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  • Firewall for internal networks

    - by Cylindric
    I have a virtualised infrastructure here, with separated networks (some physically, some just by VLAN) for iSCSI traffic, VMware management traffic, production traffic, etc. The recommendations are of course to not allow access from the LAN to the iSCSI network for example, for obvious security and performance reasons, and same between DMZ/LAN, etc. The problem I have is that in reality, some services do need access across the networks from time to time: System monitoring server needs to see the ESX hosts and the SAN for SNMP VSphere guest console access needs direct access to the ESX host the VM is running on VMware Converter wants access to the ESX host the VM will be created on The SAN email notification system wants access to our mail server Rather than wildly opening up the entire network, I'd like to place a firewall spanning these networks, so I can allow just the access required For example: SAN SMTP Server for email Management SAN for monitoring via SNMP Management ESX for monitoring via SNMP Target Server ESX for VMConverter Can someone recommend a free firewall that will allow this kind of thing without too much low-level tinkering of config files? I've used products such as IPcop before, and it seems to be possible to achieve this using that product if I re-purpose their ideas of "WAN", "WLAN" (the red/green/orange/blue interfaces), but was wondering if there were any other accepted products for this sort of thing. Thanks.

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  • Cannot access system after deleting passwd file

    - by joao rodrigo leao
    I was trying to change my user name and also my /home/username and my system started to crash. I deleted the passwd file but I had a backup named passwd_bkp. I tried to rename this passwd_bkp as passwd and it did not work. No commands were being executed... I was in a terminal window. I re-started my system and now I cannot login. The GRub loads two options: Linux and recovery mode. I tried to open a sessions as root but it says the file system is corrupted. I cannot access my files. Did I lose all my files?

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  • permanent NAS-mount in Ubuntu - wrong fs type, bad option, bad superblock

    - by Emil
    My network drive shows up in the file browser, just like my external usb-harddrive. Moving, running and editing files works. Hovering over it shows smb://lacie-2big/nasdisk . BUT, when I want to save a file, the drive doesn't come up as an option. All I can see is my other places, including my usb-harddrive. I am a complete newbie but I am GUESSING that it has something to do with the mount not being a "real" mount but just a shortcut to the smb location. So I ran the tutorial at https://wiki.ubuntu.com/MountWindowsSharesPermanently about how to "mount a network drive permanently". edited my fstab to //LaCie-2big/nasdisk /media/nasmount cifs guest,uid=1000,iocharset=utf8,codepage=unicode,unicode 0 0 and running sudo mount -a gave me the following error: mount: wrong fs type, bad option, bad superblock on //LaCie-2big/nasdisk, missing codepage or helper program, or other error (for several filesystems (e.g. nfs, cifs) you might need a /sbin/mount. helper program) In some cases useful info is found in syslog - try dmesg | tail or so Now thats a very helpful error message, BUT, before I go any further, I'd be really thankful if one of you could tell me if I'm even in the right ballpark, or if my actual need: to be able to download files (ie torrents) directly to the drive, can be possible as it is already. Question: How to fix "wrong fs type, bad option, bad superblock on //LaCie-2big/nasdisk, missing codepage or helper program" when running mount -a

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  • Intel NUC Video Blur

    - by donopj2
    I recently purchased the D34010WYKH NUC and I figured this would be a great time to make the jump to a Linux based system. I'm running Ubuntu 14.04, and I'm having an issue with video rendering that is driving me mad. Essentially videos (all 1080p mkv files) appear to be slowly blurring, and its most noticeable when the camera remains on a scene for a long period of time. Then all of a sudden the video will correct the blur and the image will be sharp, only to begin happening again followed by more sudden and noticeable corrections. I have seen the exact same issue in both VLC and XBMC and across several different videos. I have installed the latest Intel graphics drivers, and searched the web but to be honest I'm not sure how to accurately describe this problem. I'm also quite new to the OS, so my experience tinkering is limited. Has anyone experienced this type of issue before? Can it be resolved?

