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• Windows Server doesn't connect to a network share

  - by Dmitriy N. Laykom

  Windows Server doesn't connect to a network share. Network share is working. Blockquote Pinging 109.123.146.223 with 32 bytes of data: Reply from 109.123.146.223: bytes=32 time<1ms TTL=63 Reply from 109.123.146.223: bytes=32 time<1ms TTL=63 Reply from 109.123.146.223: bytes=32 time<1ms TTL=63 Ping statistics for 109.123.146.223: Packets: Sent = 3, Received = 3, Lost = 0 (0% loss), Approximate round trip times in milli-seconds: Minimum = 0ms, Maximum = 0ms, Average = 0ms net view \shareaddress Blockquote System error 53 has occurred. The network path was not found. When I connected the network share I observed this error message: Blockquote \ "Mapped disk letter" refers to a location that is unavailable. It could be on a hard drive on this computer, or on a network. Check to make sure that the disk is properly inserted, or that you are connected to the Internet or your network, and then try again. If it still cannot be located, the information might have been moved to a different location The network share was mounted via Group Policy. Perchance anyone knows how I can avoid this error? When the OS has been restored from the disk problem has been solved

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• Windows Server don't connect to network share

  - by user104775

  Windows Server don't connect to network share. Network share is work. Ping Blockquote Pinging 109.123.146.223 with 32 bytes of data: Reply from 109.123.146.223: bytes=32 time<1ms TTL=63 Reply from 109.123.146.223: bytes=32 time<1ms TTL=63 Reply from 109.123.146.223: bytes=32 time<1ms TTL=63 Ping statistics for 109.123.146.223: Packets: Sent = 3, Received = 3, Lost = 0 (0% loss), Approximate round trip times in milli-seconds: Minimum = 0ms, Maximum = 0ms, Average = 0ms net view \shareaddress Blockquote System error 53 has occurred. The network path was not found. When network share was connected, I was got a error message: Blockquote \ "Mapped disk letter" refers to a location that is unavailable. It could be on a hard drive on this computer, or on a network. Check to make sure that the disk is properly inserted, or that you are connected to the Internet or your network, and then try again. If it still cannot be located, the information might have been moved to a different location Network share mounted via Group Policy. Any ideas?

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• How to run the CPU at something like 75%?

  - by Tobias Kienzler

  My notebook is too old for me to invest into a new fan (it will simply be replaced by a new one when the final heat death occurs), but when it runs on full speed I feel like sitting in front of a vacuum cleaner with integrated cooking... I'm currently using NHC, the Max Battery mode of which let's the CPU run at 50% (~800 MHz). That's fine for most applications, and both temperature and noise remain low. However, on some occasions I need a bit more speed, more around 75% maybe. Can I set the power saving settings somehow so that the CPU won't surpass 75% of it's capability so that an acceptable compromise between power and noise is achieved? I can't set the CPU frequency in the BIOS and since on rare occasions I'd like to be able to switch to 100% without much hassling, hardware solutions like setting jumpers are no option. This answer to a similar (linux!) question mentions NHC should be able to offer these options, but for me they are all greyed out: The notebook is an Asus Z9200K, I guess NHC doesn't support its chipset enough for these advanced options.

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• Why is my connection slow?

  - by Jay R.

  I have a Dell Precision T5400 with a Broadcom 1Gb onboard NIC. For some strange reason, when I access machines on our local network, the best I can get is around 125KB/s download speed. My laptop that has a 10/100Mb NIC onboard usually gets around 300KB/s or better from the same network resource. Both machines are plugged into the same 1Gb switch which connects to our local network wall jack at 100Mb half duplex. There is also a printer plugged into the same switch at 100Mb full. The resource I'm using for the test is a 30MB zip file copied from a jetty webserver that is running as part of a cruisecontrol installation. The cruisecontrol installation is running WindowsXP with full real-time antivirus and Altiris patch management and inventory running. That stuff on its own is eating some of the download speed. I've seen the laptop reach into the multiple MB/s download speed before, but the desktop never seems to get past 125KB/s to 130KB/s. In WindowsXP, before I upgraded the driver in the desktop, it was that slow. In Fedora, it is still slow even though it appears to be using the same driver version as the upgraded Windows driver. The upgraded Windows driver is faster, but still not nearly as fast as the laptop. What gives? Any insight to improve the situation would be appreciated. Could it be that the BroadCom board just isn't that good, or the driver in linux is just not as good as the Windows one?

