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  • Separating two networks

    - by Farhan Ali
    I have two routers, R1 and R2. R1 (a stock linksys router running dd-wrt) is connected to internet and is serving internet to a network of 5 devices/PCs running a DHCP server, with a network of 192.168.1.0/24. R1 also serves internet services to R2. R2 (a ubuntu server 12.04) gets internet from R1. R2 has 3 PCs attached to it, runs a DHCP server with a network of 172.22.22.0/24. My requirement is that the clients on both sides should not talk to each other at all – with the exception that R1 clients may access the R2 router through its IP of 192.168.1.x. At the moment, R2 clients are able to ping R1 clients, which is unacceptable, whereas R1 clients cannot ping R2 clients, which is OK. I believe iptables could be set up but I don't know how.

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  • After update to Windows 8.1 brigthness isn't working (changing)

    - by Bibo
    I just update my Windows 8 to Windows 8.1 by Windows Store and I have some problems. My notebook is Acer Aspire Timelinex 3820TG and I know it's little old for Windows 8 but I install them and works fine (I updated my HDD to SSD). Now I just updated Windows and I have problem with changing brightness on my dedicated graphic card (Ati HD 5650). First I can changing brigthness with fn + keys but It just changing level in OS. No change in real. I tried reinstall drivers, install drivers for my card from Acer with compatibility to Windows 7 and without change. When I switch to integrated card changing brightness works. I think the problem is with drivers but I don't know how to get it working. Thanks for help Bonus question: I have another problem (but this one is not so important). Does anyone knows what msietxghh.exe is doing? Everytime when my system runs (after update) I get message that this program stops working but I just cancel and looks everything works fine.

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  • EloTouch touchscreen suspends correctly but does not come out of standby on Ubuntu 10.04

    - by Ton van den Heuvel
    I am using an EloTouch touchscreen on a minimal Ubuntu 10.04 installation. I have a bare Xserver running without any desktop environment, just an xterm. The touchscreen is working great, but there is still one small problem. As soon as the touchscreen goes to standby, it is not coming out of standby when touching the screen. Using a keyboard or mouse does get it out of standby though. I am looking for any hints or directions to a cause of this problem. Is this an x.org configuration problem? A driver problem? Is this a known problem with touchscreens in general? Any pointers are welcome. The driver I am using is an unreleased EloTouch driver (3.5.0). I received it through a reseller who can not give me any technical information unfortunately.

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  • Volume keys not working after installing Silverlight

    - by terry
    I downloaded Silverlight for Safari to use Netflix. This download has caused my MacBook's volume keys to become non-functional, although I can still change volume through the icon in the menu bar or through system preferences. When I press the keys to change the volume, the transparent volume icon appears on the screen with a circle-slash icon at bottom center. Does anyone know how to make the keys functional again? I deleted Silverlight but still no sound.

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  • How do I keep my Mac from constantly going to sleep?

    - by David
    The system is a PowerPC Mac Mini running MacOS Tiger 10.4.11. When I login (I'm the admin), everything seems fine - until about 10-15 minutes later. Then the system goes into sleep mode. Each time I try to wake the system up - I can barely log in before it goes to sleep again. Sometimes I don't have enough time to enter my password (from the screen saver). If I shut down and restart, then I have that 10-15 mins again - until it again goes to sleep. I checked the settings in the Displays and Energy System Prefs. I looked at Accounts and at Screen Saver System Prefs; no times seemed to be present. I've already reset the PROM and other things (as part of an earlier problem shooting session). If I don't log in at the desktop, things seem to be fine. Nothing in .profile, /etc/profile, or /etc/bashrc seems to stand out. Right now, the system is hardly usable; can someone help? Many thanks...

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  • Add panel to secondary monitor on Ubuntu 10.4

    - by Mr. Man
    I am running Ubuntu 10.4 Lucid Lynx and I was wondering if it is possible to put a panel on a secondary monitor. Here are methods I have tried which did not work: Click and drag the panel from the primary monitor to the secondary monitor Installing TwinView (couldn't find it) Thanks in advance!