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  • Need Help Changing Owner of External HArd Drive

    - by Thomas Ballew
    My understanding of code is about zero. I can open a terminal window, and type commands that are given to me, but that's about it. If someone can help me with this question, and explain at a level I'm likely to understand, thanks. If not, thanks anyway. I have an external hard drive with two partitions. I bought this drive when my operating system was Apple, 10.5 or so, and it was formatted as HFS+ with that system. Now, connecting the HD to my Linux system, I can read files, but I have about 1.5 TB of space that I can't use, because I am not the owner of the file, so can't write to the HD. Short of reformatting the HD, is there a way for me to set the permissions for the HD so I can write to it? Again, thank you.

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  • VirtualBox Share permissions

    - by Eduardo Oliveira
    at the moment i'm running ubuntu server 12.04 on top of a virtual box running as service in M$ w7x64, I've configured the shares on fstab with E /media/E vboxsf auto,rw,uid=1000,gid=1000 0 0 the mount is ok drwxrwxrwx 1 knoker knoker 16384 Sep 1 20:02 E but i cant change the permissions inside of /media/E ,chmod runs but doesn't do nothing. on a specific case /media/E/Docs/Downloads i have dr-xr-xr-x 1 knoker knoker 163840 Sep 1 19:30 Downloads and since i cant seem to be able to change from linux i tried it on the windows, and all users listed have full control... Any ideas on what is happening? Best Regards, Knoker

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  • How can I put Fedora GUI onto Ubuntu?

    - by Dareleth
    Okay, I'm pretty new to Linux-based systems, so if I say something wrong or ask something dumb, please bear with me. I have a project for school that requires some extensive work inside of the latest version of Fedora including screenshots of rather specific things. The VM system at my school runs Fedora 20 like a snail high on paint fumes, and my laptop's VirtualBox doesn't recognize the ISO I got from the official Fedora site, so I feel like I'm out of alternatives aside from formatting over Ubuntu. I'd rather not do that, as I rather enjoy this distro. I am running Ubuntu 14.04 on my laptop. At my login screen, I have the much appreciated option of selecting between a couple of GUI's--specifically, Ubuntu, GNOME, and Cinnamon. I would like to get the Fedora GUI added to this list, but I don't know where to start or if it's even an option. Any and all help is appreciated.

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  • Pls help Installation has ruined laptop

    - by user287694
    Hi this was my time using Linux. So I installed Ubuntu from Windows 7 via USB. After booting into Ubuntu I proceeded to do a full install over windows. This seemed to be going fine but at the point where I was to sign up to Ubuntu one it froze. After awhile maybe 30 mins I realised nothing was going to happen, so I restarted. Now after the bios options bit passes all I get is a prompt flashing at the top left of a black screen. I have tried booting up via USB option but nothing happens, I have tried this 6 or 7 times with fresh usb each time and also with lubuntu. I'm not sure if I have correctly made a live usb obviously I believe I have been but being new I can't guarantee this. Can anyone help me get some functional out of my laptop. Thanks Ben

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  • Week in Geek: New Security Hole Found Just Hours After Latest Java Update Released

    - by Asian Angel
    Our first edition of WIG for September is filled with news link coverage on topics such as Firefox 16 Beta introduces new command line feature for developers, Google to restore passwords lost using Chrome iOS app, new password stealing malware is targeting Linux & Mac OS X users, and more. Special Note: The title refers to the latest security update of Java just released this past Thursday. Please refer to our article on disabling Java here. Skull and crosshair targeting scope clipart courtesy of Clker.com. HTG Explains: How Windows Uses The Task Scheduler for System Tasks HTG Explains: Why Do Hard Drives Show the Wrong Capacity in Windows? Java is Insecure and Awful, It’s Time to Disable It, and Here’s How

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  • What is the best drink to drink when you have read nonsense questions on programmers?

    - by stefan
    I am having a hard time deciding what drink to drink after I have read a nonsense question on programmers.stackexchange. It's either Beer och Whisky; The beer is nice since you can down it some what relaxed but some times I feel the need for something "stronger" because the question is so utterly nonsense and stupid. Every time I have read a stupid / nonsense question on programmers.stackexchange.com I've questioned myself why I didnt write some code instead. I couldve probably written countless lines of codes, together probably building a new Facebook or Linux by now. But instead I sacrificed my precious time reading questions that shouldn't have been posted on the internet. It really makes me frustrating, I guess that is why I am so often considering the whisky part instead of beer. Since beer will maybe not calm me down enough and then I have to take the whisky too, together it's a) slightly more expensive and b) more time consuming. So, what is the best drink?

