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  • Can you tell by the network traffic whether a video was watched or downloaded from YouTube?

    - by humanityANDpeace
    My question is about quite popular YouTube downloaders like youtube-dl (a command line program) or VideoDownloadHelper (a Firefox-browser extension). Comparing two cases: Watching a video on YouTube Download the video using a downloader (to be specific let's assume youtube-dl) Is it possible to tell – for instance by inspecting the network traffic – that the video was downloaded and not "only watched" on YouTube? Maybe one could compare network traffic using programmes like Wireshark? I cannot do that myself, but maybe this will help somebody to answer the question.

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  • what 802.1x key_mgmt/eap does wired network normally uses?

    - by tuma
    I'm really new to 802.1x but I'm trying to use 802.1x authentication in a wired network. My desktop is Linux (centos) using wpa_supplicant as the supplicant. I'm wondering what key_mgmt/eap is normally used in the wired environment? I went through http://en.wikipedia.org/wiki/Extensible_Authentication_Protocol but it doesn't clearly say which method/encapsulation is normally used for wired network. Can anyone give me a hint? Thanks.

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  • Announcing Solaris Technical Track at NLUUG Spring Conference on Operating Systems

    - by user9135656
    The Netherlands Unix Users Group (NLUUG) is hosting a full-day technical Solaris track during its spring 2012 conference. The official announcement page, including registration information can be found at the conference page.This year, the NLUUG spring conference focuses on the base of every computing platform; the Operating System. Hot topics like Cloud Computing and Virtualization; the massive adoption of mobile devices that have their special needs in the OS they run but that at the same time put the challenge of massive scalability onto the internet; the upspring of multi-core and multi-threaded chips..., all these developments cause the Operating System to still be a very interesting area where all kinds of innovations have taken and are taking place.The conference will focus specifically on: Linux, BSD Unix, AIX, Windows and Solaris. The keynote speech will be delivered by John 'maddog' Hall, infamous promotor and supporter of UNIX-based Operating Systems. He will talk the audience through several decades of Operating Systems developments, and share many stories untold so far. To make the conference even more interesting, a variety of talks is offered in 5 parallel tracks, covering new developments in and  also collaboration  between Linux, the BSD's, AIX, Solaris and Windows. The full-day Solaris technical track covers all innovations that have been delivered in Oracle Solaris 11. Deeply technically-skilled presenters will talk on a variety of topics. Each topic will first be introduced at a basic level, enabling visitors to attend to the presentations individually. Attending to the full day will give the audience a comprehensive overview as well as more in-depth understanding of the most important new features in Solaris 11.NLUUG Spring Conference details:* Date and time:        When : April 11 2012        Start: 09:15 (doors open: 8:30)        End  : 17:00, (drinks and snacks served afterwards)* Venue:        Nieuwegein Business Center        Blokhoeve 1             3438 LC Nieuwegein              The Nederlands          Tel     : +31 (0)30 - 602 69 00        Fax     : +31 (0)30 - 602 69 01        Email   : [email protected]        Route   : description - (PDF, Dutch only)* Conference abstracts and speaker info can be found here.* Agenda for the Solaris track: Note: talks will be in English unless marked with 'NL'.1.      Insights to Solaris 11         Joerg Moellenkamp - Solaris Technical Specialist         Oracle Germany2.      Lifecycle management with Oracle Solaris 11         Detlef Drewanz - Solaris Technical Specialist         Oracle Germany3.      Solaris 11 Networking - Crossbow Project        Andrew Gabriel - Solaris Technical Specialist        Oracle UK4.      ZFS: Data Integrity and Security         Darren Moffat - Senior Principal Engineer, Solaris Engineering         Oracle UK5.      Solaris 11 Zones and Immutable Zones (NL)         Casper Dik - Senior Staff Engineer, Software Platforms         Oracle NL6.      Experiencing Solaris 11 (NL)         Patrick Ale - UNIX Technical Specialist         UPC Broadband, NLTalks are 45 minutes each.There will be a "Solaris Meeting point" during the conference where people can meet-up, chat with the speakers and with fellow Solaris enthousiasts, and where live demos or other hands-on experiences can be shared.The official announcement page, including registration information can be found at the conference page on the NLUUG website. This site also has a complete list of all abstracts for all talks.Please register on the NLUUG website.

