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• Another guvcview issue? Core dump!

  - by user290498

  guvcview is core dumping with my Sony Handycam plugged in. It works fine with my standard Logitech Webcam. I deleted the config file so it could re-create it. here is the output: $ guvcview guvcview 1.5.3 Could not open /home/rayj/.guvcviewrc for read, will try to create it write /home/rayj/.guvcviewrc OK ALSA lib pcm.c:2217:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.rear ALSA lib pcm.c:2217:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.center_lfe ALSA lib pcm.c:2217:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.side ALSA lib audio/pcm_bluetooth.c:1614:(audioservice_expect) BT_GET_CAPABILITIES failed : Input/output error(5) ALSA lib audio/pcm_bluetooth.c:1614:(audioservice_expect) BT_GET_CAPABILITIES failed : Input/output error(5) ALSA lib audio/pcm_bluetooth.c:1614:(audioservice_expect) BT_GET_CAPABILITIES failed : Input/output error(5) ALSA lib audio/pcm_bluetooth.c:1614:(audioservice_expect) BT_GET_CAPABILITIES failed : Input/output error(5) ALSA lib pcm_dmix.c:957:(snd_pcm_dmix_open) The dmix plugin supports only playback stream Cannot connect to server socket err = No such file or directory Cannot connect to server socket jack server is not running or cannot be started video device: /dev/video0 ERROR opening V4L2 interface for /dev/video1 Init. stk1160 (location: usb-0000:00:1d.0-1.5) { pixelformat = 'UYVY', description = '16 bpp YUY2, 4:2:2, packed' } VIDIOC_ENUM_FRAMESIZES - Error enumerating frame sizes: Inappropriate ioctl for device Unable to enumerate frame sizes. : Inappropriate ioctl for device { pixelformat = 'RGB3', description = 'RGB3' } { ?GSPCA? : width = 720, height = 480 } fmtind:2 fsizeind: 1 { pixelformat = 'BGR3', description = 'BGR3' } { ?GSPCA? : width = 720, height = 480 } fmtind:3 fsizeind: 1 { pixelformat = 'YU12', description = 'YU12' } { ?GSPCA? : width = 720, height = 480 } fmtind:4 fsizeind: 1 { pixelformat = 'YV12', description = 'YV12' } { ?GSPCA? : width = 720, height = 480 } fmtind:5 fsizeind: 1 vid:05e1 pid:0408 driver:stk1160 checking format: 1196444237 Format unavailable: 1196444237. Init v4L2 failed !! Init video returned -2 trying minimum setup ... Segmentation fault (core dumped)

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• SQL SERVER – Unable to DELETE Project in Data Quality Projects (DQS)

  - by pinaldave

  Here is the email which made me write this blog post. When I write a blog post I write keeping in mind that if the developer is not familiar with the concept he will attempt this on the development server. If due to any reason you attempt it on any other server than your personal server, developer should make sure to have complete confidence on his own expertise and understand the risk behind it.  Well, let us read the email which I received. I have modified it a bit to remove information related to organizational and individual. “I just read your blog post on Beginning DQS. I went ahead and followed every single screenshot and it worked fine. I was able to execute the DQS project successfully. However, the same blog post got me in trouble – a serious trouble. After first successful deployment I went ahead and created a few of my own knowledge base and projects. I played around a bit and then decided to get back to real work. Now we had deployed DQS on production server only, so experiment on production server. Now, when I got back to my work, I forgot to close all the windows. My manager found the window open and have seen my test projects. He has asked me to delete my experiments immediately and have said words which I cannot write to you. Here is the problem. I am not able to delete the project which I have created earlier. I am able to open it and play with it but the delete option is disabled and grayed out (see attached image). Now I believe there is nothing wrong with this project as it was just a test project. Would you please write to my manager that it is not harmful to leave that project there as it is? It is also not using any resources. I think he will believe you.” As I said this kind of email makes me uncomfortable. I do not want someone to execute anything on production server. I often write notes and disclaimer on my post when something is dangerous to execute on production server. However, if someone is not expert with SQL Server and attempts something new on production server, I think the major issue is here with the person (admin) who gave new developer permission to production server. This has to be carefully avoided. Here was my response to the individual. “I cannot write to your manager anything as he has not asked me anything. Honestly I believe he is correct in his behavior as you should have not executed anything on the production server without prior approval and testing on the development server. Any R&D must be done on local box or development box. I suggest you request your manager to prevent access to users who does not need access. If he is a good manager, he might have already implemented by now recent event. I also see your screenshot. Here is the issue: While you were playing with project, you might have closed the project half the way, without completing it. Due to the same reason it is locked. You can open and continue from the same place where you have left the project. If you do not need the project any more. Right click on it, click on unlock the project. This will enable the DELETE option and now you can delete the project. Next time, be safe out there. It may be dangerous to have admin access to production server when not needed.“ I have yet not heard from him but I believe he will take my words positively. Reference: Pinal Dave (http://blog.SQLAuthority.com) Filed under: PostADay, SQL, SQL Authority, SQL Query, SQL Server, SQL Tips and Tricks, T SQL, Technology Tagged: Data Quality Services, DQS

