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  • HOWTO: Use Gnome Network Manager in other DE

    <b>Thoughts on Technology:</b> "As of 10.04 beta I have begun using the KDE desktop environment. I really like many of the things KDE has to offer, however KDE's network manager applet (knetworkmanager) still is lacking compared to Gnome's applet."

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  • New ZFS Encryption features in Solaris 11.1

    - by darrenm
    Solaris 11.1 brings a few small but significant improvements to ZFS dataset encryption.  There is a new readonly property 'keychangedate' that shows that date and time of the last wrapping key change (basically the last time 'zfs key -c' was run on the dataset), this is similar to the 'rekeydate' property that shows the last time we added a new data encryption key. $ zfs get creation,keychangedate,rekeydate rpool/export/home/bob NAME PROPERTY VALUE SOURCE rpool/export/home/bob creation Mon Mar 21 11:05 2011 - rpool/export/home/bob keychangedate Fri Oct 26 11:50 2012 local rpool/export/home/bob rekeydate Tue Oct 30 9:53 2012 local The above example shows that we have changed both the wrapping key and added new data encryption keys since the filesystem was initially created.  If we haven't changed a wrapping key then it will be the same as the creation date.  It should be obvious but for filesystems that were created prior to Solaris 11.1 we don't have this data so it will be displayed as '-' instead. Another change that I made was to relax the restriction that the size of the wrapping key needed to match the size of the data encryption key (ie the size given in the encryption property).  In Solaris 11 Express and Solaris 11 if you set encryption=aes-256-ccm we required that the wrapping key be 256 bits in length.  This restriction was unnecessary and made it impossible to select encryption property values with key lengths 128 and 192 when the wrapping key was stored in the Oracle Key Manager.  This is because currently the Oracle Key Manager stores AES 256 bit keys only.  Now with Solaris 11.1 this restriciton has been removed. There is still one case were the wrapping key size and data encryption key size will always match and that is where they keysource property sets the format to be 'passphrase', since this is a key generated internally to libzfs and to preseve compatibility on upgrade from older releases the code will always generate a wrapping key (using PKCS#5 PBKDF2 as before) that matches the key length size of the encryption property. The pam_zfs_key module has been updated so that it allows you to specify encryption=off. There were also some bugs fixed including not attempting to load keys for datasets that are delegated to zones and some other fixes to error paths to ensure that we could support Zones On Shared Storage where all the datasets in the ZFS pool were encrypted that I discussed in my previous blog entry. If there are features you would like to see for ZFS encryption please let me know (direct email or comments on this blog are fine, or if you have a support contract having your support rep log an enhancement request).

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  • Network Design for a Small Business

    <b>Begin Linux:</b> "This image represents a basic network plan for a small company. The goal of this article is to use this image to help describe basic concepts of networks and how they typically constructed as well as why they are designed the way they are"

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  • Mounting a network filesystem into schroot

    - by haggai_e
    Hi, I'm using a network file system (AFS) and I would like to also mount it into my schroot. Adding a line to /etc/schroot/mount-defaults, with bind or rbind in the options didn't help: schroot always mounts the directory with bind, and it remains empty in the chroot. My current solution is a script that remounts the /afs directory with rbind after the schroot has been set up. Is there a way to make schroot use rbind directly?

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  • connecting ubuntu with 7 via network cable

    - by VeXe
    i was tryin to connect my ubuntu toshiba satalite L650 laptop with my desktop via a network cable so that i can share things and remotely control the desktop from the laptop, i googled the problem out and found a guide page , i followed all the steps , i installed samba, i had the two computer have the same workgroup name , i had everything correct, but i still dont see connection estbalished between the two computers, (neither one is visible to the other) what is missing ? thanx in advance.

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  • Movement prediction for non-shooters

    - by ShadowChaser
    I'm working on an isometric (2D) game with moderate-scale multiplayer - 20-30 players. I've had some difficulty getting a good movement prediction implementation in place. Right now, clients are authoritative for their own position. The server performs validation and broad-scale cheat detection, and I fully realize that the system will never be fully robust against cheating. However, the performance and implementation tradeoffs work well for me right now. Given that I'm dealing with sprite graphics, the game has 8 defined directions rather than free movement. Whenever the player changes their direction or speed (walk, run, stop), a "true" 3D velocity is set on the entity and a packet it sent to the server with the new movement state. In addition, every 250ms additional packets are transmitted with the player's current position for state updates on the server as well as for client prediction. After the server validates the packet, it gets automatically distributed to all of the other "nearby" players. Client-side, all entities with non-zero velocity (ie/ moving entities) are tracked and updated by a rudimentary "physics" system - basically nothing more than changing the position by the velocity according to the elapsed time slice (40ms or so). What I'm struggling with is how to implement clean movement prediction. I have the nagging suspicion that I've made a design mistake somewhere. I've been over the Unreal, Half-life, and all other movement prediction/lag compensation articles I could find, but they all seam geared toward shooters: "Don't send each control change, send updates every 120ms, server is authoritative, client predicts, etc". Unfortunately, that style of design won't work well for me - there's no 3D environment so each individual state change is important. 1) Most of the samples I saw tightly couple movement prediction right into the entities themselves. For example, storing the previous state along with the current state. I'd like to avoid that and keep entities with their "current state" only. Is there a better way to handle this? 2) What should happen when the player stops? I can't interpolate to the correct position, since they might need to walk backwards or another strange direction if their position is too far ahead. 3) What should happen when entities collide? If the current player collides with something, the answer is simple - just stop the player from moving. But what happens if two entities take up the same space on the server? What if the local prediction causes a remote entity to collide with the player or another entity - do I stop them as well? If the prediction had the misfortune of sticking them in front of a wall that the player has gone around, the prediction will never be able to compensate and once the error gets to high the entity will snap to the new position.

