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• Boot another OS e.g. Windows *once* on a dual-boot machine

  - by user974312

  I have a dual-boot machine with Windows and Linux on it. It doesn't reside at my hand, instead , it's placed in the datacenter which I have to access remotely. For most of time, I work on Linux. But there is some occasion that I have to use the Windows OS on it. Here is the problem. I hope to do all those following things remotely. Do some magic to Grub. Reboot the machine from Linux. Grub boots Windows. Access Windows remotely. Work done. Reboot the machine from Windows. Grub boots Linux. So I wonder whether I can set the booting target at the next time, for only once? Thanks.

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• How to configure something like "Reflexive ACL" on OpenBSD?

  - by Earlz

  My U-Verse modem has something called "Reflexive ACL" described as Reflexive ACL: When IPv6 is enabled, you can enable Reflexive Access Control Lists to deny inbound IPv6 traffic unless this traffic results from returning outgoing packets (except as configured through firewall rules). This seems like a pretty good way to keep from having to maintain a firewall on each computer behind my router that gets handed an IPv6 address. It sounds about like a NAT, which for my small home network is all I want right now. Now my modem sucks as a router though, so I'm in the process of configuring an OpenBSD router to do that. I've got IPv6 supported and all that and my OpenBSD router will hand out IPv6 addresses by rtadvd. Now I want to keep people from having instant access to my local network through IPv6. How would I best do something like Reflexive ACL with pf in OpenBSD 5.0?

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• Delegation Permissions to admins in Active Directory/Taskpads

  - by user1569537

  I am trying to provide taskpads to few admins to operate on few tasks delegated to them at OU level.I ran into the following problem; lets say i delegated access to the admin on OU X and which is ability to modify groups such as sample group X1 , he must be able to add any users from OU X to the group X1. The issue here is while testing i found out the admin can do the above but also can add a user Y1 from the OU Y(which he doesnt have delegated permissions) to the group X1.What am i missing? how to restrict admin from adding users out of OU to the groups he has modify access to? Please ask me if any more details/clarification required.

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• CMD file time not always matching windows explorer file time

  - by skyrail

  I have a set of file I need to set the created, modified and last access date to exif date taken value, after a copy between 2 folders (might be fat32 on memory card or ntfs on fixed or usb disk). When I copy a file, the date and time switch to the current date. Then I change all 3 dates manually, either with change attributes in windows explorer or far manager on the command line. To make it faster I wrote a batch script getting original file dates (with php and function stat), building a batch script that invoke nircmd setfiletime for each file. Then I apply this batch to the copied version. The operation is relatively fast and reliable. Unfortunately, a bunch of files have last access and created time different in cmd and windows explorer (1H difference). Very strangely, it happens with dates between november and february, which make the operation unreliable. Why is this happening, and how can I fix it?

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• Exchange 2010 Discovery Search Fails

  - by ITGuy24

  When ever I run an Exchange 2010 SP1 Discovery Search I get the following error: "Search failed as the results link to the target mailbox '[email protected]' couldn't be generated." I have checked to ensure the discovery mailbox is enabled I created a new Discovery mailbox. I get the same error with both Mailboxes. The user account I am using to run the search is a member of the "Discovery Management" security group. I get the same error whether I use the Shell or the ECP to run the search

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• How SmartDNS Works

  - by Emad

  If you travel outside the US you'll notice that most of the streaming services like Netflix, Pandora, hulu etc are blocked, usually by the service providers themselves. To get around that, people use VPN services. They basically tunnel your traffic through a US server so your requests seem like they are originating in the US. These VPN services fix this blocking problem, but make your connection slower than the normal unVPNed connection. Recently however I've come across something called SmartDNS provided by overplay.net. You pay $5 a month and you get access to their DNS servers. After you change to their DNS you get access to the blocked streaming sites, without slowing down your normal traffic like email and browsing. What I'd like to know is the technical details of how this SmartDNS works. I've done some quick research but that didn't turn up anything of substance. Anybody out there knows?