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• decrypting AES files in an apache module?

  - by Tom H

  I have a client with a security policy compliance requirement to encrypt certain files on disk. The obvious way to do this is with Device-mapper and an AES crypto module However the current system is setup to generate individual files that are encrypted. What are my options for decrypting files on-the-fly in apache? I see that mod_ssl and mod_session_crypto do encryption/decryption or something similar but not exactly what I am after. I could imagine that a PerlSetOutputFilter would work with a suitable Perl script configured, and I also see mod_ext_filter so I could just fork a unix command and decrypt the file, but they both feel like a hack. I am kind of surprised that there is no mod_crypto available...or am I missing something obvious here? Presumably resource-wise the perl filter is the way to go?

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• OpenBSD ftp-proxy behind NAT itself

  - by Manuel Faux

  Is it possible to change the PASV IP ftp-proxy of OpenBSD sends to clients, without changing the listen address of redirection control (-b <address>)? I have the following setup: FTP client --> 1:1 NAT router --> OpenBSD router --> FTP server The 1:1 NAT router has a NAT rule to forward everything to the OpenBSD router, the OpenBSD router runs the ftp-proxy -R <FTP server IP>. When the FTP client sends the PASV command, the proxy answers with the Entering Passive Mode (227) message with his own source IP on the interface to the 1:1 NAT router (obviously). Since the 1:1 NAT router is not protocol aware, it forwards this message and the client receives the message with the PASV IP of the OpenBSD router, which it does not have a route to. Is there a way, that I can tell ftp-proxy to send the Entering Passive Mode message with a different source IP?

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• Single Exchange 2007 server - two AD domains

  - by TheCleaner

  CURRENT: single domain, single Exchange 2007 NEW: two domains, single Exchange 2007 Can this be done? Details: Current setup is a single W2k3 domain with a single Exchange 2007 server. We are merging with another company that currently hosts their email with their ISP via POP3. We'd like to start hosting their email on our Exchange server using their existing domain SMTP addresses. They don't have an AD domain at all at the moment. Recommendations? Can I do this with a trust between the 2 domains? Requirements: They can't have multiple SMTP addresses on both domains...such as I've seen with articles pointing to "hosting multiple domains". I want companyA to have the same account settings they've always had...companyB to have the same SMTP address they've had and not an additional one on the current companyA Exchange domain. They should be able to collaborate (calendar, contacts, GALs) but should still be distinguishable based on which company they "work for". Please help...thanks!

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• Dell poweredge 1850's - wont install os

  - by user1326789

  I have 3 of these dell 1850 rack servers. 1 has 3GB RAM and 2 73GB HDD's. 2 have 6GB RAM and each of them has 2 73GB HDD's. I am currently trying to install an os on them but when i boot with windows xp setup, it gives me an error saying no partition found. Now i have set these drives up in RAID on the server and i put them "online" so it should be working fine but they're not. Please assist me in installing an operating system on these, i have no clue as to if it's the BIOS or the RAID controller within it. Thanks in advance, -Matt.

