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• Is it smart to take a year off from school to get experience?

  - by user134147

  firstly I apologize if this question is not appropriate for the site, but I've seen other similar (though slightly deviant) questions on this sight before and I know the people here are the most qualified to answer my question. Anyways, I'm currently between my sophomore and junior years at a 4 year university, and after a bit of deliberation I've decided on computer science as a major (BA, by the way, as a BS would require me to stay at least an extra year the way our program is set up). I've been interested now in programming for a few months and I've developed a passion for it in a very short time. I began learning C++, migrating to Java recently when I learned my school focuses on this language. Now, I should mention that the concept of higher education has never sat well with me, so part of my motivation for wanting to take time off is to truly challenge myself and see what I can accomplish when I actually try at something. The autodidact in me finds it difficult to focus on my passions while trying to keep a high GPA in unrelated classes. However, I understand the times we live in and therefore would plan to complete my degree after this year. So my question is whether or not the skills I learn in a year off from college could justify the time off from school. Unfortunately, I don't believe I know enough yet to gain any professional experience (internship, etc.) so I would mostly focus my time on learning Java and another language, possibly Wordpress (to gain an understanding of web programming concepts as I have not yet decided what field I want to get into, and to make some money to fund my off-year), and to delve into security concepts, which also interest me. I'm hoping I could work on projects, such as simple applications or contributions to open source software during this time to enhance my resume once I do finish school, so I can find a job out of college easier. I do not want to be the new hire who knows nothing beyond the concepts of his Java textbooks. Does anyone have any input about these thoughts of mine, or any ideas for where I should focus my studies or how high I might set the bar for my work? Thanks a lot everyone!

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• Is the Observer pattern adequate for this kind of scenario?

  - by Omega

  I'm creating a simple game development framework with Ruby. There is a node system. A node is a game entity, and it has position. It can have children nodes (and one parent node). Children are always drawn relatively to their parent. Nodes have a @position field. Anyone can modify it. When such position is modified, the node must update its children accordingly to properly draw them relatively to it. @position contains a Point instance (a class with x and y properties, plus some other useful methods). I need to know when a node's @position's state changes, so I can tell the node to update its children. This is easy if the programmer does something like this: @node.position = Point.new(300,300) Because it is equivalent to calling this: # Code in the Node class def position=(newValue) @position = newValue update_my_children # <--- I know that the position changed end But, I'm lost when this happens: @node.position.x = 300 The only one that knows that the position changed is the Point instance stored in the @position property of the node. But I need the node to be notified! It was at this point that I considered the Observer pattern. Basically, Point is now observable. When a node's position property is given a new Point instance (through the assignment operator), it will stop observing the previous Point it had (if any), and start observing the new one. When a Point instance gets a state change, all observers (the node owning it) will be notified, so now my node can update its children when the position changes. A problem is when this happens: @someNode.position = @anotherNode.position This means that two nodes are observing the same point. If I change one of the node's position, the other would change as well. To fix this, when a position is assigned, I plan to create a new Point instance, copy the passed argument's x and y, and store my newly created point instead of storing the passed one. Another problem I fear is this: somePoint = @node.position somePoint.x = 500 This would, technically, modify @node's position. I'm not sure if anyone would be expecting that behavior. I'm under the impression that people see Point as some kind of primitive rather than an actual object. Is this approach even reasonable? Reasons I'm feeling skeptical: I've heard that the Observer pattern should be used with, well, many observers. Technically, in this scenario there is only one observer at a time. When assigning a node's position as another's (@someNode.position = @anotherNode.position), where I create a whole new instance rather than storing the passed point, it feels hackish, or even inefficient.

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• Developing a cloud based app

  - by user134897

  I am a company owner that has developed a cloud based app. My code writer has told me how good he is more than once, well, better stated, he did a good job telling me he was better than everyone else in my rather small community. In the last 18 months I have spent nearly 160,000.00 dollars trying to get this company to the "making money" stage. I am now nearly broke, sitting on the edge of a brilliant marketing plan to launch a much needed cloud based app. We did launch our app last year (late 2013), and the feedback was amazing from the users. One user that signed up to use the free app stated that we needed to call him the moment our company goes public because he wants to be the first to buy stock. Now, here's my problem. We did not originally set out to develop a freemium app, we just sort of ended up there by the natural progression of the app. So, now I have an app that really needs to be scrapped and re-built. Although I do feel my code writer has displayed some brilliance in what he has done, he was extremely weak on graphics and every time we speak he tells me there is a newer better way to code that he is trying to learn. So, here's the million dollar question. Ho do I find code writers that already know the newest, best ways to write code? Or maybe better asked, what is the newest best code writing technique? Second, is it even possible to find code writers that are good at graphics? In short, I am nearly broke and need to start over, but I do not know where to find people qualified to write it good the first time around and display good graphic skills. I am trying to build a team of writers instead of just one person. Maybe 3 good at code and two good at graphics, but I am clueless as to what criteria I should use to determine if I am building the right team members. Please help, I am sure you can tell I am fairly lost by my continued rambling.

