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

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17
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6answers
24k views

Why does just splitting an Ethernet cable not work?

I thought the Ethernet is logically a one-line communication bus (for argument's sake, I am excluding hubs). All machines attached on the bus hears the same signals and the machines themselves try to ...
17
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1answer
2k views

Pinging different IP address than what I entered [duplicate]

Can anyone please explain why CMD pings a different IP address than the one I am searching for?
17
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6answers
2k views

Will the ethernet pull bandwidth if unplugged?

I'm fairly certain that this isn't a problem, but like a phone charger it will still pull electricity even though you aren't charging anything if you leave it plugged into the wall. Though minimal it ...
17
votes
4answers
31k views

When concurrently connected to wired and wireless ensure Windows 7 uses wired connection

When I am at my desk and my laptop is in its docking station I want to ensure that it uses its wired connection and not my wireless network. I am hoping/guessing that the preference in connection is ...
17
votes
5answers
2k views

What is the actual IP address of my computer

I am testing out to see whats my IP address but depending on which website I used , I get different IP address . I am using a router If i use this , My IP address is If i use this , My IP address ...
17
votes
2answers
6k views

How do you get loopback addresses other than 127.0.0.1 to work on OS X

According to everything I read, the entire 127.x.x.x subnet should loopback. However, on my Mac, I can only ping 127.0.0.1 I know I've done this before (though possibly on another OS) and has come ...
17
votes
4answers
20k views

How to sniff for wireless MAC addresses in area - My laptop got stolen

A few days ago my apartment got broken in, and they took all the electronics, including my $1500 laptop. We are pretty sure it's an inside job (as in someone from the same building), so I believe ...
17
votes
2answers
685 views

What is a hostname?

I'm setting up a Fedora 15 box in my local network. It's going to have Internet access and share media stuff like photos. In one step of the installation process it asks for "hostname", what could ...
17
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3answers
98k views

How do I join a Windows 8 PC into a domain?

How can I enroll a Windows 8 PC into an existing domain?
17
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2answers
94k views

How to monitor bandwidth use of each device on wifi network

I have in my home a standard Comcast cable internet connection. I have it going from the wall to a cable modem, and from the modem to a late-series Linksys router, which provides wired and wireless ...
17
votes
2answers
8k views

How to start networking on a wired interface before logon in Ubuntu Desktop Edition

Problem Ubuntu 9.10 Desktop Edition (and possibly previous versions as well, I haven't tested them) has no network connections after boot until at least 1 user logs in. This means any services that ...
17
votes
3answers
9k views

Which home router support IPv6?

Which routers suitable for small/home networks support IPv6 as described in the Microsoft document IPv6 Support in Home Routers? Edit: to answer some comments wondering about the reasons of wanting ...
17
votes
5answers
13k views

How to set the Windows network timeout for physically disconnected mapped drive?

When a network drive (net use) is physically disconnected, Windows Explorer (and other programs) keep trying to enumerate and/or use it for maybe 60 seconds. Is there some way to reduce this timeout ...
16
votes
21answers
47k views

How can I send super large files directly to another computer in the Internet for free? [closed]

I regulary need to transfer very large files (30 GB) to my friend - financial statistics. I don't have any problem with bandwidth: it is very broad here. I did some research in the area, so: 1. I ...
16
votes
8answers
102k views

What's the difference between intranet, extranet and internet?

What's the difference between intranet, extranet and internet?
16
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12answers
2k views

What is the most practical security method for a home wireless network?

Quoting Ars Technica: Proper wireless network (802.11a/b/g/n) security is quite simply out of reach for most organizations. ... Given that WEP (both 64- and 128-bit), WPA1/2 (PSK), and ...
16
votes
2answers
103k views

Difference between Ethernet splitter and switch

I have one Ethernet port that is wired directly to the router on another level. However, I want to run a desktop and a server both off this one Ethernet port. Can anyone tell me the difference ...
16
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4answers
62k views

Microsoft Remote Desktop Bandwidth Usage

I am wondering how much bandwidth in terms of bytes sent/received is consumed by a typical remote desktop session. I need to know this because our ISP enforces a cap on monthly bandwidth usage (i.e. ...
16
votes
5answers
39k views

Display list of computers on a LAN in Linux

I'm a web dev who is trying to get a better handle on security. I'm trying to figure out a way (on Linux/Debian based distros) to list all computers on the same LAN my netbook is on. I tried "arp -n" ...
16
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2answers
2k views

Does https encrypt URLs, too?