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  • Can we set up svn server on a local computer without any network access?

    - by Aitezaz Abdullah
    I want to set up an SVN repository on my computer without any network access. I am working on a code without any collaborator, so I don't want it to be publicly available. I read the following post. http://stackoverflow.com/questions/6001445/local-source-control-repository-cross-platform but this post suggests using online svn repository services that give free repositories. In that case, my code will be publicly available (as is included in the terms of free plans). So I was wondering if I can set up a local server on my windows xp machine that only I access even when I don't have any internet connection?

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  • With CentOS 6 and LXC, "ifconfig" is unable to see network interface (but busybox "ifconfig" works fine)

    - by larsks
    I've just started working with LXC under CentOS 6 (via the libvirt adapter). If I create an LXC container, I'm unable to see any network interfaces when using the native system tools: # ifconfig -a # The behavior is very odd; specifying an interface by names yields neither the expected output nor an error message. This is true even for clearly invalid interface names, like this: # ifconfig foo # The ip command exhibits the same behavior. On the other hand, if I use "ifconfig" provided by busybox, everything works as expected: # busybox ifconfig -a eth0 Link encap:Ethernet HWaddr 52:54:00:E0:12:C8 inet6 addr: fe80::5054:ff:fee0:12c8/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:268 errors:0 dropped:0 overruns:0 frame:0 TX packets:6 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:17814 (17.3 KiB) TX bytes:552 (552.0 B) lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B) So...what does busybox know that the native tools don't? The libvirt config for this environment is pretty standard; the network definition looks like this: <interface type='network'> <mac address='52:54:00:e0:12:c8'/> <source network='default'/> <target dev='veth0'/> </interface> The full configuration is here if you think it might help. I'm running: lxc-0.7.2-2.el6.x86_64 kernel-2.6.32-71.29.1.el6.x86_64 EDIT Weirder and weirder...it's a display issue, not a functionality issue. I can see the output of ifconfig if I pipe it into anything, so for example: # ifconfig eth0 | cat eth0 Link encap:Ethernet HWaddr 52:54:00:E0:12:C8 inet addr:192.168.10.10 Bcast:192.168.10.255 Mask:255.255.255.0 inet6 addr: fe80::5054:ff:fee0:12c8/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:573 errors:0 dropped:0 overruns:0 frame:0 TX packets:6 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:37914 (37.0 KiB) TX bytes:552 (552.0 b) And in fact even when not piping the output, strace shows that ifconfig is in fact writing the output to file descriptor 1 (aka stdout), so it's not clear why no output is actually showing up. This could be either an LXC or a virsh issue, I guess.

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  • Seven Random Thoughts on JavaOne