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• Zelda-style top-down RPG. How to store tile and collision data?

  - by Delerat

  I'm looking to build a Zelda: LTTP style top-down RPG. I've read a lot on the subject and am currently going back and forth on a few solutions. I'm using C#, MonoGame, and Tiled. For my tile maps, these are the choices I can see in front of me: Store each tile as its own array. Each one having 3-4 layers, texture/animation, depth, flags, and maybe collision(depending on how I do it). I've read warning about memory issues going this route, and my biggest map will probably be 160x120 tiles. My average map however will be about 40x30. The number of tiles might cut in half if I decide to double my tile size, which is currently 16x16. This is the most appealing approach for me, as I feel like I would know how to save maps, make changes, and separate it into chunks for collision checks. Store the static parts of my tile map in multiple arrays acting as the different layers. Then I would just use entities for anything that wasn't static. All of the other tile data such as collisions, depth, etc., would be stored in their own layers as well I guess? This way just seems messy to me though. Regardless of which one I choose, I'm also unsure how to plan all of that other tile data. I could write a bunch of code that would know which integer represents what tile and it's data, but if I changed a tileset in Tiled and exported it again, all of those integers could potentially change and I'd have to adjust a whole bunch of code. My other issue is about how I could do collision. I want to at least support angled collision that slides you around the corners of objects like LTTP does, if not more oddball shapes as well. So do I: Store collision as a flag for binary collision. Could I get this to support angles? Would it be fine to store collision as an integer and have each number represent a certain angle of collision? Store a list of rectangles or other shapes and do collision that way? Sorry for the large two-part(three-part?) question. I felt like these needed to be asked together as I believe each choice influences the other.

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• Accessing controls of .aspx file in .aspx.cs without any declaration.!!??

  I am able to access the controls of ".aspx" file in ".aspx.cs" directly without any declaration in ".aspx.cs" or in designer.cs. How is this possible? This is happeing only if I open website as using File System. Create a new ASP.NET web site application with Visual Studio 2008. So following three files will be created automatically              "Default.aspx",              "Default.aspx.cs"              "Default.designer.cs" Now Delete "Default.designer.cs" perminently. Just create a button in Default.aspx file    <asp:Button runat="server" Text="Save Plan" ID="btnSave" />   Close the Solution and open the website as File System.               File -> Open Web Site -> File System -> Select Web Site Folder and Open the project.                   Now btnSave is automatically recognized in Default.aspx.cs without any declaration in Default.aspx.cs as bellow                            System.Web.UI.WebControls.Button btnSave; How btnSave is being recognized by .cs file without defining it anywhere as an object of System.Web.UI.WebControls.Button? Note: This happens only if you open Web Site from File System.           and No Declaration at all for btnSave. Please refer this article on this. span.fullpost {display:none;}

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• i5 540M or i7 720QM for laptop running VMs and software development tools?

  - by Donald Hughes

  I'm a software developer that would primarily be running Windows 7 as the primary operating system. On a typical day, I might, at any given moment, be running Visual Studio, Expression Web, SQL Server developer (and Management Console), IIS, Photoshop, a dozen browser tabs in 2-3 different browsers, Skype video chat, streaming music, and a couple of VMs (WinXP and Ubuntu) for testing/experimentation. Obviously, RAM is a concern, which is why I plan to use 8 GB so I can devote enough to the VMs to be usable. I'm also tempted to use an ExpressCard SSD for storing the VM disks to ease disk contention. And I know that that is asking a lot from a laptop, and I should just use a desktop, but I need to be able to take my work with me between several locations. It seems that at a reasonable price point, it comes down to the i5 540M versus the i7 720QM. I'm leaning toward the i7 since it would allow me to dedicate a whole hyperthreaded core to each VM, and still have two cores left for the primary OS. I've heard that the i5 has better battery life, but I'm curious for my scenario if there would be a meaningful difference. I don't usually work without a plug, but I do occasionally ride the train or fly and it would be nice to have at least 3 hours of juice for unusual circumstances. And, finally, for this usage scenario, would a dedicated video option be preferred over the i5's integrated video? It sounds like Visual Studio 2010 (and Windows 7) can take advantage of the video card.