This is fairly easy. If I go to https://webserver.com/someurl?a=b, will the someurl?a=b part be protected, or just the contents of the site?
16
votes
4answers
14k views

What happens when two computers on the same network have the same MAC address?

I was reading an article on WEP cracking, which said that filtering MAC addresses was not enough, since there are tools to change what the computer reports as its MAC address. This made me wonder ...
16
votes
7answers
153k views

How to bypass web URL filtering service to access blocked websites (proxy)

I'm using network, where services such as Gmail or any other e-mails, Google Drive, Dropbox, all social networks are blocked. Basically my goal is to access simply GMail, but I couldn't find any way ...
16
votes
5answers
40k views

How to tell Windows 7 to ignore a default gateway

I currently have 2 network cards in my PC -- one connected to an internal network on a router with a disconnected WAN port (10.x.x.x), and one connected to the internet through a consumer router ...
16
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4answers
39k views

How do I tell Windows 7 to trust a particular network location?

How do I tell Windows 7 to trust a particular network location? I'm not sure how to elaborate from the title of the question! I keep getting popups aka "this location is not trusted". I've mapped a ...
16
votes
2answers
33k views

How to block all traffic but one IP in Windows Firewall?

I'm trying to use Windows 7 firewall to block all outgoing and incoming traffic, from all IP's and for all protocals, except for UDP to and from one particular IP address. The reason why is because ...
16
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2answers
7k views

Does All LAN Traffic Travel Through A Router

I have a very simple question: if I have a router (DHCP enabled - leasing IP addresses between 192.168.0.2 and 192.168.0.254) with a switch plugged in, and I plug two computers into the switch, will ...
16
votes
3answers
9k views

What is the purpose of a Windows Workgroup?

In Microsoft Windows, what is the purpose of a Workgroup? I understand that a Domain allows the administration of security (user names, passwords, file access, etc.) to be centralized. But what does a ...
16
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2answers
14k views

Simulating a low-bandwidth, high-latency network connection on Linux

I'd like to simulate a high-latency, low-bandwidth network connection on my Linux machine. Limiting bandwidth has been discussed before, e.g. here, but I can't find any posts which address limiting ...
16
votes
6answers
39k views

Share single iTunes library across multiple computers

I have a large (> 2TB) iTunes library of music and videos that I keep on a Drobo connected to an Airport Extreme base station so that I can access it wirelessly from my MacBook. This works great for ...
15
votes
9answers
46k views

Finding other computers on network over command line

I've got a handful of Macs on my home network, and shell access to only one of them from the outside. How can I figure out what IP address of the other machines are?
15
votes
5answers
24k views

How does Windows 7 decide which route to take if 2 connections to an internet source exist? (e.g. a Wireless and an Ethernet one to a router)

How does Windows 7 decide which route to take if 2 connections to the Internet exist? (e.g. wireless versus wired)
15
votes
1answer
33k views

What is Windows command to convert machine name to ip address and vice versa?

I need to know the ip address of another machine in a lan network. What is the Windows command for getting ip address from machine name and vice versa?
15
votes
3answers
32k views

IPv4 vs IPv6 priority in Windows 7

I have IPv6 connectivity through Hurricane Electric tunnel. Since IPv6 day this year, many services (google.com, facebook.com, etc.) enabled IPv6 on their main domains. On my Windows machine, IPv6 is ...
15
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7answers
25k views

Changing network type from Unidentified network to Private network on an OpenVPN connection

Is it possible to change the connection type in Windows 7? I have a OpenVPN connection which is identified as "unidentified network" and I do not want to apply certain rules to all unidentified ...
15
votes
4answers
5k views

Ethernet over powerline adapters - how far will the data travel?

