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• MX Record Propagation

  - by Ryan

  How long does it take a change in MX records to propagate? Is the MX record TTL the max time it will take or do we also need to wait for all DNS records to propagate? We are changing our mail server from Exchange 2003 to Exchange Online. Our current MX records (at Network Solutions) have a 1 & 2 hour TTL (primary and backup MX respectively). When we change the MX records to point to Exchange Online should all MX records worldwide be updated within 2-4 hours or should we assume the traditional 48 hours for DNS to propagate? I assume that once all MX records propagate that all new incoming email will be directed to the new server.

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• Ubuntu: The Movie

  - by CYREX

  Since Ubuntu is the most popular distribution and has made a lot of changes in many places around the globe and in different industries up to the point where even people that do not know what Linux is, they know what Ubuntu is (go figure? ) there might be a movie coming someday (like the social network for Facebook or Revolution OS for Linux/Red Hat) i wanted to know how it all came to be from the actual players in the show. UBUNTU: The Movie Since i have seen several of the primary characters of the movie here, this might be a good place to start on how it all came to be. Not in the traditional wikipedia way or the ubuntu help section, but in the what the actual developers have in mind on how it all went down to the point of having a huge amount of users, an incredible level sophistication in the forum, help sections, installers, etc.. This is just to have the KNOW HOW before the actual movie makes it out some day in the future. As a fan of Ubuntu this is a MOST KNOW! ;) Hope i made some people happy and some other shy hehe.

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• How to skip pushing the default gateway via DHCP in OpenWRT?

  - by francadaval

  I have a router with OpenWRT that I want to resolve IP addressing with DHCP without setting a default gateway. I have added a DHCP-Option parameter with value 3,0.0.0.0 that is supposed to set the default gateway by DHCP. Instead, the router IP is defined as default gateway for DHCP connections. How can I set a null default gateway (0.0.0.0) for connections configuration by DHCP? As said in a comment: I want this router to service a VirtualBox network that doesn't set a default gateway via DHCP.

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• Stripping a spike from rrdtool when removespike.pl doesn't find any

  - by raccettura

  I know when rrdtool graphs (using rrdtool 1.4) network traffic and the host is restarted a spike is a pretty normal thing to see. In the past I've just run that removespike.pl script that is hosted by the author and it strips the spike and I'm good to go. The last few times I've rebooted removespike.pl finds no spikes, but it's obvious that there are spikes. So my question is, how can I easily remove these spikes and get my graphs usable again? Right now it's so skewed it's meaningless.

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• Performance-Driven Development

  - by BuckWoody

  I was reading a blog yesterday about the evils of SELECT *. The author pointed out that it's almost always a bad idea to use SELECT * for a query, but in the case of SQL Azure (or any cloud database, for that matter) it's especially bad, since you're paying for each transmission that comes down the line. A very good point indeed. This got me to thinking - shouldn't we treat ALL programming that way? In other words, wouldn't it make sense to pretend that we are paying for every chunk of data - a little less for a bit, a lot more for a BLOB or VARCHAR(MAX), that sort of thing? In effect, we really are paying for that. Which led me to the thought of Performance-Driven Development, or the act of programming with the goal of having the fastest code from the very outset. This isn't an original title, since a quick Bing-search shows me a couple of offerings from Forrester and a professional in Israel who already used that title, but the general idea I'm thinking of is assigning a "cost" to each code round-trip, be it network, storage, trip time and other variables, and then rewarding the developers that come up with the fastest code. I wonder what kind of throughput and round-trip times you could get if your developers were paid on a scale of how fast the application performed... Share this post: email it! | bookmark it! | digg it! | reddit! | kick it! | live it!

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• Why use multiple partitions on a rhel server?