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• Connecting desktop computer to the internet through laptop wifi

  - by Josh

  Due to some home network complications I have had to move my router to a seperate part of the house, therefore the wired network I had set up can no longer work. Before I find the time to go out and buy a Wifi adapter for my desktop PC, I have a laptop that uses a built in Wifi card to connect to my router and this can connect to the internet, and I was wondering if I could somehow access the internet on my desktop PC via my laptop. I'm hoping for a not-so-complex solution as this will only be set up for a few days, but it is quite vital that my desktop computer gets internet access. Does anyone have experience in this sort of thing and can help me out? Thanks.

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• Windows 7 migration: How to move application settings?

  - by FrustratedWithFormsDesigner

  Migrating from WindowsXP Home to Windows 7 Pro. The last bit that I'm stuck on is migrating application settings, such as the settings for Opera, Firefox, MSN Messenger, and others. On the XP system, this all seems to be in "user/Local Settings" and "user/Application Data". On the Windos 7 system, there is a "user/AppData" folder as well as "user/Application Data" and "user/Local Settings". When I try to access "Application Data" and "Local Settings" on Windows 7, I get an "Access Denied" error (even though my user is an admin). So... if I can't copy my application settings files to "Application Data" and "Local Settings" on Windows 7, where to I copy them to?

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• Server Running but unable to log in to it

  - by Funky Si

  I have a Windows Server 2003 server that is running sql server. Users can access the databases running on it fine, but I am unable to log on to it by remote desktop or directly at the machine. I am able to view the event logs remotely and I can't see anything that shouts out as being a problem. What options can people think of for regaining access to this server or finding out more information about the problem? I am able to reinstall the operating system but would like to leave that as a last resort.

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• system center operations manager (SCOM) role combinations

  - by KAPes

  We are evaluating system center operations manager 2007 R2 product, and would like to know what all roles can be combined onto single server. Like root management server and reporting servers can be on one box or not? my environment is like 450 servers mostly Exchange and Domain Controllers plus few OCS servers.

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• How do I estimate the number of RSS subscribers?

  - by Robert Kosara

  I'm running a website, and would like to get a better idea how many subscribers I have. I can check the number of subscribers on Google Reader for my two feeds (RSS and Atom). I also have access to my server logs, so I sometimes collect all the IP addresses that access the feeds over a month or so and do a uniq. Is that an accurate way of doing this? Are there other feed aggregators that I need to take into account? Any pitfalls when just going by IP address? I've also thought about embedding an image in the feeds to get a better count. But do all feed readers load images automatically?

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• Cross subnet connection

  - by user30472

  My internal Windows 2008 AD network is 172.20.xxx.xxx My Apple Wireless base stations only allows DHCP 172.16.xxx.xxx Private IP address ranges: 10.0.0.0 to 10.255.255.255 172.16.0.0 to 172.31.255.255 192.168.0.0 to 192.168.255.255 The problem: The internet works from my IPad that has a 172.16.xxx.xxx address, but I can't access (browse) my tools server that is 172.20.xxx.xxx that host my Filemaker database. Is it possible to add 172.16.xxx.xxx range somewhere in DHCP or DNS on my Windows domain server so I can access tools? Or is there another way to make this connection work? Thanks

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• Cant remove/delete symlink

  - by user477519

  I have tried to create a symlink and it threw this error: ln: accessing `.test': Permission denied Now I can't unlink or delete the symlink file. Tried Googling for help but could not find a solution. Please find the results of following commands. stat .test : File: `.test'stat: cannot read symbolic link `.test': Permission denied Size: 26 Blocks: 0 IO Block: 16384 symbolic link Device: 1fh/31d Inode: 312075453 Links: 1 Access: (0777/lrwxrwxrwx) Uid: (11160/ chatt) Gid: (11307/ pgr) Access: 2012-11-12 11:36:51.167327500 +0000 Modify: 2012-11-12 11:36:51.163331700 +0000 Change: 2012-11-12 11:36:51.163331700 +0000 Birth: - chattr -i .test: chattr: Permission denied while trying to stat .test lsatter .test lsattr: Operation not supported While reading flags on .test Any help would be appreciated. Thanks

