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• Group Policy processing and autologon on Windows 7

  - by Jason Berg

  I'm trying to accomplish a few things via Group Policy on Windows 7. Software Installation, map drives, map printer, etc. I've got these computers set to autologon. The problem I'm running into is that the computers logon before DHCP has done its thing. Therefore, they don't apply any group policies properly. How do I fix this? I've already set a policy to "Always wait for the network at computer startup and logon". I've read up a bit and this doesn't actually mean that it waits for DHCP. So it's a little pointless. Anything that would delay logon would work. Or if I can somehow make the computer wait for DHCP.

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• apt-get does not work with proxy

  - by tommyk

  For a command sudo apt-get update I get following error W: Failed to fetch http://ch.archive.ubuntu.com/ubuntu/dists/maverick-updates/multiverse/binary-i386/Packages.gz 407 Proxy Authentication Required ( The ISA Server requires authorization to fulfill the request. Access to the Web Proxy filter is denied. ) I am running Ubuntu 10.10 installed on Windows XP using VirtualBox. For internet connections I am using proxy server with an authentication. I tried to use gnome-network-proxy tool to set proxy settings system-wide. After that /etc/environment has been updated by http_proxy variable with the format http://my_proxy:port/, there were no authentication data. I checked this with firefox. Browser asked my for login and password and everything was working fine. It was unfortunately not the case for apt-get. I have also tried to do as described here. Unfortunately it does not work. May it be somehow related to the fact that a proxy is in a Windows domain, any ideas ? EDIT: My proxy name is http-proxy. Is '-' a special character here ?

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• Which kerberos flavor?

  - by Michael Lowman

  So I'm setting up a small network with all the standard stuff (files, email, etc.) and I've decided to go with a Kerberos+LDAP solution. Any ideas or recommendations on Heimdal vs. MIT? I've used MIT before, and tangentially Heimdal, but I don't really know of any real reason for using one over the other. I just know that I'd prefer not to realize I'd rather be running MIT after getting the whole Heimdal up and running with a full user database. If any other info'd be useful, I'm happy to provide.

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• IIS in VirtualBox serving files from shared Ubuntu folder

  - by queen3

  Here's the problem: I want to use Ubuntu. But I need to develop ASP.NET (MVC) sites. So I setup VirtualBox with Win2003 and IIS6. But I would prefer my working files to be located in my Ubuntu home folder. So I setup shared folder in VirtualBox and make IIS6 virtual directory work from there. The problem is, IIS6 can't do this. Whatever I try (mapped drive, network uri path) I get different IIS errors: can't access folder (for mapped drive), can't monitor file system changes (\vboxsvr share path), and so on. Is there a way for IIS6 in virtual machine to configure virtual application folder to be on host machine (Ubuntu) - be it shared folder, mapped drive, smb share, or whatever?

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• Moving Windows 7 profile to new user

  - by Kevin Grossnicklaus

  I have a laptop which I've been using as part of a corporate network with an AD login (and associated local profile). The laptop is loaded with Windows 7 Ultimate. I need to remove the laptop from this domain and, to start this process, I have already configured a local user on the box for me to use moving forward (granting this user the same local admin rights as the AD user). I'd like to migrate all the files, settings, etc from the local AD profile to the new non-AD profile. Is there a simple way to do this? Anything built into Win 7? As far as basic files I can probably just manually copy all the documents, pictures, music, desktop, favorites, etc... But is there a more streamlined way to move profile information? -Kevin

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• Iphone/Android app – chatroom development – what framework & hosting needs?