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  • Eight Geektacular Christmas Projects for Your Day Off

    - by Jason Fitzpatrick
    It’s Christmas Eve and if you’re lucky you’ve got some time off ahead of you. Let’s put that time to good use with some holiday-centered geeking out. Come on in for LEGO ornaments, Darth Vader snow flakes, and Christmas light hacks galore. Latest Features How-To Geek ETC How to Use the Avira Rescue CD to Clean Your Infected PC The Complete List of iPad Tips, Tricks, and Tutorials Is Your Desktop Printer More Expensive Than Printing Services? 20 OS X Keyboard Shortcuts You Might Not Know HTG Explains: Which Linux File System Should You Choose? HTG Explains: Why Does Photo Paper Improve Print Quality? An Alternate Star Wars Christmas Special [Video] Sunset in a Tropical Paradise Wallpaper Natural Wood Grain Icons for Your Desktop and App Launcher Docks My Blackberry Is Not Working! The Apple Too?! [Funny Video] Hidden Tracks Your Stolen Mac; Free Until End of January Why the Other Checkout Line Always Moves Faster

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  • What is the best free program to burn DVD movies from DVD movie files that are present on the hard drive the way ImgBurn does it in Windows?

    - by cipricus
    Evaluating burning programs is difficult: it takes more time, while errors are very unpleasant. I have looked at AcetoneISO, Brasero, and K3B (which many recommend) but they seem more limited than Nero, CDBurnXP and especially ImgBurn from Windows. They all seem to work (did not tested them fully myself) but at a more basic level (create ISO, burn them, etc.). When it comes to something like creating a DVD movie disk from DVD movie files present on the hard drive, it seems to me that I would have to create the ISO first and then burn it, which involves using more hard drive space and more time. Looking in the Windows direction, there is a Nero for Linux. It costs money. ImgBurn is said to work well in Wine, but as yet I have not tested it enough. What other options are there?

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  • The best Windows 7 virtual desktop tool by far&hellip; Dexpot

    - by Eric Nelson
    [Oh – and Windows XP, Vista etc] Every so often I yearn for the virtual desktop functionality that is implemented so well under Linux. Unfortunately every time I start looking for a great tool for Windows I ultimately end up disappointed. But … I think this time around I have actually found one that will outlast the first day or two and become a must have. Check out http://www.dexpot.de/ So far this is 100% stable, 100% sensible and offers awesome functionality, yet still is very simple to use. There is a detailed look at the many features on the site but a couple that do it for me: Desktop Manager and next/previous tray icons make it easy to navigate around: Announcement of Desktop as a desktop takes focus: And best of all, Windows 7 preview integration And… it is FREE for private use and you get 30 days to try it out for professional use (e.g. me)

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  • Live boot from hard disk problem

    - by user172277
    I've installed Ubuntu Desktop 13.04 32bit. Next I configured /etc/grub.d/40_custom to boot live system from ubuntu.iso (also Desktop 13.04 32 bit) I used configuration: menuentry "Ubuntu 13.04 Desktop" { loopback loop /boot/ubuntu.iso linux (loop)/casper/vmlinuz.efi boot=casper iso-scan/filename=/boot/ubuntu.iso noeject noprompt splash -- initrd (loop)/casper/initrd.lz } and it works OK. Later I made some changes on my installed ubuntu. I made some configuration, installed additional packages and so on. After that I made backup using remastersys tool. Remastersys gave me new ISO file. So I wanted to use it. And here was first problem. Remastersys creates only initrd.gz file. So I changed the grub configuration form: initrd (loop)/casper/initrd.lz to: initrd (loop)/casper/initrd.gz But after that, when I reboot my system I get error: /init: line 3: can't open /dev/sr0: No medium found Any ideas how to fix it? Best Regards, Bartosz

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  • restoring grub when Windows 7 MBR lost it

