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-2
votes
1answer
34 views

ISP broadband user Authentication

How does an ISP authenticate a broadband user via its radius server or any other methods. Will it would be possible for me to locate this server eg- packet capture,by halfbridge mode, ip tracert? Is ...
2
votes
0answers
22 views

Does HTTP/2 run over 3g even when there's deep packet Inspection being done by the operator against other protocols? [closed]

I'm building an app that is going to run on mobile devices which will connect exclusively over 2g or 3g, and I haven't found any answer to my question by Googling and looking in remote places of the ...
0
votes
0answers
29 views

Reading packets with Wireshark

How do I read packets captured with Wireshark. I was finally able to capture incoming and outgoing data in hopes of developing something along the lines of an IDS. Thanks in advance for the help. A ...
-1
votes
2answers
51 views

How are Internet connections differentiated from each other by an operating system?

Given this example, how would my operating system differentiate between each request. Let us say I have 3 tabs open, and at the same exact time, they all go to http://google.com. How would my ...
1
vote
0answers
56 views

Can we send and receive uTorrent packets through TOR?

I just started using pcapy python module to capture network packets. Is it possible to capture packets going out from uTorrent (on my own machine) with pcapy or scapy and sending them over the TOR ...
0
votes
1answer
416 views

Overlapping address error in Packet Tracer-Possible subnet error

I am working on my hands on final exam for Networking Fundamentals. I have accomplished everything except for putting the 4 devices on two separate subnets. These are my subnet calculations: Given ...
2
votes
0answers
100 views

Modify incoming packets before forwarding in Linux

I’m using a Linux (Debian based) system on which IP forwarding is enabled (/proc/sys/net/ipv4/ip_forward is set to 1). I can read the incoming packets using a raw sockets program, but I want to modify ...
0
votes
0answers
46 views

What is the right procedure to check where my packet loss comes from?

I installed a new ADSL line and on my desktop I'm using a WIFI usb pen to receive the signal from my modem (Netgear DGN2200v4). I took some speed tests and ping tests and I noticed that I have an ...
0
votes
0answers
270 views

Dropping packets in Windows 7 with SonicWall VPN but OK using Windows 8.1

I originally posted this over at SO but they suggested that I post it here instead, so I am reposting it here: I am having a problem with my network connection when using SonicWall VPN and I think ...
-1
votes
1answer
44 views

Modify a packet's content on DD-WRT

I need to modify incoming data to my network. Specifically, I want to modify all responses from a specific internet site so it doesn't show a certain HTML element. Is this possible with ...
0
votes
1answer
46 views

calculate time taken to reach from network A to B without ping and telnet

I want to find distance between A and B either in terms of network time or Hops count.I have few ideas like I can ping B from A will log down time taken to respond that ping request . Also If I know ...
0
votes
1answer
100 views

Is it possible to sniff packets on other subnetworks?

I've been reading about packet sniffing and was wondering if it's possible for someone to sniff packets on subnetworks other than the one they're on. Since the point of a subnetwork is that devices ...
0
votes
0answers
52 views

Does brctl have a log file?

Does brctl have a log file which records the operations done with brctl? I am not looking for a log file captures the packets flowing through the bridge. I am looking for a log file which captures ...
0
votes
2answers
214 views

What does a network packet consists of?

I know basic networking but I am not very good at it. Now I am calculating how many packets will be lost if I use UDP over IPv4. I can assume that the protocol overhead for data sent via UDP over IPv4 ...
2
votes
5answers
338 views

Trying to understand IP packet flow

So I'm having trouble understanding how packets travel from one machine to another. Below I've put in an example of Computer 1 trying to connect to Computer 2. Computer 1 IP: 192.168.1.11 Subnet: ...
0
votes
1answer
110 views

How to get packets for a specific access point

I have Wireshark and Aircrack-ng and whenever I capture packets I don't know how to capture packets for a specific network (the network is "2WIRE207"). I need to do this so I can use Aircrack-ng.
0
votes
0answers
241 views

