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

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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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5answers
15k 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)
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3answers
877 views

What do the numbers used in a IPV6 address mean?

I am trying to understand IPV6. I have a server with the following IPV6 address: 2607:f750:0:3f::f59. I don't understand what the numbers mean. It looks totally different from an IPV4 address. ...
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3answers
11k views

How to share CPU or RAM?

In networking we share File(Disk Driver) or Databases. But how can we share CPU or RAM over the network.
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3answers
24k views

What's a loopback-address? I.e. 127.0.0.1

What is a loop-back address? 127.0.0.1 is a loop-back address, but what does this even mean? Please be very descriptive and give an example, as I'm having a hard-time understanding this. Thank You
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6answers
3k views

Unblockus.com: how does it work?

I am physically located in Japan but am a United States citizen serving on a U.S military installation so I'm "technically" in the United States. When I go to websites, for example www.google.com, I ...
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3answers
41k views

Why does my Internet slow to a crawl unless I reboot my router every few days?

A few weeks ago, I noticed that my Internet connection had slowed down to a crawl. I waited a few days hoping it would go away on its own, but it didn't get better. So I asked this question about how ...
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6k views

What is the maximum number of IPs that can be assigned to a given computer?

I really need to know this for a linux server, but since it also applies to client OSes, I figured the question should be posed here instead of server fault.
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2answers
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Should uploading a file on DSL kill the download speed?

I have the 20,127/893 Kbps service through CenturyLink DSL. I've ran speed test and it typically reports speeds close to that. Except whenever I upload something substantial. Like a video file to ...
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7answers
13k 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
667 views

Can I hide a wireless network

Is there any way to "not advertise" my wireless network to the world in Windows XP SP3? I'm not relying on this for intrusion security. I've read the article. My wireless network has WPA2 with a ...
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3answers
560 views

Crimping CAT6 cables results in lower bandwidth than expected

I'm trying to make my own CAT6 cables, because I need specific lengths. I've managed to create 2 "working" patch cables, but when I hook them up to my cable modem, both of them take a fairly long ...
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How do I get rid of the VMware “Unidentified Networks” in Windows Vista and 7?

After installing VMware in Windows Vista or 7, there are two public networks that can't be identified, but upon further inspection are virtual networks created by VMware. The problem is when you're on ...
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3answers
1k views

Does Windows take care of closing sockets when processes exit?

I've read up this question about Linux, Can a port be bound when the process has terminated? Linux appears to clean up after processes exiting, and leaving open sockets. I was wondering if there's any ...
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2k views

Is testing Cat5 cable using a testing device necessary if I have verified connectivity with a computer?

I'm running some CAT5 cable around the house and this is the first time I've needed to build/terminate my own cables. I hooked up the cables to a computer and router and was able to reach the router ...
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33k views

Is there a good DNS server I can install on Windows 7 for a LAN? [closed]

I have a few computers on my LAN, and now I'm getting tired of remembering the IP addresses all the time, so I would like to start using DNS names on my LAN. I have a heterogeneous network with ...
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4answers
5k views

Where can I find an unswitched ethernet hub? [closed]

Back when I was just getting into networking, ethernet hubs were common, and switches were a fancy, expensive alternative. Then the price of switches came down so much that hubs became pretty much ...
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4answers
650 views

How to put two subnets next to each other?

I've been using this calculator http://www.subnet-calculator.com/cidr.php, and I'm trying to figure out how to put two different subnets next to each other. For example, I want to have a /27 subnet ...
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1answer
13k 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 ...
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8answers
12k views

How to Transfer Audio Output from Mac OS X to Ubuntu via a Network?

Is it possible to somehow tap in to sound output and send it via network to another machine. Formats probably are incompatible, but I would appreciate even on some information on how to tap in to ...
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6answers
22k views

Can I use 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. ...
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2answers
7k views

Disabling networkmanager for a specific interface

I'd like to do some experimentation with hostap without disabling my primary wireless interface. How do I tell networkmanager to keep its hands off a specific interface or interfaces while allowing it ...
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5answers
4k views

Why can a network address not be a valid host address?

So... I have studied for CCNA and such and been working with IP networking at the least the past 8 years or so. I have always seen and been told that the network address for a subnet is not a valid ...
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2answers
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how to access samba on a guest Linux behind the VirtualBox NAT?

On my laptop, I'm running Ubuntu 9.10 under WinXP using VirtualBox 3.1.2. I want a setup where: The guest can freely access the internet. The host can access the guest files via Samba. The setup ...
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6answers
4k views

How to make windows task manager to show network usage?

I found that Windows 8 Task manager does not show network usage correctly: As you see, my torrent client downloads at a speed of 1 Mb/s, while Windows shows zero. All adapters are disabled except ...
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1answer
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Share Truecrypt container

is it possible to put a truecrypt container on a net share and access/mount it form multiple machines (windows) at the same time? I fear that if both would write the file could be corrupted.
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Export NFS path containing “-” (dash)

I'm in a bit of a pinch with NFS exports file. Specifically, I can't find a way to export a directory containing "-" in the path name. Manual (exports(5)) states: Also, each line may have one or ...
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1answer
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How can I force certain applications to use specific network connections?

