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  • 1 Computer Pulls Wrong DNS Every Morning

    - by bradenkeith
    One of my users takes his laptop home, connects to his internal network fine. He brings it in every morning and since Monday - every morning it pulls the wrong DNS every time. It pulls 1 DNS: 192.168.1.1 which is the router. The DNS are external IPs. I have several users that take their laptops home and connect to other networks - what could cause this anomaly? He's booting up when he comes in the office and a simple ipconfig /release /renew fixes the issue.

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  • Can't reach only certain websites from my Wifi (with macbook and iphone)

    - by mellin
    I can't access certain websites neither from my macbook nor from my iphone when connected to my Wifi. The same website can be opened from another windows computer connected to the same Wifi. This is what happens when I try to ping it: PING ilpost.it (151.1.175.113): 56 data bytes Request timeout for icmp_seq 0 Request timeout for icmp_seq 1 Request timeout for icmp_seq 2 ... And when I try to traceroute it: host-001:~ j$ traceroute www.ilpost.it traceroute to ilpost.it (151.1.175.113), 64 hops max, 52 byte packets 1 vodafonedslrouter (192.168.1.1) 2.965 ms 0.743 ms 0.745 ms 2 * 2.96.54.77.rev.vodafone.pt (77.54.96.2) 12.076 ms 10.871 ms 3 77.41.30.213.rev.vodafone.pt (213.30.41.77) 14.145 ms 10.693 ms 11.960 ms 4 85.205.11.49 (85.205.11.49) 9.658 ms 8.946 ms 9.085 ms 5 85.205.13.105 (85.205.13.105) 57.497 ms 57.621 ms 48.080 ms 6 188.111.129.17 (188.111.129.17) 49.483 ms 51.338 ms 48.852 ms 7 85.205.25.174 (85.205.25.174) 47.891 ms 49.219 ms 47.821 ms 8 * * * 9 * * * 10 * * * 11 * * * I've flushed my DNS cache but nothing changed. This is quite dramatic as it seems to depend on 85.205.25.174 hop and don't know how to avoid it. Any suggestions? I add that 3 days ago everything worked fine. Then it has stopped.

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  • Can't reach only certain websites from my Wifi (with macbook and iphone)

    - by trampj
    I can't access certain websites neither from my macbook nor from my iphone when connected to my Wifi. The same website can be opened from another windows computer connected to the same Wifi. This is what happens when I try to ping it: PING ilpost.it (151.1.175.113): 56 data bytes Request timeout for icmp_seq 0 Request timeout for icmp_seq 1 Request timeout for icmp_seq 2 ... And when I try to traceroute it: host-001:~ j$ traceroute www.ilpost.it traceroute to ilpost.it (151.1.175.113), 64 hops max, 52 byte packets 1 vodafonedslrouter (192.168.1.1) 2.965 ms 0.743 ms 0.745 ms 2 * 2.96.54.77.rev.vodafone.pt (77.54.96.2) 12.076 ms 10.871 ms 3 77.41.30.213.rev.vodafone.pt (213.30.41.77) 14.145 ms 10.693 ms 11.960 ms 4 85.205.11.49 (85.205.11.49) 9.658 ms 8.946 ms 9.085 ms 5 85.205.13.105 (85.205.13.105) 57.497 ms 57.621 ms 48.080 ms 6 188.111.129.17 (188.111.129.17) 49.483 ms 51.338 ms 48.852 ms 7 85.205.25.174 (85.205.25.174) 47.891 ms 49.219 ms 47.821 ms 8 * * * 9 * * * 10 * * * 11 * * * I've flushed my DNS cache but nothing changed. This is quite dramatic as it seems to depend on 85.205.25.174 hop and don't know how to avoid it. Any suggestions? I add that 3 days ago everything worked fine. Then it has stopped.

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  • Virtualbox share guest (windows xp) printer to host(linux)

    - by M0E-lnx
    I have a weird situation. I own a printer that has 0 support in linux, but of course, it works in windows. So I have installed VirtualBox 3.1.2 with guest additions to provide access to my usb devices. I have successfully setup the printer and the guest os can print fine. Now, the question is: Is there any way to make this printer accessible to the host OS? I noticed that the guest OS takes an ip address of 10.0.2.15, but when I try to ping that address from the linux host, it goes nowhere. No response. Has anyone here done this before? can anyone think of a way to do this?

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  • Computers on network crashing

    - by Phil Cross
    We have recently upgraded our network to Windows 7 clients with Windows server 2008 servers. The upgrade was completed by the end of September and until now has been fine (apart from the minor bugs). Recently (within the last 2 weeks) we've notice all computers on the network (around 1000) start to slow down to the point their unusable. It starts at about 08:45 and finishes at 09:15. Because of this, we think something may be broadcasting across the network. This happens every day, between these times. I cant use my computer at all at the slowdown peak, and looking at task managers performance graphs, Physical memory is hovering around 35% and CPU usage is at 0-10% (idle) yet still crashing. I've looked on DHCPs server log and cant see anything which stands out. The only change we made prior to the slowdown was installing adobe CS6 on some computers, however the slowdown affects computers without CS6. We have 2 physical machines, each with around 5-7 virtual machines running on them with ample memory. Does anyone have any suggestions as to what we can do to narrow down whats causing the crashes? Any help, suggestions or advice would be appreciated.