    - by HecklerMark
    As most people reading this blog may know, last week was JavaOne. There are a lot of summary/recap articles popping up now, and while I didn't want to just "add to pile", I did want to share a few observations. Disclaimer: I am an Oracle employee, but most of these observations are either externally verifiable or based upon a collection of opinions from Oracle and non-Oracle attendees alike. Anyway, here are a few take-aways: The Java ecosystem is alive and well, with a breadth and depth that is impossible to adequately describe in a short post...or a long post, for that matter. If there is any one area within the Java language or JVM that you would like to - or need to - know more about, it's well-represented at J1. While there are several IDEs that are used to great effect by the developer community, NetBeans is on a roll. I lost count how many sessions mentioned or used NetBeans, but it was by far the dominant IDE in use at J1. As a recent re-convert to NetBeans, I wasn't surprised others liked it so well, only how many. OpenJDK, OpenJFX, etc. Many developers were understandably concerned with the change of sponsorship/leadership when Java creator and longtime steward Sun Microsystems was acquired by Oracle. The read I got from attendees regarding Oracle's stewardship was almost universally positive, and the push for "openness" is deep and wide within the current Java environs. Few would probably have imagined it to be this good, this soon. Someone observed that "Larry (Ellison) is competitive, and he wants to be the best...so if he wants to have a community, it will be the best community on the planet." Like any company, Oracle is bound to make missteps, but leadership seems to be striking an excellent balance between embracing open efforts and innovating in competitive paid offerings. JavaFX (2.x) isn't perfect or comprehensive, but a great many people (myself included) see great potential, are developing for it, and are really excited about where it is and where it may be headed. This is another part of the Java ecosystem that has impressive depth for being so new (JavaFX 1.x aside). If you haven't kicked the tires yet, give it a try! You'll be surprised at how capable and versatile it is, and you'll probably catch yourself smiling while coding again.  :-) JavaEE is everywhere. Not exactly a newsflash, but there is a lot of buzz around EE still/again/anew. Sessions ranged from updated component specs/technologies to Websockets/HTML5, from frameworks to profiles and application servers. Programming "server-side" Java isn't confined to the server (as you no doubt realize), and if you still consider JavaEE a cumbersome beast, you clearly haven't been using the last couple of versions. Download GlassFish or the WebLogic Zip distro (or another JavaEE 6 implementation) and treat yourself. JavaOne is not inexpensive, but to paraphrase an old saying, "If you think that's expensive, you should try ignorance." :-) I suppose it's possible to attend J1 and learn nothing, but you'd have to really work at it! Attending even a single session is bound to expand your horizons and make you approach your code, your problem domain, differently...even if it's a session about something you already know quite well. The various presenters offer vastly different perspectives and challenge you to re-think your own approach(es). And finally, if you think the scheduled sessions are great - and make no mistake, most are clearly outstanding - wait until you see what you pick up from what I like to call the "hallway sessions". Between the presentations, people freely mingle in the hallways, go to lunch and dinner together, and talk. And talk. And talk. Ideas flow freely, sparking other ideas and the "crowdsourcing" of knowledge in a way that is hard to imagine outside of a conference of this magnitude. Consider this the "GO" part of a "BOGO" (Buy One, Get One) offer: you buy the ticket to the "structured" part of JavaOne and get the hallway sessions at no additional charge. They're really that good. If you weren't able to make it to JavaOne this year, you can still watch/listen to the sessions online by visiting the JavaOne course catalog and clicking the media link(s) in the right column - another demonstration of Oracle's commitment to the Java community. But make plans to be there next year to get the full benefit! You'll be glad you did. All the best,Mark P.S. - I didn't mention several other exciting developments in areas like the embedded space and the "internet of things" (M2M), robotics, optimization, and the cloud (among others), but I think you get the idea. JavaOne == brainExpansion;  Hope to see you there next year!

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  • Why are .local and .arpa DNS queries showing up outside my network on OpenDNS?

    - by Baodad
    We have a Windows office network with a local Actice Directory/DNS domain server. The server is set up with OpenDNS's servers as forwarders (see screenshot). However, when I look at my OpenDNS query statistics, I notice that the 3rd most popular query is *.in-addr-arpa, and the 12th is *.local which is from our local domain. Should I, or how can I prevent these local queries from going beyond my local network?

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  • Cookbook: SES and UCM setup

