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• How to get Wifi Working Properly - I am Noob

  - by user287853

  I'm a noob to Ubuntu, but not computers. I installed a full version of Ubuntu version 12 whatever it is. I run it on a machine that has Win7/Win8 on another hard drive. My wireless adapter is some tiny USB stick I got on eBay - it works great in Windows, but I can't get it to work in Ubuntu. More precisely, Ubuntu is providing me a list (sometimes) of wireless networks in the area and when I try to connect to mine it just keeps password prompting me even though the one I use is correct. I looked over all the settings multiple times and don't believe there is anything in error regarding what it takes to connect to my network. So, I thought maybe it is a driver issue and came across NDIS. I thought I should try installing it, but I don't know how when I can't connect the Ubuntu machine to the Internet. I tried some commands to no avail. I have the Ubuntu installation disc and it shows a NDIS common and utils .deb files in there. Can someone out there help me out to get this wireless setup so I can get online?

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• Windows Server 2008 r2 Hardening [on hold]

  - by Natasha

  I have created windows server 2008 r2, running on VM, Where Running services in Server Manager 1) File services ( in Role) 2) Telnet Client ( Features) Windows Firewall Disabled and we are using TOMCAT APACHE WEB SERVER, here i want to harden the windows server, While running SCW by simply clicking with default NEXT, at last when i have clicked SAVE and RUN now in SCW, immediately my remote desktop services disabled. May I Know the things i want to add in Roles,features and finally want to harden windows ? and also what about audit policy and network settings in that ? Please help me out, Don't Ignore.

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• Why is my hosts file not working?

  - by elliot100

  I've been using the hosts file to for local website development, and it's recently stopped working. No entries other than localhost resolve. I've simplified to test, so it now contains only 127.0.0.1 localhost ::1 localhost 127.0.0.1 test.dev localhost responds to ping, test.dev does not. The file is called hosts with no extension It has no trailing spaces It's saved in C:\WINDOWS\System32\drivers\etc which matches the value of HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\DataBasePath Oddly, despite UAC being on, I can edit, delete and save the file without admin permissions No proxy is being used, PC is not connected to network for testing Stopping the DNS Client service seemed to resolve the issue for a few minutes, test.dev briefly resolved but doesn't any more. Only firewall is Windows' Machine has been restarted. Is there anything else I should try?

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• How can Facebook's session get mixed up because of NAT and/or Proxy

  - by Alex

  Have received some reports from a customer (a very large company) they reported issues from clients who are using Facebook. These clients claim that once in a while when they log in to Facebook they end up in someone else's session. I know that network is NATed then Proxied before getting to Facebook.com. Although I'm not able to explain how this issue can occur. Is it possible that the Proxy is not sending the right session back to the clients? How can they end up with someone else's session since Facebook is cookie based session?? Anyone seen this before?

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• backup sql databases, folders; 7ZIP and copy to ftp

  - by laurens

  Hi all, We are quite stuck with which solution to choose for this backup issue: What should happen: First, there should be an interface were to choose several sql databases (sort of checkboxes or whatsoever), also a few folders should be backed up - this could be part of the program or could be seperate, I think about an interface were to select folders, but a txt file (or xml) with paths-to-folders is as good. Next, everything should be 7Zipped, SQL-DB and files seperate. Eventually everything should be copied to a local network drive after which copied via FTP. Also important; it could be programmed or (partly) bought but I can't be one of those expensive backup tools $1000+ etc. I already found this fairly priced tool that does already most of the tasks 7ZIP and copy to ftp sqlbackupandftp.com For your information: we had a kind of self-made tool created by a collegue (some time ago) but it became very untrustworthy and as the databases grew it couldn't handle it anymore... moving on Please come up with suggestions. Thanks in advance!

