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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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• How can I retrieve "remembered"(stored) wi-fi password from a win. 7 device?

  - by user180880

  I have access to PC, and I am a standard user. Everything(incl. "show charecters" tickbox at wiriless menu) requires admin access. Now, that said machine is actually like a big tv with touch. Type-stuff is handled by virtual keyboard of windows. I can reach to c:\ProgramData\Microsoft\Wlansvc\Profiles\Interfaces and can see-open files there, which is I assume where passwords stored are. Now the problem is that these passwords is encypted. I'm ok with if there is a way with changing/resetting admin password as well. Considering this device has nothing but massive amounts of usb(yep, not even cd-dvd // rw) the only way is from inside or with usb without admin rights.

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• Windows 7 unidentified network (or limited access) after hibernate.

  - by null

  My windows 7 network will show limited access or unidentified network after coming up from hibernation. In the office I normally use LAN connection, I turn-off my wireless card (DELL Latitude has on/off switch for the wireless card). When I back at home I will turn on the wireless card, but it will take about 15 seconds to detect my home WIFI and then show limited access. I will have to restart the notebook and it will be able to connect to my WIFI and internet. The problem will be solved if I restart the notebook, but that defeats the purpose of hibernation doesn't it? I have tried uninstalling the wireless card driver but still does not solve it. I also tried updating my network card driver but windows says I am using the latest driver. On support.dell.com also showing I am using the latest driver.

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• Finding other computers on network over command line

  - by Jonathan Haddad

  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?

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• SAN for Medium Business - Where to start? [closed]

  - by Henson

  I've always run Linux on my home computers, and done PC repair for years, but this is my first experience with needing to buy a SAN. I thought I was knowledgeable, but I feel a bit lost. I need to be able to support 25 VMs, which are currently managed through vSphere. The company I'm at is growing quickly though, so I'd like to plan for the future. Ideally, I want a solution that I can just tack arrays onto and manage as one large, iSCSI drive. Suggestions? Good resources? If I can find something that appears to software as one large drive, am I better off going with a solution like FreeNAS or Starwind, or an all-in-one proprietary solution like NetApp? Cost, is (of course, and always I'm sure) an issue.

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• How do I turn a Wi-Fi "hotspot" into a local wired network?

  - by Max Schmeling

  Here's the situation: In a remote "office" I have a computer with no network connection, that I need to network with when I'm at this remote office. There is a wireless network where this computer is, but no wireless adapter in the computer. I have a laptop running Windows 7 that can connect to the wireless, and the computer is running Windows Vista. What is the best way to get them both connected? I know I can buy a USB wireless adapter or something for the computer, but is there an easy way to do it with what I've got?

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• Making many network shares appear as one

  - by jimbojw

  Givens: disk is cheap, and there's plenty lying around on various computers around the corporate intranet redundant contiguous large storage volumes are expensive Problem: It would be fantastic to have a single entry point (drive letter, network path) that presents all this space as one contiguous filesystem, effectively abstracting the disk and network architecture from the paths presented to users. Does anyone know how to implement such a solution? I'm open to Windows and non-windows solutions, free and proprietary.

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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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• Windows 7: Shared folder over wifi working for ONLY "Guests"

  - by James_Smith

  Hi, I have a desktop and a laptop connected to same wifi router. Desktop is connected with wire and laptop with wifi. Both the system runs windows 7 and are on the same workgroup. I have shared some folders on desktop and can view the shared folder list on laptop under "network places". But when I try to open a folder, a prompt appears for username and password. When I enter BOTH username and password, It does not authenticate when I enter ONLY username, I get:- "Windows cannot access \WIn71\Setups you do not have permission to access ..." Now to get around this message I have to give access to "Guests" group on my desktop shared folder. Cant seem to figure out why It cant authenticate username with password. And giving access to "Guests" does not sounds safe!

