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• Can arbitrary email addresses be stored in AD userPrincipalName?

  - by Rob Potter

  I have a web app that is front-ended by ISA, natively authenticating against AD. All users currently log on with sAMAccountName. I would like to allow users to provide a personal email address and be able to authenticate against this instead. From what I understand the AD userPrincipalName is typically used for an internally generated logon name, which by convention, is often their internally generated email address. The web app that I have is web scale (circa 3 million accounts*) and not an internal, corporate app, so the email addresses will be from diverse domains. Can I just set the AD userPrincipalName attribute to the user's email address, and then will ISA natively authenticate against this attribute instead? I heard rumours of AD having a maximum number of domain suffixes that it allows in AD userPrincipalName...? (presumably it catalogues them). [*I realise that AD is not the ideal authentication directory for a user population of this scale.]

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• Can I fully disable my PCIe Video/Graphics Card per BIOS/Software?

  - by Jook

  Because of a quite noisy fan of my HD6700 I was wondering, if I could fully disable my video card through BIOS or even some Software/Windows. Switching to Intel I7 2600 internal video helped already with the noise, but it would be great to have the HD6700 only build in, but not activated/powered. So that the fan could stay compleatly off. Of course, I could just remove the video card, but I would like to avoid that. Is there any way? My Mainboard is an ASUS P8H67-M Pro, with Intel I7 2600 and ATI HD6500

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• Sync Music to External Hard Drive with Windows Media Player

  - by dtbarne

  I'd like to sync my music from my internal hard drive to an external hard drive. Windows Media Player doesn't recognize my USB external hard drive as a syncable device. If I plug in any USB flash drive, it shows up as a device, but I can't seem to get it to recognize my external hard drive. Per some googling suggestions, the only suggestion I came across was to try enabling the "Portable Device Enumerator" service, but that yielded no luck. Is there any way to sync my music from WMP to an external hard drive?

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• TCP/IP performance tuning under KVM/Qemu

  - by vpetersson

  With more and more companies switching to public cloud services, I'm curious what you guys' thoughts are on TCP/IP tuning in the cloud. Is it worth bothering with? Given that you don't have access to the host-server, you're somewhat limited I presume Let's say for the sake of the argument that you're running three MongoDB-servers in a replica-set on FreeBSD or Linux that all sync over an internal network. I'd also be curious if anyone made any actual performance benchmarks to back up their arguments. I benchmarked the various network drivers available for KVM/Qemu here, but I'm curious what the gurus here suggest to tune further. I started playing around a bit with the tuning-recommendations as suggested over here, but interestingly enough I saw a decrease in performance, rather than an increase, but perhaps I didn't fully understand the tweaks. Update: I did a few more benchmarks and posted the result here. Unfortunately the result wasn't really what I expected.

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• my WD Mybook wd5000h0032 is DEAD?

  - by Herudae

  Hello, i have a WD Mybook Premium (wd5000h032) it used to work just fine but suddenly i can't access to it. The blue lights turn on but the drive doesn't start, it makes no click, nor any other sound, it just like if it was disconnected from USB, of course my PC doesn't detect it, i've tried with trhee different USB cables two PCs and one laptop and nothing. Is it really dead? how can i recover the information stored there? i think the problem could be the case, if so, could i take out the disk and connect it as an internal drive? or could i buy another case?

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• What is the worst Mac OS X annoyance in your opinion?

  - by jasonh

  I'll start with multi-monitor support. I'm trying to set up a Macbook to use an external display and I can't for the life of me get it to move the Dock over to the external display. That and it won't let me disable the Macbook's internal LCD. Please put one item into each post so that the community can vote on each issue. Also please list any workaround if you have it and what version of the OS it applies to. Thanks!

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• Sharepoint 2010 web front end servers and services configuration

  - by Yash

  I have a sharepoint insfrastructure where a document library is made available both locally and on the internet. I have a few web front end servers facing the public (in the DMZ) while having another set inside the secured network for internal use. I also have an application server for sharepoint services inside the secured network. My goal is to configure sharepoint in such a way that the sharepoint services are available only locally and not via the internet. The users accessing the system online should not benefit of the sharepoint services. Is this possible on the same farm?