  - by MikaelW

  I have some experience regarding IPhone and Android development but I am now struggling to solve a new class of problem: apps that involve a client/server chatroom feature. That is, an app when people can exchange text over the internet, and without having the app to constantly “pull” content from the server. So that problem can’t be solved with a normal php/mysql website, there must be some kind of application running on a server that is able to send message from the server to the phone, rather than having the phone to check for new messages every 10 seconds… So I’m looking for ways to solve the different problems here: What framework should I use on the two sides (phone / server)? It should be some kind of library that doesn’t prevent me to write paid apps. It should also be possible to have the same server for the Iphone and android version of the app. What server / hosting solution do I need with what sort of features, I just have no experience regarding server application that can handle and initiate multiple connections and are hosted on hardware that is always online I tried to find resources online but couldn’t so far, either the libraries had the wrong kind of license/language or I just didn’t understand… Sometimes there were nice tutorial but for different needs such as peer2peer chat over local network… Same with the server and the hosting problem, not sure where to start really, I’m calling for help and I promise I will complete this page with notes about the experience I will get :-) Obviously the ideal would be to find a tutorial I missed that include client code, server code and a free scalable server… That being said, If I see something as good, it probably means that I have eaten the wrong kind of mushroom again… So, failing that, any pointer which might help me toward that quest, would be greatly appreciated. Thanks in advance. Mikael

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• Help with IPTables - Masquerading + Forwarding, 1-to-1?

  - by Artiom Chilaru

  I've got a clean Ubuntu Server 10.10 with OpenSSH, OpenVPN and vsFTPd installed. The server is running as a VM on the Hyper-V server (hypervisor), has two network interfaces mapped to physical adapters (eth0 and eth1), and a virtual interface with a direct connection to the hypervisor (eth2). The VPN will create a tun0 interface when a client connects. What I want is the remote user, connecting over VPN to be able to connect to the hypervisor (all ports, ping etc). The initial idea was to make the VPN create a tap0 interface, and bridge eth2 to tap0, but this didn't work, unfortunately, as it seems that the adapters don't want to go into promiscuous mode (partially confirmed by MS) At the same time, both the hypervisor and the remove client over VPN can successfully ping/connect to the ubuntu server with no problems. So my plan right now is to try doing some 1-1 masquerading, if possible. Basically, I want every request sent from the VPN client to the ubuntu server to be redurected to the hypervisor instead (with IP translation ofc), and every request from the hypervisor to the ubuntu machine sent to the VPN client (IP translated too). Only 1 client will be connected at a time to the VPN, so I can force limit it to a single IP at all times, if necessary. Is this the right way to go, and if true, how can this be achieved? It's almost like a special case of port-forwarding, except every single port on tun0 is forwarded to a machine in eth2, and every port on the eth2 side forwards to an ip on tun0 I guess it could be done with iptables, but I'm rather new in linux, so I can't do it myself... help? :(

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• Port forwarding for VNC on Dynalink RTA1335 not working

  - by Curyous

  I've vnc-java running on an Ubuntu box, with the IP address 192.168.1.68, using port 5800 (because port 5900 is being used for normal VNC). If I connect to 192.168.1.68:5800 using another computer on the network, I can use VNC fine. Using www.whatismyip.com, I find out what my IP address from the outside world is, and if I go directly to that, I get to access my modem/router. If I try to navigate to that IP address, with ':5800' on the end, I get a "This web page is not available." error. I have port forwarding set up in the router as follows: Application Name External Packet Internal Host IP Address Protocol Port IP Address Port VNC ALL TCP/UDP 5800 192.168.1.68 5800 What else do I need to do to get this to work?

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• Can someone explain the "use-cases" for the default munin graphs?