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• change DNS but keep email server

  - by Oterox

  I currently have my client's website hosted in china and the domain is hosted in www.net.cn I've purchased an inmotionhosting plan and i want to move the website there. For having the website working i just need to change the DNS nameservers but i want to keep the email in the client's old server, is this possible? Currently i have this DNS: MX mxn.mxhichina.com. 5 MX mxw.mxhichina.com. 10 CNAME pop3 pop3.mxhichina.com. -- CNAME smtp smtp.mxhichina.com. -- CNAME mail mail.mxhichina.com. -- CNAME m m.mxhichina.com. -- TXT v=spf1 include:spf.m... -- A @ 223.4.215.96 -- A www 223.4.215.96 -- and in inmotionhosting i have this: example.com. 14400 IN A 216.194.168.46 localhost.example.com. 14400 IN A 127.0.0.1 mail.example.com. 14400 IN CNAME example.com www.example.com. 14400 IN CNAME example.com webmail.example.com. 14400 IN A 216.194.168.46 What do i have to change to have the website working on the new server but keeping the email server where it is right now?

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• Windows 2000 uninstall on a dual-boot 2000/XP system

  - by Viktor

  While several questions have already been answered about removing an OS from a dual-booting machine, most refer to Windows 7 vs. Linux/Vista/XP. I have W2K installed on my older HDD (Drive C). Later on I bought a new HDD and installed XP's under W2K environment. Each time I turned my PC on, I had the choice of W2K or XP OS, which I still have. I eventually stopped using the w2k OS and as the older HDD where this OS is installed is getting old, I plan to remove it completely. The problem is that the active master boot record is on this very HDD. So when I remove the HDD, I get no OS loader, no matter what boot drive I choose in BIOS. Apparently I have to set the boot record on the newer HDD with XP's. Some advise to use the bootable XP CD and try to set the active MBR from there.. I don't have the CD anymore. Regardless, I suspect there is much less to solving this problem than running the recovery console, like a simple boot.ini file edit. But I might be wrong.

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• The boot selection failed because a required device is inaccessible 0xc000000e

  - by bbodenmiller

  A family member of mine recently went on vacation and turned off their computer, something they normally do not do, upon returning home it would not turn on and now returns the error message below. Generally friends and family come to me for help with computers and I have no problem, however this time I am a bit stumped. Any suggestions would be greatly appreciated. As you can see the error message is: Status: 0xc000000e Info: The best selection failed because a required device is inaccessible. Before going to this error message it briefly flashes the Windows loading screen. I have been able to confirm through the Windows RE Command Line and the dir command that the C: drive is accessible and likely is just suffering a bootup issue. I have tried: Launching the repair process discussed in the error message three times however each time it requires a restart and then returns to the same error message. Changing the boot order to be hard drive first Getting into safe mode; F8 just results in the same error message before I can get to the menu to select safe mode I have checked to make sure the BCD (bcdedit, Boot Configuration Data) is still intact as per https://www.symantec.com/business/support/index?page=content&id=TECH160475 I plan to try (but would like additional comments on): sfc /scannow; requires a restart and thus will likely result in the error message again A memory scan Bootrec as per http://support.microsoft.com/kb/927392#method1 Swapping IDE cables/ports Resetting the BIOS I noticed others with similar issues around the web are dual-booting however this machine is not setup in a dual-boot environment. Additionally at one point this error message supposedly showed up before I started working on the computer: The instruction at 0xfbe2584d referenced memory at 0x00000008. The memory could not be read. As previously stated any additional suggestions or words of advice would be greatly apprecaited.

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• 4in6 tunneling (via OpenVPN?)