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• Mount network drive

  - by user971155

  I'm using linux(ubuntu), there's a linux(fedora) server, that I can log in with ssh, is there any possibility //server/dir /mnt/my_mount_dir cifs username=loginpassword=11111,uid=1000,iocharset=utf8,codepage=unicode,unicode 0 0 As far as I'm concerned, this construction uses SMB as primary tool. Is there any possibility to use NFS or any another approach, because in case of SMB it tends to have permission, symlink collisions. PS It would be great if you also provide some links. Thanks.

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• 2 RJ45 connectors on a one WAN cable

  - by mr_stavo

  Hello, I encountered strange setup on a network at company where I do some work. They have internet connection from small ISP located in the same building, all I see is one CAT5 cable with 2 RJ45 connectors. One is going to WAN port on the router and another into LAN port on the same router. This is the only way for internet connection to work. I tried to connect my laptop to one of the RJ45 but it won't work. Now, what is the purpose for such setup?

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• Colliding network addresses

  - by joepd

  A customer is using the same address space as the company network. I need to connect with Cisco VPN Client to the network of the customer, without affecting local connectivity. To keep all working, I connect from a VM to avoid network addressing collisions. This works, but I'm looking for a way to get rid of the VM. Is it possible to connect with Cisco VPN Client 4.8 from Windows 7, without changing the 'normal' routing? How to tell specific applications (most importantly: Putty, VNC, mstsc, psql) to resolve their routes to the VPN instead of the default network interface? Have been hearing about SOCKS-proxies, is that something that could be made to work? I fear that this is a a bit of a crude question, but I'd be happy to specify more details/context.

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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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• network administrator

  - by deepak11589

  i want email ID of good network administrator so that i can ask my question. If any one can help with it would be a great help.

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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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• Cheap NAS for connecting a USB drive to the network

  - by olaeld

  I am looking for a cheap way of hooking up a USB drive to the LAN. This could be a router with a USB port, or possibly a more regular NAS device with a USB port. I am hoping to find something below $200. But if there is a device with "magical properties" I may be interested to hear about it anyway.

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• Does a 300mbps 802.11n wireless connection have any noticeable speed improvement over 54mbps g?

  - by j j

  300mbps sounds wonderful, but not with my horrible Comcast internet connection. I doubt there's an internet connection in America that even hits 54mbps. So I'm guessing that the only reason someone would be inclined to upgrade is for faster data transfer within the local network. With my internet connection where download rates are rarely ever above a few hundred kilobytes a second, would I even see any improvement in switching from 802.11g to 802.11n?

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• Remoting into two diffrent servers on the same network

  - by user160605

  I`m trying to figure out a way to remote into both my servers on the same network. I have a 2008 r2 and a server 2003. Right now i can remote into my server 2003 but I dont know what IP to use for the 2k8 server. They seem to have the same public im. Both servers are behind a fire wall (sonic wall tz170) I rememeber having to to something on the firewall to get into the 2k3 server but forgot what I did... Can anyone give some advice thanks

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• can i make my computer a server for internet service

  - by peril brain

  i hv a computer which is connected to internet using PPP(modem).. can i make my computer a server for some specific domain.

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• Private subnet for VM server host-only network

  - by Derek Pressnall

  At my current job, we distribute a product based on a Linux server with multiple VMs defined (using KVM / libvirt). We are planning to expose limited ports to the customer's network, and use iptables to direct inbound traffic to the appropriate internal VM. My question: is there a class of private subnets that I can use for the internal host-only network that is least likely to conflict with a client IP subnet? Specifically, if I choose a /24 out of any of the RFC-1918 defined private subnets (such as 192.168.x.x), there is a chance of conflicting with a customer-used range. I noticed that several current VM implementations default to 192.168.122.x -- is this due to an RFC that I'm not familiar with, and therefore this is a safe range to use (that most network admins would avoid)? Or did the various VM vendors just pick that range randomly? I guess I'm looking for an IP range that is more private than the existing private (RFC1918) addresses. The only other thought I had was to use one of the "Test Net" IP ranges reserved for documentation purposes (RFC 5737). Note, that I'm not worried about a customer's network blocking these IPs, as this is only internal to our server (packets get NATted before leaving the box). However this does seem more unorthodox than just sticking with the default 192.168.122.x/24 subnet.