  - by exhuma

  When installing munin, it activates a default set of plugins (at least on ubuntu). Alternatively, you can simply run munin-node-configure to figure out which plugins are supported on your system. Most of these plugins plot straight-forward data. My question is not to explain the nature of the data (well... maybe for some) but what is it that you look for in these graphs? It is easy to install munin and see fancy graphs. But having the graphs and not being able to "read" them renders them totally useless. I am going to list standard plugins which are enabled by default on my system. So it's going to be a long list. For completeness, I am also going to list plugins which I think to understand and give a short explanation as to what I think it's used for. Pleas correct if I am wrong with any of them. So let me split this questions in three parts: Plugins where I don't even understand the data Plugins where I understand the data but don't know what I should look out for Plugins which I think to understand Plugins where I don't even understand the data These may contain questions that are not necessarily aimed at munin alone. Not understanding the data usually mean a gap in fundamental knowledge on operating systems/hardware.... ;) Feel free to respond with a "giyf" answer. These are plugins where I can only guess what's going on... I hardly want to look at these "guessing"... Disk IOs per device (IOs/second)What's an IO. I know it stands for input/output. But that's as far as it goes. Disk latency per device (Average IO wait)Not a clue what an "IO wait" is... IO Service TimeThis one is a huge mess, and it's near impossible to see something in the graph at all. Plugins where I understand the data but don't know what I should look out for IOStat (blocks/second read/written)I assume, the thing to look out for in here are spikes? Which would mean that the device is in heavy use? Available entropy (bytes)I assume that this is important for random number generation? Why would I graph this? So far the value has always been near constant. VMStat (running/I/O sleep processes)What's the difference between this one and the "processes" graph? Both show running/sleeping processes, whereas the "Processes" graph seems to have more details. Disk throughput per device (bytes/second read/written) What's thedifference between this one and the "IOStat" graph? inode table usageWhat should I look for in this graph? Plugins which I think to understand I'll be guessing some things here... correct me if I am wrong. Disk usage in percent (percent)How much disk space is used/remaining. As this is approaching 100%, you should consider cleaning up or extend the partition. This is extremely important for the root partition. Firewall Throughput (packets/second)The number of packets passing through the firewall. If this is spiking for a longer period of time, it could be a sign of a DOS attack (or we are simply recieving a large file). It can also give you an idea about your firewall performance. If it's levelling out and you need more "power" you should consider load balancing. If it's levelling out and see a correlation with your CPU load, it could also mean that your hardware is not fast enough. Correlations with disk usage could point to excessive LOG targets in you FW config. eth0 errors (packets in/out)Network errors. If this value is increasing, it could be a sign of faulty hardware. eth0 traffic (bits/second in/out)Raw network traffic. This should correlate with Firewall throughput. number of threadsAn ever-increasing value might point to a process not properly closing threads. Investigate! processesBreakdown of active processes (including sleeping). A quick spike in here might point to a fork-bomb. A slowly, but ever-increasing value might point to an application spawning sub-processes but not properly closing them. Investigate using ps faux. process priorityThis shows the distribution of process priorities. Having only high-priority processes is not of much use. Consider de-prioritizing some. cpu usageFairly straight-forward. If this is spiking, you may have an attack going on, or a process is hogging the CPU. Idf it's slowly increasing and approaching max in normal operations, you should consider upgrading your hardware (or load-balancing). file table usageNumber of actively open files. If this is reaching max, you may have a process opening, but not properly releasing files. load averageShows an summarized value for the system load. Should correlate with CPU usage. Increasing values can come from a number of sources. Look for correlations with other graphs. memory usageA graphical representation of you memory. As long as you have a lot of unused+cache+buffers you are fine. swap in/outShows the activity on your swap partition. This should always be 0. If you see activity on this, you should add more memory to your machine!

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• L2TP server - site-to-site vpn connection

  - by Pyro

  I am not sure this is the right place for this question but here goes. We want to connect users using an L2TP VPN connection to a users at the other end of a SonicWall site-to-site VPN. Currently we have a SonicWall firewall/router contraption in the home-office that is connected to a far-office over a VPN. Communications with machines in the home-office and far-office is fine. We also have an L2TP server running on the SonicWall that outside users can connect to. This gives them access to machines in the home-office. Communication between outside users and the home-office is fine. However outside users connected to the home-office via the L2TP server can't communicate with machines in the far-office. Will there need to be network bridging or routing needed? Or will this simply be a firewall setting to get this working? Thanks for any help or clues you provide! Rob

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• Best practices for re-IP'ing / migrating servers and applications

  - by warren

  Some of this question would be highly application-specific, but what approaches do you take when looking to migrate applications from one server/platform to another and servers form one network segment to another? For applications that can't be re-IP'd (many exist in this category), the general answer is to nuke and pave (or extend a clusterable application, then remove the segment that needs to be "moved"). For "normal" applications (httpd, mail, directory services, etc), what are the checks ou perform before, during, and after a move to ensure the health of the migrated app/server? An example with Apache: backup httpd conf directory change httpd conf files to use new IP address of server change (or add) IP of server restart Apache verify web server still serves pages reboot server verify environment comes back up healthy

