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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Hyper-V Network Adapter

I have a setup a Hyper-V VM on my server. I have the NIC setup in Hyper-V manager. I also have the my VM settings pointing to my NIC. I can't access the Internet. Here is a picture of my Hyper-V ...
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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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95 views

Find processes using a network device

How do I find which processes are using a given network interface at any given moment? I am using Fedora and Ubuntu.
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190 views

Windows XP change the order of IP address in a NIC having multiple ip address

I've a NIC with two IP address. Now how can I change the order of the IP address so that I can bring any one to the top and have precedence over the other IP addresses. I know I can change that from ...
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139 views

Limited connection whenever I connect to a Wi-Fi network outside the company

Whenever I connect my work laptop to a wireless network outside of my company, the connection shows as Limited, and there is no internet access. I have tried several times by disabling/enabling the ...
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516 views

Binding a program to a specific Network Adapter

I am just using my windows7x64 desktop and I want a utility/program that allows me to chose which adapter a program uses for example, running a game through Adapter1 and Streaming videos through ...
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178 views

HP DL380 using HP NC522SFP NIC shows supported link modes: not reported

When using ethtool on this NIC, the supported link modes show "not reported". Any idea why this is the case? Settings for eth0: Supported ports: [ FIBRE ] Supported link modes: Not reported ...
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95 views

Bridge NIC to VM without it being used by Host-machine?

I would like to bridge some network cards so that my virtual machines, running in VMware workstation 9, can connect through them, but not the physical windows computer on which the VM's are running. ...
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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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34 views

Why can't I seem to keep a reliable connection when utilizing two adapters?

I'm currently in an interesting situation. All of my computers are connected to a wifi network (which has an internet connection). Connecting to that is easy enough. In my room I also have a local ...
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73 views

Devices with user re-writable MAC addresses [closed]

I'm looking for routers, cell phones, Internet sticks etc. that have user modifiable MAC addresses. Does anyone know how to spot them?? Also how to write the MAC address.. I've heard Linux is a good ...
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418 views

Specific ethernet cable not working with router only, but works with NIC

I have a DLink DIR-605L, which is a 10/100 Mbps (non-ADSL) router. I am connected to it on a Desktop with a Realtek Network Adapter onboard MSI P45 Platinum. I also have an Asus X54H-SX137D. Both ...
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244 views

Cable unplugged after NeoRouter connection disabled once

Network adapters can be disabled and then enabled again in Windows. This doesn't work for the NeoRouter network adapter, which is a VPN shell. What happens is that once disabled, this adapter can't ...
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638 views

How to automatically change network adapter settings upon new network

I am connecting to many different networks on a regular basis. Some use DHCP and the other requires a static IP to be set in different network classes (10.x.x.x, 192.168.x.x) Is there a way to set ...
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877 views

Speed/Duplex auto-negotiation suddenly stopped working

Today my internet suddenly stopped working and the network adapter started cycling between "Network cable unplugged" and "enabled". I googled the issued and some people suggested to modify the Speed ...
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383 views

Dummy interface in an LXC guest

I am trying to create a split-horizon PPTP setup as described on my website within an LXC container. However, I need a dummy interface within the container to put the DHCP server on. Here comes the ...
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208 views

If there are 2 NICs on the same machine, can a TCP client on one NIC connect to a TCP server on the other NIC?

I use TUN/TAP to create a tun NIC tun0 with IP 10.10.10.2, and I have a real NIC eth0 with IP 202.112.34.49 Then I run a TCP client which binds its socket to 202.112.34.49 and a TCP server binding ...
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140 views

Several hardware components either work or not after booting

I have a desktop computer which I put together myself and in the last weeks I discovered a strange behavior. The same issue refers to three components independently. The onboard network controller, ...
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122 views

“This device cannot start” error - Intel motherboard, 3-COM NIC

I have an old(ish) computer with an Intel D850EMV2 board. I've installed a 3COM 3C-905C-TX NIC on it. Windows boots fine, but the NIC exhibits a This device cannot start (Code 10) error. My BIOS ...
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740 views

Linux Mint chooses random MAC address on bootup

Every time I start a machine with Linux Mint 14 installed, the Ethernet NIC chooses a random MAC address to use. Is there a way to disable that behavior?
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115 views

Windows 7x64 ENT - Network card fails after Windows Update

I am building a new desktop from scratch. I installed win7x64 ent and everything worked fine. I then let the system perform the initial update to windows. There were 152 updates totaling over ...
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614 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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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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How to identify which network interface is my application using [duplicate]