CommView for Wifi stops responding after a few minutes

Whenever I am capturing packets for aircrack-ng, after around 5-10 minutes, it stops responding all of a sudden. I am running a Windows 8.1 Pro 32-bit PC. How can I fix this?
0
votes
1answer
240 views

cannot capture packets on wireshark without internet

I am using Wireshark on my Windows 8.1 Pro 32-bit pa and whenever I start Wireshark without internet, it can't capture ant packets. But when I am connected to the internet, it captures packets form ...
0
votes
1answer
104 views

OpenBSD: Prioritizing empty ACKs

There is a wildly used example concerning PF and prioritising empty ACK packets, so that an an asynchronous connections' downstream does not lose performance, if the upstream is clogged up. The ...
0
votes
3answers
1k views

Network Sniffer identifying strange requests to *.crdui.com

So I just downloaded a Network Sniffer on my local machine, as I think something is going on. As soon as I opened it, selected my network adapter (an LTE stick), it started showing me requests from ...
0
votes
1answer
407 views

Remote Packet Capture using Wireshark

Well The scenario is that I have a Windows machine(at home) and a Linux box running headless Ubuntu server(without GUI) on a remote location. I got Wireshark installed on my windows machine, and ...
0
votes
1answer
333 views

Iptables mark incoming packet - vpn routing

I have connected my home to my workplace for out of house backup reasons through OpenVPN. The connection is working nicely. At work I have 5 fixed IP addresses. Now I would like to assign one of ...
1
vote
1answer
410 views

TCP vs UDP. Sending data on a closed port

I try to understand differences between TCP and UDP packet on the error-checking. I know that UDP packets are connectionless and doesn't care that the packet will arrive the destination safely. And ...
1
vote
1answer
160 views

Why HTTP response is split in 2 parts: header and body?

I'm trying to understand why a single HTTP response is split in 2 parts in the following setup: Requested resource is protected by HTTP Digest Authentication on server side. Communication is ...
0
votes
1answer
40 views

How to learn the current network scheduler used in my linux machine?

How can I learn what network scheduler for packet selection is used in my linux system? Thanks!
0
votes
0answers
97 views

How to send packet on tor network to get back to my computer?

Can anyone tell me how to configure system (I think Linux is the best option for this) to be able to send packet by Tor Network back to my own computer? I have to conduct research on how it behaves (I ...
1
vote
1answer
3k views

What is most likely to cause this packet loss?

This question: Can a software cause a huge ping response is what made me realize that I have a network problem. As you can see here: C:\Users\*****>pathping google.com Tracing route to ...
0
votes
1answer
843 views

See file size on wireshark when downloading

Is there a way to see the filesize of a file when starting a download through wireshark? I want to see the size of http downloads on wireshark when i start them but i cant find that information.
1
vote
2answers
161 views

Layer 2 switching or Layer 3 forwarding?

I have a wireless router installed at my home (provided by ISP). Scenario: Router IP: 192.168.1.1 My Machine IP (X): 192.168.1.2 IP of machine Y: 192.168.1.3 Now when I ping Y from my ...
2
votes
1answer
832 views

Change TCP sequence numbers for packet replay?

First off, I'm using wireshark for capture and colasoft for replay. I'm attempting to replay a group of captured packets back, looped to be done several times over (the purpose of this is just to send ...
2
votes
2answers
712 views

Why cocoa packet analyzer shows “capture packets to a trace file” menu?

I am trying to use 'cocoa packet analyzer'('C.P.A'). I uses mac OSX and I installed this from appstore. After installed this, when I launch this program a popup comes out. Others say that to get ...
-1
votes
1answer
213 views

Is there a tool or website to generate DNS query packets for looking up the IP address of a hostname?

Is there a tool or web site where I can plug in some values and have it generate the bytes for a DNS query to look up the IP address of a hostname? Preferably one where it explains how the values ...
0
votes
0answers
1k views

Old Look@LAN software gives “No packet to read” log error; then won't ping

Yes, before anyone asks the question, I'm still using Look@LAN. It's the best free network discovery and resources program I've seen (but please, if you have suggestions for newer ones, let me know). ...
0
votes
1answer
327 views

what is the effect of using 'ping -m' (tagging the packets)

i was going through the man pages of ping and i found a -m option there.. so how does this effect my packets? its something like tagging the packets. ping 8.8.8.8 -m 2 ...
0
votes
3answers
204 views

my perl scripts that use Net:Pcap dont work when i port them onto a vm on my server