    - by Trent Hall
    My dual boot desktop was running only Windows 7 until it crashed on a windows update. Couldn't get it started again even after all the usual things that might fix it, so I installed Ubuntu 12.04, which has worked very well. unfortunately Carbonite doesn't run on Linux yet, and so I called Microsoft support to see if we could be Windows 7 up and running. Their attempts to get Windows 7 running resulted in writing a new MBR for windows, which failed and also somehow caused the loss of ability to boot into Ubuntu also. How can I get back to Ubuntu? I don't want to lose my settings in Ubuntu. Thanks... Trent

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  • Code Monster Helps Introduce Kids (and Curious Adults) to the Basics of Programming

    - by Jason Fitzpatrick
    If you’re looking for a fun way to introduce a kid to programming (or sate your own curiosity), Crunchzilla’s Code Monster is a real-time introduction to basic programming concepts. How does Code Monster work? Users are guided through the programming experience (using JavaScript) by a talkative blue monster that asks questions about the code and suggests courses of action. Play long enough and you travel from simple variables to more complex ideas like conditionals, expressions, and more. It’s not a comprehensive programming curriculum (nor does it claim to be) but it’s a great way to introduce people of all ages to programming. Hit up the link below to take it for a spin. Code Monster [via O'Reilly Radar] 8 Deadly Commands You Should Never Run on Linux 14 Special Google Searches That Show Instant Answers How To Create a Customized Windows 7 Installation Disc With Integrated Updates

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  • Barnes & Noble Slashes Lighted Nook Price to a Kindle-Competitive $119

    - by Jason Fitzpatrick
    In a bit of market battling that benefits everyone, Barnes & Noble has slashed the price of the Nook Simple Touch with Glowlight–their closest match to the Kindle Paperwhite–to $119. The new listing, in addition to showing off the lowered price, includes a not-so-subtle jab against the Kindle: “No Ads. Power adapter included.” While the Glowlight is a great little ebook reader, Barnes & Noble is on the defensive after a week of hands-on-hardware reviews of the Kindle Paperwhite left many reviewers proclaiming it king of the e-readers and heaping on mountains of praise. Hit up the link below to read more about the Nook Simple Touch with Glowlight Nook Simple Touch with Glowlight Now $119 8 Deadly Commands You Should Never Run on Linux 14 Special Google Searches That Show Instant Answers How To Create a Customized Windows 7 Installation Disc With Integrated Updates

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  • How to configure an Ubuntu server so that all traffic goes through a VPN?

    - by Di Wu
    This question is Not about how to set up VPN on an Ubuntu server. Edited: I think what I'm looking for is the way to set up a PPTP VPN client on my Ubuntu server by command line. I have an Ubuntu server running and connected to the internet. I also have a VPN service (PPTP) running on another Linux machine. Now all I want to do is configure this Ubuntu server so that all the internet traffic it generates goes through the VPN. How can I achieve this?

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  • Slow DNS Resolution

    - by user4541
    After a clean install of 10.10 I'm finding DNS resolution takes quite a long time. Hitting any url takes a good few seconds (10 - 30) before the site is displayed. I'm thinking this is a DNS resolution issue due to the 'waiting' or 'looking up' text being displayed in Firefox and Chrome. I do not get this issue with Slackware Linux or Windows 7 so it is not network or DNS server specific issue. It's something on the client side. Looking around on Google I see there are a few other people with this issue. The ones that have reported a workaround by switching to openDNS are disabling IPV6 or dealing with another issue. Any help would be appreciated. My network card is wired: Broadcom Corporation NetLink BCM5906M Fast Ethernet PCI Express Thanks

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  • Use MD5 to validate the exchanged files between Oracle and Customer

    - by Jie Chen
    Oracle Supports may ask customers to upload some data files (Database Dump, Trace Log, etc) for research. We often see the scenario that the uploaded huge files are corrupted and have to ask to re-upload. Then we may waste much time during this period. To avoid this, customers can tell Support the MD5 checksum of the upload files, requesting support to validate same if they have gotten the correct file in good format. MD5 on Linux We can use "md5sum" command directly. For example we calculate the file PrintManager.class MD5 checksum value. [jijichen@jclinux temp]$ md5sum PrintManager.class e0bf8c7623240ccd15ee17c0478427a1 PrintManager.class MD5 on Windows There are many freeware to calculate MD5 on internet. For example we can use WinMD5Free tool. You can download it from here. http://www.winmd5.com https://blogs.oracle.com/jiechen/resource/2013/winmd5free.zip

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  • How to improve wireless network speed?