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• Visual Studio 2010 Service Pack 1 Released

  - by krislankford

  The VS 2010 SP 1 release was simultaneous to the release of TFS 2010 SP1 and includes support for the Project Server Integration Feature Pack and updates to .NET Framework 4.0. The complete Visual Studio SP1 list including Test and Lab Manager: http://support.microsoft.com/kb/983509 The release addresses some of the most requested features from customers of Visual Studio 2010 like better help support IntelliTrace support for 64bit and SharePoint Silverlight 4 Tools in the box unit testing support on .NET 3.5 a new performance wizard for Silverlight Another major addition is the announcement of Unlimited Load Testing for Visual Studio 2010 Ultimate with MSDN Subscribers! The benefits of Visual Studio 2010 Load Test Feature Pack and useful links: Improved Overall Software Quality through Early Lifecycle Performance Testing: Lets you stress test your application early and throughout its development lifecycle with realistically modeled simulated load. By integrating performance validations early into your applications, you can ensure that your solution copes with real-world demands and behaves in a predictable manner, effectively increasing overall software quality. Higher Productivity and Reduced TCO with the Ability to Scale without Incremental Costs: Development teams no longer have to purchase Visual Studio Load Test Virtual User Pack 2010. Download the Visual Studio 2010 Load Test Feature Pack Deployment Guide Get started with stress and performance testing with Visual Studio 2010 Ultimate: Quality Solutions Best Practice: Enabling Performance and Stress Testing throughout the Application Lifecycle Hands-On-Lab: Introduction to Load Testing with ASP.NET Profile in Visual Studio 2010 How-Do-I videos: Use ASP.NET Profiler in Load Tests Use Network Emulation in Load Tests VHD/VPC walkthrough: Getting Started with Load and Performance Testing Best Practice guidance: Visual Studio Performance Testing Quick Reference Guide

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• What is the best solution for letting both Macs and PCs access digital images and videos on a networ

  - by Gertbert

  I'm looking for a simple way to share digital images and videos over a network to both Macs and PCs. I'm currently looking into three options: NAS, WD MyBook Mirror drives attached to a router, or an HP WHS product like the Data Vault. I'm looking for something easy to implement that allows for drive mirroring but also has good performance for both Macs and PCS. I've read that the HP WHS devices rebalance on their own schedules, making them useless for streaming video, and hope someone can definitively confirm or deny this as it's a dealbreaker if true. Any other suggestions are appreciated. Thanks!

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• Unable to connect guest using VMWare Player

  - by eLAN

  I'm running RedHat server 5.3 as guest on Window XP VMware palyer. the network setting is set to "Host Only", but I have tries all other settings. I'm able to ping the guest machine, but I'm unable to connect it in any other way including webserver, Tomcat, Telnet, ssh. all of the services above are working from within the guest (using localhost). Guest firewall and SELinux are disabled. any idea on what I should check next? every idea will be appreciated... thnaks Ilan

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• Can't access LAN computers with SSH

  - by endolith

  I got a new Windows 7 machine, and was using VNC,SSH etc to connect to my Ubuntu machine, and it worked fine previously. Now it doesn't work if I use the machine's hostname or local IP, but if I use the DynDNS name, it works. I can also access it from my Android phone using the local hostname over SSH. If I try to connect with SSH to the hostname, it says "Host does not exist". VNC says "Failed to get server address". NX says "no address associated with name", and I don't see it in Windows' "Network" folder. I've rebooted everything. I've turned off Windows firewall. It was working fine a few days ago, but now it's not. How do I figure out what's blocking it?

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• Cisco NAT + IPSec + Web Server Configuration Question

  - by zagman76

  Hello - I currently have a Cisco 881W, and it is configured with one of our static IPs to do basic NAT for the network. We also have a web server that needs it's own IP. I configured the NAT for the 2nd IP, however now traffic through our IPSec VPN doesn't route to the web server properly (well, it routes to the internet, rather than through the Tunnel). I followed the instructions here: http://www.cisco.com/en/US/tech/tk583/tk372/technologies_configuration_example09186a0080094634.shtml But now the outbound NAT doesn't seem to be working properly - it keeps going to the NAT of the Cisco, and not the designated IP address. If anyone can assist, I would appreciate it greatly. Let me know what you need, and I'll get it to you! Thanks!

