0
votes
0answers
13 views

TCP windows scaling in Windows 7 works only alternate times

I am running iperf TCP client in loop from another program. I am getting high and low throughput alternate times. I also tried to use fresh installed Win 7. This behaviour is not seen in Win XP and ...
1
vote
0answers
58 views

Windows 7 / PuTTY drop IPv6 TCP connections on brief outages

This is an IPv6-version of the following question: Why Windows 7 / PuTTY drop TCP connections even on very brief outages? After moving from IPv4 to IPv6, I've noticed that my IPv6 connections would ...
0
votes
0answers
312 views

Network issues, resolving host

My network connection randomly drops for a 5 minutes or so when I'm online. It always happens when I boot up my computer. I can tell because it says:resolving host in Chrome and I can't ping any ...
0
votes
0answers
65 views

What changes to my network settings in Windows 7 can I make to achieve lower latency for gaming?

What changes to my network settings in Windows 7 can I make to achieve lower latency for gaming? I have heard of changing TCP settings in the registry, but I have also heard conflicting information on ...
0
votes
0answers
39 views

Does Windows 7 still require the tunage of the TCP Buffer sizes?

I'm getting very slow single-stream downloads on a 1Gbps connection when using some ssh-based app (about 1MB/s or so) over a 100ms latency link. Is this related to some bug in the app, or would ...
0
votes
1answer
29 views

Program running from a folder where a parent folder is not accessible wont be able to use tcp layer

This issue is one that has taken me and our IT department at our company many hours to pinpoint. The problem only appears on Windows server 2008, windows 7 and windows 8. On Windows XP or Windows ...
0
votes
0answers
36 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
0answers
181 views

Firewall is blocking echo request on port 7 (TCP)

I have an app which needs to receive a message back from the server. With the firewall on, I do not get the message back. If I turn off the firewall I get the request back. I have added some rules ...
0
votes
3answers
616 views

Open TCP port in Windows 7 and read incoming data, what program to use?

I have an external device which can connect over GPRS to the Internet using a SIM card and I want to see what data it sends. I can program it to use my computer as a server and then use a program to ...
0
votes
1answer
473 views

Ports 1935 and 843 are getting blocked for no reason

I have Windows 7, and my computer has been blocking ports 1935 and 843 for no reason for a while now. If for example, I try to watch twitch, nothing will work because those two are getting blocked. ...
5
votes
1answer
229 views

What type of TCP connections are counted?

In Windows 7's Resource Monitor, in the TCP Connections graph at the top right -- how are those connections being counted? Does a "listening" state count, for example? Does it matter what state a ...
0
votes
1answer
665 views

MTU, RWIN, and MSS

I have been doing some reading into TCP Receive Window (RWIN), Maximum Segment Size (MSS) and Maximum Transmission Unit (MTU). Right off the bat I have some questions and I need a power user's help! ...
3
votes
0answers
170 views

Samba not connectable “Go away, we're not home”

I'm having an issue connecting to my dedicated server using samba. The server is a debian (squeeze) box running a samba server, only small modifications have been made to the default config and the ...
6
votes
1answer
2k views

Why Windows 7 / PuTTY drop TCP connections even on very brief outages?

I have a small local network that piggybacks on a captive WiFi, and I use ssh on OS X with -oServerAliveInterval=240 and PuTTY 0.62 on Windows 7 Professional for establishing connections to my Linode, ...
0
votes
1answer
175 views

How can I remap outgoing TCP ports?

Is there any way to remap a TCP port from a program were you not can change the port number? The program talks on port 4321 and I want it to go out on port 14321 on the local computer.
2
votes
2answers
236 views

Program that blocks all TCP connections [closed]

Is there a program for Windows 7 that blocks all TCP connections, and ask for permission to use a new IP, then remembers? I cannot find anything like this and firewalls don't block every single IP .
0
votes
1answer
198 views

Why some PC's look at PSH flag and some not?

On Stack overflow I asked a question about programming around TCP and reading the contents of the TCP stream and now I just found the solution of it. Namely the PSH flag of TCP headers that needs to ...
1
vote
1answer
2k views

How can I disable TCP window scaling?

I had previously been using Ubuntu 11.10 and recently, Ubuntu 12.04. However, due to a stupid mistake on my part, I was forced to reinstall Windows 7. One of a multitude of problems is that my ...
1
vote
1answer
1k views

Downloads stops - “TCP Window Full”

During the last weeks I encounter a lot of download problems of all programs that are based on Java (Eclipse, Maven, Android SDK manager, ...). The download starts and runs fine until suddenly it ...
1
vote
2answers
279 views

Download resume support blocked by isp?

Can ISP block resume support for downloads ? I'm using IDM (internet download manager) to download of the internet from resume supported websites, yet I am unable to resume downloads. I tried ...
0
votes
1answer
80 views

Video player that can be controlled by Socket / TCP

Is there a Video Player that can be controlled with TCP? I think VLC supports this - but I can't find any easy to follow instructions on how to do this. I will be using this on a windows 7 machine, ...
1
vote
1answer
4k 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 ...
3
votes
1answer
675 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?
1
vote
1answer
8k views

How to change TCP “time wait” delay in Windows 7 / 2008 Server?

Windows Server 2003 "offers two methods of controlling TIME-WAIT behavior." The TcpTimedWaitDelay registry value under the HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters ...
4
votes
3answers
3k views

How to use DNS over TCP?

Google DNS (8.8.8.8 and 8.8.4.4) are blocked (or polluted) by all ISPs available to me (and DNS by ISPs just return wrong answers for some sensitive sites!!), and it is said that if we change DNS from ...
2
votes
5answers
21k views

Inbound TCP connection limit in Windows 7

I've done a bit of searching on the internet trying to find out whether there is an INBOUND TCP connection limit on Windows 7. We're writing a server product which processes data from a number of ...
1
vote
0answers
348 views

HP G61 Notebook: TCP seems to be dead

Can't say I'm much of a Windows expert, but this is somewhat of a weird occurence. I'm in front of a HP G61 Notebook laptop with Win7 that has connectivity problems. I mean that it's connected to the ...
17
votes
5answers
42k views

What does “On-link” mean on the result of “route print” command?

I'm using Windows 7. When I type "route print" under command prompt, I get a IPv4 Route Table with several "On-link" values under the Gateway column. For example, like this one: IPv4 Route Table ...
4
votes
1answer
8k views

Is there a half-open TCP connection limit in Win 7?

Or at least, is it a low limit like 10 or 50? It was present since XP SP2 (I think), and was finally cancelled (= I think now the user can set the limit manually) in Vista SP2. What is the current ...