    - by George Maggessy
    The purpose of this post is to guide you setting up the integration between UCM and SES. On my next post I’ll show different approaches to integrate WebCenter Portal, UCM and SES based on some common scenarios. Let’s get started. WebCenter Content Configuration WebCenter Content has a component that adds functionality to the content server to allow it to be searched via the Oracle SES. To enable the component installation, go to Administration -&gt; Admin Server and select SESCrawlerExport. Click the update button and restart UCM_server1 managed server. Once the managed server is back, we’ll configure the component. In the menu, under Administration you should see SESCrawlerExport. Click on the link. You’ll see the window below. Click on Configure SESCrawlerExport. Configure the values below: Hostname: SES hostname. Feed Location: Directory where data feeds will be saved. Metadata List: List of metadata that will be searchable by SES. After updating the values click on the Update button. Come back to the SESCrawlerExport Administration UI and click on Take Snapshot button. It will create the data feeds in the specified Feed Location. To check if the correct configuration was done, please access the following URL http://&lt;ucm_server&gt;:&lt;port&gt;/cs/idcplg?IdcService=SES_CRAWLER_DOWLOAD_CONFIG&amp;source=default. It should download config file in the format below: &lt;?xml version="1.0" encoding="UTF-8"?&gt; &lt;rsscrawler xmlns="http://xmlns.oracle.com/search/rsscrawlerconfig"&gt; &lt;feedLocation&gt;&lt;![CDATA[http://adc6160699.us.oracle.com:16200/cs/idcplg?IdcService=SES_CRAWLER_DOWNLOAD_CONTROL&amp;source=default]]&gt;&lt;/feedLocation&gt; &lt;errorFileLocation&gt;&lt;![CDATA[http://adc6160699.us.oracle.com:16200/cs/idcplg?IdcService=SES_CRAWLER_STATUS&amp;IsJava=1&amp;source=default&amp;StatusFeed=]]&gt;&lt;/errorFileLocation&gt; &lt;feedType&gt;controlFeed&lt;/feedType&gt; &lt;sourceName&gt;default&lt;/sourceName&gt; &lt;securityType&gt;attributeBased&lt;/securityType&gt; &lt;securityAttribute name="Account" grant="true"/&gt; &lt;securityAttribute name="DocSecurityGroup" grant="true"/&gt; &lt;securityAttribute name="Collab" grant="true"/&gt; &lt;/rsscrawler&gt; Make sure Account and DocSecurityGroup values are true. SES Configuration Let’s start by configuring the Identity Plug-ins in SES. Go to Global Settings -&gt; System -&gt; Identity Management Setup. Select Oracle Content Server and click the Activate button. We’ll populate the following values: HTTP endpoint for authentication: URL to WebCenter Content. Notice that /cs/idcplg was added at the end of the URL. Admin User: UCM Admin user. This user must have access to all CPOE content. Password: Password to Admin user. Authentication Type: NATIVE. Go back to the Home tab and click on Sources on the top left. Select Oracle Content Server on the right and click the Create button. Configuration URL: URL that point to the configuration file. Example: http://&lt;ucm_hostname&gt;:&lt;port&gt;/cs/idcplg?IdcService=SES_CRAWLER_DOWNLOAD_CONFIG&amp;source=default. User ID: UCM Admin user. Password: Password to Admin user. Click on the Authorization tab and add the appropriate values to the fields below. Make sure you see the ACCOUNT and DOCSECURITYGROUP security attributes at the end of the page. HTTP endpoint for authorization: http://&lt;ucm_hostname&gt;:&lt;port&gt;/cs/idcplg. Display URL prefix: http://&lt;ucm_hostname&gt;:&lt;port&gt;/cs. Administrator user: UCM Admin user. Administrator password. On the Document Types tab, add the documents that should be indexed by SES. As our last step, we’ll configure the Federation Trusted Entities under Global Settings. Entity Name: The user must be present in both the identity management server configured for your WebCenter application and the identity management server configured for Oracle SES. For instance, I used weblogic in my sample. Password: Entity user password.\ Now you are ready to test the integration on the SES UI: http://&lt;ses hostname&gt;:&lt;port&gt;/search/query/.

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  • I have 20 Ubuntu 12.04 LTS machines Some are unable to network with other machines , they all have same workgroup viz. Ubuntu

    - by Gaurang Agrawal
    During installation I updated my workgroup to "Workgroup" , after installation I changed it to ubuntu as I was unable to access computers in network . What changes do I need to make in samba configuration ? I don't know if this is related , shared@shared:~$ testparm Load smb config files from /etc/samba/smb.conf rlimit_max: increasing rlimit_max (1024) to minimum Windows limit (16384) Processing section "[printers]" Processing section "[print$]" Loaded services file OK. Server role: ROLE_STANDALONE Press enter to see a dump of your service definitions [global] workgroup = UBUNTU server string = %h server (Samba, Ubuntu) encrypt passwords = No map to guest = Bad User obey pam restrictions = Yes pam password change = Yes passwd program = /usr/bin/passwd %u passwd chat = Enter\snew\s\spassword:* %n\n Retype\snew\s\spassword:* %n\n password\supdated\ssuccessfully . username map = /etc/samba/smbusers unix password sync = Yes syslog = 0 log file = /var/log/samba/log.%m max log size = 1000 name resolve order = bcast host dns proxy = No usershare allow guests = Yes panic action = /usr/share/samba/panic-action %d idmap config * : backend = tdb [printers] comment = All Printers path = /var/spool/samba create mask = 0700 printable = Yes print ok = Yes browseable = No [print$] comment = Printer Drivers path = /var/lib/samba/printers smbclient -L 192.168.1.108 Enter shared's password: Connection to 192.168.1.108 failed (Error NT_STATUS_HOST_UNREACHABLE)

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  • Junior admin - how to discover/map the network to increase understanding?