  - by Jakobud

  I'm about to reformat and reinstall CentOS onto an old server. The server runs on a modest 30 node small business network and has a variety of responsibilities including MySQL, a Samba share, DHCPd & SVN/Trac. The old sysadmin had this server setup with almost a dozen different partitions for various things. I'm trying to understand what the advantages of multiple partitions are as opposed to a just one filesystem at /. Speed? Flexibility? Security? It seems like if you misjudge the necessary size for any given partition and it ends up filling up too fast, it requires a sysadmin to go in and expand the partition, etc... Seems like it would be easier if everything was just one flat / filesystem. But I'm sure there are some advantages I'm not aware of. The server is currently running a handful of HDDs raided to ~2TB (raid 0).

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• Where is the actual content in a TCP segment

  - by packetloss

  When I email something or download a program, or do anything else over a network, where in the segment is the actual content? If I am emailing a 20KB word document, and the maximum data field size in a segment is 1500 bytes, does that mean it takes about 14 segments to mail my document wherever it is going? I get, I think, the OSI model and I have a decent grasp of the IP protocol. I think I understand the concept of header wrapping of each successive layer in the protocol stack. What I can't get a definitive answer to is where does the actual content go in a TCP segment? Is that the datagram? Maybe the fact I am asking proves I have no clue... Many thanks.

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• Solaris Administration Web GUI?

  - by Robert C

  I recently installed Solaris 11 x86 text install (http://www.oracle.com/technetwork/server-storage/solaris11/downloads/index.html?ssSourceSiteId=ocomen) to be used as a file server running ZFS. I noticed that I'm given the bare minimum in terms of packages. Is there an official oracle web GUI for managing ZFS? I ran a netstat and it doesn't appear to have installed any webserver thats listening. I saw something from a couple years ago, but apparently it's not packaged or maintained anymore (https://blogs.oracle.com/talley/entry/manage_zfs_from_your_browser). I tried pkg install network-console, but it says that the package isn't available for my platform. Any ideas? I'd like to stick with Oracle Solaris instead of the open source alternatives, if possible.

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• Remote connection IP to use

  - by petwho

  I have two laptops that both run on ubuntu and installed ssh server and ssh client on them. One is usually on my desk at home and one I usually bring to my company. When I'm at home I can easily ssh to one from the other by typing this command (to login to the other laptop whose IP address is: 192.168.0.105) : ssh -p 22 [email protected] However, When I'm at my company, I try to type the same command and ofcourse it doesn't work. I understand that when at home I'm on LAN network, that my laptops actually using my ISP's address which differ from 192.168.0.107 asummed 203.113.131.1. So could you tell me what IP that ssh shoud use for my laptop (at work) to connet to my computer at home? Thank you.

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• accessing a web server from the LAN and WAN

  - by jessh

  My router does not support loopback. In order to view a webpage on my server, I either have to type in the local ip (192.168.1.201), or be on another network. What are my options for making this easier? Here are some possible things: Route all web traffic through an external proxy (seems to be overkill) Run my own DNS server (where to start?!) Buy a new router that supports loopback. Surely there is another way that I can use my laptop on the LAN and the WAN by typing in my domain more easily than these solutions.

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• Oracle Open World 2013 - JD Edwards at Your Fingertips

  - by KemButller

  The Oracle & JD Edwards Universe at Your Fingertips!  Oracle Open World features thousands of sessions from which attendees can choose, including keynotes, technical sessions, demos, and hands-on labs. Hundreds of exhibitors will be on hand to share what they’re bringing to the leading edge of Oracle technology. You will have an infinite number of opportunities to network, trade information with peers, and gain insights from experts. For JD Edwards’ customers this valuable experience is twofold. Enjoy the convenience of attending the core JD Edwards’ program featured at the Intercontinental Hotel and experience the keynotes, educational sessions, networking events and partner solutions exhibited at the adjacent Moscone Convention Center.  Highlights for JD Edwards Customers:  Kickoff with the JD Edwards General Session, followed by product strategy road map sessions.  Select from over 60 educational sessions specifically applicable to JD Edwards.  Deepen your knowledge by attending the JD Edwards EnterpriseOne technical hands on lab sessions including: o One View Reporting – basic and advanced o EnterpriseOne Page Generator o User Interface Personalization o Configuring Composite Applications with Café One  Chose from thousands of educational sessions offered throughout the entire conference covering Oracle applications, industries, middleware, server and storage systems and database.  Meet the JD Edwards experts in the Oracle DEMOGrounds and get hands on experience with the latest and hottest features in Applications, Tools and Technologies, Mobility, In-Memory Applications, Health and Safety Incident Management, User Experience and Reporting.  Visit the JD Edwards Partner Pavilion at the Intercontinental Hotel featuring partner organizations with solutions for JD Edwards’ customers.  Meet with the Oracle JD Edwards Upgrade team during the conference as part of the Upgrade Care Program. Maximize your conference experience and leave with the information and contacts you need to turbo-charge your upgrade planning. Contact Barbara.canham-AT-oracle-DOT-com prior to the conference for more information.  Arrive on Sunday to participate in sessions presented by the Special Interest Groups of Quest International User Group. Oracle OpenWorld