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• my realtime network receiving time differs a lot, anyone can help?

  - by sguox002

  I wrote a program using tcpip sockets to send commands to a device and receive the data from the device. The data size would be around 200kB to 600KB. The computer is directly connected to the device using a 100MB network. I found that the sending packets always arrive at the computer at 100MB/s speed (I have debugging information on the unit and I also verified this using some network monitoring software), but the receiving time differs a lot from 40ms to 250ms, even if the size is the same (I have a receiving buffer about 700K and the receiving window of 8092 bytes and changing the window size does not change anything). The phenomena differs also on different computers, but on the same computer the problem is very stable. For example, receiving 300k bytes on computer a would be 40ms, but it may cost 200ms on another computer. I have disabled firewall, antivirus, all other network protocol except the TCP/IP. Any experts on this can give me some hints?

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• Ethernet: network topology

  - by aix

  Consider a standard GigE network switch. In order to do the switching, presumably it needs to maintain a map of MAC addresses of all things that exist on the network to its (switch's) port numbers. How does it maintain such a map? What are the protocols involved? If I change the topology of one part of the network, does the entire network get notified or do things get discovered "lazily" (i.e. on first need)?

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• Implement 2x speed in tower of defense type game

  - by Siddharth

  I was currently developing tower of defense game and I want to implement 2x feature for my game. Game usually run with 1x speed that was normal speed of the game. Here what 1x and 2x mean : 1x - mention normal speed of the game, 2x - mention the game object moves with double speed means user experience the fast game play. I want to implement such functionality for my game. The functionality that I want contains in the game Medieval Castle game that was available in the market. https://play.google.com/store/apps/details?id=com.nova.root&feature=search_result#?t=W251bGwsMSwxLDEsImNvbS5ub3ZhLnJvb3QiXQ.. The screen shot also shows the 1x and 2x button in that game. I think for 2x speed of the game I have to increase the speed of each object that were in the game. So any member please help what to do for that implementation. Only idea become enough for me.

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• Security: Managing network shares remotely on Ubuntu?

  - by Industrial

  Hi everyone, I am about to setup a home network server running Ubuntu Server and I'm currently a bit worried about how to handle network shares and permissions in a good way. After working a bit lately with Netgears ReadyNAS's units, I have become really spoiled with how easy it was to set up network shares and giving a specific user different levels of network access to a specific share (forbidden access, read, read/write). How would I accomplish the same with my Ubuntu server through SSH? Thanks a lot

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• Network Diagramming software options?

  - by Zak

  I've used The Dude to map my network, but I can only export the network map as a graphics file. I've also used Dia and Vision to manually diagram portions of my network. Does anyone out there have a solution where I can do automatic network mapping using a tool like "The Dude", then pull that file over to a manually editable format for cleaning up and/or enhancing in Visio or Dia?

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• Security: Managing network shares remotely on Ubuntu?

  - by Industrial

  Hi everyone, I am about to setup a home network server running Ubuntu Server and I'm currently a bit worried about how to handle network shares and permissions in a good way. After working a bit lately with Netgears ReadyNAS's units, I have become really spoiled with how easy it was to set up network shares and giving a specific user different levels of network access to a specific share (forbidden access, read, read/write). How would I accomplish the same with my Ubuntu server through SSH? Thanks a lot

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• NIC: Changing Link Speed & Duplex to Full Duplex Is Drastically Slower

  - by rism

  I have an old Win Xp box with a 100 PRO/100 VE NIC and connecting to a Win 7 box with gigabit NIC via an ASUS gigabit router and peer to peer. I was getting 76% network utilisation on the XP machine using AUTO as the value for Link Speed and Duplex which is fine. But I decided to see what would happen if i selected Full Duplex 100Mbps on the XP box. I thought at worst it would be as good as auto detect since the Win 7 box it's transferring to is faster. Instead network utilisation dropped to 0.12% (as in a 10th of a percent) and the transfers just timed out. No biggie to reverse back to Auto but my question is why is full duplex such a dog? Im not "stuck" but just dont understand. There are only 2 machines here connecting through a router so i cant see how that would cause alot of collisions etc (if thats the problem).

