Networking is the art of connecting two or more devices together so that they can communicate with each other.

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How come sites like Google/Facebook/etc. don't get DDOS'd even though they receive so many requests?

Something I don't understand: (Tens/hundreds of?) thousands of people simultaneously try to connect to a site like facebook.com or google.com. From what I understand, they must all necessarily ...
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3answers
27k views

How to disable autoconfiguration on IPv6 in Linux?

How can I permanently disable autoconfiguration of IPv6 in Linux? When I try to manually delete an address from an interface with: ip -6 addr del 2001:0db8:85a3:0000:0000:8a2e:0370:7334/64 dev eth1 ...
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5answers
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Pinging a machine on my local network gets an 'unreachable' response from my own IP address?

Edit for future readers who get here from google: This question is now the top google result when searching for 'destination host unreachable from my own ip address'. If that's how you got here, then ...
14
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3answers
22k views

How do I set the priority of network connections in Ubuntu?

If a Ubuntu 11.04 machine is connected to WiFi and 3G simultaneously, how do I set the priority to let the applications (browser etc.) to use WiFi first? If that's not available, it should use the ...
14
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1answer
47k views

Tunnel adapters on ipconfig?

Hello I recently noticed unusual information in my IPCONFIG. Usually I only see Ethernet adapter Local Area Connection, but now I see Tunnel adapter isatap... and Tunnel adapter Teredo... I was ...
14
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3answers
39k views

Windows 7 - Cached Network Share Credentials?

I have an issue in Windows 7 where I get the following error message when attempting to access an admin network share on a machine in another domain: Multiple connections to a server or shared ...
14
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5answers
36k views

how does 'ping' command really work?

How does the ping command really work? Specifically where does the ARP (Address Resolution Protocol) come into picture? I was asked this question in an interview and I was not able to come up with ...
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14answers
45k views

What's the fastest way to transfer files between 2 computers? [closed]

Let's say that I have 80Gb of data to transfer from one computer to another. What's the fastest method to transfer that files? Network transfer? DVD Recording? Copying in a pen drive? Removing one ...
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9answers
49k views

Are routers limited to number of devices?

I'm going to buy a new router, but, I've just realised that for nearly all routers I've looked at (Belkin, Netgear, D-Link) don't state the maximum number of devices which can connect concurrently. ...
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9answers
2k views

Why are Ethernet/MAC addresses needed?

I don't understand why Ethernet MAC addresses are needed. Can't all computers just be connected to the unified network and use IP addresses to communicate? For example, there is a following mechanism ...
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4answers
35k views

How to increase Remote Desktop resolution?

I'm using Windows 7 on a PC and connect to it via Remote Desktop Connection for Mac by MS, using a Mac. On the Mac, I have a 27" Display with 2560 x 1440 px resolution. The PC has a high performance ...
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3answers
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500 Mbit/s powerline network, only 3.5 Mbyte/s transfer speed?

I have a TP-Link 500 Mbit/s Gigabit Powerline Adapter linking two computers (one Windows Vista and one Windows 7) in different rooms in the house. As in: Computer <-Ethernet ...
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3answers
5k views

Will multiple switches slow transfer speed

I want to create link between a data server (It's more like NAS) and around 300 computers. Data transferred per day is around 2GB/computer and speed really matters. If I use a single switch it would ...
13
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3answers
1k views

Make it so that multiple devices connected to the same router get their own public IP

I am trying to make my router work in such a way that every device attached to it receives their own unique public IP address, so that any computer would be able to use a direct P2P connection. I ...
13
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7answers
26k views

Getting a VMnet0 error in VMWare workstation after updating host computer from Windows 8 to 8.1

Yesterday, I updated my computer from Windows 8 to 8.1. I have VMWare Workstation 10 running Windows XP on this computer and prior to the update I had no issues connecting to my network. However, ...
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3answers
14k views

How to give preference over one network connection over another?

Like most laptops, it has both both ethernet and wireless networking options. Likewise, I have a wireless router with 10/100/1000 Mbs. 90% of the time, wireless speeds suffice. But once in a while, ...
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2answers
23k views

How can I change the default website connection timeout in Chrome?