I am trying to run a perl script that i have scripted to dump the packets from my network, i am using the Net:Pcap and netpacket modules. They are working fine on my and my friend's laptop. but when ...
0
votes
1answer
590 views

How can i connect 2 PC with different subnets in 1 Switch in 1 Router

Well here is the problem...I want to connect 2 PC pc_1: 10.1.1.18/29 pc_2: 10.1.1.66/29 with 1 switch pc_1 -> Switch Fa0/1 pc_2 -> Switch Fa0/2 and this switch to a router ...
2
votes
1answer
178 views

How can I filter incoming packets to my application?

I have only little experience with Wireshark. The problem is that when my server (3rd party app) receives a faulty packets, it crashes. I would need to filter the incoming packets and filter out such ...
3
votes
1answer
468 views

Relation between a packet and a frame over the network

I am learning how networks work and I have a question. What is actually sent over the network? A packet/datagram or a frame? I believe it is a packet. If so, let's say Computer A wants to communicate ...
0
votes
1answer
271 views

Intercept and Edit Packets over a Network Bridge

I've been looking around for a way to intercept a packet as it comes into my main pc, edit it, and then let it continue it's journey to the device bridges though my pc. I've tried writing a c# app to ...
1
vote
2answers
1k views

TCP\IP Packet Signature - how to identify such data packets?

I know of a program that can "carve" (look for) TCP IP Packets from raw binary data. The results it presents are the source and destination MAC addresses, the source and destination IP addresses and a ...
1
vote
1answer
1k views

Jumbo Packet vs Transmit Buffers

I want to increase the transfer speed between two network adapters: 1) Atheros AR8152 PCI-E Fast Network Adapter. 2) Marvell Yukon 88E8053 PCI-E Gigabit Ethernet Controller. Marvell has a "Jumbo ...
0
votes
3answers
262 views

HTTP Packet inspection scripting

I have a HTTP application running on a server. I cannot modify the application, but I would like to trigger an event when a specific POST request is sent to the application. I would like to run a ...
2
votes
2answers
2k views

FFMPEG Errors: “max_analyze_duration” “buffer underflow” “packet too large” What to do?

I have an error while just copying a video with ffmpeg. I use the command: ffmpeg -i leon.mpg -vcodec copy -acodec copy leon2.mpg The errors: [mpeg @ 00000000020ebd20] max_analyze_duration 5000000 ...
0
votes
1answer
60 views

How to transfer packets from ethernet card to another ethernet card

I have a desktop with two ethernet(etho,eth1) cards and OSSIM installed in it. I have a laptop with webmin installed, where i want to write rules for transferring packets from eth1 to eth0. Both the ...
2
votes
2answers
6k views

Are Segments, Packets and Frames the same size if we ignore headers?

I've looked for some explanation about the differences between Segments, Packets and Frames, and from what I read: Segment is the original data + Transport Layer header. Packet is a Segment + ...
0
votes
1answer
134 views

Track down internet PCs communication using network media devices? [closed]

We are having a little argument here about whether there is a way for internet providers to trace your traffic using the network media devices they are using. Some of the folks say that if you are ...
2
votes
0answers
1k views

Drivers for packet injection on the Intel Centrino(R) Advanced N 6205

I have an Intel Centrino(R) Advanced N 6205, running BackTrack 5 in VMWare. I'm having trouble following the tutorial on aircrack-ng website, and I need to know what drivers to download to support ...
0
votes
1answer
506 views

Check how many packets are being received by each interface/computer on the network

Is there a way I can check via terminal or command line how many packets are being received by each interface/computer on the network? I want to check which PC is downloading a large amount of data. ...
2
votes
1answer
496 views

How do I know if my packet requests are being redirected from localhost?

So I just had a fun and exciting time trying to figure why on earth a particular computer was able to ping different places on the interweb but not browse any webpages of the same places I was able to ...
0
votes
1answer
1k views

How do I send TCP packets with packETH?

I want to send packets to 127.0.0.1:11311 with packETH. However, there are some problems I cannot solve. Here's some screenshots: (click to zoom in) In IPv4 data ("Header length") Header ...