0
votes
0answers
62 views

How do I drop a TCP packet matching a certain signature on windows (e.g. firewall-based)?

I am searching for a way to stop a TCP packet with a certain signature and connection from reaching an application. The packet may be dropped completely. The packet contains the byte signature [42, ...
0
votes
0answers
205 views

What exactly TCPIP parameter StrictTimeWaitSeqCheck does?

From http://technet.microsoft.com/en-us/library/cc722796.aspx: This value indicates that a socket should not be reused before the time specified by TcpTimedWaitDelay passes. So, if it is 0, ...
0
votes
0answers
37 views

I think that someone else is entering my computer for long, sth like back orifice. I then got TCPView. Now, what do I do?

I got some variations of the name of my own computer going on in TCPView, for instance. I wonder whether that means another computer, like in one instance the name appears in capital letters, in ...
0
votes
1answer
38 views

Filter outgoing connections but allow incoming

I a computer on my local network that I want to have accessible from any computer on the local network as well as from the internet, but I don't want it to be able to connect to other computers. I ...
1
vote
3answers
969 views

Network Traffic per process/application windows

I know that there are plenty of applications to do this (like procexplorer) but is there anyway to access the winapi (what method/reference is used) to retrieve the network traffic (TCP, UDP, etc) per ...
2
votes
1answer
322 views

How to intentionally delay TCP packets in one direction

I've looked at this already: How to deliberately introduce a delay for incoming UDP packets I am testing a server-client system, and need to delay messages from the server to the client by some ...
3
votes
3answers
2k views

How to pipe data over tcp from the command line?

I would like to pipe data from one machine in the command line to another machine over tcp. I guess I could write a socket server but this must already be implemented. For example I could use it to xz ...
1
vote
1answer
583 views

Is it possible for a PC to use two net connections simultaneously?

We have two net connections in our office - a 10mb Wired DSL provider and a 3mb Wireless backup provider. The wireless is a backup, but it has the advantage of 3mb upload speeds whereas the wired is ...
1
vote
0answers
185 views

Artificial network delay tcp/udp (bigger ping) for defined application? (windows)

I have a game where people can easy detect who i am looking at my ping, i want to make my ping highter. How can i set network delay for all network connections for defined application?
3
votes
1answer
201 views

How do I prevent connection resets upon pulling the ethernet cable?

In Windows, when you pull out (trip over it) a network cable, then the connections get reset. If you do the same on a Linux box or if you put a switch between PC and router and then pull the cable ...
0
votes
1answer
366 views

stopped a service but outgoing port still exists on netstat -aon

bit more detail.... I have a port, specifically port 2869 for Windows Media Player Network Sharing Service that uses UPnP port 2869, however even when turning off all the sharing possibilities I can ...
2
votes
0answers
56 views

Most network protocols occasionally fail

My Windows 7/64 machine has suddenly started to act funny. Everything will be running fine, when suddenly most network access methods will fail. These things continue to work: Accessing network ...
1
vote
1answer
581 views

ARP: 'Who has' broadcast resulting in TCP segment losses

I have an issue with a simple TCP connection between two PCs (both Windows XP SP3) connected by direct wire to each other. These PCs have IP address 10.10.10.1 (server) and 10.10.10.2 on the network ...
0
votes
1answer
460 views

In TCPView, what does the * mean in the Remote Address field

In TCPView what does the * mean in the remote address field.
5
votes
1answer
2k views

In TCPView, why does the svchost.exe process need to listen on so many TCP and UDP ports

Looking at TCPView I can see over 25 svchost processes using TCP and UDP ports. If these svchost processes are the various services required by Windows, then why would so many be using the network?
1
vote
0answers
334 views

Can not open port 6000 windows xp

I am trying to connect to macincloud using their software and can not. They told me the reason is port 6000 is not open. I spent 3 hours on the phone today with ATT making sure the 6000 port was open ...
6
votes
4answers
39k views

Open a test TCP connection to a specified IP/Port

I'm looking for a tool that works across windows (xp through 7) that will allow me to open a TCP connection to a specified ip and port. This functionality used to exist in windows xp (netsh diag ...
0
votes
1answer
11k views

How to delete binded port from cmd in Windows 7?

How to delete binded port in Windows 7 from cmd? I'm developing client server application which running on the port 3434 and also is binded on port 0.0.0.0. When I type in cmd netstat -an, I get this ...
5
votes
1answer
361 views

Does TCP/UDP send file sequentially or randomnly?

Does TCP/UDP protocol always send or receive file packets sequentially? Would it possible to make a choice which data packets will be sent first using sockets API?
0
votes
2answers
966 views

Why can't a PC with 2 network cards be accessed by hostname?

I set up PC with 2 network cards, connected to the same LAN. I can connect to this PC (e.g. by remote desktop) only via IP addresses. Accessing by hostname does not work. Why is this the case? ...
1
vote
1answer
5k views

Windows 7 firewall causing remote connection to time out; should refuse connection

The Windows 7 Firewall is running with default options to allow outbound connections and block incoming connections. I have a process trying to connect regularly from within my local network, which is ...
10
votes
2answers
4k views

On the Performance of TCP implementations of Linux and Windows

As I understand the implementation of TCP stack in windows and Linux are different. Windows uses a congestion control algorithm known as the TCP Reno while Linux uses Cubic. How do the 2 protocols ...
3
votes
1answer
777 views

Where do I find the TCP/IP stack in Process Explorer on Windows 7?

I was wondering, if the TCP/IP stack is part of the kernel or running as a service? Where do I find the TCP/IP stack in sysinternals ProcExp?
0
votes
0answers
85 views

Mysterious packet loss

Sender station: Receiver station: The two computers are directly connected one to another without any switch or router. Netstat gives no clue what is happening. Amount of received packets is ...
0
votes
2answers
412 views

Any free program for binary TCP communication?

I have a TCP server listening on a localhost's port so I need a software that can be used to establish a TCP connection to the server and then send binary data, not ASCII. For example, I want to send ...
0
votes
1answer
189 views

Software using Socket Based TCP connection cannot connect to server

On my computer other network based software are able to connect to servers and I am able to surf the internet as well on this computer however there is a software that uses socket based tcp connection ...
23
votes
12answers
46k views

How do I kill a process that is dead but listening?

I'm developing an app that listens on port 3000. Apparently there's an instance of it still listening to the port because whenever I start it, it can't create a listener (C#, TcpListener, but that's ...
0
votes
1answer
225 views

How to know which protocol is used in data transfer and inspect that data?

I've a .net application for windows. This application transfers a lot of data to and from a particular server on a fix port no 8888. I tried 'Tcpview' but couldn't figure out anything useful. I only ...