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• What are your recommended tools and frameworks for network development on Linux?

  - by Vivek Sharma

  What are your favourite network-tools, which you use to troubleshoot or design (as in conceptualize) your network-application code. Ethereal/Wireshark Nmap any particular simulators (e.g. ns) any special purpose sniffer any particular frameworks, (e.g. iptables) I am looking at must have, and good/advantage to have tools/framework in ones profile/skill set. I think Wireshark and Nmap are must haves.

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• Need Recommendations: Network Software and Hardware Setup for small firm

  - by Rogue

  Will be starting a small graphics design firm soon, with 20 employees. Therefore need software to manage the network. Have bought a bulk license of Windows 7. I have a spare computer which can act as a server if necessary, but its an ancient Dell machine (Pentium-III). If required I would purchase an extra machine, but would like to avoid unnecessary costs at start up. Following are the main functions that I would like to perform: Need to monitor\control network traffic and internet usage, restrict access to certain websites Alerts when access to certain software's, and when trying to tamper with privileges Ability to view desktops of any computer at any given time Limit access to certain hardware like USB ports,etc Limit access to folders on the computer Log/Report of all actions including keystrokes performed on any computer Local Network chat and talk client Collaboration and Work logs Any Software available to do all of the above and also any additional hardware required besides network switches, network card's and CAT5e cables. Any other recommendations besides the above mentioned hardware setup

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• Sharing Internet Connection using an ad-hoc wifi network

  - by Apps

  I've installed a WiFi Adapter in my Windows XP PC and created an ad-hoc network. I am able to connect to the network through my iPod Touch. On the same PC I have a LAN connection to the Internet. I need to share this internet connection to my iPod too. The problem is Windows did not assign an IP Address (even though assign IP address automatically is selected) to this WiFi network. When I tried to share the Internet connection, I got a message that LAN Network Adapter's IP address will be changed to 192.168.1.1. But if this happens I will not be able to connect to other devices/servers in my LAN Network. How do I share the Internet connection through WiFi?

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• Limited connection whenever I connect to a Wi-Fi network outside the company

  - by anderZubi

  Whenever I connect my work laptop to a wireless network outside of my company, the connection shows as Limited, and there is no internet access. I have tried several times by disabling/enabling the network adapter, restarting the computer... without success. Sometimes, after a while, without taking any action, it shows fine, and I have internet access. But can pass 2 hours before this happens. My computer is under a domain network, but I don't think that's the problem, because I can successfuly connect other computers belonging to same domain to other networks. I'm running Windows 8 Pro and my network adapter is the following: Qualcomm Atheros AR9285 Wireless Network Adapter Any idea of which is the problem and how to solve it?

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• Trouble accessing network drives in Windows 7

  - by Warlax

  Hi, Recently purchased a LaCiE network drive. Connected it to my router, configured it, added a user for myself. Installed the "Network Assistant" that came with it - no problem. Went to My Computer Network, found the network drive - was prompted for a login/password to see the contents, types \user and password (leading slash to get rid of DOMAIN) and accesses contents. There is one open share that I can access/mount without problem and there's another share with my user name as set-up via the network drive's web-based config. Double-clicked on that, prompted again. user/password doesn't work! It says I have no permissions but the user/pass combination is PERFECT. Some Windows Vista posts talk about a Local Security Policy menu - but that's nowhere to be found. Any ideas? (Windows 7 Professional BTW).

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• Can't ping other machines in my network

  - by judahgabriel

  I've got 3 machines on my network, all running Windows 7. None of them can ping each other, can't see each other on the network, can't see shares, can't remote desktop, can't see any homegroups. They are all on the same workgroup. They are all connected to the same wireless, WPA2 secured network. They all worked together nicely until I added a password to my wireless network. After that, and after reconnecting all the machines to the password-protected network, they can't see each other. Any ideas what could be wrong?

