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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Conflicts between 2 NICs

I have an HP server (Windows Server 2003) with 2 external NICs (couldn't get the builtin NIC to work). One is for an internal network of 4 PCs and the other is for part of an Internet-facing ...
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2k views

Internet Connection not working - USB LAN connection - from particular modem

I am trying to fix Internet connection on a friends Dell inspiron 1720 with XP service pack 3. It has an integrated network card that stopped working, after powering down/up the modem still didnt ...
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Can't added back my client for microsoft networks in Windows 10

I can't open network shared folders. Got to looking at my NIC properties, and I found that I was missing everything buy IPv4 and IPv6. So I started to try to add back to client, and protocol. I can't ...
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267 views

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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155 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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How can I tell if my wired ethernet connection is using 802.1X authentication on Windows 7?

From a command prompt (or a script) I'd like to be able to query the wired interface to determine if it has succesfully established an 802.1X connection, or if it has fallen back to unauthenticated ...
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888 views

Trouble setting up more than 4 network adapters in VirtualBox (XP Guest)

I've been trying to setup the 8 network adapters that VirtualBox is supposed to support, through the command line. I need them as bridged networks (because I use them to forward ports from a server ...
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3k views

Can't get hostednetwork started in Windows 8 x64

OS: Windows 8 x64. Mobo: ASUS P8Z77-V Deluxe. I can't start an Access Point with my computer. I tried everything. I tried netsh wlan commands from cmd (with Admin privileges) and it returns the ...
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868 views

Connecting to Bluetooth Personal Area Network Fails

I'm trying to connect to my phone's Bluetooth PAN but nothing happens when I do. I click the button that says "Connect Using" which gives me two options: [Option 1] "Direct Connection" ...
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406 views

PC flooding & crashing network switch only after it's shutdown

I discovered this problem because EVERY SINGLE TIME I left the house my Internet connection would go down and I would not be able to remotely access my netowrk. I installed Windows 8.1 RTM on my ...
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100 views

What could be causing two different laptops both with Wireless-N adapters to have very different speeds?

My dad recently bought a Dell XPS 14 laptop that had an integrated Intel(R) Centrino(R) Advanced-N 6235 wireless adapter, but it appears to be known to drop connections a lot. He'll suddenly get ...
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848 views

Prefer WiFi over Ethernet

I want to use my Ethernet power line adapter in order to use Wake on Lan for my desktop PC. However, once it has booted into Windows, I want it to use my WiFi by default, as the powerline adapters ...
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3k views

How to upgrade Intel(R) 82567V-2 Gigabit Network Connection Drivers for Windows 7 64?

Problem When I go to Device Manager, under Network adapters I have an Intel(R) 82567V-2 Gigabit Network Connection adapter that has a yellow exclamation point. I am trying to upgrade its drivers but ...
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654 views

Ubuntu: How to get wireless lan and 10/100 running simultaneously?

I am running Ubuntu 10.10 on a Dell Inspiron 6400. I am able to get 10/100 Ethernet card and Wireless Lan working independently. Ethernet -> eth0 Wireless Lan -> eth1. If I restart/reboot my eth0 ...
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3k views

Updated Win XP to 7: network adapter driver issue

I updated Windows XP on my old laptop to Windows 7. After installing I tried to open internet connection but Win 7 says that it cannot find network adapter because of a missing driver. I tried to find ...
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2answers
511 views

Weird connectivity issue wtih USB Wifi stick

I'm setting up two PCs, and I've been having massive troubles getting a USB wireless dongle working. I have two Sony VAIOs (Windows XP, SP2) that I found second-hand, and since they will be in a ...
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Use-cases for assigning multiple IP addresses to 1 NIC [closed]

What would be some of major use-cases in which you would want to assign multiple IP addresses to your NIC? Knowing of any standard/well-known 'gotchas' associated with each use-case would also be ...
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441 views

How to send to the “loopback interface”?

Does it mean the same as send to localhost ?
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Disable wireless light?

Is there any way (program, registry key, etc.) that I could disable the little light that turns on whenever WiFi is enabled? I would still like to have WiFi enabled, it's just that I want the light to ...
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2k views

Network card three-pin connector

I've got an Asus NX1101 gigabit network card. It has a white connector with three pins. What is it for?
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3k views

How can I disable internet for a specific interface in Windows 7?

I have two NICs on my machine, one which connects to my network and has my internet connection. The other connects to a buddy next doors network with his internet connection. I don't want Windows ...
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634 views

My network adapters can't detect 802.11a radio wifi

I have two adapters, one has the Atheros AR9002WB-1NG and the other is a LAN USB Adapter #4. For some reason or the other they both can't detect 802.11a connections. Can someone explain this to me?
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Realtek NIC running at 100Mb/s rather than 1000Mb/s

My Realtek NIC in my Windows Home Server (essentially w2k3) box refuses to run at 1000Mb/s even if I change the driver settings from Auto Negotion to 1000Mb/s full duplex. I've installed the latest ...
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Wireless USB adapter with OS X support? [closed]

I haven't been able to locate any other wireless USB adapters with OS X support. It should rather be able to handle 108 Mbit/s or higher. Any suggestions? Edit: As I'm not a Mac user, I totally ...
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role of virtual network adapter

Please correct me if I am wrong in saying that network adapters(not considering virtual network adapters) represent a particular interface of a machine having a unique MAC address which can establish ...
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8k views

Generic Ethernet drivers for WINDOWS

Background: I have a custom built box that I like to setup with multi-boot using GRUB2 and having Windows 7 x64, latest Linux Mint x64, and couple other Linux/Unix distros. I've had this setup ...
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Connect VirtualBox to a different internet connection

At the moment, I have my host machine setup to access the internet using the main ethernet connection via a NIC. I have a VM which currently has it's network settings set to NAT, this allows the ...
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581 views

What's involved with installing a JetDirect card for an HP Laserjet 4500?