I hoped to capture network traffic -using Wireshark- via a port on which my application is running. However when I fired up Wireshark, it listed 4 network interfaces not just 1 as I expected. So I ...
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790 views

Windows Network Bridge Connections Greyed Out

I can bridge the connection under administrator account. I have disabled the prohibit installation and configuration of Network Bridge on your DNS domain network Group Policy setting. The option to ...
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1k views

Extract ip address from specific NIC in win7 batch file

I am building a batch to automatically switch a proxy config and the related ip settings bui i am having trouble extracting the ip address of the network adapter i need. I have one "real" nic, and two ...
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214 views

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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No network after Windows crash

Windows 7 crashed on my Toshiba Satellite Pro s500. Following reboot, neither the LAN card nor the wireless cards work anymore. The LAN card appears on the Device Manager, but not on the Network ...
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824 views

Restarted PC and my network controller can no longer be found

Pretty much what the subject says; I did a restart of my computer and now my network controller (it's integrated in my Asus motherboard: ASUS M5A97 R2.0) doesn't appear anymore as detected hardware; ...
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81 views

Windows 7 - Find some certain Network Adapter Details

So, I know I should not ask about homework, but really my mind is blown by how the searches turn up nothing. I have a certain assignment that asks the following: Using the graphical interface find ...
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55 views

Host Not reachble on a Network Interface

I have two network interfaces on my linux system. When I select eth0 as default gateway , everything works fine. I can connect to the system from other computers, but when I select eth1 as default ...
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Windows 8 - LAN connection doesn't startup on reboot

I don't know what's gone wrong, but of late whenever I reboot my Win 8 Pro x64 box, the ethernet connection doesn't turn on by itself. I have to go into network settings and manually disable/re-enable ...
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782 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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Network disabled in Windows 8 PC on startup

Windows 8 64-Bit pc will not detect network on startup. Every time we have to do a "scan for hardware changes" in device manager. Otherwise it will not connect to network automatically. We did ...
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2k views

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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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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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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Does Windows 7 support 802.3ad (link aggregation) natively?

I'm trying to understand what's needed to make Windows 7 combine two Ethernet ports into one virtual 2 gigabit port. I know I need 802.3ad compatible switch, my NAS also supports 802.3ad, but it's not ...
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Localhost pinging when there is no network card

How it is possible to ping localhost when there is no network card.
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2k views

Scan for hardware changes

In windows 8 PCs, the network will not connect at startup. If we do the "scan for hardware changes" in Device manager, then only network will connect. But the same pc was connecting in windows XP. ...
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61 views

Program for separating connections for different program traffic?

I have seen that for combining 2 different connections into one for gaining speed you have to set up routers and flash their memory or buy new ones, and that's the only way for combining it by ...
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What is wake on pattern match in network card preferences?

I know the Wake on LAN standard, but I don't understand what the wake on pattern match option means. What does this option mean?
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How is ARP about two VMs running on VMWare?

I know that systems in network connect together with IP and Mac address ,But insofar as i now all of OSs running on virtual machine use a common network card.I want to know how another systems connect ...
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Merge two 1GBps NIC's on a single PC

Is it possible to merge two 1GBps NIC's on a single PC thereby doubling the available LAN bandwidth? Two other PC's would then be able to request data at 1GBps each instead of splitting the 1GBps NIC ...
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753 views

Why does my computer lose access to mapped drives after being locked?

I am running Windows 7 on two computers connected via crossover ethernet cable. I lock both computers when I am going to be away for a while. When I unlock the left computer, the mapped network drive ...
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1k views

DNS Resolution Issue - Error 105

I cannot connect to the internet. I am having issues resolving DNS (Error 105) in all browsers on my Dell XPS 15 laptop running Windows 8 64x. There is also a dual boot with linux Mint running that ...
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136 views

How do I connect ADSL modem to cable internet

I have a TPlink TD-W8901G and I have a cable internet. When I connect cable internet via a RJ45 cable my PC has internet, but when I want to use wireless it can't connect to my laptop. What should ...
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6to4 vs ISATAP vs Teredo Adapters

I understand that all three adapters mentioned in the title are related to transitioning IPv4 to IPv6. ISATAP: Transmits IPv6 packets between dual-stack nodes on top of an IPv4 network. Teredo: IPv6 ...
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Wake on LAN option in BIOS

In the BIOS option for many PCs I've looked at- you typically see these 3 options (among others) which you can enable/disable independently: Power On By External Modems Power On By PCI Devices Power ...
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Laptop won't connect to router, however will connect to other routers and router works with other laptops

It seems I've come across an issue that is unique to using a particular laptop with a particular router. From an initial observation it would appear the laptop is having trouble obtaining an IP ...