A network interface controller (also known as a network interface card, network adapter, LAN adapter and by similar terms) is a computer hardware component that connects a computer to a computer network.

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Windows 7 computer randomly loses IP configuration

Title says it all. I recently got a new computer with Windows 7 and it randomly loses its IP configuration. Its IP configuration is all valid and works properly after it boots, but it can randomly ...
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28 views

Optimal setting for advanced parameters for Realtek PCI-e GBE family network card

superusers. I am trying to get the best possible setting for my Realtek PCI-e GBE family controller network card so that when it will be literally minimal or zero lag when playing online game. ...
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How to identify which USB devices are mapped to what network interface names?

When I plug in an USB network, it gets assigned a network name, like wlan1 by udev. Is there a way how to determine the mapping, without going through udev files, like ...
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11 views

How to discover current modulation used by my wi-fi adapter on Windows

I would like to know which modulation of signal (16QAM, QPSK, etc..) is my wi-fi network adapter current using in Windows Is there a way to discovery it in Windows natively, or should I use a ...
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Is there a way to make a usb NIC show up in the wifi dropdown on a Macbook Pro 15?

I purchased a USB NIC (Alfa AWUS036AC) because the onboard NIC on my 2014 MBP 15 and my Netgear router don't play nice with each other. Is there a way I can make the networks it (the new NIC) sees ...
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39 views

Intel WLAN NIC works in Linux, undetected in Windows 7

Note: I do not have the hardware in question in front of me at the moment, so I'm sorry for the unavailability of some information. I understand if I can't get a proper answer because of that. ...
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43 views

Internet access without NIC card?

If have a USB modem dongle for INTERNET connection. Can i access INTERNET from a brand new desktop/laptop without NIC card using this dongle? I feel that the dongle is just a modem ( with a DHCP ...
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152 views

brand new hp pavilion 500 has very weak wifi signal

So i just bought a new Desktop computer : Specs : Model: HP 500-280ef Cpu : intel i7 4770,3.8ghz,8mo cache GPU : nVidia 750 2Gb DDR5 RAM : 8Gb Os : win 8.1 Wireless ...
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Wi-Fi doesn't look up for networks automatically - W7

I think it may be a registry problem, ever since I uninstalled tunngle and a microsoft wifi miniport adapter, my TP Link usb adapter would not connect at startup unless I clicked the wifi icon at ...
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93 views

dell latitude e6540 e port plus ii network adapter not working

I own a Dell latitude e6540 and a E-port plus IIdell latitude e6540 e port plus ii network adapter does not work. What is happening is that, the network adapter for the port replicator is not working. ...
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29 views

How to optimize LAN connection between two home computers

I'm trying to figure out how to optimize the connection between my home computers. Both have Intel CT Gigabit PCI-e network adapters using Jumbo packets, etc (both PCs are setup the same). I'm using ...
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57 views

netperf udp with small packets on 10g link is bounded by ksoftirqd

I want to fill a 10Gbps link with very small udp packets (64B). I use the following command for i in 1 2 3 4 5 6 7 8; do netperf -H 192.168.56.2 -p 12865 -t UDP_STREAM -l 60 -C -c -- -m 64 -s 16M ...
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11 views

vSphere Directpath NIC isolation

I am building an home server, and I am planning to use VMWare vSphere to create multiple OS that will have precise tasks on the server. On the server, I'd like to have a firewall-antivirus using ...
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73 views

(Too) Many network adapters, why?

As shown in the image, I have VMware and Juniper Network installed, but there are still too many TAP-Windows Adapter or TAP-Win32 Adapter. What are these connections? How can I remove these?
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30 views

Using iw to decrease the txpower of a wireless nic

Any search on the internet reveals only how to increase your tx power, and only by changing your region. What I want to do is programmatically decrease (and increase) the tx power of my card but using ...
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31 views

Is there a way in windows to force/encourage a program to use a specific NIC (not as a developer)

I have multiple network cards, and can use more than one of them to connect to the internet. It is simple to force connections to a specific target IP to go through a specific NIC, using the route ...
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125 views

Problems external pinging second interface on two NIC two subnet Windows 7

I have this configuration working fine with Linux, but Windows puts up a nasty fight. The Windows 7 box is setup with two NICs, each for a separate subnet. NIC 1 is the primary interface and has ...
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1answer
65 views

How to route traffic from NIC1 to NIC2 when both NIC's are in different subnets?

