For questions on connecting devices together so that they can communicate with each other, as well as on networking equipment such as routers and switches.

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0answers
71 views

Vista professional 64 bit after complete the update there is no network connection

I have Vista Professional x64. I have installed it on a PC and a lot of updates have been applied and till yesterday morning everything were working fine. So I tried to install Internet explorer 9. I ...
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6answers
4k views

Problem sharing files between two Windows 7 machines

I have 3 machines. Two of them running Windows 7 Ultimate 64-bit, let's call them Windows 7-one and Windows 7-two. One is running Windows XP SP3, let's call that one Windows XP-one. I've shared ...
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1answer
762 views

Second ping within 30 seconds of the first always fails

I ping a host: $ ping 8.8.8.8 PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data. 64 bytes from 8.8.8.8: icmp_req=1 ttl=47 time=53.8 ms 64 bytes from 8.8.8.8: icmp_req=2 ttl=47 time=54.2 ms 64 bytes from 8....
3
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1answer
929 views

Transparent caching proxy for a local network

In order to save bandwidth, I have set up a caching proxy (Polipo, as recommended on another question) on a home server, and it works quite well. (Motivation paragraph; feel free to skip) I am now ...
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1answer
800 views

Can XP access HomeGroup shares if NetBIOS service is disabled on hosting Win-7 machine?

I am upgrading a small non-profit organization's computers and network. I will install Windows 7 Professional on 9 machines and Windows XP SP3 on 3 very old machines. I am interested in using ...
8
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2answers
653 views

What do the various IP addresses mean?

When I visit a website (e.g. whatismyip.com) it states that my IP address is 13.151.xxx.xxx. However, when I run ipconfig, my IP address is 192.168.0.xx for IPv4 and my DNS adress is 202.xx.xxx.xx. ...
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1answer
1k views

Restrict VirtualBox network access

I have a Windows XP VM running inside a Linux host. My Linux machine is connected through OpenVPN to the network of my company, which I do not want the Windows machine to access. A problem which I ...
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3answers
1k views

One computer on 2 networks with same IP ranges

I have two networks: Network A - 192.168.1.x with a router/gateway and cable modem Network B - 192.168.1.x with no gateway or internet acces Both subnets are 255.255.255.0. I have a computer with ...
3
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1answer
809 views

Two network connections are available to Windows 7 — which will it use?

I'm currently connected to my router both via a wired and wireless link. I have two IP addresses, one for each interface. Both point to the same gateway (my router). I'm curious, which one is Windows ...
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2answers
639 views

Wireless randomly cuts out for a few seconds

I have two laptops in front of me, running continuous pings to my gateway (router) and to google. One computer pings both targets fine and doesn't time out. The other computer, an Asus G73JW laptop, ...
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2answers
8k views

second router: access point vs. bridge mode

I have my main router running Tomato. My second router is configured as an access point using a different channel as the main router, but the same SSID/WPA2 info. All the firewall stuff, plus DHCP is ...
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1answer
2k views

Can't ping parallels win xp vm from osx

I'm not sure why, b/c I thought this was working b4, but when I have my Parallels Windows XP vm on bridged network I still can't ping the machine.. The Default Gateway is the same, and the osx and ...
2
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1answer
80 views

Multiple Servers, externally, through single IP

Let's say, I have a server which is directly connected to the internet (no firewall), and sits on 66.77.88.99 externally and internally sits on 192.168.0.1. I have my domain's records set up so that ...
1
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1answer
860 views

Bridged Ubuntu guest on VMWare Player not accessible via TCP from host only

Using VMWare Player 3.1.3 build-324285 on Windows 7 64 bits, guest is Ubuntu 10.10 with VMWare tools installed. For networking, the Ubuntu guest is bridged. Here is the problem : - ICMP work from my ...
3
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1answer
2k views

How to debug a local network from a PC that is infecting it

I want to help my dad to debug a local network with this slightly unusual issue. There is wireless network with 7 PC connected to one router and 3 smartphones, as to get basic logs, statistics, etc. ...
5
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8answers
16k views