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• In Windows XP, is it possible to disable user credential caching for particular users

  - by kdt

  I understand that when windows caches user credentials, these can sometimes be used by malicious parties to access other machines once a machine containing cached credentials is compromised, a method known as "pass the hash"[1]. For this reason I would like to get control over what's cached to reduce the risk of cached credentials being used maliciously. It is possible to prevent all caching by zeroing HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\CachedLogonsCount, but this is too indiscriminate: laptops users need to be able to login when away from the network. What I would like to do is prevent the caching of credentials of certain users, such as administrators -- is there any way to do that in Windows XP? http://www.lbl.gov/cyber/systems/pass-the-hash.html

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• Disk quota problem in Windows Server SBS 2003

  - by deddebme

  I have got a new job and the existing SBS 2003 domain setup is unsecure (i.e. everyone is a domain admin etc etc). There are lots of problem due to inexperienced "network admin", and I am trying to fix them one by one. There exist one issue which I found quite weird, that the "Quota" tab exists in the C:(NTFS) drive but not the D:(NTFS) drive. I played around with gpedit to enable disk quota (it was "not configured" before), but still I can't see that tab. Have you seen this problem before? How did you solve it?

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• Port forwarding on D-Link DIR-615 super-slow, useless

  - by Jaroslav Záruba

  Hello I have replaced my old router with DIR-615 from D-Link, and now the port forwarding is so slow it makes the router practically useless. Accessing the router itself (admin UI) is without issues, no delay whatsoever. But when I try to access a service on another computer in the network the requests take minutes and minutes. (E.g. I can see source of my GWT-app main page, but loading additional CSS and JS files takes years.) If anyone could recommend any further diagnostics I should do to figure out what is happening it would be great. Few notes: happens with more services (web-app on Tomcat, viewing directory index via Apache) it does not make a difference whether the service is hosted on wired or wireless PC accessing the service on a localhost works fine turning off firewall on the target PC does not make difference either (makes sense) when I replace this router with the old one (both 192.168.1.1) everything works fine I see nothing suspicious in the router's log I believe I have the latest firmware (4.11) DIR-615 sucks, it already died once completely Regards Jarda Z.

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• Why do some web servers not respond to icmp requests?

  - by John Himmelman

  What is the purpose of blocking/dropping inbound ICMP traffic on a public web server? Is it common for it be blocked? I had to test if a server was accessible from various locations (tested on various servers located in different states/countries). I'd rely on ping as a quick & reliable method of determining if a server was online/network-accessible. After not receiving a response on a couple boxes, I tried using lynx to load the site, and it worked.

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• How to have Windows 7 remember a password for a Domain

  - by Kelly Jones

  About eighteen months ago, I wrote a post covering how to clear saved passwords in Windows XP.  This week at work I was reminded how useful it is to not only deleted saved passwords, but to also setup wildcard credentials using this same interface. The scenario that I run into as consultant working at a client site, is that my laptop is not a member of the Windows Domain that my client uses to secure their network. So, when I need to access file shares, shared printers, or even the clients internal websites, I’m prompted for a name and password.  By creating a wildcard entry on my laptop (for the user account that the client issued to me), I avoid this prompt and can seamlessly access these resources.  (This also works when you’ve configured Outlook to access Exchange via RPC over HTTP.) How to create a credential wild card entry in Windows 7: Go to your Start Menu --> Type "user" into the Search box Click on the “Manage your credentials” in the column on the left Click on the “Add a Windows credential” link Enter the Domain (in my case my client’s domain), something like this: *.contoso.com Enter the username and password That’s it.  You should now be able to access resources in that Domain without being prompted for your name and password.  Please note: if you are required to change your password periodically for that domain, you’ll need to update your saved password as well.

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• how're routing tables populated?