  - by Deshene

  I have a local network with internet access. But unfortunately IPv4 internet connection speed is limited to 1mbps, which is realy sad. Fortunately I have a native IPv6, and there is no connection speed limit over IPv6. So, in order to get a good internet connection I made a plan: connect to the VPN-service over IPv6, and pass all IPv4 traffic through IPv6 tunnel, or something like that, I think you get the idea. I suggested to use service like HideMyAss.com, but unfortunately they don't support IPv6. The question is: Is there any existing VPN service that will make my dreams come true, and is easy to use, which I could connect over PPTP or OpenVPN (I want to set up connection to VPN in my router settings). Edit: It seems like there are couple of VPN services that supports IPv6 (it's odd, but the biggest VPN services support only IPv4), and there is none providing 4in6 tunnels. So, I came to the following solution: rent a VPS with IPv6 address, and manually setup 4in6 tunnel. I'm not good at networking, never did things like that, and don't know where to start, and what should I do. The use case, as I undestand, should look like this: I connect from my home computer to the VPS via OpenVPN, and after that all my IPv4 traffic pass through IPv6 (server do the job). OpenVPN - because I want to configure VPN connection to server in my router (Asus RT-N16?). How can I achieve this?

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• Replacing DropBox with: Amazon S3 + SSL + GPG/TrueCrypt + Mounting on OSX ??

  - by Matt Rogish

  So, right now we're using DropBox to share various data files around between approximately 10 Mac OS X systems. However, we already have an S3 account and everyone on the lowest DropBox plan of $10/mo seems too expensive. We'd like to avoid any kind of local storage (share a disk on a desktop or something) since we're a geographically distributed team). So, I am contemplating something that would allow us to replace DropBox with our own home-grown solution. We are all fairly technical people and/or smart enough to follow some steps, so if it's not as "user friendly" as DropBox we're all comfortable with that. There are plenty of docs out there that have bits and pieces of what I want but some of the tools don't seem to fit the requirements: Transport security via SSL to the bucket Encryption of bucket contents Bi-directional syncing Most of the scripts I can find on the internet use "duplicity" which appears to fail #1 (it doesn't look like duplicity supports SSL to S3 - the docs don't state but the protocol looks plain old http http://www.nongnu.org/duplicity/duplicity.1.html#sect6 ) Many scripts use gpg to encrypt files. This seems like it could work, however I have to make sure that each OSX client is able to use the same key to encrypt and decrypt files (key management is left to me to manage). FTP and other client-based apps don't seem to support this at all. Finally, most of the scripts use one-way replication, e.g. using Amazon S3 as a simple backup store. As we'd be using Amazon S3 as the "repository" they fail this one. Whew. So, I'd love a single tool that does this but after an exhaustive search I don't think one exists. In my mind, the magical tool would be some combination of TrueCrypt and rsync. I'd be happy just knowing which tools out there can fulfill my 3 requirements, after that I can stitch together the rest. Any thoughts? THANKS!

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• local msmtp and ovh hosting

  - by klez

  I have my personal email hosted on OVH (personal hosting plan) and I'm not able to send mails using msmtp. Here's a typical session ignoring system configuration file /etc/msmtprc: File o directory non esistente loaded user configuration file /home/klez/.msmtprc using account default from /home/klez/.msmtprc host = ssl0.ovh.net port = 465 timeout = off protocol = smtp domain = localhost auth = choose user = federicoculloca%xxxxxxx password = * ntlmdomain = (not set) tls = on tls_starttls = off tls_trust_file = (not set) tls_crl_file = (not set) tls_fingerprint = (not set) tls_key_file = (not set) tls_cert_file = (not set) tls_certcheck = off tls_force_sslv3 = off tls_min_dh_prime_bits = (not set) tls_priorities = (not set) auto_from = off maildomain = (not set) from = federicoculloca@xxxxxxxx dsn_notify = (not set) dsn_return = (not set) keepbcc = off logfile = (not set) syslog = (not set) reading recipients from the command line TLS certificate information: Owner: Common Name: ssl0.ovh.net Organizational unit: Domain Control Validated Issuer: Common Name: OVH Secure Certification Authority Organization: OVH SAS Organizational unit: Low Assurance Country: FR Validity: Activation time: lun 31 gen 2011 01:00:00 CET Expiration time: mer 15 feb 2012 00:59:59 CET Fingerprints: SHA1: F9:DC:41:F9:A2:38:51:9B:56:E4:98:E6:CD:81:31:42:E6:0E:26:6D MD5: FC:EC:F3:8F:28:E4:7E:28:99:89:E6:BB:C9:DF:71:CE <-- 220 ns0.ovh.net ssl0.ovh.net. You connect to mail427.ha.ovh.net ESMTP --> EHLO localhost <-- 250-ssl0.ovh.net. You connect to mail427.ha.ovh.net <-- 250-AUTH LOGIN PLAIN <-- 250-AUTH=LOGIN PLAIN <-- 250-PIPELINING <-- 250-8BITMIME <-- 250 SIZE 109000000 --> AUTH PLAIN xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx <-- 235 ok, go ahead (#2.0.0) --> MAIL FROM:<federicoculloca@xxxxx> --> RCPT TO:<[email protected]> --> DATA <-- 250 ok <-- 250 ok <-- 354 go ahead --> hello world --> . <-- 554 mail server permanently rejected message (#5.3.0) And my configuration # ~/.msmtp # Mostly from Peter Garrett's examples # https://lists.ubuntu.com/archives/ubuntu-users/2007-September/122698.html # Accounts from Scott Robbins' `A Quick Guide to Mutt' # http://home.nyc.rr.com/computertaijutsu/mutt.html account xxxxx host ssl0.ovh.net from federicoculloca@xxxxxx auth on user federicoculloca%xxxxxx password xxxxxx tls on tls_certcheck off tls_starttls off Any idea?