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• Virtualmin Configuration

  - by Allen

  I am trying to get Virtualmin setup and have reached a point where my noobish sysadmin skills aren't getting the job done. This is the message I get now when I try and refresh the configuration of Virtualmin. BIND DNS server is installed, and the system is configured to use it. However, the default master DNS server XXXXXX is not a fully qualified domain name. Sendmail is only accepting SMTP connections on the following ports : 127.0.0.1 port smtp. Email from other systems on the Internet will not be accepted. This can be changed in the Sendmail Mail Server module. Please advise what I need to do to get Sendmail configured properly. Thanks!

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• How to troubleshoot intermittent and irregular connection errors on home network (preferrably Mac client)

  - by Martin

  Hi, I'm experiencing intermittent connection errors in our home network from two different computers, normally "Connection Reset" when browsing, but also other issues such as very slow throughput. I have approximately a network setup as below: ISP-Cable Modem-Dlink DIR 655 Router-(Ethernet)-Fon Router-Mac/Windows laptop Basically, is there a simple way to monitor the network and detect where issues are coming from? Right now we don't know if it is the Fon router, the Dlink router, the modem or the ISP. As the issue is intermittent, is there a software that regularly traceroutes a set of destinations and tests e.g. throughput, something that can help us figure out where in the chain the errors are introduced? The more automatic network monitor, the better.

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• Setting up a git repository on a server

  - by lostInTransit

  Hi I read through the other git questions here but couldn't really follow whether they are trying to do the same thing as I am. So if you find any duplicates, please let me know. I have a central server with SSO installed. All my machines are connected through the lan to this server. I have also setup a remote git repository on this server. Now what I'd like to do is make the server act as a central repository. All my employees can commit their code to the server and the server pushes it to the remote git repository. Also can I integrate it with SSO in any way? Can someone please help me out with this process? I am new to git and still learning how to use it effectively. So a step-by-step process or an existing document which I can refer to for this? Thanks.

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• Routing different domains on a VPS

  - by Hans Wassink

  We just went from shared hosting to a VPS server. We have several domain names that we have pointing to our dns, but they all point to the root of the server. What I would like now is a setup where every domain name gets its own map so we can run different sites on the VPS server. Like: www.example.com points to: /var/www/example.com www.imapwnu.com points to: /var/www/imapwnu.com First of all, is this possible? Second, I have root SSH access and Webmin, on a LAMP server running on Ubuntu. Webmin doesnt have Bind9 (I dont know if I need that, some forums pointed me towards something called bind). Thanks in advance

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• Internal Mic not working on Dell Adamo 13

  - by AFD

  So I'm using Elementary Luna Beta (based on Ubuntu 12.04 LTS) on a spare HDD after successfully using Jupiter release (based on 10.10) for many years. In Jupiter I had my internal mic work out of the box and with Skype installed from deb it was all setup without having to step foot inside the terminal. In Luna Beta the internal mic is not recognised by the OS and so also not recognised by Skype. I believe the hardware is this (from sudo lshw): *-multimedia description: Audio device product: 82801I (ICH9 Family) HD Audio Controller vendor: Intel Corporation physical id: 1b bus info: pci@0000:00:1b.0 version: 03 width: 64 bits clock: 33MHz capabilities: pm msi pciexpress bus_master cap_list configuration: driver=HDA Intel latency=0 resources: irq:46 memory:f8600000-f8603fff As well as this I ran cat /proc/asound/card0/codec* | grep Codec which gave me: Codec: IDT 92HD73C1X5 Codec: Intel Cantiga HDMI How do I tweak Luna to get this hardware working properly? I'm able to switch out my Luna HDD with the Jupiter HDD to help troubleshoot what the differences are between the two and why the more recent OS can't find / use the mic correctly. Thanks in advance for any help you can give.