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• Crossplatform "jail" for an application

  - by Alexander

  We currently have a variety of systems (Linux, Solarix, *BSD, HP-UX ...) on which we are not allowed to install anything into / (but I have root access. That's strange, I know). But we'd like to run Puppet on all of them. So, the obvious idea is to install Puppet with all prebuilt dependencies into some isolated tree, something like "jail", which will allow to use dependences from some prefix and to access the host system. The big advatanges would be uniform deployment and updates. One solution that came to my mind is to deploy Gentoo Prefix, and install Puppet there with package manager. However, this requires a lot of extra space and some manual patching for each system. Maybe there are some more elegant and simple solutions?

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• netbook losing internet connection

  - by cometbill

  I have a netbook that occassionally, usually once or twice a day, maybe more, will lose its internet connection while I am on Skype (that's when I notice it most, it may happen more often). The little yellow dot appears over the networking icon in the system tray, which when I click on it says no internet access at the top of the popup menu, and next to the router connection that I have. Disconnecting and reconnecting usually rectifies full internet access again. I'm not sure if leaving it for any amount of time allows the netbook to automatically reconnect again. Everything seems fine with my laptop. I don't think this loses connection in the same way. I'm using Windows 7 home premium.

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• Is it possible to know a user logged in on Ubuntu instantly?

  - by Mustafa Orkun Acar

  In fact, I am trying to restrict access to some websites for different users. I asked the question: Restrict access to some websites for different users. The given answer is ok; but as the owner of answer says, it works if users are locally logged in. That is; if the user logs out and logs in, restrictions are no more valid. So, I decided to run a script including the iptables commands for restrictions at every log in event. I want to know whether it is possible to know instantly the user logs in.

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• Site Action Button Missing

  - by David

  I have a Moss 2007 site collection which was running smoothly. However, after moving to Forms Authentication connected to Active Directory neither my Farm Administrator account nor the 2 Site collection administrators can get past the site homepage. There is no Site Action buttons availabe. When I log into CA witht he Farm Administrator account the Site Action button exists there so I suspect its something to do with the permissions to the site application. I have tried to connect directly to the settings URL http://mysite/_layouts/settings.aspx etc but get the ususal error Error: Access Denied Current User You are currently signed in as: xxxx (Farm Administrator Account) Sign in as a different user Request access I get the same error when logging in with the site collection admin accounts. Ive also checked to make sure that the sites are not locked out.

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• Home Directory Folders

  - by George

  I am looking for a way to acomplish the following: Currently users have home drives mapped via AD profile as follow: \\fileserver\users\username However if once a user was able to access \\fileserver\users and view everyones folder, but had no access to them. This is not ideal since we have people saving important stuff to on their drives. How can I restrict users permissions and views only to THEIR home drives? I also saw this solution, but not sure if it would apply to me: ================================================================================ Share level permissions - Everyone full permission and remove all others On the file/folder level set the following: Authenticated users special permissions on the root of the \\server\homeshare\ to Check the boxes next to the following: Traverse folder / execute file List Folder / read data Read attributes Read extended attributes / List item All other boxed leave unchecked and make sure you apply "This Folder Only" Domain Adminsfull rights and apply “this folder, subfolders, and files” This will block the users from accessing other user home directories. When you create the new user and set the home directory it will create the folder for you with the correct permissions.