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• Use RAID for desktop computer?

  - by NickAldwin

  I'm building a new computer over the summer. I'm fairly competent in computer hardware, and am thus building the computer from scratch. I have everything planned out, but I was wondering if I should consider RAID/what RAID to use. I plan to purchase 2x1TB drives. Currently I'm leaning toward RAID 1 for the redundancy -- I've heard newer super-capacity drives fail more often than one would think, and I don't want to have a problem and lose all my data. What do you think? My mobo supports RAID 0/1/5/10. Is it worth it to use RAID at all, or should I just use a backup service like Mozy? Should I consider RAID 0 instead, for the performance? I'm kind-of going back and forth on this one. Thanks a lot for your help. EDIT: I'd like to avoid the OS drive different from Data drive situation, because that can get frustrating when programs like to store a lot of data in their program files folder. I've lived with that situation before and it gets annoying after a while.

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• VMWare ESX, storage over 2TB

  - by Phliplip

  Hi, First of, i'm a webdeveloper and my server experience lies in setting up FreeBSD servers for webserver. I'm working on a project for at photographer, and i'm hired to develop a new online photo ordering system - where user of course can view their photos :) They have a massive need of storage, thus we have bought a HP G6 and 8x1TB SATA HDD. Our plan is to install VMWare ESX 4.0, running multiple virtual machines; FreeBSD 8 for webserver and some windows servers. Allready done that. Then mount one big storage to the BSD, and share it through Samba to the WinServers. The raid is set up with an array of 2x 1TB to handle the VMs. And the rest is setup as 3 2x1TB to handle the photo-data. Thus 2.73TB for photo-data (the raids are 1+0). Now if we add a datastore in the ESX and add the 3 LUNs we can get a datastore of 2.74TB. But i don't se how i can add this datastore direct to the VM. Only the BSD VM needs access to this. Only way is to create a VirtualDisk, with a max of 2TB (8MB blocksize). This is because the datastore where we save the virtualdisk has a maximum filesize of 2TB. Then add it as a harddisk to the BSD VM. In the 'Add Harddisk' pane for the VM, i see an option for Raw Disk Management. I think this is to access the datastore or the raid directly. Only problem is that its greyed out! Can i access the datastorage directly from the BSD? Without creating and adding virtualdisk.

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• ZFS - destroying deduplicated zvol or data set stalls the server. How to recover?

  - by ewwhite

  I'm using Nexentastor on a secondary storage server running on an HP ProLiant DL180 G6 with 12 Midline (7200 RPM) SAS drives. The system has an E5620 CPU and 8GB RAM. There is no ZIL or L2ARC device. Last week, I created a 750GB sparse zvol with dedup and compression enabled to share via iSCSI to a VMWare ESX host. I then created a Windows 2008 file server image and copied ~300GB of user data to the VM. Once happy with the system, I moved the virtual machine to an NFS store on the same pool. Once up and running with my VMs on the NFS datastore, I decided to remove the original 750GB zvol. Doing so stalled the system. Access to the Nexenta web interface and NMC halted. I was eventually able to get to a raw shell. Most OS operations were fine, but the system was hanging on the zfs destroy -r vol1/filesystem command. Ugly. I found the following two OpenSolaris bugzilla entries and now understand that the machine will be bricked for an unknown period of time. It's been 14 hours, so I need a plan to be able to regain access to the server. http://bugs.opensolaris.org/bugdatabase/view_bug.do?bug_id=6924390 and http://bugs.opensolaris.org/bugdatabase/view_bug.do;jsessionid=593704962bcbe0743d82aa339988?bug_id=6924824 In the future, I'll probably take the advice given in one of the buzilla workarounds: Workaround Do not use dedupe, and do not attempt to destroy zvols that had dedupe enabled. Update: I had to force the system to power off. Upon reboot, the system stalls at Importing zfs filesystems. It's been that way for 2 hours now.