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  • Installing Midnight Commander from sources (no root privileges)

    - by ouroboros
    I tried to configure ./configure --prefix=/localfolder glib-2.26.1/ make make install but it fails at make stage. trying to configure mc-4.6.1/ and make doesn't obviously work. What are the steps I need to make in order to install midnight comander for my local user in a custom folder? Make for glib gives me these errors /usr/bin/msgfmt: found 2 fatal errors cp: cannot stat `test.mo': No such file or directory gmake[4]: *** [test.mo] Error 1 gmake[4]: Leaving directory `/remote/folder/mc/glib-2.26.1/gio/tests' gmake[3]: *** [all-recursive] Error 1 gmake[3]: Leaving directory `/remote/folder/mc/glib-2.26.1/gio' gmake[2]: *** [all] Error 2 gmake[2]: Leaving directory `/remote/folder/mc/glib-2.26.1/gio' gmake[1]: *** [all-recursive] Error 1 gmake[1]: Leaving directory `/remote/folder/mc/glib-2.26.1' gmake: *** [all] Error 2

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  • Unix: softlinks, hardlinks

    - by sixtyfootersdude
    I am somewhat confused what the differences between a softlink, and a hardlink are (on unix). It seems like a softlink is the same as a shortcut in windows or an alias on Mac OS X. (Can someone confirm this?) Softlinks can link to both directories and files. I am uncertain of what a hardlink does or if it is useful.. Is it better to use one instead of the other? Thanks.

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  • How to set up port forwarding and firewall settings for torrents using Transmsission on Mac OSX 10.5

    - by Liz
    I have picked up bits of advice here and there on the internet and got someway through this tortuous exercise (after it took 18 hours to download the first torrent I tried yesterday - magnet-link for a film). Where I have got stuck is with configuring the firewall on the Netgear Router but I am not sure if I have caused the problem myself by something else I have done configuring the Mac System Preferences for Security or Networking. I have been following the sections of these instructions that seem to apply, although they are written for a different OSX version (don't know which one, but the screen shots do not match what I see) and I am not wanting to set up my Mac as a server and attending to the parts that apply to port forwarding for Netgear rather than LinkSys: http://homepage.mac.com/car1son/static_port_fwd_intro.html I have been trying to follow these instructions: Instructions for DG834, DG834G, DG824M, FR114W, FM114P, FR114P, FR328S, FVL328, FVS328, FVS338, FVX538, FWAG114, FWG114P, or FVS318v3 These routers do port forwarding by assigning port numbers to a "service" associated with the application you want to run. "Rules" are set for particular services. Rules block or allow access, based on various conditions such as the time of day and the name of the service. To Create a New Inbound or Outbound Rule 1. Submit the router's address in an Internet browser. (The default is 192.168.0.1). 2. Enter the router's username and password. 3. From the main menu, click Security > Rules. 4. Click Add for inbound or outbound traffic, as appropriate to the application you are planning to run. 5. Select the Service. The services the router knows about are listed in the drop down. If the service you want is not listed, add it as described in the next section. 6. Select the Action, for example ALLOW always. 7. For Send to LAN Server, enter the IP address of the local server. Note that this is also the IP address the computers on your LAN will access. 8. For WAN User choose Any, or limit access to particular IP addresses. 9. For Log selection it is reasonable to turn logs on, especially at the beginning when you are unsure of the result of the changes you are making. Later, you may want to set logs to "Never" for performance reasons. 10. Click Apply. As noted in user manual for some models: * Consider using the Dynamic DNS feature on the Advanced menu, so that external users can find your network when the DHCP lease is renewed by your ISP. * If your own LAN server uses DHCP, and your IPs change on rebooting, consider using the Reserved IP Address feature in the LAN IP menu. To Add a Service for These Routers 1. Click Security > Services > Add Custom Service. 2. Enter any name you choose for the service. 3. Select whether the service is to use TCP or UDP. If you are unsure, select both. 4. Enter the lowest port number used by the service. 5. Enter the highest port number used. If the service uses only one port number, enter the same number. 6. Click Apply. There is no "Security - Rules" submenu in the Netgear page, so I have been trying to access "Security - Firewall Rules". I can access everthing else in the Netgear settings as Admin but I cannot get the "Firewall Rules" section to open up. (I am not 100% sure I will know exactly what to do if and when I do get it opened up!) I haven't managed to find though searching the internet any instructions that would seem to apply specifically to what I am trying to achieve, so would be very grateful if someone could either point me in the right direction or give me some advice directly. Best wishes, Liz

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  • How do I backup Firefox add-on like "Fastdial" addon for a reinstall?