    - by Dave
    I am a junior admin and have been tasked with gaining an understanding of the network. The 2nd line team are somewhat condescending so I'd rather not ask them. I know and use some of the servers on the network, so am able to tracert/ping them to see the names/addresses of equipment there are along the way, and gradually build a map, but how do I put the feelers out to find out what's out there if I don't know the names of server etc?

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  • What is a good way to pause a preseed network installation temporarily?

    - by user183394
    I have been learning how to do PXE network install of Ubuntu 12.10 64bit. I would like to have a way to pause the installation at a certain point temporarily. This way, I can for example figure out why a particular preseed d-i statement is not working with Alt-F4, or test out a particular statement in busybox with Alt-F2. I do know that I can leave out the answer to an essential question, e.g. defining language but without country would trigger the debian-installer to prompt me for such info. But I am looking for more fine grained control of pausing. Is it possible?

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  • Network drives don't get mapped and desktop redirection stops working when domain user becomes a member of the Local Administrator group on their PC

    - by Kim Jong-Un
    We have a Small Business Server 2003 domain controller with Windows 7 workstations joined to the domain. I noticed recently that, if I make a user a local administrator on his computer, his redirected desktop and mapped network drives do not connect at login (error on login that network drives inaccessible and desktop is blank). However, it is still possible for this user to browse to his home directory where his redirected folders are located- so he still has access to that location. Does anyone have any theories as to what is going on here?

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  • How do I get details about how Network and Sharing Center detected a problem?

    - by Matthew Scouten
    When I open Network and Sharing Center in Windows 7, it puts a red X between the network and the internet, but when I run Troubleshoot Problems it tells me that it does not know what the problem is. Is there any way to tell what test Windows used to place that red X, and how it failed? The system obviously knows something that it is not telling me. Knowing the details would help me solve this problem.

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  • How to make Linux to re-detect network interfaces?

    - by ablmf
    For some reason, ifcfg-eth* under /etc/sysconfig/network-script were deleted. Is there any tools that could detect network interfaces and re-generate these files? Another question : If I manually added ifcfg-eth0, is there any method to make it work without reboot? I tried "/etc/init.d/networking restart", and it doesn't work.

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  • What software is responsible for connecting to the wireless net specified in /etc/network/interfaces?

    - by zuba
    I'm curious what software (package, utility in bin's) handle interface parameters in /etc/network/interfaces and decides to connect to the specified wireless net. I use wifi usb stick dlink DWL-110 attached to wlan0 with ndiswrapper driver. Sometimes wlan0 sees my wifi net - iwlist wlan0 scan shows it, but does not connect to it - iwconfig shows AP Not-Associated, until I replug the stick. Neither reinserting module with ndiswrapper, not ifdown/ifup or restarting networking helps. That is why I need to know what OS entity handles connection/reconnection to wireless net. EDIT: shame on me, I use wireless-tool package with wep encryption

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  • How can an application (like Firefox) be forced to use a certain network interface?

    - by Lekensteyn
    I've two interfaces: eth0 and wlan0 on a notebook. Possible use cases: eth0 grants me Internet access, and wlan0 is currently connected to a router which does not have Internet-connectivity. For development purposes, I need to connect to the wlan0 by default, but use eth0 for surfing eth0 and wlan0 are both connected to the Internet. For a torrent application, eth0 should be used for speed, but for portability of the notebook, SSH should have a connection over wlan0 eth0 is a wire connection, wlan0 is a wireless one. Sensible data should be transferred over eth0, but other traffic can go over wlan0 as well. Is there a way to force applications (like nc.traditional or firefox) to use a certain network interface? A wrapper like example-wrapper eth0 program is fine too if such program exist. It would be nice if it could configured within Firefox (in runtime). I'd like to avoid IPTables solutions if possible.

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  • How many megabytes per second may I expect from a gigabit USB 2.0 network card under linux?

    - by Nakedible
    I'm interested in the actual real-word throughput attainable with an external 1000BaseT USB 2.0 network card under Linux. I have been able to attain 90 megabytes per second on a PCI-E interface, but the USB 2.0 bus has a theoretical limit of 480Mbit/s, and in practice less than 40 megabytes per second. Is the actual throughput attainable with such a card under linux 40, 30, 20, or even as low as 10 megabytes per second, eg. no better than a normal 100BaseT network card?

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