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• ClearOS - how to create a site to site VPN between two ClearOS boxes?

  - by Scott Szretter

  I plan on setting up some ClearOS boxes at several sites, and would like to set up site-to-site VPN between the remote sites and a main site (all running ClearOS enterprise 5.2sp1 / latest version). I have found references for how to set up ClearOS to VPN in to devices such as cisco for IPSEC, and others with PPTP. But for these methods it did not mention how you might configure 2 ClearOS boxes to talk to each other ipsec or pptp. I also saw documentation on installing OpenVPN and using the OpenVPN client software to VPN in to the ClearOS box. I will probably use this for individual users to VPN in, but I have some small sites ( 1 to 10 users) that will have their own ClearOS box and need to create a site to site VPN link back to the main site's OpenVPN box. Is this possible, can you point me to docs, or other info or basically, how? A couple updates: I did find a thread that asks the same basic question, where the user has a vpn set up between the two clearos machines (after installing ipsec vpn modules), just not transporting traffic between the LANS - and the very last post claims you have to edit some files (/etc/ipsec.conf) and set leftnexthop rightnexthop values to %direct. After that, it's supposed to work. Could it be that simple? I also posted to clear foundation, and they pointed me to some documentation for setting up ipsec unmanaged vpn. This looks pretty good, but, I will most likely need to figure out how to handle a dynamic dns type setup at least on one end. Also, what does it mean by multi-wan? Finally, what happens when a vpn connection goes down exactly - someone has to reboot the box or ?

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• Exchange 2010: Replication Service Still Trying to Replicate Deleted Mailbox Store

  - by ThaKidd

  In advance, thank you for your opinions! I just migrated from Server/Exchange 2003 to Server 2008 SR2 running Exchange 2010. I had an extra mailbox that appeared with some system mailboxes in it. I used the EMS to move those mailboxes over and then deleted the store out of the EMC. Since then every so often I get an Error in Event Viewer. Source: MSExchangeRepl ID: 4098 Error: The Microsoft Exchange Replication service couldn't find a valid configuration for database '5f012f40-3bad-4003-a373-dbc0ffb6736f' on server 'EXCHSERVER'. Error: (nothing after this) I can confirm that the above GUID is the mailbox store of that I deleted. No other Exchange errors occur. How can I tell Exchange Replication to ignore this store? Setup, one Exchange server 2003 transitioned over to 2010. No other Exchange servers. Is there a way to fix this? Do I need to change a setting to stop replication? I plan to add a second Exchange server in the next few days so stopping replication would be a bad thing. Thanks again in advance. Jason

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• Ubuntu software stack to mimic Active Directory auth

  - by WickedGrey

  I'm going to have an Ubuntu 11.10 box in a customer's data center running a custom webapp. The customer will not have ssh access to the box, but will need authentication and authorization to access the webapp. The customer needs to have the option of either pointing the webapp at something that we've installed locally on the machine, or to use an Active Directory server that they have. I plan on using a standard "users belong to groups; groups have sets of permissions; the webapp requires certain permissions to respond" auth setup. What software stack can I install locally that will allow an easy switch to and from an Active Directory server, while keeping the configuration as simple as possible (both for me and the end customer)? I would like to use as much off-the-shelf software for this as possible; I do not want to be in the business of keeping user passwords secure. I could see handling the user/group/permission relationships myself if there is not a good out-of-the-box solution (but that seems highly unlikely). I will accept answers in the form of links to "here is what you need" pages, but not "here is what Kerberos does" unless that page also tells me if it's required for my use case (essentially, I know that AD can speak Kerberos, but I can't tell if I need it to, or if I can just use LDAP, or...).