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• Centos expanding directory

  - by Ansell Cruz

  I currently have a file server, all the files are installed in /usr/local/nginx/html/. The setup is 1 hard disk with 1TB of data. This 1TB of storage is all used up. I asked the guys to add 2 HDDs with 2TB each. This new HDDs will be used for new storage of files. Now, if I mount this 2 new HDDs into /usr/local/nginx/html/, the current files in there will be deleted. My goal is to expand the storage in /usr/local/nginx/html/ without losing data in it. Would this be possible?

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• Ensuring non conflicting components in a modular system

  - by Hailwood

  So lets say we are creating a simple "modular system" framework. The bare bones might be the user management. But we want things like the Page Manager, the Blog, the Image Gallery to all be "optional" components. So a developer could install the Page Manager to allow their client to add a static home page and about page with content they can easily edit with a wysiwyg editor. The developer could then also install the Blog component to allow the client to add blog entries. The developer could then also install the Gallery component to allow the client to show off a bunch of images. The thing is, all these components are designed to be independent, so how do we go about ensuring they don't clash? E.g. ensuring the client doesn't create a /gallery page with the Page Manager and then wonder why the gallery stopped working, or the same issue with the Blog component, assuming we allow the users to customize the URL structure of the blog (because remember, the Page Manager doesn't necessarily have to be there, so we might not wan't our blog posts to be Date/Title formatted), likewise our clients aren't always going to be happy to have their pages under pages/title formatting. My core question here is, when building a modular system how to we ensure that the modules don't conflict without restricting functionality? Do we just leave it up to the clients/developer using the modules to ensure they get setup in a way that does not conflict?

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• Which Linux distributive could you advise for a webserver with PIII-700MHz and 512Mb RAM?

  - by Andrei

  Hi everybody, We need to update our webserver (PIII-700MHz and 512Mb RAM) and could not do that without reinstalling the whole system. However my choice to put Ubuntu 9.10 was probably not the best and the machine works very slow now. Actually, we need it just for simple LAPM configuration and we really want to use the old box for this purpose. It used to have old version of Linux Slackware in which I didn't manage to update PHP due to a very complicated non-standard setup. What would you recommend?

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• Why would accessing photos over a network be a problem for Digikam?

  - by Shedeki

  Digikam has always worked nicely for me. I recently setup a Synology DiskStation (DS212+) and moved all my pictures to it, keeping them in an encrypted folder. I mount that folder using cifs, as some bug prevents eCryptfs and NFS from working together. This has led Digikam to being incredibly slow. Startup takes a very long time (several minutes for 41779 items, 123.8GB) but worse is how long it takes Digikam to write files. I like using Digikams import feature to copy new images from my camera to the hard drive because it checks for duplicates as well as creating a clear folder structure according to the dates the images were taken. Since I moved to using the network drive Digikam takes about 5 to 10 times as long to import photos than it did before. Saving modified or converted images takes equally long. What I am looking for is a way to help Digikam speed things up or an alternative piece of software (I have never liked Digikam being so very much KDEish…). There are just so many features that only Digikam seems to combine, e.g.: Batch processing. Respects existing folder structure. Does not mess up files for other applications. *.NEF support. Caches thumbnails in a clean way.

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• Content Length and Transfer Encoding Chunked nginx, node-http-proxy

  - by rampr

  I have the following setup - node-http-proxy acts as a reverse proxy forwarding all requests to nginx/socket.io as necessary My problem is this When I send a HTTP DELETE request from the browser, node-http-proxy adds a header "Transfer Encoding Chunked" as the request from the browser had no Content Length. The request from the browser had no Content Length as it had no body. Nginx doesn't like the Transfer Encoding Chunked Header and throws a 411 asking for Content-Length. The problem gets solved when I send dummy data as part of the DELETE request so there is a Content Length and node-http-proxy doesn't add Transfer Encoding Chunked header and nginx is happy. I want to understand if node-http-proxy isn't working as expected, because it adds a Transfer Encoding Chunked header when Content Length is missing because there is no Content Body.