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• Piping the output of a program to Preview.app

  - by Abhay Buch

  I'm using an application (the dot program of the graphviz library) that generates a wide variety of file formats including PostScript and PDF. It can send the result to stdout or to a file. I'm currently sending it to a file and opening it with Preview. Is there any way to pipe the output and have it be read by Preview, so that I'd don't have to generate a file and have it lying around? This is going to be used by a number of people who won't know the internal structure of the generating script and I don't want to clutter their folders or complicate their lives. More generally, is there any way to take a program that sends its output to stdout and pass that output to an program that usually takes it's input from a file, without actually creating a file?

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• Bound external Cisco CIGESM ports to a specific BladeServer

  - by Vinícius Ferrão

  We have an IBM BladeCenter with 14 blade servers and one external Cisco CIGESM for Ethernet connectivity. Since this hardware is a little old, we will use it for other services, and we want to run a pfSense instance on one of the blades. It's just an Firewall Appliance, but it needs two network interfaces: one for the WAN and the other one for LAN access. Our architecture works on top of static routes, we don't use NAT, so we got the WAN IP in one interface routing to the another one. The main problem is how to plug the WAN cable in one of the four external ports and make it exclusive to the blade server containing the firewall. And we also need an exit port that goes through a 3COM 4200G switch that makes the internal routing and VLAN separation. Thanks in advance

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• How to connect a remote IP Phone to our VOIP Network?

  - by Mistiry

  We have an IP phone system in our office, and about 8 VoIP phones running on the system. We have a remote worker, who is literally states away. We'd like to connect his phone to our VoIP network, so that he has a business phone and an extension to which we could transfer calls. I was thinking, although I don't know for sure, that a pair of Cisco routers could be used in some way to make this work. I imagine a VPN solution, where I have one router connected to the phone network and the other router connected to the remote phone. Then have a site-to-site VPN set up so that the remote router... And that's where I'm stuck. I know the remote router will need to use the DHCP server of the phone system. I've never set up something like this, so I am seeking the help of the community here. What is the best way to get this remote VoIP phone RELIABLY connected to our internal VoIP network?

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• Remote Control Home PC from Corporate Work PC

  - by muncherelli

  Here is my situation: I am currently on a Windows XP workstation at work. I have an android tablet that I use to splashtop into my home PC. I would like to be able to use my work keyboard and mouse to control my home PC while I am splashtop'd into it using my tablet. My work PC is on a corporate LAN, and not on the same network as my tablet. The company I work for provides wifi for personal devices, but they are not accessable to the internal network. I thought about going the Synergy route, however that would require my home PC to be able to connect to my work PC which isn't really possible. The opposite would work though, if I could reverse connect the server to the client, but the Synergy software doesn't really support that. I do have a couple linux boxes running at home, so I can ssh into my home network and tunnel ports via SSH if needed. With what I have, how can I accomplish seamless keyboard and mouse sharing between my work PC and either my home PC or my android tablet?

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• Behaviour of nginx as proxy

  - by HD

  I'm testing nginx with different configurations to replace an architecture working with squid + apache. I know that I can use nginx to manage static requests and load balancing but I'm interested in one particular solution that I don't understand clearly: I'm using 2 nginx servers (balanced) with the proxy_pass setting to pass all requests to an apache server. When one client makes a request to the site one of the nginx servers process it and send it to the apache server. Now, how this behaviour could be an improvement to my system?, it seems that all requests are passing through apache and I don't see benefit at all. What happens when 100 simultaneous connections pass through nginx? The 100 connections will be going to the apache server or is some kind of internal behaviour that allows an small impact into apache?

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• What's wrong with my MAC address?

  - by Shaul

  I have a D-Link DSL-2650U router, and exactly one computer on the network. For reasons of port forwarding I want to give my computer a static internal IP address, so that I don't take the chance of losing my NAT settings every time the computer reboots. So here's a screen shot that summarizes the entire problem: WTH is wrong with my MAC address? It's copied and pasted from the command prompt window! I tried editing out the dashes, but it still doesn't work. Am I doing something wrong, or is there a bug in the D-Link firmware?

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• Decent 1gb switch (16-24 port) for rack...

  - by TomTom

  Hallo, for a rack containing a smaller nubmer of servers (5 at the moment, going to stay in this area), I look to replace the currently aging 100mbit switch with a 1gb switch. This is for the backend between the servers. I expect some ISCIS traffic there ,so a 10gbit option would be nice (preferably for two ports, as extension modules). I dont need management, this is a pure backend of an internal cluster. I do VLAN, but there is no sensible management the switch can do there. I wuold like: * 1he only, obviously * preferable limited moving parts. * Low price ;) * Enough power to run at least half the ports in full speed at the same time. Anyone any recommendations?