Let's say I have two active network connections that let me out to the internet. I want certain applications to only use Network Connection 1, while some others should use Network Connection 2. Is ...
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2answers
2k views

Options for bandwidth management on a shared internet connection

The premise: Rural location, not many options for high-bandwidth internet connections. The fastest by far is Satellite internet, but it's expensive (both equipment and monthly cost, and has latency ...
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3answers
955 views

Strange network problems on OS X

The strange problems I am having occurred 3 times now with a little over 1 month in between. Suddenly I am losing the ability to do some network related activities, but not all. When it happens, ...
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3answers
3k views

How to setup 2 PC computers for file sharing with a crossover cable?

I have two PC computers and I want to share files between them with a crossover Ethernet cable. I have been playing with different network configurations back and forth but I can't quite get it to ...
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6answers
508 views

How do you protect your computer from Live CD's?

Linux has grown in popularity in the past few years. Many more people are using Live CD's now than they were say 3 years ago. And with this comes a new problem for network admins. How do you stop a ...
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What do the different formats for network addresses indicate?

I've seen the following forms for network addresses: 10.1.1.0 172.16.1.0 192.168.1.0 I usually see 192.168.1.0 for my home network address. Sometimes I've seen the other two forms listed above. ...
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How does the ISP determine the correct speed for my Internet plan?

I've got an Internet plan with a connection speed of 512 Kbps. That's fine, but my question is: why do I get 499 Kbps on the Speed Test? The speed won't go beyond 520 kbps at the maximum level and ...
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3answers
863 views

Can modern switches act like hubs?

I've been trying to find a hub, specifically for the packet broadcast characteristic. I'm troubleshooting a NAS behind a NAT router and want to look at the traffic arriving on the wire and this seems ...
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2answers
808 views

Why is sudo required to start up a webserver on a given ip:port?

I'm setting up a Python-based webserver on my Debian box. Setup: The Debian OS is VM based, but I've switched the VirtualBox from NAT to Bridged. IP of the VM setup = 192.168.1.7 (per my router's ...
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Isn't localhost simply 127.0.0.1 on Mac OS X 10.7 (Lion)?

I tried telnet localhost on Mac OS X Lion, and this is the output I got. Trying ::1... telnet: connect to address ::1: Connection refused Trying 127.0.0.1... telnet: connect to address ...
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4answers
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Obtaining a DHCP IP address if static address is not available

I have seen some questions that are similar to my problem but not a good solution. Ex. User has a laptop and has a static IP address at the office. They also take the laptop off site where they also ...
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4answers
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Maximum/ ideal length of ethernet cable?

What is the maximum and/or ideal length of an ethernet cable? Is there a distance that data cannot be transferred over an ethernet cable, say over X number of feet?
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How can I change the binding order of network adapters in Windows 7?

The end goal here is that I am trying to install an Oracle 10g server on my Windows 7 x64 dev box. I use DHCP, and the Oracle installer is throwing up this warning: Checking Network Configuration ...
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Samba+Windows: Allow multiple connections by different users?

I have a machine running Ubuntu with Samba that I use to share stuff with my family's Windows machines in our local network. Currently they access a share for movies/music/etc with one user. I want ...
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2answers
593 views

How does the internet really work? [closed]

There is much information I have seen on TCP/IP protocols/layers, DNS, LANs, VPNs, NAT schemes, SSL/TLS/etc., and the like, which are, I'd say, are more "user-facing" aspects of the way the internet ...
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690 views

Why does encryption not destroy the way networks work?

I've a very basic understanding of how encryption works. My knowledge insofar is that of CCNA discovery level on the CISCO courses (along with a few other things such as Steve Gibson and Leo Laporte ...
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3answers
2k views

How is the MAC address on a computer determined?

While imaging some computers today, I started to wonder... what if two LAN MAC addresses on two different computers matched?... That would cause some problems. I later came to understand that the MAC ...
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5answers
5k views

How do determine how much bandwidth a process is using in Linux

On occasion I see my bandwidth usage using gnome-system-monitor going up to 300kbit/s. I just can't figure out what is causing it. I want to know what process or program in using my network like that? ...
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How can I find out who is connected to my wireless router? (Linksys WRT54g)

This seems like it would be obvious, but I can't find it anywhere on the screens provided when I log into my wireless router. Maybe I'm just missing something obvious here, but I thought I'd take the ...
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1answer
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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: ...
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3answers
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What happens when you connect 100Mbps system to 1000Mbps network with all Giga devices?

What happens when I do not turn on Auto Negotiation, force my MAC and PHY as 100Mbps, but instead connect (say by mistake) to a 1000Mps network (say all devices in that LAN runs at Giga Speed)?
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Does 1 Gbit/s port in full-duplex mean 1 Gbit/s send and 1 Gbit/s receive?

I'm figuring out the best router for me based on their performance. When you have a 1 Gbit/s port in full-duplex, does that mean you can send 1 Gbit/s and receive 1 Gbit/s at the same ...
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6answers
1k views

30 Laptops, 1 Router?

I need to connect 30 15" Macbook Pros via a wireless network. Initial tests with a Linksys/Cisco WRT54G v6 indicate that it tops out at 10 devices simultaneously, and any further connection attempts ...