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• Ubuntu 12.04 Netinstall URL? Xen Host

  - by notFound

  Well I have an Xen server, I've got a CentOS container up fine but a friend of mine wants (oh god) Ubuntu Server 12.04, why he can't use Debian is beyond my understanding. But anyways, I can't remember how I installed the CentOS container but I'm giving virt-manager a try now, since I don't have a disk image already the only option is to get a Network Install URL since I'm using PV. So does anyone know what I should type in there, if it was CentOS I could easily type http://mirror.centos.org/centos/6.2/os/i386 for example. The furthest I've got in finding a suitable URL is http://archive.ubuntu.com/ubuntu/dists/precise/ but that of course wont work. Any ideas?

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• Acer Aspire 3680 Wireless Signal Problem

  - by SHiNKiROU

  I am using Acer Aspire 3680. I recently reinstalled Windows Vista, and the wireless did not work by default. I installed the "Atheros Wireless LAN Driver" on this site: http://support.acer-euro.com/drivers/notebook/as_3680.html The result, the wireless APs are successfully scanned. However, when I tried to join a network, even with 5/5 signal, an error message showed up diagnosing signal too little. I restarted as Ubuntu, and wireless worked perfectly, with same computer position. Even more confusing, When I moved to the kitchen (2 meters close to the router), the wireless connected, when I move back to my room, wireless failed on Vista and worked on Ubuntu. It is clearly the driver problem. Acer laptops seems come with pre-installed drivers, but after re-installation, they are all gone. (I can't find the original Acer backup disc) Please do not answer "move closer to the AP" and something related to "interference", as wireless worked with Ubuntu's default driver.

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• Server Core remote management from Windows 7 machine

  - by Robert Koritnik

  I've installed Remote Server Administration Tools for Windows 7 because I would like to administer my Windows Server 2008 R2 Server Core machine. The problem that I'm getting when I try to run Server Manager is: Connecting to remote server failed with the following error message: Access is denied. For more information, see the about_Remote_Troubleshooting Help topic. This is what I've done so far: I'm running WinRM service on both machines (Server and Window 7) I've added my server to trusted hosts on my Windows 7 machine: winrm set winrm/config/client @{TrustedHosts="WINSRV2"} I've added registry entry on Windows 7 machine: reg add HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v LocalAccountTokenFilterPolicy /t REG_DWORD /d 1 /f I've enabled Remote Management inbound rule on server firewall using CoreConfigurator 2.0 both machines are in the same subnet and when I search for network machines on Windows 7 I see my server. Question What else should I do to make it work? I would like to run several different remote management tools against my server machine.