  - by Robbie Mckennie

  i've been reading "tcp/ip illustrated" and i started reading about ip forwarding. all about how you can receive a datagram and work out where to send it next based on the desination ip and your routing table. but what confused me is how (in a home network setting) the table itself is populated. is there a lower layer protocol at work here? does it come along with dhcp? or is it simply based on the ip address and netmask of each interface? i do know (from other books) that in the early days of ethernet one had to set up routing tables by hand, but i know i didn't do that.

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• The Importance of Fully Specifying a Problem

  - by Alan

  I had a customer call this week where we were provided a forced crashdump and asked to determine why the system was hung. Normally when you are looking at a hung system, you will find a lot of threads blocked on various locks, and most likely very little actually running on the system (unless it's threads spinning on busy wait type locks). This vmcore showed none of that. In fact we were seeing hundreds of threads actively on cpu in the second before the dump was forced. This prompted the question back to the customer: What exactly were you seeing that made you believe that the system was hung? It took a few days to get a response, but the response that I got back was that they were not able to ssh into the system and when they tried to login to the console, they got the login prompt, but after typing "root" and hitting return, the console was no longer responsive. This description puts a whole new light on the "hang". You immediately start thinking "name services". Looking at the crashdump, yes the sshds are all in door calls to nscd, and nscd is idle waiting on responses from the network. Looking at the connections I see a lot of connections to the secure ldap port in CLOSE_WAIT, but more interestingly I am seeing a few connections over the non-secure ldap port to a different LDAP server just sitting open. My feeling at this point is that we have an either non-responding LDAP server, or one that is responding slowly, the resolution being to investigate that server. Moral When you log a service ticket for a "system hang", it's great to get the forced crashdump first up, but it's even better to get a description of what you observed to make to believe that the system was hung.

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• How to install Ubuntu 12.04.1 in EFI mode with Encrypted LVM?

  - by g0lem

  I'm trying to properly install Ubuntu 12.04.1 LTS 64-bit PC (AMD64) with the alternate install CD ".iso" on a lenovo Thinkpad X220. Default Hard Disk (with a pre-installed version of Windows 7) has been replaced with a brand new SSD. The UEFI BIOS of the lenovo Thinkpad X220 is set to "UEFI Boot only" & "USB UEFI BIOS Support" is enabled (I'm using an external USB DVD reader to perform Ubuntu installation). The BIOS is a Phoenix SecureCore Tiano, BIOS version is 8DET56WW (1.26). The attempts below are made with the UEFI BIOS settings described above. Here's what I've tried so far: Boot on a live GParted CD Create a GPT partition table Create a FAT32 partition for UEFI System, set the partition to "EF00" type ("boot" flag) Leave remaining space unformated Boot on Ubuntu 12.04.1 LTS 64-bit PC (AMD64) with alternate CD: Perform the install with network updates enabled Use manual partitioning FAT32 partition created with GParted is used as "EFI System partition" Remaining space is set to be used as "Physical volume for LVM" Then "Configure encrypted volumes" using the previous "Physical volume for LVM" as the encrypted container, passphrase is setup. "Configure the Logical Volume Manager" creating a volume Group using the encrypted container /dev/mapper/sda2_crypt Creation of the Logical Volumes "Create logical volume", choosing the previously created volume Group Assign a mount point and file system to the Logical volumes : LV-root for / LV-var for /var LV-usr for /usr LV-usr-local for /usr/local LV-swap for swap LV-home for /home NOTE: /tmp would be in RAM only using TMPFS Bootloader step: neither my ESP partition (/dev/sda1, /dev/sda or MBR) seems to be the right place for GRUB, I get the following message (X suffix is for demonstration only): unable to install grub in /dev/sdaX Executing 'grub-install /dev/sdaX' failed This is a fatal error. Finish installation without the Bootloader & Reboot The system doesn't start, there's no EFI/GRUB menu at startup. What are the steps to perform a clean and working installation of Ubuntu 12.04.1 Precise Pangolin, 64bit version in U(EFI) mode using the encrypted LUKS + LVM scheme described above?