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• Getting the relational table data into XML recursively

  - by Tom

  I have levels of tables (Level1, Level2, Level3, ...) For simplicity, we'll say I have 3 levels. The rows in the higher level tables are parents of lower level table rows. The relationship does not skip levels however. E.g. Row1Level1 is parent of Row3Level2, Row2Level2 is parent of Row4Level3. Level(n-1)'s parent is always be in Level(n). Given these tables with data, I need to come up with a recursive function that generates an XML file to represent the relationship and the data. E.g. <data> <level levelid = 1 rowid=1> <level levelid = 2 rowid=3 /> </level> <level levelid = 2 rowid=2> <level levelid = 3 rowid=4 /> </level> </data> I would like help with coming up with a pseudo-code for this setup. This is what I have so far: XElement GetXMLData(Table table, string identifier, XElement data) { XElement xmlData = data; if (table != null) { foreach (row in the table) { // Get subordinate table Table subordinateTable = GetSubordinateTable(table); // Get the XML Data for the children of current row xmlData += GetXMLData(subordinateTable, row.Identifier, xmlData); } } return xmlData; }

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• Change the format of the date column in Thunderbird

  - by TheOmega

  I want to change the format of the "Date"-column in the messagelist in Thunderbird. For mails from today, I want to display only the time, not the date. For mails from before today, I want to display only the date, not the time. This is the same setup mutt uses. I know of the Date display format wiki article, which describes how to change the date format, but you can only switch between five predefined formats, and none of them is "Date only". I also know of the ConfigDate extension, but it's got the same limitations, you can't define a new date format.

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• Modded Portal Gun Levitates a Companion Cube [Video]

  - by Jason Fitzpatrick

  This cleverly designed Portal gun prop levitates a model Companion Cube; the whole setup just begs to be paired with a Halloween costume. Courtesy of Caleb over at Hack A Day: I was out to lunch with a couple friends, brainstorming ideas for fun projects when one of them says “Wouldn’t it be cool if we could build a working gravity gun?”. We all immediately concurred that while it would in fact be cool, it is also a silly proposition. However, only a few seconds later, I realized we could do a display piece that emulated this concept very easily. Floating magnetic globes have been around for quite some time. I determined I would tear the guts out of a stock floating globe and mount it on a portal gun, since they’re easier to find than a gravity gun. I would also build a custom companion cube to be the correct size and weight necessary. Watch the video above and then check out the link below for more information on the build. HTG Explains: What is the Windows Page File and Should You Disable It? How To Get a Better Wireless Signal and Reduce Wireless Network Interference How To Troubleshoot Internet Connection Problems

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• Why don't I have a loop error with these redirects?

  - by byronyasgur

  I know this may seem a bit of a question in reverse, but I actually don't seem to have a problem I just want to make sure before I proceed. I have 2 domains domain1.com and domain2.com and a directory my_directory at domain2.com. I have domain2.com setup as an "add on domain" in the cpanel account of domain1.com so that when I go to domain2.com I am taken to domain1.com/my_directory but the browser shows domain2.com in the addressbar so it looks and acts like and is a separate site. However when people browse to domain1.com/directory I want the address bar to show domain2.com not domain1.com/directory. So I put a redirect in the htaccess file to redirect domain1.com/directory to domain2.com and it works perfectly, but I think it shouldnt and I'm worried I've done something wrong. My question is this: domain2.com was already redirected to domain1.com/directory in the first place (I see the redirect in my cpanel under addon domains) so by adding the second redirect in the htaccess file I should be creating a loop! Could somebody please set my mind at rest and show me why not?

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• How to make ssh/rsync/etc use a VLAN network interface?