I am implementing anycast ip on multiple servers which have 2 NIC's installed NIC 1 is connected to the production LAN with a subnet and a Default Gateway (automatic registration in DNS enabled for ...
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55 views

Windws - DNS for two NICs - one with hosted network

Hi I have a PC that runs a small web app (wamp based) and invites the user to take it's smartphone to use it. For that we use 2 wireless connections; - built-in: The wifi card with windows 'wireless ...
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1answer
34 views

NIC Remains Active After shutdown

Windows 8.1 during shutdown the ethernet adapter light goes out but comes back on after a second. Power is off but the adapter light is on and there is link activity. This does not happen in sleep ...
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30 views

Filter for Wireshark to show amount of downloaded data from a specific host

Need to check amount of downloaded data from some address when there are connection issues. Such issues are emulated with clumsy (http://jagt.github.io/clumsy/index.html). All packets that are ...
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Intel 10Gbps card bandwidth

I have an Intel 10Gbps card that has the 82599 10GbE Controller. The card has two ports in it. The datasheet of the controller says it supports PCIe 2.0 (2.5 GT/s or 5.0 GT/s) Now, according to PCIe ...
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Can one program use one NIC and another another NIC? [duplicate]

My laptop (Win7) have two NIC (one wifi integrated and one wifi dongle). It is connected to two different networks. Can I set for example uTorrent to download/upload over one NIC, and all others ...
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142 views

How to configre network card on centos?

I have a fresh install of Centos on a machine with two NICs, one built-in and another one installed in PCI slot. However in the network settings I get one shown as wired connection picking up IP from ...
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36 views

OpenVPN TAP binding order issue

I am running a 64bit Windows 7/8 AD environment using OpenVPN on remote computers to access our network/servers in our main office. Typically, once we install OpenVPN on a new machine and configure ...
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102 views

Single external antenna on multi-antenna WiFi n-enabled network card

I want to buy a PCI WiFi card, that supports networks in n standard (TP-LINK TL-WN851ND). It has two antennas, and it supports MIMO feature (yet I don't know if it's the standard one, or propertiary). ...
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windows hosted networok on windows 8

my sister is using Acer laptop, that has an intel WLAN card and supports windows hosted network(checked in command prompt).Am using the basic way using netsh wlan command also, then am using netsh ...
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42 views

definitively determine the primary physical LAN port (device0)

Is the device with the lowest DeviceID a reliable way to find the first LAN port on a machine with 2 ports? I have been searching for a way to deterministically get the first LAN port across our ...
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59 views

Juniper Network Connect couldn't connect to server

I've been using Juniper Network connect 6.3 to connect to our server from my windows 7 system. Recently, I'm unable to connect to the server as the Network Connect software in my system is not working ...
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30 views

where the Windows 7 store Network Adapter settings?

where the Windows 7 store Network Adapter settings? (when changing) In the Registry or in the nvram? Is it harmful for the filesystem or the Network Adapter to perform a frequent changing/resetting of ...
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62 views

Need help understanding network interfaces on my machine

I do not understand why wireshark and the device list on my computer do not show the same set of network interfaces. Also, I am not even sure what some of the interfaces are. Here are the reports: ...
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93 views

Intermittent connection drops on Win 8.1

This is a laptop system. I currently have an issue where my network connection will drop intermittently for anywhere between 5-15 seconds at a time. This is enough to disconnect me from anything I'm ...
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38 views

adding a nic to a linux system

I've just bought an HP NC360T Dual Port Gigabit Ethernet Adapter PCI-E for use in a linux box. I can't seem to see the device on the system. I've used the lspci command to display a list of items on ...
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30 views

Windows 7 network adapter fails to start

I need to restart my Windows 7 computer at least 3-4 times to get my local area connection active. I have tried every option related to power but it hasn't helped. I have the drivers installed, but it ...
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40 views

I want backdoor access via intranet but none via internet - easy solution?

