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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VirtualBox network adapter blocking samba share

My host is Windows 8.1, my server is a Raspberry Pi (irrelevant). My server is giving all nodes on LAN a samba share, however my desktop has VirtualBox installed. I am unable to access my samba share ...
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DNS server cannot get DNSSEC information

I did the netalyzr test which checks some ports and network configs. The result was strange. It contained a problem with DNSSEC: Only some DNS root server instances returned proper DNSSEC ...
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Can't disinstall Intel(®) Centrino(®) Wireless-N 100

I need to disinstall Intel(®) Centrino(®) Wireless-N 130, but when I try to disinstall it, nothing appens: ComputerManagement -> Device Manager -> Network Adapters -> Right-Click on Centrino -> ...
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22 views

Is there an fast open-source portscanner? [closed]

Looking for a fast open-source c# port scanner ? Using handshake layer, pcap. Want some example for studying purposes.
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1answer
33 views

network connection suddenly disconnected and disabled during large file transfer over the network

I am currently using windows 8.1 64 bit on my laptop. I have a working network setup and I can start to transfer some large (20+GB) files. However after a few minutes the network connection ...
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1answer
47 views

Unable to access localhost & Internet using one adapter in CentOs

I have the below dev. environment. Hardware:- Windows 7, 32bit, HP Laptop. Software:- CentOs 6.5 running on VirtualBox 4.3.10. In a nutshell The problem is that I can't access the internet and ...
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Use devcon to create multiple loopback adapters

I need to create multiple loopback adapters on a single box. I can do this manually using Device Manager, but would like to automate this using the devcon.exe utility. When I call devcon install it ...
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39 views

Bind incoming packets to 1 interface and outgoing packets to 2nd interface?

I am have a Linux machine with 2 network interface cards, I need to use one for incoming packets, other for outgoing packets.
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Does a VirtualBox/CentOs need two adapters to work properly ?

I have a Windows 7, 32bit, HP Laptop. I have CentOs 6.5 running on VirtualBox 4.3.10. Here is my eth0 config. Code: #vi /etc/sysconfig/network-scripts/ifcfg-eth0 DEVICE=eth0 ...
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30 views

Can't set a connection priority on Windows 7

I've being trying to set a connection priority as shown on the link below: http://windows.microsoft.com/en-us/windows/change-network-protocol-bindings-order#1TC=windows-7 But what should I do if my ...
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13 views

How to use netperf on specific NIC port?

I have two servers, SERVER and CLIENT and each server has its own onboard 1 GbE ports, and its own NIC with a 10 GbE port. SERVER and CLIENT are interconnected on both a 1 GbE switch (administrative ...
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Are the network interface card same in all cisco devices

I have old cisco 2600 routers but they dont have any network interface card My friend has cisco pix firewall which has network card attached with 4 ports so can i pull the network card from cisco ...
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Jumphost VM not able to communicate with LAN

I have setup a jumphost VM on WinXP. It has 2 NICs. NIC1, which is the LAN, has the following IP settings: IP: 10.0.0.1 /24 (No default/ DNS configured) NIC2, which has external connections, has ...
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34 views

ethernet interfaces are sometimes renamed to 'renameX' on startup

I've installed a recent daily build of Ubuntu Trusty on several HP dl380e 2U servers. These servers have 4 x 1Gb onboard NICs. In addition, I've installed a PCIe 2 port 10Gb NIC in each server. The ...
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2answers
122 views

How to disconnect/connect ADSL modem connection to ISP by command? (Windows 7 SP1 x64)

I want to write that command in a .bat file and run it by windows scheduler at certain times of night and morning. (for example: open connection at 23:00 and close it again next day at 9:00 ...
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26 views

Multiple MAC addresses on a single network interface (Windows)

Since the other question about this (Multiple network interfaces on a single NIC in Windows) only asks about different routing, I'm going to ask this again: Is there any way to create multiple ...
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41 views

How can I diagnose suspected NIC issues?

Over the past few days my ethernet-wired internet connection has started acting up. Here are some of the issues I've encountered: Websites are intermittently slow to load. Large downloads routinely ...
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Using DHCP to get multiple IP addresses on single NIC on RedHat

I am trying to obtain multiple IP addresses using the ISC dhclient supplied with Red Hat Enterprise Linux 5 in order to provide the IPs to multiple applications, which will run on separate virtual ...
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42 views

Network adapter settings via cmd

How to open setting of the specific network adapter via commandline in Windows 7 Enterprise? I'm under domain user but also have access to local administator user. Under domain user I have no rights ...
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31 views

How to Tell If NIC supports Gigabit Ethernet

How do I know if my network card is capable of gigabit speeds under Windows 7?
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Disable network connections on Windows 8.1 startup

How can I configure Win8.1 to start with all network connections disabled and then be able to re-enable them afterwards on demand?
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15 views

Can HP Prolaint DL-380P G8 handle 3 NICs at the same time

I have HP Prolaint DL-380P G8, Windows server 2008, And I would like to install additional 2 NIC , is it possible to do that ?
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My adapter often fails to work

Sometimes plugging and unplugging the cable works. This time it doesn't. It says that I am not connected to the internet. I finally have to restart the computer. Then it works again. I wonder what's ...
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14 views

merge two net adapters for better stability and bandwidth

On Windows 8 x64 I use two main methods of connectivity: wifi usb 3G modem Both have stability issues. Each has a theoritical max of 512kbps from the ISP. What is a hopefully simple, built-in to ...
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25 views

WindowsCE device with single NIC - Two IP address ranges

People, I have got a question about a windows CE device which has a single NIC (and no possibility to extend the device with a second NIC). This device is configured to use a fixed address CE ...
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27 views

Why do hubs and switches receive on pins 1 and 2 and transmit data through pins 3 and 6 of their cable?