Internet connection under Windows Vista stops working until reboot [closed]

I have a fairly clean Vista Home Premium SP1 install on my desktop. There aren't many applications installed. My Internet connection always seems to stop working after web surfing for a while - ...
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1answer
571 views

Wiring my own RJ45 sockets - issues with a paticular outlet not negotiating at 1GB

I used a tester to test the patch cables I've used. They seem to be fine. I was advised to punchdown keystone jacks on both ends of the cable then use patch cable for the final leg. I've ensured the ...
2
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1answer
184 views

remote assistance - it needs to be very selective

Windows XP - SP3 laptop Windows 7 Home Desktop I need the Windows 7 desktop to help out windows xp whenever it's needed without doing anything much on xp computer (because the person who uses xp ...
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0answers
182 views

One computer on my network won't connect to the network without a reboot

My computer is on a local network that contains about 300 PCs. NIC is not built-in (i.e. the built-in NIC doesn't work). I don't know whether my IP is assigned staticly or by DHCP. Every time my ...
0
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0answers
562 views

Slow internet data download using single connection, but fast using multiple

I recently moved in to a new apartment and the house owner is providing the internet. He has 16 Mbps connection from his ISP (Deutsche Telekom). I am only able to connect to his infrastructure via ...
0
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1answer
450 views

Netbios network naming conflict

Currently we have a server that's complaining about Netbios naming clashes with another machine on the network, after further checking into the problem we've found out that the server's vendor have ...
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5answers
5k views

How can I sniff traffic sent by POST method (on another computer)?

Suppose there is a site which has a form and it send data through POST method over http (NOT HTTPS)? I can access this website directly and also the victim's computer directly. How can i sniff what ...
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2answers
330 views

TCP Window Scale

I am searching that, how can two sides determine which scale factor will be using? In syn packets we can give a scale factor and than when two sides have the any scale factor, we can understand that ...
1
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1answer
5k views

Using Connectify with Proxy

I connect to the internet via a http tunneler which uses a proxy, Is there any way I can channel all incoming connectify connections through that particular IP and port address? . .
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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 ...
0
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1answer
93 views

IP based public addressing system

We are trying to create an IP based PA system for my institution. Our first hunch is to use an asterisk server with clients in auto-answer mode. Is there any better method, or a more apt open source ...
0
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1answer
3k views

How to share printer across two VLANS on Cisco WRVS4400N?

As the title says, we have two VLANs at the office, one for authorized users and one for guests. The first VLAN contains some resources that should be only for authorized users, but the printer should ...
4
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3answers
4k views

Pulling Cable In Existing Home — Advice? [closed]

My wife and I have just purchased a new home (built in 1999) and will be moving in after Christmas. I am considering hiring someone to pull network cabling throughout the whole house. I am going to ...
1
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4answers
235 views

Weird windows 7 networking problem

I have a strange problem with windows 7. My network connection used to work fine, then one day, all of the sudden it stopped wotking. I tryed everything possible to get it working (ipgonfig /renew, ...
9
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6answers
6k views

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. ...
0
votes
1answer
3k views

After a while downloading torrents my network card stops working properly

The situation I download happily torrents with uTorrent for a long time, maybe 12 hours. Suddenly, I notice my connection stopped working. When I check uTorrent is still downloading stuff. When I ...
5
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1answer
11k views

Packet sizes for ping and traceroute

Why is a ping packet's data length 32 while a traceroute packet's data length is 64 bytes? Is there any reason for that? Or are there any advantages for this difference?
6
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3answers
5k views

What limits WiFi speed?

What are the limiting factors that prevent access through WiFi to achieve the highest speed the radio link can provide? Assuming, there is only 1 device (the wireless one) on the network, it's ...
3
votes
2answers
2k views

Is there a high-performance local area “file sharing” protocol?