I see my new server has two cards and wonder if I can plug the internet into one and an intranet into the other. I only want access to the OS and program files and MySQL from the intranet side. ...
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1answer
31 views

Is there any way to determine if the router is forwarding WoL packet to the NIC card while the computer is turned off?

I am having hard time figuring out whether the problem is with the router not forwarding the packets to the NIC OR the problem is the NIC not waking the PC or other hidden settings that are preventing ...
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1answer
7k views

I have LOTS of TAP-Win32 Adapter OAS and TAP-Windows Adapter V9

What are these, and what are they used for; how do I get rid of this? Because I haven't got OpenVPN or any other VPN-client installed on my computer (to my knowledge). I am not sure but I thing this ...
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2answers
262 views

Why does Firefox not auto-detect the proxy after upgrading to version 31?

My Firefox cannot detect the proxy any more after upgrading it to version 31. The proxy setting inside Firefox network option is Auto-detect proxy settings for this network. Before upgrading to ...
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LAN adapter works every second time I turn my PC on

I have a really strange problem and I am desperate for help now, since I could not find any solution on the internet. Specifications first: I am using a desktop computer and a router. The router ...
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1answer
14 views

how to setup routing on Win 7 to send all data going to 10.148.xxx over ethernet and all other ranges over wi-fi?

I want to setup my win 7 to route everything going to the 10.148.xxx.xxx over my Lan and everything going elsewhere over my wi-fi. Any help?
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185 views

Can't Bridge Windows 8 Ethernet and Wireless Adapter

I'm trying to bridge my Windows 8 laptop's wired and wireless adapters so I can get internet on an older computer (not that old it's running Windows 7 Ultimate). I did this before a while back but now ...
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35 views

How to use Two NIC Parallaly in Linux Centos 6

I have System with two NIC. I have to Applications & I want to use both NIC at same time(Parallel). Problem is that both Lan card not active at same time. If I disaled eth0 than eth1 is works. ...
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2answers
119 views

Disable Intel(R) 82578DM Network Connector permanently

My computer, HP Compaq 8100 Elite CMT x64-based PC, running Microsoft Windows 7 Professional (64 bit) is equipped with an Intel(R) 82578DM Gigabit Network Connection which connects to the Motorola ...
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16 views

How to overtake the limit of NICs in virtualization softs?

I want to connect unlimited number of NIC to a mikrotik virtual machine but all virtualization softwares has limit to the number of NICs so, is there a soft that doesn't have limit? if there ...
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1answer
78 views

Prioritize network adapter initialization on startup

TL;DR: How to make the network adapter connect earlier/faster? When I start up the OS (Win 8.1) from either Hibernation or from a full restart my network adapter won't connect as fast as I'd like it ...
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28 views

How to get 300Mpbs link speed on 802.11n [duplicate]

I know that "link speed", is not the same as actual throughput, but shouldn't 1x 802.11n channel (20Mhz) at "Excellent" 100% signal strength connect at 150Mpbs link speed? I was configuring my Asus ...
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141 views

10 Gb NIC autoneg off?

I have fancy mellanox 10Gb NIC but somehow I can see frameerrors whenever I am stressing the hadoop cluster. Our network guy told me the switch has been hard coded as full duplex and autonegotiate, ...
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49 views

Download speed and ping suffers during PC to PC file copy

Why does the ping and internet download speed suffer on PC#1 when files copied from PC#1 to PC#2? During file copy, my ping goes from 20ms to 600ms+, Download speed goes from 1.8MB/S to 250 KB/S give ...
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113 views

Frame = Dropped on Hadoop 10G NIC

I have a small hadoop cluster and there are errors constantly in the log of ifconfig and also from the cloudera manager, I can see frame errors. Here are some basic information about the interface ...
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36 views

Read registers on a NIC card on Windows

I have a Realtek Ethernet Controller on my x86 machine running Windows 7. I have the datasheet for the Ethernet controller. I am trying to debug a low-level issue and I need to read certain registers ...