    - by danacon
    I am doing a new install of Firefox and over the years my Windows "roaming folder" I use for backup has gotten all clogged up from so many add-ons and crap... I want to backup just a couple Firefox add-on's, one is "Fast dial" How do I backup this add-on and its addresses for when I reinstall Firefox and the add-on, so It will go back to where it is now? Most add-on's have a backup feature like "too many tabs" bookmarks and such but fast dial doesn't? so How do I backup this add-on? and /or addons like it without a backup feature? Thanks in advance any help or options would be a big help. Dana

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  • Why does Windows spooler require an administrator account?

    - by Software Monkey
    Does anyone know what changes I might need to make to allow restricted users to print using a printer configured for spooling? My Windows XP SP3 system currently requires me to use an Admin account for printing if the printer is configured to spool documents before printing. If the printer is configured for direct printing it works for all accounts. This used to work and some months back it just stopped, and I can't pin down why. The printer, which is an HP PSC 1200 (an old printer) itself is configured for Everyone to have Print authority and my specific (restricted) account to have Full authority, that is Print, Manage Printers and Manager Documents. My HDD is locked down for restricted users given them only read authority to the entire file system except their data directories, which is how I have run my systems for years. I assume there may be a directory somewhere that I need to allow users to write to.

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  • Creating a torrent from a command line application (Windows)

    - by John
    Does anyone know of a application that allows you to create torrent files via the command-line in Windows? Update: I need a command-line version because I'm a programmer. I need to create the torrent programmatically, I can't have a window pop-up. There's a ton of uses for command-line torrent creation and I think it's very strange that I havent found a command line version from my hours of searching the Internet.

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  • Ways to use ClamWin Antivirus

    - by Charles Gargent
    I dont use on On Access AV scanner, I just use Clamwin. My download manager invokes a scan on any files I download, and I dont share files. Apart from scheduling a system scan every week (seems an awful waste of resources) what other ways can I use Clamwin to keep your PC virus free. Ideas such as: scan files in open folders, adaptive batch scripts that scan most frequently used folders / last used folders things like that

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  • How is a VM isolated from the physical host?

    - by dotnetdev
    Hi, I was thinking about virtualisation and how to explain it to a non-technical person and one of the things that I was wondering was how to explain the way that a VM is isolated and seperate from the phyiscal machine (so I can have a virus on a VM but this would never effect my physical host, right?). How does this technology work exactly? As I am a programmer, when I think of isolating processes, I think of using appdomains (I work with C# primarily). Thanks

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  • FreeBSD console broken?

    - by Kuroki Kaze
    It seems my FreeBSD console is misconfigured (i guess). I cannot use home button in command line, and in vi left arrow is switching me from edit to command mode, which makes editing a little difficult. How can I know what's wrong and fix it? I'm not a root, by the way, I just hope it's something with my profile configuration.

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  • Can I disable email alarms in iCal?

    - by Brock Boland
    I have iCal syncing with a Google Calendar account, and for some reason, some meeting invites that I accept wind up with an email alarm set for 10 minutes before the meeting. This causes iCal to send me an email through Mail.app at the appointed time. This is a pain in the neck, because Mail.app launches if it's not open (and since I use a different client, it never is), and if I'm offline, Mail.app starts throwing up error messages. And besides, I don't want meeting alarms in my inbox. Is there any way to completely disable email alarms in iCal? The only option I see is "Turn off all alarms" - but I don't want to turn off the pop-up windows, just the emails. I remove those alarms any time I come across them, but sometimes they slip through.

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  • What is this dm-0 device?

    - by Jeff Shattock
    While poking around trying to figure out why a Linux - Linux file transfer is running slower than I think it should, I stumbled across something I'm not familiar with. /dev/dm-0 seems to be my bottleneck, but I have no idea what it is. On my destination server, the iostat command shows a device at the bottom, /dev/dm-0, as being 100% utilized. This server has 6 disks in a mdadm raid5 set, with LVM running on top of it. Each of the underlying disks are sitting around 50% util. The transfer is writing to a logical volume located on this raidset. What is this /dev/dm-0 thing? Once I know what it is, maybe I can find how to increase its speed, or at least understand why its the speed that it is.