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• links for 2011-03-04

  - by Bob Rhubart

  Joao Oliveira: Forms and Reports 11g Fusion Startup Script "After Fusion Middleware 11g Linux installation (Weblogic, Forms, Reports, Discoverer and Portal or others) probably most of the newcomers will wonder how to create a startup script to start the Weblogic managed Servers when the server starts up or reboots." (tags: oracle fusionmiddleware weblogic) Anthony Shorten: SOA Suite Integration: Part 3: Loading files Anthony says: "One of the most common scenarios in SOA Integration is the loading of a file into the product from an external source. In Oracle SOA Suite there is a File Adapter that can process many file types into your BPEL process." (tags: oracle otn soa soasuite) Francisco Munoz Alvarez: Playing with Oracle 11gR2, OEL 5.6 and VirtualBox 4.0.2 (1st Part) Oracle ACE Francisco Munoz Alvarez kicks off a tutorial on creating an Oracle Database 11gR2 instance using Oracle VirtualBox and OEL. (tags: oracle database virtualbox virtualization) ORACLENERD: VirtualBox and Shared Folders Oracle ACE Chet Justice shares some tips. (tags: oracle otn oracleace virtualization virtualbox) Chris Muir: Check out the ADF content at this year's ODTUG KScope11 conference Oracle ACE Director Chris Muir shares information on this year's ODTUD Kaleidoscope event in Long Beach, CA, June 26-30. (tags: oracle otn oracleace odtug adf) Edwin Biemond: Setting a virtual IP on a specific Network interface with WebLogic 10.3.4 PS3 Edwin says: "If you want High Availability in WebLogic you need to enable the WebLogic server migration, configure the nodemanager, use a virtual / floating IP in your managed servers and channels." (tags: oracle otn oracleace highavailability weblogic virtualization) Markus Eisele: High Performance JPA with GlassFish and Coherence - Part 3 Markus says: "In this third part of my four part series I'll explain strategy number two of using Coherence with EclipseLink and GlassFish. This is all about using Coherence as Second Level Cache (L2) with EclipseLink." (tags: oracle otn oracleace glassfish coherence) Michel Schildmeijer: Set Oracle ESB montoring with Enterprise Manager Grid Control "Monitoring your Oracle SOA Suite environment...can be very complicated, but if you are using Grid Control, Oracle provides you the SOA Management Pack. Unfortunately this SOA Management Pack has pretty detailed OOTB info about BPEL, but for ESB you won’t find any OOTB metrics." (tags: oracle otn soa grid servicebus)

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• Remotely turn on a device that is powered off?

  - by njboot

  Verbatim from the interview between Brian Williams and Edward Snowden last night: Snowden: Any intelligence service in the world that has significant funding and a real technological research team can own that phone [refering to Williams' iPhone] as soon as it connects to a network; it can be theirs. Williams: Can anyone turn it on remotely if it's off? Snowden: They can absolutely turn it on with the power turned off on the device. I concede Snowden's first point, fine. But the last? Does Snowden's last claim, that a powered off mobile device can be remotely turned, have any merit? It seems highly improbable and seemingly impossible.

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• VPN server to access Samba4

  - by VisionIncision

  On my network I have an Ubuntu 12.04 server running Samba4, my domain is fully configured and functional. Now, I would like to enable VPN access over the internet, and have another box to do so. I have been searching on the internet for guides and information etc, but have not been successful. I have however found this guide http://www.howtogeek.com/51237/setting-up-a-vpn-pptp-server-on-debian/ but was wondering if I could adapt it somehow to enable access to my DC services. EDIT: I would need to authenticate my VPN server with my DC, if that is possible of course. Any insight would be wonderful. Regards, Jack Hunt

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• What's Microsoft's strategy on Windows CE development?

  - by Heinzi

  Lots of specialized mobile devices use Windows CE or Windows Mobile. I'm not talking about smart phones here -- I know that Windows Phone 7 is Microsoft's current technology of choice here. I'm talking about barcode readers, embedded devices, industry PDAs with specialized hardware, etc... the kind of devices (Example 1, Example 2) where Windows Phone Silverlight development is not an option (no P/Invoke to access the hardware, etc.). Since direct Compact Framework support has been dropped in Visual Studio 2010, the only option to develop for these device currently is to use outdated development tools (VS 2008), which already start to cause trouble on modern machines (e.g. there's no supported way to make the Windows Mobile Device Emulator's network stack work on Windows 7). Thus, my question is: What are Microsoft's plans regarding these mobile devices? Will they allow native applications on Windows Phone, such that, for example, barcode reader drivers can be developed that can be accessed in Silverlight applications? Will they re-add "native" Compact Framework support to Visual Studio and just haven't found the time yet? Or will they leave this niche market?