    - by Toby
    I am running 10.04 LTS on a desktop PC with a Belkin G-Plus MIMO Wireless network card. Ever since running Ubuntu on the machine I have noticed fairly slow network speeds (about half the speed I get when running the same card through Windows) I did some research I found out that by and large wireless network cards aren't that well supported on most Linux distros. I was wondering though if there is anything I could be tweaking on the system that could help squeeze a little more out of the card? Here is some more information *-network:1 description: Wireless interface physical id: 2 logical name: wlan0 serial: 00:1c:df:24:5e:54 capabilities: ethernet physical wireless configuration: broadcast=yes ip=192.168.1.5 multicast=yes wireless=IEEE 802.11bg

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  • Mobile Internet Modem Olivetti Olicard 155 does not work in Ubuntu 12.10

    - by João Fracassi
    I have a problem, I bought a 3G mobile modem, but does not work in Ubuntu 12.10, also did not work on Ubuntu 12.04. I installed the USB Modeswitch and has the same flaw, does not recognize the modem within the connection manager, I connect the modem to the USB port and wait up to 20 minutes and does not recognize the modem. I ran the command recognizes the modem and lsusb as "Bus 001 Device 007: ID 0b3c: C004 Olivetti TechCenter." Does anyone have this modem, you can help me solve the problem, or does anyone have a solution? Because the manufacturer does not support Linux and according to some forums usbmodeswitch supports esste model. Olivetti Olicard modem 155.

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  • Ubuntu cannot boot after kernel upgrade

    - by andrey
    Today I have upgraded the Linux kernel (using the Update Manager), from 3.0.0.16-generic to 3.0.0.17-generic. However, after this update, Ubuntu 11.10 cannot boot anymore. I see a strange message which says "initclt: event failed". And if I press [Ctrl]+[Alt]+[F1] it still allows me to log into the text mode. But if I type sudo lightdm, I cannot log into the graphical mode. However, if I choose to boot an older kernel from the GRUB, Ubuntu boots correctly. What should I do, in order to be able to boot the system using the new kernel?

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  • How to update coffee script?