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• No DNS resolving with VPN (RRAS)

  - by Sven

  I have a RRAS server setup on a Windows 2003 machine with two NIC's. The VPN works like a charm, I can ping all the other computers on the network. But it fails when I try to access resources with hostnames. I searches for a solution but the ones I found are about RRAS setup with a remote DHCP server. But in my case it's the RRAS server that hands out the ip addresses (option for redirection for WINS, DNS is ON and set to the LAN NIC). I also heard something about FQDN.. but I don't really understand what that is.

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• What's static.ak.fbcdn.net that appears on the status bar of my browser everytime Facebook is loading?

  - by Maverick

  I find the message: "waiting for static.ak.fbcdn.net..." on the status bar of my browser everytime I load Facebook and many a times even while loading other websites. I searched on net and found out that static.ak.fbcdn.net stands for static akamai facebook content delivery network. I reckon that static.ak.fbcdn.net is the server URL from where Facebook delivers contents to our browser. Am I right? Can anyone elaborate? Also, why does the above mentioned message appear while loading other websites too?

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• How do I set the UNC permissions on a SQL Server 2008 Filestream UNC?

  - by Justin Dearing

  I have a SQL Server 2008 instance. I have configured filestream access properly, and use it from one column on one table in one of my databases. However, I cannot access the UNC share for the filestream data. I have tried browsing to it as well as trying to open specific files and I get errors both ways. I am running SQL Server 2008 enterprise on a Windows 7 workstation running on the domain. I've tried running the sql server service as a local user, then as network admin. The user I am logged in as is a local admin and a sysadmin in SQL server.

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• How can I configure Adobe Help so it doesn't chatter so much with Adobe's domain?

  - by Michael Prescott

  Adobe Help that came with Creative Suite 5 and/or Flash Builder Pro is constantly creating network traffic with an Adobe site, www.wip4.adobe.com In the Adobe Help application Preferences, I find that I can change the settings so that I must manually download updates, but apparently the application still likes to call home and chatter non-stop with www.wip4.adobe.com. I could use something like Little Snitch to block all this spyware-like behavior, but I'd really prefer to just change the application's behavior. Is there a hidden setting or configuration file to adjust this behavior to something more appropriate and polite?

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• Windows Server 2003 (as workstation) unable to write to Samba fileshares

  - by remyhorton

  Setup is a Samba fileserver under Linux, which i am trying to access from a Windows Server 2003 box which has been reconfigured as a workstation. I can log onto the fileshares and can copy/delete files, but trying to open a file then write to it fails. Renaming files also fails with an error about requiring a filename. Drag/dropping files onto Xemacs gives me a message about copying from the network zone, and once open the file is read-only. Any ideas of what is wrong? I suspect it is a miscommunication of security details, as folder security options are all unchecked (checking them has no effect). I know it is not a problem with Samba itself, as Window2000, WindowsXP, and Nautulas (under Linux) can all access/edit fileshare files fine using the same userid/password. I am not using domain logins.

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• Windows Vista: TCP/IP stack is smashed, how to reinstall the LAN-Devices?

  - by Ice

  the TCP/IP stack is smashed, thats why no LAN-Connections are running. I want to download the LAN drivers from another computer and uninstall and reinstall the LAN devices on this system. Hopefully that should recreate the stack. But what to download? What uninstall? How to install? Windows Vista is protected against such changes, so how to achieve that job? please help. Update per 2011-03-11: I found all the tipps and hints about "TCP/IP Repair, LSP Fix, and WinSock Fix" according to windows vista but nothing helped to bring back network access. What can i do as next step or which opportunities are left?

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• creating secure multicast with socat

  - by arash

  How we can create secure tunnels multicast with socat? Assume we have a list of ip address, CIDR network addresses that we want to create secure tunnel to them. I found this socat STDIO UDP4-DATAGRAM:224.1.0.1:6666,range=192.168.10.0/24 but I want a secure tunnel and different adds with net addrs I want to create script that give the IPs and net addresses and create secure tunnel ./myscript IP1 NetAdd1 IP2 NetAdd2 .... how can i send this parametersw to socat? Socat multicast hasn't any limits? Thanks for your help

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