Is there any reason they couldn't have been made to use the same pins as NICs and routers for transmitting and receiving? I had trouble finding any information about this through Google, so I hope you ...
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Hidden network interfaces

I'm trying to list all network interfaces in a linux server (network sniffer). When I use the command tcpdump -D is shows only the managing ports and lo. Are the other ports hidden some way? Is there ...
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How does synchronization between two independent computer's NIC work (e.g. on Ethernet)?

I'm currently studying computer networks and the question came to my mind, how it is physically possible for the NICs of two networking computers to determine the clock rate of incoming datastreams. ...
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42 views

Which is better:1x1ac or 2x2n, on an 802.11ac network?

I am configuring a new hp computer and I was wondering if I should get 802.11ac network card that is 1x1 or if I should get a 802.11n network card that is 2x2. I am on an ac network. So the ac card ...
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51 views

Windows internet connection only after deactivating and activating LAN adapter

When I start my Window 7 PC I get no internet connection. LAN works, but internet does not. If I deactivate and then reactivate the LAN adapter, I get an internet connection. Any idea what could be ...
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63 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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29 views

A few computers loss internet but can access local resources , other 8 never loss connection

This is a small network with Comcast ISP ( Cable ), there are 11 PC connected to network all are wired Ethernet, the same 3 computers will loss there internet connection sometimes, not all at same ...
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28 views

How to Remove Juniper VPN Network Adapter

I am having trouble with my Juniper VPN Adapter. Apparently the Juniper Client does not like Windows 8.1 IE11 and does not work properly so I want to remove it. When I uninstalled the Juniper ...
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77 views

Why I get a VMnet Network Adpater's IP even if my Wireless Network Adapter has priority?

On Windows 7, when I try to ping my computer name I get an IPv6 address, so I ping with -4 option, then I get an IP related to my VMnet (VMnet1) Network Adapter which results 192.168.220.1, and not ...
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Connect a second netowrk powerline adapter to network

I bought a network power line adapter and it works well. The unit I bought came with 2 adapters, one plugs into the router and the other goes to the computer. I wanted to know if I was to purchase ...
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HP J8156A Vernier network adapter

I've got a network card, that may or may not be working that I am trying to use in my home server. Got it from ebay as "used".The card does not let the computer boot, the computer turns on, but ...
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100 views

Enabling eth0 or eth1 for internal network in computer without internet access

I am installing virtual box in computer without internet access. I am not sure this computer has network adapter (Ethernet) or not. I have two virtual machine which can communicate each other (I ...
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IPConfig lists very strange tunnel adapter

I was trying to troubleshoot a different computer on my network, and ran ipconfig on MY computer for reference. One of the adapters listed is - Tunnel adapter satapi.GHGKZ.com: Google has ...
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Add a Virtual Non-Existent Network Adapter Windows 8

I want to test a pfsense install inside of virtualbox but the installation will not allow you to install unless there are atleast two network cards present on the system. Is there a way to install a ...
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144 views

A quest for internet access ( Unidentified network and Error 651 )

I'm stuck with one of the most harsh problems i had to deal with, regarding fixing my computer.Im trying to solve it for days ( have searched a lot on the web ) and no results so far. The problem is ...
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37 views

Connected with limited access (drivers?)

My PC with Windows Vista had some wireless problems 3 years ago, so I bought a wireless adapter, which worked fine. But a few days ago, it suddenly didn't connect anymore; the network manager says it ...
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34 views

Reset network byte counters shown at status dialog?

Problem is that I can't read RX byte counter value as it will not fit inside window anymore. How can I reset counters shown below without disabling network adapter:
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31 views

Network connection disappears when I open WOW

I changed my motherboard several days ago. (ASUS G41) Now I am running on Windows 7 Ultimate 32 bit. Everything is OK, but when I open WOW (World of Warcraft) the network connection disappears and ...
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154 views

From a command prompt, change OpenVPN adapter from Public to Work location/profile on Windows?

I'm working on a silent installer for OpenVPN as part of a bigger software package to be deployed on numerous Windows systems within my employer's corporate network. I'm able to get OpenVPN to ...
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28 views

NIC does not like network cable

Alright Gang, I have a good problem for you guys. I have a test station with a network cable that works flawlessly on every single NIC it connects to EXCEPT nforce ones. Why in the world, would ...
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38 views

Virtual Network Adapter

I am new in networking and virtualization. I really need assistance on this problem. I have a scenario: there are 4 virtual machines that created through VirtualBox on WIN7. 2 of them are centos, 1 ...
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452 views

Is the reason for weak wireless signal on new laptop the wireless card itself or the antennas?

I just bought a new laptop ASUS N550JV. I wanted to test the wifi receivers of my two laptops (the old and the new), so I put them together and scanned for the neighboring wireless connections. My old ...
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91 views

Traffic Route mismatch with two NIC Windows Server 2008

I have small issue on my network I have two NIC, NIC 1 Connected to the internet and local network, NIC 2 Connected to Sip Trunk Circuit (No Internet) Each one of them has different Gateway. My ...
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Convert or add a localy installed linux distro to PXE-boot server

I have a Linux distro installed (debian) and configured in a VM. I'm looking for a way to add it to my PXE-server so that clients can boot to it (live session) Very confused at the moment, should i ...
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Ethernet to USB adapter vs USB Ethernet card?

I would like to connect two computers so that one is connected on physicall via the "standard ethernet jack" (got lost in the naming, i believe it's 8P8C) and the other will be connected to a USB ...