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• AsteriskNow Migration / Shared Extension Space

  - by Aaron C. de Bruyn

  I am testing the possibility of migrating from an old Avaya phone system to AsteriskNow. The migration would cover several hundred phones--but spread out over several years. (Management wants to move buildings to the new phone system one by one as cables get cut or time permits.) Two other directive is that extensions must not change and they want a GUI that other admins (non-Linux geeks) can manage. They currently use 9XXX for all extensions. We linked the Avaya and Asterisk box via PRI card and they both are communicating. From the Avaya side, if we move (for example) extension 9001 to Asterisk, we forward the call over the PRI to the AsteriskNow box and the SIP phone rings. In AsteriskNow we have an outgoing rule '_9XXX' that routes all 4-digit extensions starting with 9 back to Avaya. Here's the trouble. Dialing 9001 (the extension moved over to AsteriskNow) causes the call to be routed out the PRI to the Avaya box, then the Avaya box routes the call back to Asterisk, and Asterisk routes it to the SIP phone. As we get more and more users switched over, it will use up more and more channels over the PRI card. Is there a way I can ask Asterisk to check it's local extensions first--then forward off to the Avaya system if it starts with '_9XXX'? (I know how I can do it when editing the raw config files, I'm just looking for a way to do it in the GUI so other admins can manage it if necessary.) As a last-ditch plan, I know I can specifically add '_9001' as an outgoing call rule and sent it directly to extension 9001--but I'd really hate to do that for several hundred phones

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• Problem with PXE boot

  - by user70523

  Hi, I followed the following link for PXE boot, http://www.howtoforge.com/setting-up-a-pxe-install-server-on-ubuntu-9.10-p3 and I was able to ping the client from the server and also when I booted up the client It is getting the IP address from the server. But later,I got this error PXELinux 3.82 2009-06-09 . . . [other informations] !PXE Entry point found (we hope) at 9D3B:0109 via plan A UNDI code segment at 9D3B len 16C2 UNDI data segment at 933B len A000 Getting cached packet 01 02 03 . . . [other informations] TFTP prefix: Trying to load: pxelinux.cfg/ec5db4c0-74fe-d511-b9e7-3d9235afe5a1 Trying to load: pxelinux.cfg/01-00-17-31-b6-5e-a8 Trying to load: pxelinux.cfg/0A64491E Trying to load: pxelinux.cfg/0A64491 Trying to load: pxelinux.cfg/0A6449 Trying to load: pxelinux.cfg/0A644 Trying to load: pxelinux.cfg/0A64 Trying to load: pxelinux.cfg/0A6 Trying to load: pxelinux.cfg/0A Trying to load: pxelinux.cfg/0 Trying to load: pxelinux.cfg/default Unable to locate configuration file Boot failed: press a key to retry or wait for reset I have put all the files mentioned in the link in tftpboot. Can anyone explain what could be the problem. Thanks in advance

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• "Modern" Ethernet over coax

  - by Electrons_Ahoy

  So, I've just bought a house. It's reasonably new - built in the early '00s. One of the features that got built in was a cable TV drop in every room. The cabling is gorgeous - there's even a wiring cabinet of sorts in a closet where the cables all tie together to the splitter to the outside line. Of course, my problem is that I only own the one TV. I do, however, own a few computers. What I would love to be able to do is drop a switch in the wiring closet and run 100/1000BASE-T ethernet over the coax in the walls I wouldn't otherwise be using. My fantasy would be if you could get some kind of adapter-plug-thing that would take a coax plug on one side and a cat5/RJ45 plug on the other. Had anyone else done this? Any suggestions? (There are a few other options that suggest themselves - first, I could just use the existing cabling channels and re-run cat5 or 6 through the walls. While tempting, that sounds like more work than I really want to put in, so I'm calling that Plan B. Also, I could just scare up a mess of old 10BASE2 cards and run the house on thinnet, all mid-90s style. While I think I'd get major style points for that, I don't think I can get a 10BASE2 adapter for the new laptop. Also, I have all these super-snazzy gigabit adaptors I'd like to be using. And so forth.)

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• 3d Studio Max and 2+CPUs - Core limit ?

  - by FreekOne

  Hi guys, I am scouting for parts to put in a new machine, and in the process, while looking at different benchmarks I stumbled upon this benchmark and it got me a bit worried. Quote form it: Noticably absent from this review is an old-time favorite, 3ds Max. I did attempt to run our custom 3ds Max benchmark on both the 2009 and 2010 versions of the software, but the application would simply not load on the Westmere box with hyper-threading enabled. Evidently Autodesk didn't plan far enough ahead to write their software for more than 16 threads. Once there is an update that addresses this issue, I will happily add 3ds Max back into the benchmarking mix. Since I was looking at dual hexa-core Xeons (x5650), that would put my future machine at 24 logical cores which (duh) is well over 16 cores and since I'm mostly building this for 3DS Max work, you can see how this would seriously spoil my plans. I tried looking for additional information on this potential issue, but the above article seems to be the only one who mentions it. Could anyone who has access to a 16 core machine or an in-depth knowledge about 3DS Max please confirm this ? Any help would be much appreciated !