I want to change the default timeout in Chrome. In Firefox I can set the value of network.http.connection-timeout in about:config - but how can I do that in Chrome?
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4answers
4k views

Negative ping time?

This is the first time I've seen this and I'm not sure what it means; 64 bytes from 74.125.93.99: icmp_seq=6233 ttl=53 time=545.493 ms 64 bytes from 74.125.93.99: icmp_seq=6234 ttl=53 time=776.093 ...
13
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1answer
207k views

How do I set up Windows 7 to stream media to my PS3?

I have a computer and a PS3 connected wirelessly to my router, but it seems no matter how hard I try I can not get my PC to show up on my PS3. I've also tried setting up a media server with TVersity ...
13
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3answers
978 views

What is IPv6 and why should I care?

What is IPv6 and why should I care? Bonus points for easy instructions for jumping into the bandwagon.
13
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2answers
37k views

Default username/password for accessing network shares in Windows 8?

I always had the same username and password on all my network devices (NAS, desktop PC, laptop) in my small home network. This allows me to access network shares of other devices without having to ...
13
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4answers
11k views

Unable to browse Internet on Mac OS X

I can't reach websites using browsers in OS X 10.6.7 on a MacBook Pro, possibly after resuming from sleep. I've had this problem before and it has been solved by a reboot, but I since I got it again I ...
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4answers
4k views

Monitoring Bandwidth Across Multiple Systems in a Home Network

For the past several years, I have been using a simple software bandwidth monitor on my computer to keep track of my monthly bandwidth usage. It has worked fine (more or less; the numbers are slightly ...
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2answers
4k views

How will home networks work in the IPv6 world?

Right now, I have a home network setup behind a Netgear router. That router has a public IP address I get from Comcast. I also have a computer setup on my home network running Linux that runs a DHCP ...
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8answers
4k views

Is it possible to find a printer's physical location in a building by its IP adress?

I am in a school with probably 200+ computers and I did an IP scan among a certain range and found three or four printers. I was wondering if it would be possible to find these printers in the school, ...
12
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2answers
164k views

Where to download Juniper Network Connect 7

I have a client that needs to connect to his VPN. He uses Juniper Network connect though he currently doesnt have it installed. I want to install it for him but I unable to download from Junipers ...
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7answers
7k views

Disable WLan if Wired/Cable Network is available

The question says it all. All i want is that my W-Lan connection should be disabled whenever a wired connection is available. What would be the easiest way to do that in Ubuntu/Gnome? In all guides ...
12
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3answers
25k views

What is a MAC address, and what does it reveal about me?

Does my MAC address list my name, ect? How do I find out exactly what the MAC address tells me? I know it's the "physical address" of my laptop, but what exactly does that mean? This is what my MAC ...
12
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8answers
42k views

How can I make VNC faster?

I need to remotely access and use my work computer a few times a week. I want to use VNC because of the price. I've used VNC before, mostly on my own network, where it's fast. However, VNC over the ...
12
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7answers
11k views

Why is my subnet mask 255.255.255.255?

I have a modem which used for internet broadband and I got an IP address in the 'A' class 10.x.x.x and have netmask 255.255.255.255. What does 255.255.255.255 mean exactly? When I try to sniff with ...
12
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2answers
23k views

How to delete a VPN connection in Windows 8?

How do i delete a VPN connection in Windows 8? In Windows 8 i can have VPN connections: How do i delete them? Things i've tried: right-clicking the connection name hold-clicking the ...
12
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7answers
36k views

How to remove permanent map of a network drive on OS X Lion?

Some time ago I mapped a network drive on my Snow Leopard Mac, which was upgraded to Lion. The network drive is not active any more and I receive popups all the time with the error: There was a ...
12
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3answers
14k views

How to make Windows 7 remember credentials for a Samba network drive?

I have a Samba share on my Ubuntu server which I map as a network drive on my Windows 7 Professional computer. After every reboot it shows the drive as disconnected and to access it I have to renter ...
12
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3answers
34k views

How to use a home network patch panel?

