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0 votes
1 answer
765 views

Windows 7 stops responding to TCP request after random time

Welcome everyone I'm looking for some tips (perfectly a solution :)) to a problem we are facing for a long time now. Basically: we have a client application which sits on a Windows Server 2012 and a ...
jak tek's user avatar
0 votes
0 answers
9k views

How to analyze the source of TCP Retransmissions

I am requesting a URL (so the following happens with a HTTP GET request) from Firefox 50.0.2 and I'm using the auto refresh feature with a 1 second timeout. I'm observing TCP retransmissions like this:...
Thomas Weller's user avatar
1 vote
0 answers
66 views

Issues running File replication pro service

My management server and replication server are both on the same LAN, both have windows 7. No firewalls in between Windows firewall is also disabled on both machines. File replication pro uses port ...
Sam03's user avatar
  • 11
1 vote
1 answer
831 views

Windows 7 pc opening port 139 from random IP addresses

When I run CurrPorts (a TCP monitoring tool for nirsoft) I get the expected output plus entries that I do not understand. My LAN is 192.168.1.x. My pc is set to a static IP of 192.168.1.12. But I find ...
aquagremlin's user avatar
4 votes
2 answers
4k views

What TCP / network tuning should be performed in Windows 7 for best internet performance without reasonable risk of causing issues?

I'm wondering what network / tcp tuning should be done in Windows 7 to ensure best performance (yet without reasonable risk of causing issues). Here's what I have so far (the below commands get run ...
sa289's user avatar
  • 343
1 vote
1 answer
593 views

Accessing two devices with the same IP?

I want to connect my laptop to two WiFi enabled digital cameras, that have the same IP hardcoded: 192.168.1.1 One solution that I've successfully tried: Connect one device to the laptop's built in ...
feklee's user avatar
  • 1,664
0 votes
1 answer
434 views

Create local TCP connection from C program in Ubuntu VM to Labview in Windows (Host)

Sorry if this is lengthy, I'll try to keep it as concise as possible. I have made a C program which runs in Ubuntu in a virtual machine and a Labview program running in windows (the host of the VM) ...
timeshift117's user avatar
9 votes
1 answer
86k views

How to send data to tcp server from command prompt [closed]

I am a java developer and quite aware of socket programming in java.I have a tcp server running my localmachine.I can write java codes for client and check communication between server and client.But ...
SpringLearner's user avatar
1 vote
0 answers
243 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 ...
cnst's user avatar
  • 2,475
1 vote
0 answers
4k 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 ...
user266237's user avatar
1 vote
3 answers
10k 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 ...
MerNion's user avatar
  • 25
0 votes
1 answer
2k 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. ...
Joe's user avatar
  • 113
6 votes
1 answer
1k 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 ...
Coldblackice's user avatar
  • 5,994
0 votes
1 answer
4k 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! ...
44800erpp's user avatar
  • 293
1 vote
2 answers
615 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 ...
John Doe's user avatar