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• How to connect externally to local network from local network?

  - by ventrilobug

  I have this weird problem with a Ventrilo server software running in my linux machine. If I connect the server inside my local network, messages keep lagging etc. But users joining the server outside my network do not experience any problems. So the question is, how can I trick the software inside the local network to make me appear as joining from external network. Do I need some proxy running in some external network machine? Does someone offer this kind of service? All the problems started when I changed my router so I guess it has something to do with the new router, but I haven't found a solution by changing settings in my router so I try to fix this in some other way.

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• Why do I have only incoming traffic when copying from network source to network destination?

  - by mxp

  I have a VirtualBox VM that is located on a network share of my NAS. When I copy something from the VM's disk onto another of the NAS' network shares (so the data is visible outside the VM), the Windows 7 Task Manager shows only incoming network traffic (yellow graph). It's as if the data was only received but never sent over the network. I verified that the data arrives on the other network share. As I understand it, the data flow looks like this: +-NAS--------+ +-Win7 PC (VM Host)-+ | Share1(VM)-|>---->|-+ | | | | | | | Share2 <---|<----<|-+ | +------------+ +-------------------+ If it was like this, I would see incoming and outgoing traffic, right? What am I not getting here?

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• Network and log monitoring and vulnerability scanning

  - by user137799

  I am trying to find out if there is any application or service in UNIX that will - 1. Monitor network interfaces for bandwidth usage 2. When network flaps occur send out a e-mail. 3. When duplicate mac-addresses or loop occurs in network - send out alerts. 4. Do a network vulnerability scan and be able to detect utorrent application on our network. Need to know which linux distribution will be best to support that specific application Thanks

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• How to Assign a Static IP Address in XP, Vista, or Windows 7

  - by Mysticgeek

  When organizing your home network it’s easier to assign each computer it’s own IP address than using DHCP. Here we will take a look at doing it in XP, Vista, and Windows 7. If you have a home network with several computes and devices, it’s a good idea to assign each of them a specific address. If you use DHCP (Dynamic Host Configuration Protocol), each computer will request and be assigned an address every time it’s booted up. When you have to do troubleshooting on your network, it’s annoying going to each machine to figure out what IP they have. Using Static IPs prevents address conflicts between devices and allows you to manage them more easily. Assigning IPs to Windows is essentially the same process, but getting to where you need to be varies between each version. Windows 7 To change the computer’s IP address in Windows 7, type network and sharing into the Search box in the Start Menu and select Network and Sharing Center when it comes up.   Then when the Network and Sharing Center opens, click on Change adapter settings. Right-click on your local adapter and select Properties. In the Local Area Connection Properties window highlight Internet Protocol Version 4 (TCP/IPv4) then click the Properties button. Now select the radio button Use the following IP address and enter in the correct IP, Subnet mask, and Default gateway that corresponds with your network setup. Then enter your Preferred and Alternate DNS server addresses. Here we’re on a home network and using a simple Class C network configuration and Google DNS. Check Validate settings upon exit so Windows can find any problems with the addresses you entered. When you’re finished click OK. Now close out of the Local Area Connections Properties window. Windows 7 will run network diagnostics and verify the connection is good. Here we had no problems with it, but if you did, you could run the network troubleshooting wizard. Now you can open the command prompt and do an ipconfig  to see the network adapter settings have been successfully changed.   Windows Vista Changing your IP from DHCP to a Static address in Vista is similar to Windows 7, but getting to the correct location is a bit different. Open the Start Menu, right-click on Network, and select Properties. The Network and Sharing Center opens…click on Manage network connections. Right-click on the network adapter you want to assign an IP address and click Properties. Highlight Internet Protocol Version 4 (TCP/IPv4) then click the Properties button. Now change the IP, Subnet mask, Default Gateway, and DNS Server Addresses. When you’re finished click OK. You’ll need to close out of Local Area Connection Properties for the settings to go into effect. Open the Command Prompt and do an ipconfig to verify the changes were successful.   Windows XP In this example we’re using XP SP3 Media Center Edition and changing the IP address of the Wireless adapter. To set a Static IP in XP right-click on My Network Places and select Properties. Right-click on the adapter you want to set the IP for and select Properties. Highlight Internet Protocol (TCP/IP) and click the Properties button. Now change the IP, Subnet mask, Default Gateway, and DNS Server Addresses. When you’re finished click OK. You will need to close out of the Network Connection Properties screen before the changes go into effect.   Again you can verify the settings by doing an ipconfig in the command prompt. In case you’re not sure how to do this, click on Start then Run.   In the Run box type in cmd and click OK. Then at the prompt type in ipconfig and hit Enter. This will show the IP address for the network adapter you changed.   If you have a small office or home network, assigning each computer a specific IP address makes it a lot easier to manage and troubleshoot network connection problems. Similar Articles Productive Geek Tips Change Ubuntu Desktop from DHCP to a Static IP AddressChange Ubuntu Server from DHCP to a Static IP AddressVista Breadcrumbs for Windows XPCreate a Shortcut or Hotkey for the Safely Remove Hardware DialogCreate a Shortcut or Hotkey to Eject the CD/DVD Drive TouchFreeze Alternative in AutoHotkey The Icy Undertow Desktop Windows Home Server – Backup to LAN The Clear & Clean Desktop Use This Bookmarklet to Easily Get Albums Use AutoHotkey to Assign a Hotkey to a Specific Window Latest Software Reviews Tinyhacker Random Tips HippoRemote Pro 2.2 Xobni Plus for Outlook All My Movies 5.9 CloudBerry Online Backup 1.5 for Windows Home Server Nice Websites To Watch TV Shows Online 24 Million Sites Windows Media Player Glass Icons (icons we like) How to Forecast Weather, without Gadgets Outlook Tools, one stop tweaking for any Outlook version Zoofs, find the most popular tweeted YouTube videos