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• Can not access Internet (DNS names do not resolve) after update today

  - by Aras

  I have been using Precise for a few weeks now for work with no problem. Today, I am not able to access any website using either wired or wireless connections. I installed the updates today which included nautilus, xserver, and a new kernel (3.2.0-24). After restarting I no longer was able to browse the Internet using firefox or chrome. Trying to ping google in terminal gives ping: unknown host google.ca I have tried: Connecting to wireless or wired networks (both working on other machines) Restart the machine and boot with previous Kernel Manually configure opendns on my wired connection Restart the network and the laptop and the wireless card Without any success so far. I am not sure where to go next. Please let me know the cause of the issue or help me troubleshoot it. Note that the laptop does receive an ip address, and it can ping ip address of google.ca (74.125.127.94) but not the domain name, or any domain name for that matter. This system was upgraded from 11.10 to 12.04 more two weeks ago.

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• The OTN Lounge at JavaOne

  - by Tori Wieldt

  This year, the Oracle Technology Network Lounge at JavaOne will be in the Hilton Ballroom, right in the center of the JavaOne DEMOgrounds. We'll have Java experts, community members and OTN staff to answer your questions. We've also even created a "Mini Theater" for casual demos from community members (and you too, if you ask nicely and we can fit you in). We'll have a detailed schedule up soon. We're waiting for you! Tori Wieldt (@Java) will be in the booth, doing interviews for the Youtube/Java channel. Sonya Barry (@Javanetbuzz) will be around with the Java.net experts. Yolande Poirier will be there to discuss Making the Future Java for the next generation of Java developers. What would the lounge be without swag? Scan your badge each day for a raffle of great prizes, and of course, we'll have OTN T-shirts and some surprises throughout the week. Follow @JavaOneConf for details and updates. The Java DEMOgrounds will show you the latest in Java technologies, from team members who create and maintain Java, including: Recent and upcoming features for Java SE GlassFish Server Open Source Edition Java EE in Action Next-Generation Applications Java EE 7, HTML5, WebSockets, Caching JavaFX: The Rich Client Platform Rich, Compelling UI with JavaFX on Embedded Systems Java ME Embedded: Small, Intelligent, Connected Cutting-Edge JDK 7 and Java EE 6 Support with NetBeans Oracle Eclipse Projects Come by, find a couch, charge your laptop and meet old and new friends.

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• SQL Server: Is it possible to prevent SQL Agent from failing a step on error?

  - by franklinkj

  I have a stored procedure that runs custom backups for around 60 SQL servers (mixes 2000 through 2008R2). Occasionally, due to issues outside of my control (backup device inaccessible, network error, etc.) an individual backup on one or two databases will fail. This causes this entire step to fail, which means any subsequent backup commands are not executed and half of the databases on a given server may not be backed up. On the 2005+ boxes I am using TRY/CATCH blocks to manage these problems and continue backing up the remaining databases. On a 2000 server however, for example, I have no way to prevent this error from failing the entire step: Msg 3201, Level 16, State 1, Line 1 Cannot open backup device 'db-diff(\PATH\DB-DIFF-03-16-2010.DIF)'. Operating system error 5(Access is denied.). Msg 3013, Level 16, State 1, Line 1 BACKUP DATABASE is terminating abnormally. I am simply asking if anything like this is possible in SQL 2000 or if I need to go in a completely different direction.

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• What FOSS solutions are available to manage software requirements?

  - by boos

  In the company where I work, we are starting to plan to be compliant to the software development life cycle. We already have, wiki, vcs system, bug tracking system, and a continuous integration system. The next step we want to have is to start to manage, in a structured way, software requirements. We dont want to use a wiki or shared documentation because we have many input (developer, manager, commercial, security analyst and other) and we dont want to handle proliferation of .doc around the network share. We are trying to search and we hope we can find and use a FOSS software to manage all this things. We have about 30 people, and don't have a budget for commercial software. We need a free solution for requirements management. What we want is software that can manage: Required features: Software requirements divided in a structured configurable way Versioning of the requirements (history, diff, etc, like source code) Interdependency of requirements (child of, parent of, related to) Rule Based Access Control for data handling Multi user, multi project File upload (for graph, document related to or so on) Report and extraction features Optional Features: Web Based Test case Time based management (timeline, excepted data, result data) Person allocation and so on Business related stuff Hardware allocation handling I have already play with testlink and now i'm playing with RTH, the next one i try is redmine.