  - by Annan

  A company I work for has a number of virtual servers with ElasticHosts. They are setup in such a way that eth1 is on a private VLAN connecting them to each other. This is so backups sent between servers are not charged at the same rate as external data transfer. My understanding of how VLANs and network interfaces work is sketchy at best. How can I make ssh, rsync, etc. transfer data through the VLAN? My final solution: I spent a while trying to figure this out, For all servers involved, edit /etc/sysconfig/network-scripts/ifcfg-eth1 DEVICE=eth1 BOOTPROTO=static ONBOOT=yes HWADDR=YOUR_MAC_ADDR IPADDR=192.168.0.100 NETMASK=255.255.255.0 Where HWADDR should already be set and the last octate of IPADDR should be different from each other. Then run, on all servers /etc/init.d/network restart After this the IP addresses specified by IPADDR can be used directly as any other IP address.

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• Configure Windows Routes for VPN

  - by Florin Sabau

  I have a Virtual PC/VMWare machine that runs Windows Server 2003. This virtual machine uses an IPSec VPN client program to connect to a remote network. I configured the virtual machine to have 2 NICs: NAT - to be used by the VPN Client to access the remote network Host only - to be able to access the virtual machine from the host The reason I have this setup is because I want to be able to access some remote network from the host machine. I could've installed the VPN client on the host machine, but the host runs Windows 7 and the client doesn't support it. The problem: although the virtual machine is normally reachable (ping + http access), as soon as the VPN client is started, neither of the NIC addresses are reachable anymore. I'm wondering if it is a routing problem that needs to be addressed? How do routing/VPN client connection affect the ability of the server to respond to client requests from the host?

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• Digital audio does not work on MacBook Pro

  - by mathk

  I have a MacBook Pro (8,2). Using a TOSLINK cable I have no digital output. Oddly enough, sometime I can hear a glitch when I plug in the cable or when I give it a gentle wiggle. My guess is that the output is not correctly detecting that I have a digital link. So is there a way to force digital audio output on a MacBook Pro? Some say that in the Audio MIDI Setup there is an option but I can't find it. I am running OS X 10.7.5.

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• OOW content for Pattern Matching....

  - by KLaker

  If you missed my sessions at OpenWorld then don't worry - all the content we used for pattern matching (presentation and hands-on lab) is now available for download. My presentation "SQL: The Best Development Language for Big Data?" is available for download from the OOW Content Catalog, see here: https://oracleus.activeevents.com/2013/connect/sessionDetail.ww?SESSION_ID=9101 For the hands-on lab ("Pattern Matching at the Speed of Thought with Oracle Database 12c") we used the Oracle-By-Example content. The OOW hands-on lab uses Oracle Database 12c Release 1 (12.1) and uses the MATCH_RECOGNIZE clause to perform some basic pattern matching examples in SQL. This lab is broken down into four main steps: Logically partition and order the data that is used in the MATCH_RECOGNIZE clause with its PARTITION BY and ORDER BY clauses. Define patterns of rows to seek using the PATTERN clause of the MATCH_RECOGNIZE clause. These patterns use regular expressions syntax, a powerful and expressive feature, applied to the pattern variables you define. Specify the logical conditions required to map a row to a row pattern variable in the DEFINE clause. Define measures, which are expressions usable in the MEASURES clause of the SQL query. You can download the setup files to build the ticker schema and the student notes from the Oracle Learning Library. The direct link to the example on using pattern matching is here: http://apex.oracle.com/pls/apex/f?p=44785:24:0::NO:24:P24_CONTENT_ID,P24_PREV_PAGE:6781,2.

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• How to get two seperate remote domain controllers with same IP to work?

  - by Mr. Mister

  Hi, I have a VPN setup between multiple locations. Between each location and the central point (me), is a trust between our domain controllers. It all works great.. A new location wants to join, but their AD controller is using an IP address that is already in use by another AD in a separate location. Neither locations can change their IP addresses, but apparently there is a NAT rule that could be used to allow communication between each AD controller? The central site has a Cisco 5510 firewall which could perform the NAT, but I am unsure of the logic behind the NAT rule. Is anyone able to explain or help out? Thanks.

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