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• Broadband Traffic Question

  - by rutherford

  I have a broadband ADSL line with plus.net in the UK. Having checked the modem there is no firewall or any weird features enabled. But since I arrived at the apartment (the broadband already being installed), I cannot log into Twitter nor update any of my wordpress blogs (I can browse them and log in, but cannot save any edits or new posts). It only seems to affect these two sites in their unique ways. If I take the netbook I use in this place out to say a McDonalds or some other wifi access point then these sites work fine again. Anyone know what could possibly be preventing access of the pages in question? The only thing common to these pages are the POST response they are expecting. But POST form submission works fine on other sites...

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• Fixing Broken Groups

  - by themaestro

  Hey, I just got onto a new project with the student government at my University and we're trying to get our webserver into a more workable state. The current problem is that all of us for some reason have sudo power on the server, but we can't write/create files anywhere on the server (as far as we can tell) currently. Our groups are currently as follows: /srv/ice/db$ groups goshri sshamim rmenezes goshri : goshri sshamim : sshamim ptx rmenezes : rmenezes ptx daifotis : daifotis ptx We added a few of us to ptx because we thought that might give us write access but it didn't. We have a bunch of webapps running on this server but since it's university things change hands quickly. What can we do to give us read access?

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• Are there any well known anti-patterns in the field of system administration?

  - by ojblass

  I know a few common patterns that seem to bedevil nearly every project at some point in its life cycle: Inability to take outages Third party components locking out upgrades Non uniform environments Lack of monitoring and alerting Missing redundancy Lack of Capacity Poor Change Management Too liberal or tight access policies Organizational changes adversely blur infrastructure ownership I was hoping there is some well articulated library of these anti-patterns summarized in a book or web site. I am almost positive that many organizations are learning through trial by fire methods. If not let's start one.

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• Resources for a new Windows Small Business Server administrator?

  - by 80bower

  I've recently taken over management of a Windows 2003 Small Business Server and network for a small, less than ten person company. I have some (antiquated) sysadmin experience, but I've little experience with Exchange. The documentation of the existing infrastructure leaves much to be desired, and I was wondering if there's any sort of "So you've just become sysadmin" guides that anyone could recommend.

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• Help w/ error "Account exceeded bandwidth limits" Thunderbird 3 + Gmail

  - by boo

  Over the past two days I have been receiving the following message on a new computer running Windows 7: Account exceeded bandwidth limits. (Failure) Whenever I try to access my emails through Thunderbird, this is followed by: Login to server imap.gmail.com failed. Credentials are correct as I have access via HTTP. And then it requests me to enter my password (I have also unlocked the captcha on this account, but this didn't stop any error messages) I'm looking for a details on why this is happening, to prevent it from reoccurring, such as whether this is specific to something in Thunderbird 3 or google?

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• Download of ~100MB file from Joomla + Docman component is incomplete (sometimes)

  - by Knix

  Hi, I hope this is right place for this. I am currently running Joomla v1 with a file management component called Docman on a Bluehost server. Some users (particularly with slower download speeds) are experiencing partial file downloads with some of my larger files (~100MB). I would like to keep the Joomla + Docman installation. Is there anything I can do to resolve this issue? I would greatly appreciate any recommendations that you may have. Thanks, Knix

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• Update a DNS to a for a dynamic IP

  - by zobgib

  I want to use my schools connection as a place to host a small webserver but one problem I have run into is anytime my server reboots I am given a new IP inside the schools range. All of the schools IP are public and therefor I can access my computer directly over WAN just via the IP given in ifconfig. I would like to be able to give my computer a dns which is easy enough when I change the Arecords to match the current IP of my computer. The problem is if my computer ever reboots (my school regularly cycles power at night and over holidays) I am assigned a new IP and have to realize it then update the Arecords This is inconvenient and I figure there must be a better way to keep the DNS records updated either via a script or my own BIND server. That way if there is a power cycle I can still access the server via a Domain Name. If you have any direction to point me in it would be much appreciated. I am running Ubuntu 10.04 if that helps :).

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