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  • How to Stream Videos and Music Over the Network Using VLC

    - by Chris Hoffman
    VLC includes a fairly easy-to-use streaming feature that can stream music and videos over a local network or the Internet. You can tune into the stream using VLC or other media players. Use VLC’s web interface as a remote control to control the stream from elsewhere. Bear in mind that you may not have the bandwidth to stream high-definition videos over the Internet, though. How to Use an Xbox 360 Controller On Your Windows PC Download the Official How-To Geek Trivia App for Windows 8 How to Banish Duplicate Photos with VisiPic

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  • Wired Network (eth0) disappears on a Lenovo Z570

    - by theGeek
    I upgraded from Ubuntu 11.10 to 12.04 yesterday. I am running a BSNL Broadband DSL conenction. The wired network suddenly dissapears and the computer stops detecting the ethernet card after sometime. However, after rebooting, it again becomes alright. Specs : Lenovo Ideapad Z570 Intel i5 2nd Gen. processor 3 GB RAM $ lspci | grep Ethernet 03:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8101E/RTL8102E PCI Express Fast Ethernet controller (rev 05)

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  • Fail to access Network options

    - by Konstantinos Marinis
    I am trying to use OpenDNS for my newly installed Ubuntu 12.10... However I cannot insert custom DNS addresses... I am accessing Network, then at my wireless connection, no matter how many times I press the "options" tab at the low right corner (I am not using english Ubuntu, so the button might have a different name), nothing happens. Any ideas why or how should I configure my OpenDNS connection?

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  • 3 Common Social Media Network ';Threats'; to Avoid

    Online social media network sites have experienced an extraordinary growth in popularity over the last few years. The growth in social media use has captured the attention of not only enthusiastic us... [Author: TJ Philpott - Computers and Internet - May 25, 2010]

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  • Build Your Personal Network

    - by AllenMWhite
    Recently a few people have approached me privately about their careers, and how they can make the changes to allow them to do the kind of work they'd like to do, be it consulting or in a full-time role. (In every case, I was flattered and surprised, as I never felt I had that much insight into career choices.) The most important thing, I told each of them, was to use the network of people you know. You will always be more successful finding opportunities through personal contacts than you will through...(read more)

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  • Common Network Administrator Tools

    - by No Time
    I would like to make a custom clump of Network Admin packages, to be able to carry on a thumb drive, to administer Debian based machines. Examples of what I would include so far: nmap traceroute vnstat zenmap * I know every situation may be different, but I would like to build a toolbox I could bring everywhere, and am looking for advice on other tools which would work. (If there is a similar question, I am fine being directed there)

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  • Upgrade from 12.04 to 12.10 Failed due to network troubles

    - by user99100
    Every time I try and upgrade from 12.04 to 12.10 it keeps telling me that there are network problems. Is this a problem on "the other" side? My upgrade got through downloading half the packages last night but then went into sleep and then failed. Could it have something to do with that? Would I need to open a terminal and clear a "cache" (no idea what I'm talking about here) Thanks (Solved now, tried it again through out the day and it downloaded and installed fine)

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  • network problem

    - by TimbooXD
    I was trying to make my IP static from my ubuntu 12.10 laptop but I made a mistake and after restarting with sudo /etc/init.d/networking restart Ubuntu crashed. So after restart my system it said that it couldn't use the network. Now I need to reconnect to the Internet and make my ip static. It is for a server and that isn't the problem, but how can I reconnect and make my ip static and which data I need to know?

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  • Please Help i keep getting a no match for call to error!!??