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• Advice on migrating from a Samba PDC

  - by pgb

  When we started our software development company, we decided to use Samba as a PDC for the few Windows workstations we had. We use Samba with OpenLDAP, and it has been a good replacement for AD for almost 6 years now (using Windows XP workstations). Now I'm facing a few problems with our setup: The Linux server where the PDC runs is very outdated (and is a Gentoo install, don't ask why!) We started using Windows 7 on some of the workstations, and these can't join the Samba domain (there's a workaround, I know) Our company has grown a bit, and we have now about 20 workstations (and plan to have more in the near future). I have to reinstall our PDC, and was thinking on updating to another Linux distro and the latest Samba 3.4. However, I started having second thoughts, and now I think going to a Windows Server for the PDC is the way to go. The main drivers to opt for a Windows Server would be its easy administration and the ability to use Windows 7 out of the box, without any registry hacks. My question(s) then is(are): How should I do this migration? Can I keep the same domain name? What will happen to the users? Will they be recreated and won't be identified by the workstations as being the same user, even if the actual username is the same? What steps would you recommend me to migrate from Samba to Windows Server? Bonus question: If you think staying in Samba is the way to go with my current setup, I'm also interested on your thoughts.

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• Hardware for a home server running Windows Server 2008 R2 Hyper-V or Microsoft Hyper-V Server 2008 R2

  - by David Hayes

  Hi, I'm planning to build a server to do the following Act as a file server (videos, pictures music) Run Squeezebox server Run Zune Software to allow wireless syncing to Windows Phone 7 I'd also like to aim for Low power usage (i'd settle for less than the 90-100Watts I'm using atm Flexibility, I might want to add a web server or sharepoint or... Something I can learn/test on, work is mainly a Windows shop but I do have Linux experience too I'd like to take a look at App-V (application virtualization) too I'd like it to cost less than $1000 Quiet would be nice but not essential (it'll be in the basement) I'm thinking of getting a technet subscription to get access to Windows Server 2008 R2 at a reasonable price ($199) So my plan was this Get a bunch of 2TB Caviar green drives to RAID up (RAID 1 or 6 probably) Get a Quad core CPU (Intel i5/i7 probably) Install a Hypervisor Install w2k8 R2 Storage Server for a NAS Install Windows 7 Pro to run Zune/Squeeze box Install any other machines I want to play with Questions Can anyone see any issues with this or have any better ideas? Do you think I'd need an i7 over an i5? Is 4 cores enough/too much? Can anyone sugest a nice, reasonably priced case that will hold 6-8 drives and stay cool Should I wait for Sandy Bridge parts?

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• Is there a way to tell what the download speed is from a site/server

  - by Memor-X

  i'm looking into which ISP i should go with at the place i'm moving into, one ISP which i have been told good things about has data limits (which when breached will drop your speed to dial-up speed) but multiple memberships which, apart from the cheapest membership, have the same data limits (the cheapest has a 10GB data limit) in their fine print, they say that each different membership has different port speeds, one particular part jumps out at me These speeds are the NBN (National Broadband Network) port speed and not the actual Internet data speed which will vary based on numerous factors including destination you are reaching, your network equipment, network congestion etc. i plan to use the net to download DLC and patch updates for games (particular the insanely large update for the Wii U) and games from Steam (if i find any good one other than this one JRPG) and downloading development resources from free sites like Deposit Files and Mediafire since one membership with a 1000GB data limit is $145 with the port speed being 12Mbps/1Mbps (cheapest) while another with the same limit is $190 with the port speed of 100Mbps/40Mbps (expensive) i am wondering how i can tell what the speed coming from site is since i don't want to be wasting money on speed that makes no difference (unlike memory which i rather have to spare) NOTE: the speeds are for a fiber optic network which where my new place is can only connect via fixed wireless which i may not be able to get with this ISP but if i can get this network then good NOTE 2: most of the resources i get from Deposit Files are always about 200 MB or less, if a resource pack is greater then it's split into multiple archives (like .7z.part) while Mediafire i have to see one bigger than 150MB NOTE 3: one update patch for a PS3 game is close to 4 GB (Disgaea 4) which i need to get access to the DLC and on the weekend i downloaded 5 GB for the Final Fantasy XIV Open Beta for the PS3 which took almost 5 hours

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