It seems to me that most network "file sharing" protocols are one or more of old, slow, and insecure. The most used protocols seem to be SMB, NFS, and WebDAV. I'm sitting here, looking at iTunes ...
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1answer
112 views

Entire top level domain won't load (.edu)

Unfortunately, I don't know much about the problem as it was relayed to be through another person. All I know is that she can't load any *.edu site, and she's running windows. Any idea where I ...
1
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1answer
275 views

Which SSH config option stops me from SSH'ing through a SSH tunnel?

I am trying to connect directly to a my work computer (work) which is only available via an outside server (outside). So, the network path is: home » outside » work Ideally, this should work: home$...
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5answers
5k views

Does the length of cat6 cable make a difference in a home network?

I have a Dlink DIR-655 router for my wired and wireless router for my home network. I have a 100ft cat6 ethernet cable. I pulled it from the router to my home server in my basement. Does the 100ft ...
0
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3answers
1k views

File copied over the network differs from original

Having moved quite large amount of data (~1TB) over the network from one storage to another, I noticed the file on target system differs from the original. Setup: PC (Windows 7 64) with Windows ...
3
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2answers
2k views

VirtualBox network configuration

I have a CentOS 6.1 virtual machine, virtualized with VirtualBox on Windows XP. This machine hosts my local development MySQL server. I'd like to find the correct network configuration, so that: my ...
0
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0answers
573 views

How to speed up the network speed of virtualbox?

My host's (ubuntu) network speed almost 1mb/s. But my virtualbox xp's network speed only about 33 kb/s. I use an NAT. How can I speedup that speed to until it matches the host's speed?
0
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2answers
555 views

Why won't my router open these ports? [closed]

I have a web service that I'm going to need to open ports for. I've used my Verizon router to open the ports. The port-checker service I use checks for games, so I'm testing my ability to open ports ...
1
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1answer
358 views

How to disable Wii updates through router filtering?

Since there is no way to disable Wii updates through the device itself, I was wondering if anybody knows what IP (or any other identifiable information) the Wii updates come from? I was thinking that ...
3
votes
1answer
6k views

Difference between NETBIOS, host name and computer name?

In windows if you go to Computer->Properties->Advanced System Settings->Computer Name, you can change the computer name, let's say from "MYCOMPUTER" to "LEDZEPPELIN". This changes the (1) computer ...
0
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1answer
1k views

WiFi network speed. No difference in wireless N and wireless G networks

I have a Cisco E3200 Wireless N dual band router and external drive with USB2 support attached to it. The drive is shared across my network. My laptop has G WiFi adapter, so it can connect with 54Mbps ...
1
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0answers
3k views

How do I remove broken miniport drivers on Windows XP?

I have a Windows XP machine with two network cards and the drivers for a third, disconnected network card installed. In addition to the virtual network stuff from VMWare Player, I was using some VPN ...
2
votes
2answers
635 views

What is wrong with my fast-network's slow-network-share(s)?

I have done extreme amounts of testing. cp, dd, rysnc, iperf, netcat, custom-dd and probably more. What I am looking at is a strong network. The iperf results below show that, and I have other data ...
1
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1answer
72 views

network: secure traffic between servers [closed]

I am trying to secure communication between serverA to serverB on port 2020 For this purpose I have separate network interface which I want to use and set up secure communication using SSL. Please ...
0
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1answer
2k views

Mac Mini connecting to Airport Extreme at only 802.11a, how to push to 802.11b/g/n?

My Mac Mini is capable of 802.11a/b/g. I have an Airport Extreme that is capable of 802.11a/b/g/n. The Mini connects at only 802.11a. It is close and has a very strong signal. How do I push the ...
2
votes
1answer
165 views

Issues with Windows IP Address vs NetBIOS name

I have Windows 7 Ultimate on my machine. I am connected through a wired network adapter to our server at work. My IP address is 192.168.2.10 and the server is 192.168.2.1. We have some shared folders ...
14
votes
2answers
11k views

Stop VPN being used on internet traffic on Win 7 [duplicate]

Possible Duplicate: How can I make the Windows VPN route selective traffic (by destination network)? How To Use Local Internet Connection To Access Internet While Still Connected with VPN I ...