    - by Timothy Poseley
    #include <iostream> #include <string> using namespace std; // Turns a digit between 1 and 9 into its english name // Turn a number into its english name string int_name(int n) { string digit_name; { if (n == 1) return "one"; else if (n == 2) return "two"; else if (n == 3) return "three"; else if (n == 4) return "four"; else if (n == 5) return "five"; else if (n == 6) return "six"; else if (n == 7) return "seven"; else if (n == 8) return "eight"; else if (n == 9) return "nine"; return ""; } string teen_name; { if (n == 10) return "ten"; else if (n == 11) return "eleven"; else if (n == 12) return "twelve"; else if (n == 13) return "thirteen"; else if (n == 14) return "fourteen"; else if (n == 14) return "fourteen"; else if (n == 15) return "fifteen"; else if (n == 16) return "sixteen"; else if (n == 17) return "seventeen"; else if (n == 18) return "eighteen"; else if (n == 19) return "nineteen"; return ""; } string tens_name; { if (n == 2) return "twenty"; else if (n == 3) return "thirty"; else if (n == 4) return "forty"; else if (n == 5) return "fifty"; else if (n == 6) return "sixty"; else if (n == 7) return "seventy"; else if (n == 8) return "eighty"; else if (n == 9) return "ninety"; return ""; } int c = n; // the part that still needs to be converted string r; // the return value if (c >= 1000) { r = int_name(c / 1000) + " thousand"; c = c % 1000; } if (c >= 100) { r = r + " " + digit_name(c / 100) + " hundred"; c = c % 100; } if (c >= 20) { r = r + " " + tens_name(c /10); c = c % 10; } if (c >= 10) { r = r + " " + teen_name(c); c = 0; } if (c > 0) r = r + " " + digit_name(c); return r; } int main() { int n; cout << endl << endl; cout << "Please enter a positive integer: "; cin >> n; cout << endl; cout << int_name(n); cout << endl << endl; return 0; } I Keep getting this Error code: intname2.cpp: In function âstd::string int_name(int)â: intname2.cpp:74: error: no match for call to â(std::string) (int)â intname2.cpp:80: error: no match for call to â(std::string) (int)â intname2.cpp:86: error: no match for call to â(std::string) (int&)â intname2.cpp:91: error: no match for call to â(std::string) (int&)â

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  • I keep getting a no match for call to error!!??

    - by Timothy Poseley
    #include <iostream> #include <string> using namespace std; // Turns a digit between 1 and 9 into its english name // Turn a number into its english name string int_name(int n) { string digit_name; { if (n == 1) return "one"; else if (n == 2) return "two"; else if (n == 3) return "three"; else if (n == 4) return "four"; else if (n == 5) return "five"; else if (n == 6) return "six"; else if (n == 7) return "seven"; else if (n == 8) return "eight"; else if (n == 9) return "nine"; return ""; } string teen_name; { if (n == 10) return "ten"; else if (n == 11) return "eleven"; else if (n == 12) return "twelve"; else if (n == 13) return "thirteen"; else if (n == 14) return "fourteen"; else if (n == 14) return "fourteen"; else if (n == 15) return "fifteen"; else if (n == 16) return "sixteen"; else if (n == 17) return "seventeen"; else if (n == 18) return "eighteen"; else if (n == 19) return "nineteen"; return ""; } string tens_name; { if (n == 2) return "twenty"; else if (n == 3) return "thirty"; else if (n == 4) return "forty"; else if (n == 5) return "fifty"; else if (n == 6) return "sixty"; else if (n == 7) return "seventy"; else if (n == 8) return "eighty"; else if (n == 9) return "ninety"; return ""; } int c = n; // the part that still needs to be converted string r; // the return value if (c >= 1000) { r = int_name(c / 1000) + " thousand"; c = c % 1000; } if (c >= 100) { r = r + " " + digit_name(c / 100) + " hundred"; c = c % 100; } if (c >= 20) { r = r + " " + tens_name(c /10); c = c % 10; } if (c >= 10) { r = r + " " + teen_name(c); c = 0; } if (c > 0) r = r + " " + digit_name(c); return r; } int main() { int n; cout << endl << endl; cout << "Please enter a positive integer: "; cin >> n; cout << endl; cout << int_name(n); cout << endl << endl; return 0; } I Keep getting this Error code: intname2.cpp: In function âstd::string int_name(int)â: intname2.cpp:74: error: no match for call to â(std::string) (int)â intname2.cpp:80: error: no match for call to â(std::string) (int)â intname2.cpp:86: error: no match for call to â(std::string) (int&)â intname2.cpp:91: error: no match for call to â(std::string) (int&)â

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  • What is the best error monitoring tool for Ruby on Rails applications?

    - by marcgg
    I'm looking for something to track the errors being raised across our multiple rails applications on our multiple servers. Ideally: the application failings sends an email to [email protected] and the email is processed in another application. This application will then show us some stats and give us some kinds of auditing tools. A service like Hoptoad might do the trick, but I'm trying to see what's available these days. Ideally free or cheap, of course...

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  • Shows error message "ialmrnt 5 display driver stooped working".

    - by user68705
    when ever i play movie with high resolution(720hz) My Destop PC shows a black screen and after a while shows message "ialmrnt 5 display driver stooped working". and i am having the following configuration 1GB RAM DDR1 windows xp OS processor- Intel Pentium 4 Processor Srm-Motherboard Graphics Driver Product Detected -Intel® 845G Current Driver Installed-6.14.10.3889 Intel Chipset Software Installation Utility (Chipset INF) - Current Version Installed 9.1.0.1012 kindly help me to fix this problem

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