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• Backup to disk, encrypted, without any installed local software

  - by user30064

  Hi, Ok, this is a tough one, and it might not even be possible, but no harm in asking I guess. I have a Buffalo Terastation file server that I use for network attached storage. After a couple of phone calls to customer services I realised that there is no way to backup to disk encrypted. In effect, I would be carrying unencrypted company data off-site daily, which is obviously unacceptable. I had a go at TrueCrypt, EncFS, and a few others, and as far as I could see all of them required that you install some software on the machine that is to use the file system, which makes sense. Unfortunately the firmware on the Terastation is closed and I cannot install any software (and I can't build from source either, since Buffalo didn't include a compiler). Are there any ways to copy files to disk, where as soon as they are written to the disk they are transparently encrypted, without having to install additional software? I'm not sure it matters too much, but the Terastation firmware is Linux based, although as I mentioned, closed. Many thanks, Andreas

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• Best way to use my windows box as a backup?

  - by user29336

  I put a 1.5 TB HD in my Windows 7 box and my main computer is a MBP. I have a lot of professional files/folders in a FireWire 800 external HD connected to the MBP and I want to use the 1.5 TB HD in my Windows 7 box as a backup for both the HD and MBP. Right now I am just copying files manually to the HD over the network and that's very slow and open to failure (not rsync'd.) Anyone suggest some appropriate solutions? Should I just figure out how to setup RSync on the windows box or is there a better alternative? Thanks!

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• MySQL Workbench sends computer name with login not IP

  - by Android Addict

  I am attempting to connect MySQLWorkbench to a remote MySQL Server. The server has granted access to user@IPAddress However, when I try to connect MySQLWorkbench, it sends user@computername instead. How do I configure the connection to use the IP address instead in MySQLWorkbench? Reference: The remote server is on the local network, so I need to use the local IP address assigned to my client. EDIT What I have tried so far: from the server: mysql -u user@IPAddress -p --host=(ServerIPAddress) Returns: mysql> So that tells me the user account is operational. Furthermore, I confirmed it exists using: select user from mysql.user; returning a table of all users, of which the user I am using is present. I have also opened the port 3306: sbin/iptables -A INPUT -i eth0 -s clientIPAddress -p tcp --destination-port3306 -j ACCEPT Still I encounter Access Denied

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• Verify server performance

  - by George Kesler

  I'm looking for a quick and SIMPLE way to verify that new servers are performing as expected. The most important metric is disk performance, second is network performance. I’m trying to prevent problems caused by misconfiguration of RAID arrays, NIC teaming etc. The solution should work with both physical and virtual servers. I don’t need sophisticated analysis with different workloads, just one set of benchmarks which I would run against a reference server and later compare to new ones. One problem is that most benchmarks are not giving accurate results when running on a VM.

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• Advise about performance for local or remote SQL Server?

  - by TruMan1

  I currently have my web server and SQL Express / MySQL server on the same server. It is on a VPS. I have been having problems with my hosting so I am thinking of separating the web and db server into 2 VPS servers. Does anyone recommend this? I am worried that changing my setup from a local DB server to a remote one will degrade performance heavily. They will not be on the same network, but will reference each other via an IP address. Anything I should be aware of?

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• Tips for teaching Linux to beginners?

  - by chiborg

  I will teach Linux to people of the ages 20-75 with no prior Linux knowledge. I want to teach some basic concepts (what's an OS, what's a file system) and some practical knowlede: How to install it, network configuration, set up email client, installing software with a packet manager, etc. I have held a system administrators course in the past, but was under the impression that my method of teaching was not adequate. I've explained what I was about to show, showed students on the projector, told them to repeat it on their computers and summarized what they should have learned. They could ask questions all the time. But I fear they remembered only one-third of the knowledge I taught them. I have two questions here: Are there better methods to teach this particular subject in a classroom equipped with computers? Are there some tricks that "slow me down" when I teach stuff that I know inside-out?