I'm planning a home network in a house that's not built yet. One recommendation is to add network sockets in various rooms and have them all end in a central place, where it all connects using a ...
12
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5answers
22k views

Viewing CHM Files Across The Network in Windows 7

When I try to open .chm help from a network shared drive I receive the following error: Navigation to the webpage was canceled. I know about the .reg solution described on KB896054 ...
12
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5answers
67k views

Missing eth0 Ethernet interface in Ubuntu — can't connect to router

I'm having trouble getting my Ubuntu 10.04 machine (Sony Vaio VGN-SR490) to connect to the Internet by way of an Ethernet cable connected directly to my router. I'm able to connect to the Internet ...
12
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6answers
27k views

Can I route programs to two internet connections simultaneously in Windows 7?

I have two internet connections - one via a 3G modem, and the other via wireless. The modem is faster so I normally browse with it, but it does not support torrent downloads while my wireless does. ...
12
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2answers
11k views

How to get VirtualBox VMs to use host's DNS?

I use VirtualBox for my VMs. My office network setup is wireless, i.e. I connect to my company's WiFi network, which has a local DNS to resolve local names (such as something.mycompany.com going to ...
12
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5answers
12k views

How can I make Windows prefer my wired connection?

I am running Windows 7 RC, but have noticed this behavior on Windows Vista as well. When I am in an area that has a wireless network and I plug in my wired network so I can get a better connection ...
12
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2answers
6k views

Maximum Length of Ethernet over CAT5

As part of my course I’ve been reading the paper Ethernet: Distributed Packet Switching for Local Computer Networks. I understand that “classic” Ethernet (over coaxial cable) has a maximum length of ...
12
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3answers
107k views

How to remove unwanted tunnel adapter connections?

I did "ipconfig" today and found about 10 network interfaces, most of them disconnected. How can I diagnose this? Where can I remove them? Edit: The extra network appear like this: Tunnel ...
12
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5answers
8k views

Extremely slow internet speed after reinstall

I have recently had a hard drive failure so I was forced to reinstall my OS (Windows 7). After a fresh install, I noticed the internet speed became extremely slow (~15 minutes for downloading a 20MB ...
12
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2answers
5k views

A proper way to create non-interactive accounts?

In order to use password-protected file sharing in a basic home network I want to create a number of non-interactive user accounts on a Windows 8 Pro machine in addition to the existing set of ...
11
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4answers
1k views

Electricity speed and data transfer

I've read in some places that electricity is very slow. Then how can Internet traffic in copper wires be so fast? I think I have a great gap of knowledge about the low-level data transfer structure. ...
11
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5answers
72k views

How to tell what MTU is being used in Windows XP

I'm suffering from a really weird problem where I randomly get "The connection to the server was reset" errors when trying to access web pages (HTTP error 12031 according to the Windows network ...
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2answers
1k views

Why am I seeing multiple different IP addresses reported as my public IP? [duplicate]

Could anyone explain why these sites are showing me as having different public IP addresses? www.whatismyip.com - 46.19.227.251 as my IP showmyipaddress.com - 46.19.227.253 as my IP ...
11
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2answers
9k views

Is there an app for the Mac that shows you which apps are using the network? [duplicate]

Possible Duplicate: Application for monitoring all applications that are using the internet in Mac OS X I use Menu Meters to show me how much data is being sent and received by my Mac as a ...
11
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1answer
818 views

Domain goes to localhost

I have a domain named ejn.nu. On some computers and networks, it sends the user to localhost when it should send the user to my server. When i do "ping", it shows the correct ip for my server and when ...
11
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3answers
12k views

Is chaining two switches different than connecting both switches directly to the router?

I am setting up the network for our small companies new office - I have about 20 computers upstairs and 20 down. There is a switch on each floor, the router is downstairs, and a cat5e cable running ...
11
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4answers
33k views

How to disable ipv6 on a specific interface in linux?

Could someone tell me how to disable ipv6 auto-config on a specific network interface in CentOS? The current situation is: A PC has two network adapters eth0 and eth1 that are connecting to the same ...