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  • What is the best file system and allocation size for a USB flash drive?

    - by e-t172
    I'm considering using my 4 GB Kingston DataTraveler USB stick to store my Firefox and Thunderbird profiles for my laptop and desktop PCs. I want to maximize performance when using Firefox. The question is: what is the best file system and allocation size for the fastest Firefox profile operation on a USB flash drive? I'm using Windows 7 on both machines and I don't care about compatibility or the drive's lifetime. I just want to maximize performance. I could even use ext2 with the Ext2 IFS driver if that means it'll be faster. I'm assuming (perhaps I'm wrong) that putting a Firefox profile on a USB stick would be a "lots of small files" usage. In that case, it seems that NTFS would perform best, but I'm not sure. Besides I found nothing regarding the best allocation size to use. Considering that the default allocation size is designed for hard drives (which have different characteristics), I'm assuming that the default allocation size is not the best.

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  • 4K sectors: Why are hard drives moving to 4096 byte sectors, vs. 512 byte sectors? Are 4K sectors a

    - by Chris W. Rea
    I've noticed that some Western Digital hard drives are now sporting 4K sectors, that is, the sectors are larger: 4096 bytes vs. the actual de facto standard of 512 bytes. So: What's the big deal with 4K sectors? Is it marketing hype, or a real advantage? Why should somebody building a new PC care, or not, about 4K sectors? Why is this transition taking place now? Why didn't it happen sooner? Are there things to look out for when buying a 4K sector hard drive? e.g. incompatibility? Anything else we should know about 4K sectors?

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  • Where to get grub files without using grub-install

    - by Jacky
    I am in a particular situation. I have a MacBook Pro with no internal CD drive and both MacOS X (minimal setup) and Linux (my main system) is installed. During a cross-upgrade to Ubuntu 12.04 I messed up grub, so that my /boot/grub directory is basically empty. This means I can't boot Linux on the laptop anymore but only get into grub rescue. Normally this is no issue as you'd just boot from a rescue CD or USB stick, but unfortunately with a MacBook Pro this is not possible (I have reFIT installed and it attempts to boot, but it fails and the manual says that Apple's EFI firmware is not able to handle this situation). From MacOS X, however, I still have write access to the Linux partition. I've now been trying to figure out how to populate the /boot/grub folder with the necessary files, to no avail so far. The ISO image of Ubuntu 12.04 contains an EFI folder which is not what I am looking for, instead I need the normal.mod files for the grub version of Ubuntu 12.04. I do not have any other machine to set up a virtual machine of Ubuntu 12.04 to extract this from after a grub-install, so I am asking for ideas here how to solve this mess. P.S.: I installed the Linux previously when I still had a working internal CD drive. This is gone now.

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  • Where can I learn various hacking techniques on the web?

    - by Carson Myers
    I would like to try my hand at hacking -- that is, exploiting various website vulnerabilities. Not for any illegal purpose mind you, but so I can have a better understanding and appreciation of these exploits while writing my own web software. I seem to recall that there was a community that hosted a bunch of demo websites, and you had to find and exploit certain vulnerabilities with each one. I can't remember what it is called but this is the sort of thing I am looking for -- I have read a tonne of little XSS and CSRF examples but have yet to find a real-life hands-on example of one. Does anyone know of such a place, where I can be given an example page and look for security holes? I would really rather not try this with actual websites, I don't want to break any laws.

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  • Gvim displays wrong font when set from _gvimrc, but correct font when set from menus

    - by dggoldst
    This question applies to gVim running on Windows. I have the following line in my _gvimrc set guifont=Lucida_Sans_Typewriter:h11:cANSI When gVim starts up, it strange italicizes everything! A call to :set guifont shows that things seem to have been set correctly, as it returns guifont=Lucida_Sans_Typewriter:h11:cANSI Then I manually select Edit-Select Font ... and then choose Lucida Sans Typewriter, and font size 11 and submit, the italics disappear and it looks fine. I've posted my _gvimrc for reference at http://vim.pastey.net/132157 So my questions are: Why am I getting different results from setting it manually and from _gvimrc? Is there a way to capture the command that the dialog box is sending back to the program? It might include extra commands that I'm missing.

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