So I have an opportunity to pick an HP 4500 Laserjet for a pretty good price and am on the fence. The only problem is that it currently only has a parallel connection on it. However, the seller ...
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51 views

Can not go to the router admin page through 192.168.1.1

Just install the router and can not access to router admin page when I go to cmd and type ipconfig, it show something like ipv4 1.64.23.97 child network mask 255.255.255.255 default gateway 0.0.0.0 ...
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158 views

I don't have eth0 but eth1

How come I don't have eth0 but an eth1 instead? I restart service udev, like below, but my ether card is still eth1, not eth0 % service udev --full-restart * Stopping the hotplug events dispatcher ...
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7k views

Atheros AR9485WB-EG wireless adapter on Linux Mint

I have a new ASUS X552C laptop. It is working like a charm, but I ran into a problem when I decided to install Linux Mint. It seems like my Atheros AR9485WB-EG wireless card is not recognized by the ...
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583 views

What is the real capacity of a network device (ethtool - MiB or MB?)

MiB = MebiByte = 1024*1024 MB = MegaByte = 1000*1000 ethtool returns speed = 1000MB/s ifconfig documentation indicated it returns units of MiB How can I tell from that ...
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ping using mac addresses or link local ipv6 addresses

I have 4 Virtual Machines (Ubuntu 12.04) running on a host that is also running Ubuntu 12.04. The Virtual Machines are named: switch-vm vm-1 vm-2 vm-3 Below are the network settings on switch-vm: ...
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Do I have to install drivers on each network card interface when using network teaming?

If I have network teaming enabled on a set of network interface cards/network adapters and I am required to install drivers, is it sufficient to install them on one network card or do I have to ...
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593 views

Multiple Wi-Fi cards and Internet connections on Windows 7

I have two Wi-Fi cards and two separate Internet connections. I connect to the Internet with both of them but one does all of the Internet transactions (and I have not seen any place where I can ...
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10k views

How to configure LAN controller to run at 1Gbps connectivity?

I have a few computers connected through a Gigabit router which show 1Gbps connections. However, one of the computers only shows 100Mbps connectivity even though it is capable of 1Gbps. I am not ...
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984 views

Ubuntu network card problem

Several days ago, I installed Ubuntu 9.10 onto my Acer Aspire 3100 laptop, running it alongside Widows Vista as a dual-bootable system. Creation of the Ubuntu boot CD went fine, and the installation ...
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In Virtual Box, how do you know which NIC is which from the linux command line?

I've run into a problem a few times now where I'm installing linux in a virtual machine, and all of my interfaces look like "enp0s3" or "enp0s8" ect. In one test, I was running a VM with 4 virtual ...
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716 views

Asus P8P67 Deluxe mobo: Network adapter off when PC is off; can't wake on LAN

My Asus P8P67 Deluxe (rev 3) motherboard includes an Intel 82579 LAN controller. I have enabled wake-on-LAN with these instructions and it works from sleep, but it does not work when the PC is powered ...
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Is it possible to wake up an ACPI S3 suspended Linux System with an SMB packet?

I want to put my Debian NAS system in supend to RAM mode (ACPI S3) after a decent period of time idling in order to save some power. I thought about putting the NIC in a mode, where it waits for ...
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2k views

Unable to capture wifi traffic with wireshark

Even a few days ago everything was fine, but now simply I can't capture and see tcp, http, etc. wifi traffic but only the traffic for the protocols 802.11 and LLC. I used different wifi spots ...
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How to set NIC in promiscuous mode on mac book air?

I am trying to run my nic on MacOSx at promiscuous mode and then use tshark / tcpdump Option1: ifconfig en0 promisc but I get this message: ifconfig: promisc: bad value Option 2: I tried sudo ...
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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 ...
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1k views

Are USB Ethernet adapter slower than embedded NIC?

I've just bought an usb-lan adapter. it is usb 2.0 and 10/100Mb it connects in full duplex at 100Mb but it is really slow: it goes 10Mb Compared with embedded NIC same file transfert goes ~100Mb Is ...
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4k views

what is the difference between a host adapter and network card?

what is the difference between a host adapter and network card? I know that a netword card is the electrical circuits in the computer where you plug your ethernet cable into in order to gain internet ...
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347 views

Software Diagnostics Tool recommendations for Debugging a Windows 8 freeze

I've had my HP Pavillion dv6 laptop since last November - and it has had 8GB RAM and a 256GB Crucial M4 SSD installed since the start. I use it for software development and it's had a Windows 8 RTM ...
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620 views

NIC: Changing Link Speed & Duplex to Full Duplex Is Drastically Slower

I have an old Win Xp box with a 100 PRO/100 VE NIC and connecting to a Win 7 box with gigabit NIC via an ASUS gigabit router and peer to peer. I was getting 76% network utilisation on the XP machine ...
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VMWare Player 5.0 Upgrade - Bridged Networking No Longer Works

I've been using VMWare Player 4 on my Windows 7 PC, running my VMs under a bridged networking configuration without any problem. I settled on bridged networking two reasons... I often use VMs to ...
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358 views

Network card shuts down when stressed

I have a network card that functions fine with light use, but quits functioning after heavy use. I replaced it with a brand new one and still have the same issue, also updated drivers. It is a wired ...
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665 views

Wireless not detecting signals after hibernation, reboot doesn't fix it

The wireless adapter (Broadcom 802.11n Network Adapter) of my Lenovo S10-3 is being detected correctly in the device manager in Windows, but I am unable to detect any wireless signals. This happened ...