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  • Juniper Network Connect (VPN) on Windows 7

    - by Virat Kadaru
    My company uses Juniper networks for vpn access. I am unable to get the juniper network connect client to work on windows 7 64-bit. It used to work before but after I formatted my system it gives the following error every time I start the vpn client If I check the logs I see this error The Juniper Network Connect Service service is marked as an interactive service. However, the system is configured to not allow interactive services. This service may not function properly.

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  • Network randomly drops

    - by user147661
    I have a VPS, ubuntu server 12.04 and for unknown reasons the network connection drops and I have to access my vps via the console and ifdown eth0 and ifup eth0. This brings the connection back up from about a few seconds to a few hours. I have run tail -F /var/log/syslog to monitor the log to see what happens at the point of drop and there is nothing unusual. The vps is running under virt-manager and the hardware is set to virtio. I have had linux friends look at my vps and they are unsure of what is the cause.

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  • Static IP address on Wi-Fi at work and dynamic at home?

    - by Jason Shultz
    I need the laptops at my office to have a static IP address for security purposes and identification. However, some employees take their laptops home in the evening. If I have the Wi-Fi configuration set to use a static IP address, how can they have a dynamic IP address at home? The laptops are using Windows Vista and Windows 7.

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  • Interconnection between 2 computers in different networks.

    - by cripox
    Hi, What I want is to connect 2 computers (work and personal) primary for using a software KVM (Input Director or Synergy). Transferring files between them would be a plus. The main issue is that the work computer is in a secured enterprise network, and my personal computer is using a 3G+ modem for Internet access. On the work computer I do not have Internet access (only local network). I want to somehow connect them without to mess up either networks. I want my personal computer to not be seen in the work network. Is it possible? Suggestions: - use a simple UTP cable to connect the 2 computers with each other. Can they each be in both 2 networks without issues? - use some kind of usb cable, if exists

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  • Level 3 Communications Monitoring

    - by thursdasy
    Does level 3 Communications offer any type of map of current network status? It seems our connection here is getting high latency through their network. Also what is the experience asking them questions about if one of their appliances is malfunctioning or being overloaded because you are receiving bad latency in their network?

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  • Internet keeps connecting and disconnecting

    - by OmerPT
    I have a PC running 32bit Windows 7 Professional. My wireless internet card is Edimax EW-7128G, it is inside my computer case and it is connected to an antenna. My problem is: I have a wireless connection to my router, the signal is fine and it's not slow or anything, but it just keeps disconnecting every 30 seconds or so, then connects back, then it disconnects, then connects back and so on. This is new - it only started about a week ago, everything worked just fine until then. I know it's not a problem with the router because: Other computers can connect to it easily and they work just fine, no disconnections (My phone too). I know it's not a problem with the computer or the wireless card itself because: I have Ubuntu installed side-by-side with my Windows, and when I switch to Ubuntu the internet works great. This caused me to think it's probably a problem with the wireless card drivers installed on windows (Ubuntu auto-installed them, I installed them manually on windows): I tried uninstalling them, and then installing them back again, sadly that didn't help. I'm kind of lost here - can anyone think of anything else I should try? Thanks :)

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  • Configuring two subnets with two NICS. Access from a NAS to the internet

    - by archipestre
    I am having trouble configuring my NAS. I have a DSL router with WIFI (192.168.1.1) in my flatmates room. In my room I have a server with two NICS: 1) wlan0 (192.168.1.2) that connects to the DSL router via wireless 2) em1 (192.168.0.1) that connects to the NAS (192.168.0.20) with a crossover cable. I have Fedora 17 and I have enable packet forwarding. My IP configuration is as follows: WLAN0 inet 192.168.0.1 netmask 255.255.255.0 broadcast 192.168.0.255 EM1 inet 192.168.1.2 netmask 255.255.255.0 broadcast 192.168.1.255 My routing table looks like: Destination Gateway G enmask Flags Metric Ref Use Iface 0.0.0.0 192.168.1.1 0.0.0.0 UG 0 0 0 wlan0 192.168.0.0 0.0.0.0 255.255.255.0 U 0 0 0 em1 192.168.1.0 0.0.0.0 255.255.255.0 U 0 0 0 wlan0 I have enable a static route in the DSL server: Status Network Destination Subnet Mask Interface Gateway Remove Edit Active 192.168.0.0 255.255.255.0 LAN 192.168.1.2 From my server I can ping the DSL router and the NAS. From the NAS I can ping both NICS of the server. However the NAS is unable to ping the DSL router or any address in the Internet. Any idea of what is wrong. Thank you in advance

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  • How create a virtual network for practice?

    - by light
    I need to organize a virtual network for practice with Windows Server 2008 and several workstations with Windows OS. To make it all I only have a laptop with Dual-Core 2.10Ghz, 3 GB RAM, 50 GB free space and Windows 7 on it. Also I have external USB 3.0 hard-drive with 250GB free space and flash disk with 8GB space. What can you suggest? Because I have limited resources, I think to install ESXi 5.1 on the main disk of my laptop as second OS, with installed Windows 7. I have no idea will it work or not, but after that I want to try to create hosts using availible space on external hard-drive. Is it possible?

