakeck that i need to send is in hex to controll some thing how can do this in vb.net how can do like this design in the picture below please help me

**edit** I just realized that Im on a single core machine atm (stupid work machine), so theortically the server isint actually executing on the CPU 50% of the time (while the client is running), so packets would be lost right? Or is there something else im missing alltogether? Ill post …

how ca send the packet using button send to the serail port i recieved the packet but how send this packect through the serail port thanks for your reply the code is Imports System Imports System.ComponentModel Imports System.Threading Imports System.IO.Ports Public Class frmMain Dim myPort As Array 'COM Ports detected …

I posted this somewhere else but I think it was deleted so I'll post it as a new question... Here's my problem; I've been developing a packet sniffer using the Jpcap library from http://netresearch.ics.uci.edu/ . I was developing using the windows version of the java library, but now I realize …

I'm trying to develop a packet sniffer using java and I've been using the JpCap library to capture the packets. I've run into a problem where Jpcap is capturing the packets from the NIC on my desktop, but I need to capture the packets from the gateway (MikroTik RouterBOARD) and …

I'm required to write a packet sniffer in the C programming language and Identify the Packet as IP, ARP, or Broadcast and count how many packets of each. I'm able to get IP packets identified and counted, but don't seem to be seeing any ARP or Broadcasts correctly or count …

Hello guys i'm currently having difficulties with pinging different vlans whether they are on the same switch or not. I have 3 vlans: vlan 30, vlan 40, vlan 50. I have 1 switch which I use as the VTP server and 7 switches connected to it which I use as …

Hello , i built a network topology on packet tracer a while ago using a computer that is not mine. i saved the file and now when i open it on my computer i can't see the commands that i have entered before. is there a way to show these …

I am testing wireshark for learning purposes. I wanted to try out a tutorial that hacks a facebook account stealing cookie information. I couldn't manage to hack my facebook account because wireshark is sending me truncated packets that I can't get cookie info out of. **This topography of the network**: …

**Before you start complaining that this has been asked before, please hear me out** Hello, I've been trying to write an simple application for windows that can send and recieve packetts over a network. I'm hoping to find some simple library that can simply open the port, and send a …

I want to create a message table, where every incoming message is saved as a row in a message. According to the picture below. Any introductory help will be very helpful. I already have á application where the messages are printed on a textarea, but for further inhancment I want …

How would I be able to get all incoming packets, in C#? I have absolutely no idea on how to get started, so could you guys help me out? Thanks.

Question is: [B]How can I send two strings using SendData in different packets?[/B] Because when I try to send two strings one after another, winsock joins them in a single packet thus making one string received from client/server. For example: [CODE]Winsock1.SendData "String1" Winsock1.SendData "String2"[/CODE] The final received data will be: …

Hi All, I have a problem on one of my site where I have Quintum VOIP gateways in 2 separate buildings that are connected with a Fiber link. When running the ping command I loose packets to the Quintums but not to PC's. Today their Exchange server went down and …

Hi All, I'm having a bit of a problem with a service I'm developing. I have a CGI script sitting on my server (Ubuntu 10.0.4) which obviously receives it's requests on port 80, and the incoming requests arrive on port 8083 which is out of my control. So I have …

Hey guys I am a noob when it comes to this stuff. I go to college for electrical engineering and me and my professor were discussing a cool senior project. There are regular vending machines in most buildings of the school that are connected to the schools network. The ethernet …

I am a beginner in Jpcap. My problem is as follows:- i am trying to send a TCP packet but unable to receive it. The code for sending Tcp packet is as follows. I am working on Windows XP. hoping for reply. [CODE]//code for sending import jpcap.*; import jpcap.packet.*; import …

[B]I am doing a mini project on traffic redundancy elimination methods as my mini project...i want to know how to monitor and find repetitive http requests traverse through a pc acting as aproxy server (eg: like a no: of laptops connected to a single lap acting as a proxy server) …

Ok this is so new to me but does anyone have example code that decodes header fields in an IP datagram? or a link to something like the beej's guide....So i need to decode the header from the following example. 0000000 141724 120662 000002 000004 000000 000000 000000 000000 0000020 …

I have a confusion about where the data packet goes if its not sent to any computer on the network.Is is sent back or is it absorbed by the terminator?

Hello everyone, I'm having trouble with a code I need to write, I have never coded in C and I need to do this program in C. I have created my checksum code already and need to implement this: I need to send a complete ASCII file in 128 byte …

does someone know a code in c that will send a complete ASCII file in 128 byte packets to another file? So The sender takes the ASCII file as input and sends a 128 byte packet on the data queue

There is a good tool for pcap base protocol testing. You can modify the pcap by using this tool. [URL="http://www.packetsquare.com"]http://www.packetsquare.com[/URL] packetsquare is a open-source packet modification tool. It is used for protocol testing and hacking. This tool is capable to parse and modify Ethernet II, VLAN(802.1Q), MPLS, ARP, IPv4, ICMP, …

Hello everybody! I have a game server (WoW). I want my players to download my custom patches to the game. I've done a program that checks for update/downloading things. I want my program to send a packet to my game server if player have all my patches. I dont need …

Hello, I have to take a snapshot of my screen and send the image to a client using Datagrams. I think my problem is at the client part. The image is null, and I don't know why. Here is the server part. I tried to send 534 byte packets (bigger …

Call it a kind of bigotry for the new millennium. The packets of peer-to-peer applications such as BitTorrent have become the target of throttling—even complete blockage—by Internet service providers on their networks. Do they have the right? The revelation comes from [URL=http://broadband.mpi-sws.mpg.de/transparency/results/]study results [/URL] published yesterday by Germany’s [URL=http://www.mpi-sws.org/]Max Plunk …

Bram Cohen, the creator of bittorrent.com has signed a deal with the Movie Industry, that is hoped will reduce the number of pirated films, shared on the Internet, via the website. The deal means that BitTorrent must remove any links to pirated films. The deal between the Motion Picture Association …