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• Troubleshooting Network Speeds -- The Age Old Inquiry

  - by John K

  I'm looking for help with what I'm sure is an age old question. I've found myself in a situation of yearning to understand network throughput more clearly, but I can't seem to find information that makes it "click" We have a few servers distributed geographically, running various versions of Windows. Assuming we always use one host (a desktop) as the source, when copying data from that host to other servers across the country, we see a high variance in speed. In some cases, we can copy data at 12MB/s consistently, in others, we're seeing 0.8 MB/s. It should be noted, after testing 8 destinations, we always seem to be at either 0.6-0.8MB/s or 11-12 MB/s. In the building we're primarily concerned with, we have an OC-3 connection to our ISP. I know there are a lot of variables at play, but I guess I was hoping the experts here could help answer a few basic questions to help bolster my understanding. 1.) For older machines, running Windows XP, server 2003, etc, with a 100Mbps Ethernet card and 72 ms typical latency, does 0.8 MB/s sound at all reasonable? Or do you think that slow enough to indicate a problem? 2.) The classic "mathematical fastest speed" of "throughput = TCP window / latency," is, in our case, calculated to 0.8 MB/s (64Kb / 72 ms). My understanding is that is an upper bounds; that you would never expect to reach (due to overhead) let alone surpass that speed. In some cases though, we're seeing speeds of 12.3 MB/s. There are Steelhead accelerators scattered around the network, could those account for such a higher transfer rate? 3.) It's been suggested that the use SMB vs. SMB2 could explain the differences in speed. Indeed, as expected, packet captures show both being used depending on the OS versions in play, as we would expect. I understand what determines SMB2 being used or not, but I'm curious to know what kind of performance gain you can expect with SMB2. My problem simply seems to be a lack of experience, and more importantly, perspective, in terms of what are and are not reasonable network speeds. Could anyone help impart come context/perspective?