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• Oracle Accelerate : Packaged CX Solutions for Growing Companies

  - by Richard Lefebvre

  Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 Oracle Accelerate is Oracle's approach for providing simple to deploy, packaged, enterprise-class software solutions to growing midsize organizations through its network of expert partners. They come with a fixed price, a fixed scope and can be industry- or country-specific. Here is a suggestion of Oracle Accelerate solutions specially tailored for EMEA based customers looking for growing their business with CX technology: Oracle Sales Cloud Birchman Consulting's Oracle Accelerate Solution for Oracle Sales Cloud CSolutor Oracle Accelerate Solution for Oracle Sales Cloud CapricornVentis Oracle Accelerate Solution for Oracle Sales Cloud Oracle Sales Cloud for vertical industries Enigen’s Oracle Accelerate solution for Oracle Fusion CRM for Professional Services BPI's Oracle Accelerate solution for Oracle Sales Cloud for Business Services Companies BPI's Oracle Accelerate Solution for Oracle Sales Cloud for Insurance Companies BPI's Oracle Accelerate solution for Oracle Sales Cloud for Engineering & Construction Companies BPI's Oracle Accelerate Solution for Oracle Sales Cloud for Telecommunications Companies Fellow Consulting's Oracle Accelerate Solution for Oracle Sales Cloud for Consumer Goods industry Fellow Consulting's Oracle Accelerate Solution for Oracle Sales Cloud for Wholesale Distribution Fellow Consulting's Oracle Accelerate Solution for Oracle Sales Cloud for Life Science industry Oracle Service Cloud (RightNow) CapricornVentis Oracle Accelerate Solution for Oracle RightNow Cloud Service for Retail Industry for Ireland CapricornVentis Oracle Accelerate Solution for Oracle RightNow Cloud Service for Retail Industry for the United Kingdom Enigen’s Oracle Accelerate Solution for Oracle RightNow Service Cloud for the United Kingdom DNASTREAM’s RapidLaunch Oracle Accelerate solution for RightNow Oracle Commerce (ATG) ProgiCommerce - an Oracle Accelerate solution for ATG Commerce delivered by PROGIWEB Spindrift Momentum - an Oracle Accelerate Solution for ATG Commerce for Retail Industry e2x RoadRunner - the ATG Oracle Accelerate solution for Manufacturing Industry e2x RoadRunner - the ATG Oracle Accelerate solution for Telecommunications Industry e2x RoadRunner - the ATG Oracle Accelerate solution for Retail Web Commerce

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• Any way to stop VMWare workstation from dropping SSH connections?

  - by oljones

  I have VMWare workstation 8 with a few Linux guests. I have had problems maintaining an active SSH connection to my VMs when they are in bridged mode. I first read that the onboard realtek network cards were not well supported so I bought a Intel Pro/1000 GT card. This supposedly had support. But this made no difference. Connections via SSH are active for about the first 3 minutes then hang and die. I have changed the TCP Checksum offload on the Intel and Realtek NICs, but this only works some of the time and even then not for very long. The best I could do was about 20 minutes before the connection was dropped. Any ideas?

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• How to send mass email and not get treated as spam

  - by MonsterMMORPG

  I am the owner of http://www.monstermmorpg.com which is a free to play browser based monster role playing game. I have a very important announcement to send my above 300k members. I already have email sending software but they drop to the spam. So i want to improve my chances of dropping inbox. I am going to give you all details. Alright my domain registrar is : http://www.godaddy.com/ My hosting company is : http://www.leaseweb.com/en This is my setting at leaseweb: This is my DNS settings at Godaddy: This is how I send emails: MailMessage mail = new MailMessage(); mail.To.Add(EmailAdress); mail.From = new MailAddress("MonsterMMORPG NoReplay <[email protected]>"); mail.Subject = "Title Of Mail"; string Body = "Body Of Mail"; mail.Body = Body; mail.IsBodyHtml = true; SmtpClient smtp = new SmtpClient(); smtp.DeliveryMethod = SmtpDeliveryMethod.Network; smtp.UseDefaultCredentials = true; smtp.Host = "85.17.154.139"; smtp.Port = 25; smtp.Send(mail); Thanks for every kind of answer. I did not make any special setting at SMTP:

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• VPN to Buffalo WHR-HP-G300N produces a Connection Error 807

  - by Darius

  My friend has modem/router from Clear and I have sent him Buffalo router to put it between his Clear device and the Network. I walked him thru establishing VPN in DD-WRT but when I try to VPN I get a VPN Connection Error 807. I am out of ideas how to solve this. Any suggestion? Clear Modem WAN: xx.xx.xx.xx Clearn Modem NAT's to: 192.168.15.XXX Clear Modem DHCP: 192.168.15.2 - 192.168.15.2 (range is limited to that of ONE ip address) Clear Modem DMZ: 192.168.15.2 the LAN of the clear modem is 192.168.15.XXX The DD-WRT IP: 192.168.4.1 Port FWD: 1723 to 192.168.4.1 PPTP server listens on 192.168.4.1 Where is the problem with this setup?

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• DSL PPPoE connection not working?

  - by Mussnoon

  I use a wired PPPoE connection to connect to the Internet. What I need to do on Windows to connect to it is put in static IP address, gateway, subnet mask and DNS servers for my LAN card. Next I have to create a dialer for a PPPoE connection, put in my user name, the service name and the password, and "dial" this connection. And it works fine. On Ubuntu 10.04, however, I have tried setting things up in a similar fashion - put in all static addresses for the "automatic" wired connection, then put in user name, service name, password for a "DSL" connection. It worked for a while, then stopped. I have tried putting in all the details within the DSL configuration dialog, same thing happened - it worked for a while, then stopped. I have tried deleting the ethernet connection and only keeping the DSL one with all the numbers put in place, same thing happened - it worked for a while, then stopped. Each of the times, when it connected, it connected randomly, after trying a few times, and either stopped working within a few minutes, or after I had rebooted. I have deleted and remade the connection dozens of times - even with different names, but nothing seems to be working. I have also tried pppoeconf from the terminal, didn't work. I have checked /var/log/kern.log, but nothing changes in the file when I try to connect. I have also checked /sbin/route, but gedit can't even open it (says it can't figure the character encoding...). The "connection established" notification pops up from the top right corner, the same way as when the computer is actually connected to a network. Can anyone figure what's wrong and how it can be solved?

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• net share not working as expected ?

  - by Riduidel

  Hi, I'm creating a SMB share on a windows machine using the net share command. I write net share MyCompany_server___0.0.1-SNAPSHOT___server=E:\JavaWorkspace\Product\src\generated\server Then, this share is visible by other Windows machine in network shares of my machine, but not be accessed. Is there an option I forgot to set ? EDITED due to comment Accessing the share using an OpenSUSE machine brings the "The folder contents could not be displayed." message. Accessing the share using the Windows machine sharing that folder succeeds without any issue Accessing the share using another Windows machine displays MyCompany_server_0.0.1-SNAPSHOT_server is not accessible. Access refused

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• openwrt uses a single interface bridge?

  - by timbo

  My understanding of bridging is that it ties together two interfaces at layer 2. I am looking at a Ubiquiti Nanostation2 running OpenWRT that has an ethernet port 'eth0' and a wifi port 'ath0'. The ethernet port (the 'wan' port) is not part of the bridge and the bridge is just a single interface. Can anyone clarify this? - seems very different to Ubuntu. /etc/config/network: config 'interface' 'loopback' option 'ifname' 'lo' option 'proto' 'static' option 'ipaddr' '127.0.0.1' option 'netmask' '255.0.0.0' config 'interface' 'wan' option 'ifname' 'eth0' option 'proto' 'dhcp' config 'interface' 'wifi' option 'ipaddr' '192.168.13.1' option 'type' 'bridge' option 'proto' 'static' option 'netmask' '255.255.255.0' option 'ifname' 'wifi0'

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