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• Appropriate Network switch for small server cluster

  - by Chris Dutrow

  Need to build a small business server cluster for the purpose of crunching data. It will not host a web site that needs to be available 24/7. It does need to support servers that host Redis, a Cassandra database cluster, and a Python web server. Operating system will most likely be Centos 6.4 Other servers in the cluster should be able to communicate very fast with each other, especially the Redis server. This will probably require the use of internal IP addresses. We will need to use multi-data center replication to synchronize the Cassandra cluster with the one that we currently have hosted on the cloud Was looking into network switches and we are unsure of the appropriate specifications that we should be looking for. Does the switch need to be "managed" or can it be "unmanged"? Does the switch need to support IPv6 or just IPv4? Do we need an enterprise level Cisco switch, or can we go with something like a $200 DLink managed (or unmanaged) small business switch? Thanks so much!

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• Plesk directory structure problems

  - by johnnietheblack

  I have an entire website with the following directory structure: /example.com /html (public) /css /js index.php /lib session.php other_lib_files.php /views index.php /models /controllers As illustrated, the html is public, and anything above it is private. My site now needs to upgrade servers, and the new server (Linux w/ Plesk) has the following structure (reduced to the problematic parts below): /myplesksite.com /httpdocs /css /js index.php /private /lib /models /views What I would THINK is that I should be able to put my /lib, /views, /models, etc in the directory directly above /httpdocs, the same way I had it in my previous server. Is that possible? Or do I have to put it in private? I would really love not to have to adjust my internal paths throughout the site if not necessary...

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• OpenVPN route missing

  - by dajuric

  I can connect to an OpenVPN server from Windows without any problems. But when I try to connect from Ubuntu 12.04 (start OpenVPN) I receive the following: OpenVPN needs a gateway parameter for a --route option and no default was specified by either --route-gateway or --ifconfig options SERVER IP: 161.53.X.X internal network: 10.0.0.0 / 8 What I need to do ? client configuration: client dev tap proto udp remote 161.53.X.X 1194 resolv-retry infinite nobind ca ca.crt cert client.crt key client.key ns-cert-type server comp-lzo verb 3 server conf: local 161.53.X.X port 1194 proto udp dev tap dev-node OpenVPN ca ca.crt cert server.crt key server.key # This file should be kept secret dh dh1024.pem # DHCP leases addresses to clients server-bridge # Push routes to the client to allow it # to reach other private subnets behind # the server. Remember that these # private subnets will also need # to know to route the OpenVPN client # address pool (10.8.0.0/255.255.255.0) # back to the OpenVPN server. push "route 10.0.0.1 255.255.0.0" client-to-client duplicate-cn keepalive 10 120 comp-lzo verb 6

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• VPN is working, except for DNS lookups. Firewall (Cisco ASA 5505) issue?

  - by macke

  I've got the following set up: LAN -> DHCP / DNS / VPN server (OSX 10.6) -> Cisco ASA 5505 -> WAN Connecting to the LAN via VPN works fine. I get all the details properly and I can ping any host on the internal network using their IP. However, I can't do any host lookups whatsoever. I've looked through the logs on and found this nugget in the firewall log: 3 Sep 08 2010 10:46:40 305006 10.0.0.197 65371 portmap translation creation failed for udp src inside:myhostname.local/53 dst inside:10.0.0.197/65371 Port 53 is dns services, no? Because of that log entry, I'm thinking that the issue is with the firewall, not the server. Any ideas? Please keep in mind that I have very little knowledge and experience with this kind of firewall and the little experience I do have is with the ASDM GUI console, not the CLI console.

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• how to resolve all externally unresolved DNS queries ?

  - by red eyes dev

  I am using PowerDns on a Linux box (Debian 6). I would like to set up the powerdns server to resolve all externally unresolved DNS queries to a given, internal host. Is this possible? How is it done? I think it's necessary to use pdns-recursor, but my configuration file doesn't works ! I use mysql for backend. I add manually google.com and it's works, but if I delete entry I have "server failed", root dns (or isp dns) don't answer me.

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• What happens if an OpenStack cloud controller dies?