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• Need for explanation: NetBIOS over TCP/IP on VMware network adapter disturbs access to network share

  - by gyrolf

  Some time ago nearly all workstations in our team (Windows XP SP2) exhibited intermittend but frequent delays when accessing shares on the network. Typically the first access to a share which hadn't been accessed for some time resulted in a nearly frozen workstation for up to 30 seconds. Then everything started working fine again. Using TCPView from Sysinternals I saw that during this delays there was a connection to the netbios-ssn port on the file server which was in state SYN_SENT. First try: Disable NetBIOS over TCP/IP for the intranet network adapter. Problem solved, but I didn't like to manipulate our centrally managed network configuration for the intranet. Second try: Disable NetBIOS over TCP/IP only for the VMWare network adapter (VMNet1 used for host only communications). Problem solved again! My questions: Why does NetBIOS over TCP/IP on one network adapter disturb NetBIOS over TCP/IP on another network adapter? Is this problem specific to VMWare network adapters? Has anybody else seen this phenomen? Additional information: VMWare Workstation version 6.0.3 At the time I started seriously analysing the problem it was no more possible to find out what had been changed to our systems at the time the problems started.

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• How do I stop my ethernet network connection from dropping?

  - by Sean Hill

  My ethernet-based network connection doesn't stay up consistently. I'm running a ping against the gateway and it will: Work for a minute Freeze, time out, or give multi-second response times Repeat If it's stuck and I disable/enable networking through the network manager applet everything will work fine again for a minute. After 280 packets transmitted I'm getting 41% packet loss. I've tried a different cable and connection to the gateway but this had no effect. The distance to the gateway is just about 3 feet. Seems to work fine if I switch over to Windows, but Ubuntu is my main OS and I can't even use it right now as I depend on the network. My setup... OS: Ubuntu 11.04, dual-booting Windows 7 Mobo: Gigabyte Z68X-UD4-B3 CPU: Intel Core i7 2600K Edit A little clarification... Network Manager is still showing me as connected, but I am unable to reach to gateway or anything beyond. At no point does NM suggest the connection is lost and calling ifconfig shows that I still have an IP address. I tried connecting to a different gateway with a different cable and the same problem arises. As requested: lspci | grep -i eth 07:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 06) dmesg | tail -f [ 14.024709] EXT4-fs (sda5): re-mounted. Opts: errors=remount-ro,commit=0 [ 14.026443] EXT4-fs (sda7): re-mounted. Opts: commit=0 [ 14.176101] hda-intel: IRQ timing workaround is activated for card #2. Suggest a bigger bdl_pos_adj. [ 23.917731] eth0: no IPv6 routers present [ 726.109697] r8169 0000:07:00.0: eth0: link up [ 733.169494] r8169 0000:07:00.0: eth0: link up [ 753.930119] r8169 0000:07:00.0: eth0: link up [ 880.787332] r8169 0000:07:00.0: eth0: link up [ 1159.161283] r8169 0000:07:00.0: eth0: link up [ 1406.623550] r8169 0000:07:00.0: eth0: link up Edit @roland-taylor: Network is always available under Windows. Pings do not timeout, applications do not complain of no network availability, large downloads are not interrupted or slowed.

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• Need for explanation: NetBIOS over TCP/IP on VMware network adapter disturbs access to network share

  - by gyrolf

  (Moved here from StackOverflow) Some time ago nearly all workstations in our team (Windows XP SP2) exhibited intermittend but frequent delays when accessing shares on the network. Typically the first access to a share which hadn't been accessed for some time resulted in a nearly frozen workstation for up to 30 seconds. Then everything started working fine again. Using TCPView from Sysinternals I saw that during this delays there was a connection to the netbios-ssn port on the file server which was in state SYN_SENT. First try: Disable NetBIOS over TCP/IP for the intranet network adapter. Problem solved, but I didn't like to manipulate our centrally managed network configuration for the intranet. Second try: Disable NetBIOS over TCP/IP only for the VMWare network adapter (VMNet1 used for host only communications). Problem solved again! My questions: Why does NetBIOS over TCP/IP on one network adapter disturb NetBIOS over TCP/IP on another network adapter? Is this problem specific to VMWare network adapters? Has anybody else seen this phenomen? Additional information: VMWare Workstation version 6.0.3 At the time I started seriously analysing the problem it was no more possible to find out what had been changed to our systems at the time the problems started.

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