    - by Tetsu
    I got a following error when I tried to watch coffee scripts by coffee -o js -cw coffee. /usr/local/lib/node_modules/coffee-script/lib/coffee-script/command.js:321 throw e; ^ Error: watch Unknown system errno 28 at errnoException (fs.js:636:11) at FSWatcher.start (fs.js:663:11) at Object.watch (fs.js:691:11) at /usr/local/lib/node_modules/coffee-script/lib/coffee-script/command.js:287:27 at Object.oncomplete (/usr/local/lib/node_modules/coffee-script/lib/coffee-script/command.js:100:11) I have no idea what is going with error. Then I checked the versions, coffee -v is 1.6.1 and node -v is v0.6.12. According the official site( http://coffeescript.org/ ) the latest version is 1.6.3, so I wanted update coffee by npm update -g coffee-script, but this fails also. npm WARN [email protected] package.json: bugs['name'] should probably be bugs['url'] npm http GET https://registry.npmjs.org/coffee-script npm http 304 https://registry.npmjs.org/coffee-script How can I update coffee script? Edit 2013/10/11 In my coffee script directory there is only one file box_wrapper.coffee. $ -> $("body").children().wrap -> "<div id='#{$(@).attr "id"}_box' class='wrapper'/>" Edit 2013/10/16 I tried to re-install coffee, so I've done like this. $ sudo npm -g rm coffee npm WARN Not installed in /usr/local/lib/node_modules coffee $ coffee -v CoffeeScript version 1.6.1 I can't remove coffee. And I tried also like this. $ sudo apt-get remove npm $ npm -v -bash: /usr/bin/npm: No such file or directory $ sudo apt-get install npm $ npm -v 1.1.4 $ sudo npm -g install coffee # I omit a lot of `GET` parts. npm http 304 https://registry.npmjs.org/mkdirp/0.3.4 npm ERR! error installing [email protected] npm http 304 https://registry.npmjs.org/assertion-error/1.0.0 npm http 304 https://registry.npmjs.org/growl npm http 304 https://registry.npmjs.org/jade/0.26.3 npm http 304 https://registry.npmjs.org/diff/1.0.2 npm http 304 https://registry.npmjs.org/mkdirp/0.3.5 npm http 304 https://registry.npmjs.org/glob/3.2.1 npm http 304 https://registry.npmjs.org/ms/0.3.0 npm ERR! error rolling back [email protected] Error: UNKNOWN, unknown error '/usr/local/lib/node_modules/coffee/node_modules/express' npm ERR! error installing [email protected] npm ERR! EEXIST, file already exists '/usr/local/lib/node_modules/coffee/node_modules/mocha/node_modules' npm ERR! File exists: /usr/local/lib/node_modules/coffee/node_modules/mocha/node_modules npm ERR! Move it away, and try again. npm ERR! npm ERR! System Linux 3.2.0-54-generic-pae npm ERR! command "node" "/usr/bin/npm" "-g" "install" "coffee" npm ERR! cwd /home/ironsand npm ERR! node -v v0.6.12 npm ERR! npm -v 1.1.4 npm ERR! path /usr/local/lib/node_modules/coffee/node_modules/mocha/node_modules npm ERR! fstream_path /usr/local/lib/node_modules/coffee/node_modules/mocha/node_modules/___debug.npm npm ERR! fstream_type Directory npm ERR! fstream_class DirWriter npm ERR! code EEXIST npm ERR! message EEXIST, file already exists '/usr/local/lib/node_modules/coffee/node_modules/mocha/node_modules' npm ERR! errno {} npm ERR! fstream_stack /usr/lib/nodejs/fstream/lib/writer.js:161:23 npm ERR! fstream_stack Object.oncomplete (/usr/lib/nodejs/mkdirp.js:34:53) npm ERR! EEXIST, file already exists '/usr/local/lib/node_modules/coffee/node_modules/mocha/node_modules' npm ERR! File exists: /usr/local/lib/node_modules/coffee/node_modules/mocha/node_modules npm ERR! Move it away, and try again. npm ERR! npm ERR! System Linux 3.2.0-54-generic-pae npm ERR! command "node" "/usr/bin/npm" "-g" "install" "coffee" npm ERR! cwd /home/ironsand npm ERR! node -v v0.6.12 npm ERR! npm -v 1.1.4 npm ERR! path /usr/local/lib/node_modules/coffee/node_modules/mocha/node_modules npm ERR! fstream_path /usr/local/lib/node_modules/coffee/node_modules/mocha/node_modules/___debug.npm npm ERR! fstream_type Directory npm ERR! fstream_class DirWriter npm ERR! code EEXIST npm ERR! message EEXIST, file already exists '/usr/local/lib/node_modules/coffee/node_modules/mocha/node_modules' npm ERR! errno {} npm ERR! fstream_stack /usr/lib/nodejs/fstream/lib/writer.js:161:23 npm ERR! fstream_stack Object.oncomplete (/usr/lib/nodejs/mkdirp.js:34:53) npm ERR! npm ERR! Additional logging details can be found in: npm ERR! /home/ironsand/npm-debug.log npm not ok And npm-debug.log is a blank file.

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  • Help identifying device and driver for 0bda:1724

    - by user104547
    I've got a new Lenovo Ideapad Yoga 13. The onboard lan/bluetooth device is identified in Linux as 0bda:1724 (via lsusb). No network peripherals are reported from lspci. From the interwebs, the vendor:product above looks to be RT2573, however, in Windows, the device is identified as RTL8723A. Unfortunately, I have followed both roads, trying rt2500usb, rt2x00usb, and rtl8723e. I have emailed Realtek asking them for help but so far my email has fallen on deaf ears. I've posted the output of lspci -nn -v and lsusb -v to: http://pastebin.com/dqvTSVjF Any help at all would be appreciated. Thank you, Ryan

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