  - by magu

  I've been reading up on OpenStack and how we can re-create an EC2/S3-style cloud for our internal development and I'm having a hard time finding information on how the OpenStack cloud controller provides redundancy of the cloud management services. I know I can setup multiple Swift and Nova nodes, but not a single document/article/howto/wiki contains information on: a) what happens if the cloud controller node dies; and b) how to setup redundant cloud controllers. It seems to me that, although it is massively scalable, there is a big single-point-of-failure built into OpenStack. Can anyone with more experience on OpenStack please shed some light as to how it all works in regards to high-availability?

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• Can Office Project Server 2010 handle issue tracking?

  - by JL

  I have a scenario where I want to be able to allow customers to login to a customer facing portal on the web, and log issues / bugs. Internal team members should then be notified via email and the issue should be logged in Project Server. The ticket status should be Open, until either resolved or close, where the customer will be notified via email. Is this possible to do using Microsoft Project Server 2010? The question could also be can customers submit bugs to office 2010 projects via a custom web form of some kind, and can project handle the back-end gracefully.

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• Taking over and Moving a PHP site

  - by KCavon

  I have a internal use PHP site at my new position. It only runs a few days a year off site so we keep it on laptops. The hardware it has been on, a 8 year IBM Thinkpad running Fedora, is dying. I have new Lenovo Thinkpad's running latest and greatest Ubuntu. I have copied the contents of var to a shared drive, renamed the old www folder in var on the new machine and copied over the old www folder. I can get to the login page and into the site, but when I look something up it returns Cannot Open. I know I cannot get to the MySQL in the new machine because users and passwords dont match. The version of the PHP from the old machine is before the setup script was included. I know very little about PHP. I am looking for input on the proper way to link the old PHP files to my mysql instance. Any help, much appreciated.

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• Filtering serial port io

  - by mr odus

  I am currently working on a project where I communicate with hardware via a com port on its respective pc(win xp or 7) It is a fairly large project and sifting through the log file can be a bit of pain. This is my current setup. I use putty to do the actual serial communication, and write it to a log file. Then using MinGW Msys I filter it using tail -f "puttyLog" | grep -i "search term" Is there a better way to do this? I mean specifically filtering the input in realtime. Not that mine is terrible, but it still involves having to read from a log and sometimes there have been hangups where it will be delayed for a minute or 2. I have used software in the past with a main io window and then internal filter panels, but can no longer remember or find it.

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• end_request: I/O error, dev sda, sector xxxxxxxxx

  - by muruga

  I have a IBM server. This server contains 3 hard disk with RAID 5. It was working fine earlier. Unfortunately this machine got the following error message. After that I have rebooted the systems. After that I am getting the following error message in kern.log and demsg kernel: [65896.678870] end_request: I/O error, dev sda, sector 17430271 kernel: [69263.783957] sd 0:0:0:0: [sda] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE,SUGGEST_OK : [69263.783957] sd 0:0:0:0: [sda] Sense Key : Hardware Error [current] kernel: [69263.783957] sd 0:0:0:0: [sda] Add. Sense: Internal target failure Whether it is kernel problem or hard disk problem or Raid problem

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• Improve performance on Lync desktop sharing

  - by Trikks

  I'm using Lync 2010 server to handle some clients communication and screen sharing. The biggest issue is the performance with screen sharing, it is of rather high quality but the frame rate is very poor. I have been reading and searching a lot on the subject and 95% of all topics is about bandwidth, we have a 200/200 MBit Internet connection solely for this application. Also my test machines runs on an internal gigabit lan. The speeds between all boxes is hysterically fast. Next step was to ensure that there where some profiles for different bandwidths, so i registered some New-CsNetworkBandwidthPolicyProfile -Identity 50Mb_Link -Description "BW profile for 50Mb links" -AudioBWLimit 20000 -AudioBWSessionLimit 200 -VideoBWLimit 14000 -VideoBWSessionLimit 700 New-CsNetworkBandwidthPolicyProfile -Identity 100Mb_Link -Description "BW profile for 100Mb links" -AudioBWLimit 30000 -AudioBWSessionLimit 300 -VideoBWLimit 25000 -VideoBWSessionLimit 1500 Nothing fancy happend here either. Non of the test boxes have anything from Norton installed, they doesn't have any firewalls running (nor does the Lync server), all fences are down in this environment just for the testing. Is there any thing that I may have missed to improve the quality of this? Thanks

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