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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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• Why would my VPN connection work better than my direct connection?

  - by tarling

  I have a new Windows 7 64bit laptop, which connects wirelessly to a ASDL router/modem. With my regular connection, page requests often time out - usually with form submissions. When I use the same connection to connect to a VPN (using OpenVPN) the requests seem to work fine. These are not requests to sites that are only available via the VPN - just regular websites I think this is specific to this new laptop (provided and set up by my employer) - other machines work fine. Many thanks for any advice, James

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• [CentOS 4.8] nslookup resolves domains to IPs, but I can't get a response to pings to external servers

  - by Beco

  I have a fresh install of CentOS 4.8 running on an internal development server. I haven't done anything to it besides setting up sudoers and SSH. I can SSH into the server and from there resolve domains to IPs and ping internal servers, but for some reason I don't get any response from pinging external servers. The software firewall is disabled, and the problem is present with both static and DHCP-assigned network configurations. The network domain controller is a Windows Server 2003 box. $ nslookup google.com Server: 10.254.2.5 Address: 10.254.2.5#53 Non-authoritative answer: Name: google.com Address: 74.125.47.147 Name: google.com Address: 74.125.47.99 <etc...> 10.254.2.5 is the Win2K3 server. $ ping google.com PING google.com (74.125.47.106) 56(84) bytes of data. It just hangs here indefinitely. $ cat /etc/resolv.conf ; generated by /sbin/dhclient-script search <...snip...>.local nameserver 10.254.2.5 nameserver 10.254.2.124 10.254.2.124 is the backup DC server, which is currently off and tombstoned by this point. The snipped section is our company name. # ifconfig eth0 Link encap:Ethernet HWaddr <snip> inet addr:10.254.2.101 Bcast:10.254.2.255 Mask:255.255.255.0 inet6 addr: <snip>/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:80066 errors:0 dropped:0 overruns:0 frame:0 TX packets:4421 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:7810133 (7.4 MiB) TX bytes:590550 (576.7 KiB) Interrupt:225 Base address:0xc000 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:32 errors:0 dropped:0 overruns:0 frame:0 TX packets:32 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:8104 (7.9 KiB) TX bytes:8104 (7.9 KiB) # route -n Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 10.254.2.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0 169.254.0.0 0.0.0.0 255.255.0.0 U 0 0 0 eth0 0.0.0.0 10.254.2.5 0.0.0.0 UG 0 0 0 eth0 And, for good measure, a snapshot of the current ethernet config via the system-config-network GUI. Edit: I don't yet have enough rep to post images, so here's a link. Sorry! system-config-network snapshot I'm pretty green when it comes to setting up *nix dev servers and network configuration in general, so please let me know if I've left out critical information, or posted information I shouldn't have posted. Thanks!

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• cant access my local web server with the external IP

  - by TommyG

  I havent been able to find a solution to my particular problem. I have a MAC which I set up as a web server and configured my router to forward to the local IP. When trying to access my site from outside, it does say "It works!", however, when I call a simple Hello World PHP script that I have, I am getting an error that the page could not be opened. I did enable PHP on my machine so thats not the problem. I really have no idea how can I access - I followed so many tutorials and did everything correctly. My router is a Linksys WRT160N if it matters at all. In the port forwarding section, I selected to forward

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• My wireless network slows down every 7.5 minutes when my desktop is switched on

  - by Dog Ears

  My network has lag spikes lasting for a few seconds every 7.5 mins. The spikes also effect any other computer connected connected to my wirless router at the time. My wife has to connect her laptop via a cable to prevent the lag causing problems when she's VPNing into her work. If I switch my PC off the problem goes away! I've got an Edimax 7728ln 802.11n wireless card and Speedtouch 585v7 (I'm with Be) I've Tried... Updated the drivers from Edimax website: 2.0.3.0 (it does say 3.0.2.0 in devices properties though) WLAN Optimizer doesn't seem to be helping What can I do?

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