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  • Wireless connection silently dies randomly

    - by Force Flow
    I have two WAP4410N wireless access points powered using Power-Over-Ethernet. They are both connected to the same LAN and broadcasting the same SSID with a WPA2 password. One is using channel 1, while the other is using channel 11. There is coverage overlap where the signal from both access points hover around -75db to -85db while standing in the same physical location. DHCP is disabled, and is being provided by another network device. Every day or so, devices can connect and authenticate to the access points, but are not granted an IP address (and subsequently are unable access to the LAN or Internet). For devices that had already retrieved an IP address prior to the issue exhibiting itself, the devices simply stop communicating with LAN and Internet. However, I can still access each access point's web admin interface from the LAN. If I reboot both devices, the problem vanishes and devices are once again able to get an IP address and connect to the LAN and Internet. Are these symptoms of signal interference between the two WAPs or is this a completely different issue?

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  • How does communication between 2 computers in a single network happen?

    - by learner
    Lets say I and my friend connect our computers with a LAN cable. I ping my friend with his IP address. How does it work? Since we are in the same network, we don't even need IP addresses, do we? Isn't IP addressing only relevant in case of inter-network communication? What will the ping command do with his IP address? How will it eventually find his physical address (NIC address)? (no ARP here, because that would involve a router at the edge of the network, which doesn't apply here). Am I wrong somewhere?

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  • Port forwarding stopped working in my Linksys WRT54G2 Linksys router.

    - by user23490
    How to do it again? I had simply forwarded needed ports (e.g. for counter strike, ftp, http etc)) but now with same system, same OS and same router and settings, it's not working. Tried setting router to "factory defaults" and do everything again. However other jobs are being done like it is connecting to my DSL ISP and I can access Internet easily. Still no success. PS. I tried on both Windows and Ubuntu. On Windows I use it for Counter Strike and others (e.g. host my local FTP server) on Ubuntu.

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  • No network connection and error

    - by PS
    My PC keeps reporting the following error in the event viewer around every 10-15 minutes: Faulting application , version 0.0.0.0, faulting module unknown, version 0.0.0.0, fault address 0x00000000. Whenever it happens, the XP theme change to classic theme then change back to the normal theme. The network goes down and I must restart PC for the network to come back online. What could be causing this and how do i fix it?

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  • is it possible to set up a wireless bridge with dd-wrt?

    - by user398314
    I have a standard router (dlink) and a secondary linksys running wrt. Currently i have it set up according to this guide. (using the Instruction for dd-wrt v24 sp1 settings) It works great however it seems as though i can only connect via the actually ports in the router meaning it has to be hard wired. Is it possible to set it up so that I can connect to the secondary router and still use it as a bridge? Seems like it doesn't work as a wireless AP anymore when its running in bridged mode.

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  • network configuration

    - by carlcroom
    Hello all. I have just inherited a network at my work- 1 primary server and about 65 computers running XP. All machines have Gigabit ethernet cards and all are connected through Gigabit switches and cat. 6 cables. The workstations send large numbers of image files to the server where they are held until they need to go to a printer. And I'm talking Gigs of files. We get a network slowdown when large number of files are coming from the workstations at the same time large numbers are also going the the printers. All machines have to be on the same subnet because of some proprietary software. Is there anything I can do to lessen this logjam? Any help would be greatly appreciated.

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  • Y560 Lenovo IdeaPad bandwidth issue

    - by Vlakarados
    I have a Y560 Lenovo IdeaPad, my config: i7 740QM, 4GB RAM, RADEON HD 6570m/5700 1024MB and my network adapter is Intel WIFI Link 5150. The laptop is 2 years old and the problem I'm about to describe is present from the first day. As may be seen here, the receive bandwidth should be up to 300 Mbps, but the maximum download speed from LAN and using torrents is about 2.4MB/s. My internet connection is 100Mbps and other laptops in my house have the appropriate download speed - up to 12MB/s, I have tested at my friends house and at my job, the speed remains the same. I have tried all possible configurations I could think of in network settings - nothing helps. I use Windows 7 and I have had installed different versions (Ultimate, Professional, Home, OEM Home, 64 and 32 bit versions). Some time ago I searched for the problem and found one or two threads that had the same problem and there were something said about a limitation in firmware that some experienced users have managed to bypass. Updating drivers didn't help me either. Is there any reliable way to fix this?

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  • The meaning of the first line output in the iwconfig command in Linux

    - by John Smith
    When I'm using the iwconfig command on my current wifi interface , wlan0 , the first line I get as output is wlan0 IEEE 802.11bgn. When I try to do this when I am connected to other WiFi's, I sometimes get other versions, like IEEE 802.11bg or IEEE 802.11abgn. I want to ask, what's the meaning of this output? if the output is IEEE 802.11bgn then it means that this WiFi supports both the b , g and n standards or it means something else? Thnaks :)

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