I would like to get a pair of Ethernet over powerline adapters so I can get a better connection on my desktop than what I currently get over WiFi. My problem is that I live in a block of flats. I'm ...
15
votes
4answers
18k views

Is it possible to boot from an ISO over the network, and how?

I have a machine with a bootable ISO stored on it, and I have another blank machine which I want to install the ISO to. They're both on the same LAN (attached to the same switch). How would I go about ...
14
votes
3answers
787 views

Why is the download speed slow in the early seconds?

When you download a big enough file, you can see that in the early seconds, the download speed increases to finally reach its mean value. Why?
14
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7answers
16k views

What interesting uses for IPv6 are out there? [closed]

IPv6 is reasonably easy to setup these days via 6to4 tunneling, but once done, what does one do with it? What interesting services are out there already using IPv6 or providing exclusive features over ...
14
votes
5answers
3k views

How do I pre-wire my home right?

This seems like a good place to ask this. I'm sure many of you have done this in the past. I am getting a home built and will soon be making decisions on all the pre-wiring. I know I want to run ...
14
votes
7answers
16k views

Why is it bad to have open ports?

Here's something that has always baffled me. Why is it bad to have open ports on your computer? Assuming you don't have a virus on your computer or some other program listening to a port that may ...
14
votes
6answers
2k views

Does increasing upload or download speed reduce ping?

I have a 5 MB/s connection, but I always notice high ping when playing online games. When the network is stable (i.e. when pingtest.com reports the connection as 5 MB/s), the ping stays at 50 ms, but ...
14
votes
7answers
14k views

Ethernet and networking speeds as “500 Mbps Gigabit”?

I am quite confused with networking and speeds and such. I want to buy something so its throwing Google off - if I type in the keywords I just get websites selling the products I want, not information ...
14
votes
3answers
60k views

How do I unmap a disconnected network drive in Windows 7?

The drive is disconnected, and I'm off the network. How do I unmap the drive? This seems like it should be a simple procedure, but I'm missing something. My Google-fu is weak today...
14
votes
2answers
1k views

If two devices are emitting a wifi signal in the same frequency at the same time and reach an antenna at the same time, how can the data not overlap?

I mean, I know each packet is sent with a MAC address, but what about streaming? What happen if while the router is receiving one packet, a packet from another device arrives? How can the router ...
14
votes
4answers
12k views

sshfs mount without compression or encryption

I am a very frequent user of sshfs for mounting various disks over the network. I do however have a very small machine (with an atom processor) from which I need to mount a directory using sshfs. Is ...
14
votes
7answers
21k views

Are there netcat-like tools for Windows which are not quarantined as malware?

I used to use netcat for Windows to help track down network connectivity issues. However these days my anti-virus software (Symantec - but I understand others display similar behaviour) quarantines ...
14
votes
2answers
30k views

How to detect the speed (fast or gigabit ethernet) of a network connection over Windows command line

To troubleshoot a network problem I would like to inquire the real network "speed" for a given network adapter, which can be seen when opening the "status" of a network connection under Windows: ...
14
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4answers
12k views

Change VirtualBox DHCP to issue 192.168.x.x adresses instead of 10.0.x.x adresses?

I have a VirtualBox (v4.1.8) VM that is automatically assigned with an IP in the 10.0.x.x range via DHCP. Can I change it to use the 192.168.x.x range instead?
14
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1answer
2k views

What kind of IP address is this? (WIN-F9PTTKUMI2U:29901)

While downloading a file with μTorrent, I noticed a strange peer with an address that was not an IPv4 or IPv6 address. μTorrent showed it as WIN-F9PTTKUMI2U:29901. What kind of address is this?
14
votes
9answers
34k views

Why do I only get 300-400 Mbit/s on my 1000 Mbit/s network?

My setup is like this: Laptop <--> Router <--> Desktop They all support gigabit Ethernet. I'm using the 'iperf' TCP/IP benchmark on the laptop and desktop, and I've never gotten more than 400 ...