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• Connect to virtual host computer from within virtualbox

  - by Nicky De Maeyer

  I'm currently developing on an ubuntu karmic. For this I've installed lampp with a virtual host on apache so http://myproject/ is mapped to my project's root directory. Now to test the website in IE I've installed an XP machine on a virtualBox OSE. Ive managed to get the virtual host working on the XP by adding its to the hostfile, like this: 255.255.255.255 myproject where 255.255.255.255 is the ip adress of the host computer (my ubuntu). Now every day when I come to work and plug in my computer to the network, my IP has changed. so When i boot the XP I have to change the IP in the hostfile to my new IP. Is there any way where I can set the ip to somthing the XP will recognise as the host machine? I've tried replacing the IP in the hostfile by the host computer name, but that does not seem to work... This would make my like a bit easier :)

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• Edimax wireless router is not providing DNS services correctly

  - by Nathan Fellman

  I have an Edimax router that is set up to connect to the internet via L2TP on cable, and on the LAN side it's set up as a DHCP server. The DHCP server gives correct IP addresses, but it sets itself up as the DNS server. However, it doesn't provide the DNS service. I am sure that it's a problem with the router, because I have two computers on the network with the same problem. I see that on the WAN side it gets correct DNS addresses from the ISP, so I'd expect the router to either pass these addresses through to the DHCP clients, or to serve the DNS requests itself by forwarding them to the ISP's DNS. However, it apparently does neither, and there is no DNS. I switched from ADSL to cable last week. On ADSL it connected using PPPoE, and the DNS worked fine. What can be the problem here?

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• Why Mac cannot connect to Iphone?

  - by martin08

  I couldn't always ssh to my iPhone from my Mac. They're both on the same wifi network but sometimes the connection is established, sometimes it failed. From my Mac: $ ssh [email protected] ssh: connect to host 192.168.0.102 port 22: Operation timed out $ ping 192.168.0.102 PING 192.168.0.102 (192.168.0.102): 56 data bytes ping: sendto: No route to host ping: sendto: Host is down ping: sendto: Host is down I enabled SSH on the phone and am sure it can load webpages. So what might be a reason why they cannot connect? Thanks

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• Product Update Bulletin: Oracle Solaris Cluster October 2013

  - by uwes

  Announcing new qualifications and general news for the Oracle Solaris Cluster product. Hardware Qualifications Sun Server X4-2 and X4-2L servers, Sun Blade X4-2B server module with Oracle Solaris Cluster 3.3 Sun Storage 16 Gb Fibre Channel ExpressModule Universal HBA, Emulex Oracle Dual Port QDR InfiniBand Adapter M3 Software Qualifications Oracle Database 12c Real Application Cluster with Oracle Solaris Cluster 4.1 Oracle Database 11.2.0.4 single instance and RAC with Oracle Solaris Cluster 4.1 Oracle VM server for SPARC 3.1 SAP Netweaver with new kernel versions ZFS Storage Appliance Kit version 2011.1.7.0 and 2013.1.0.0 Application monitoring in Oracle VM for SPARC failover guest domain Storage Partner Update Oracle Solaris Cluster 3.3 3/13 with the HDS Enterprise Storage arrays EMC SRDF for Oracle database 12c RAC in Oracle Solaris Cluster 4.1 geo cluster configuration Oracle Solaris Cluster References Korea Enterprise Data, HDFC Securities, Dealis Fund Operations Web Updates New blog entry: Oracle Solaris 10 Brand Zone cluster Solaris Application Engineering website now includes Oracle Solaris Cluster application support information Please read the Oracle Solaris Cluster Product Update Bulletin on Oracle HW TRC for more details. (If you are not registered on Oracle HW TRC, click here ... and follow the instructions..) _____________________________________________________________________ For More Information Go To:Oracle.com Oracle Solaris Cluster page Oracle Technology Network Oracle Solaris Cluster pageOracle Solaris Cluster mos communityPartner web Oracle Solaris Cluster pageOracle Solaris Cluster Blog Solaris.us.oracle.com page

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