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  • Is there a decent diagram of packet flow for a modern era (2.6+) iptables setup?

    - by stsquad
    I'm currently trying to debug a particularly hairy set of DNAT based iptables rules (the UDP reply never makes it back to the original requester) and I'm struggling to visualise the packet flow through all the numerous tables involved. So far Google'ing has shown me old 2.4 based ipchains ones. The netfilter site has some good text docs but is short on diagrams and a number of the external links are now dead. So is there a canonical diagram for iptables packet flow, preferably showing how NAT/Masqueraded packets are also dealt with?

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  • Remove item older than 2 weeks

    - by Simon
    I use emacs org-mode to manage work items. Every week, I manually remove all Done items older than 2 weeks. Is there an easy way to perform this automatically? EDIT: I am currently trying to add a new custom command like this: (setq org-agenda-custom-commands '(("P" "Show old entries" todo "DONE" ( (org-agenda-files '("c:/git/org/tickets.org")) (tags "CLOSED<=\"-2w\"") ) )) ) The filter on the CLOSED timestamp is not working correctly.

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  • Issues connecting VMWare VM to Windows 7 (host)

    - by MasterGberry
    I am on windows 7 trying to figure out why i cannot ping my computer or my VM from the other one, yet I am able to ping the router on both and other computers on the network. My desktop is running windows 7 64 bit and my vm is running CentOS 64 bit (which is what I use to test my web server stuff). At my school the VM has a dedicated IP and i don't have this issue, but I am home now and having issues trying to set this up behind my dumb router...I had already tried changing the VINC (i believe) to hide the vmnet1 and vmnet8 connections from the windows firewall and this seemed to have worked for like 5 minutes and then stopped... Any ideas? Thanks

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  • Is there a way to "lock" the viewport in vim?

    - by breadjesus
    I recently started using Vim with NERDTree. The annoying thing is when I close the buffer, NERDTree expands to fill the rest of the screen, and I have to open another file and reopen NERDTree to get it back to the old layout. Is there a way to "lock" NERDTree in place? Ideally, closing a buffer would replace it with another buffer that's hidden, or open a new blank buffer if no other buffers are open. Thanks!

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  • Sound has stopped working after upgrading to Windows 8

    - by Max
    I upgraded my (fairly new, about 2 months old) computer to Windows 8 last night, and now the sound has stopped working across the entire machine. I have checked using multiple programs (iTunes, YouTube, World of Warcraft, etc) and multiple output devices (speakers and headset), checked the soundcard drivers (Asus Xonar DG 5.1), checked the volume mixer to ensure I wasn't just having a brainfart and had the sound muted, but nothing's working. Does anyone have any advice on what could be causing this? Thanks Max

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  • How to disable password change for openldap user?

    - by Keve
    Considering possible solutions for some improvements I run into this theoretical question and I couldn't find a satisfying answer. Some of you may have first-hand experience with this in practice, so here the question goes: How can I disable password changing for an OpenLDAP user? The account must stay enabled, allowed to log on to workstations and work as usual, but should not be able to change its own password. Can this be done? If so, how difficult is it to implement it? All suggestions are appreciated! For reference: Servers and workstations are to run a mixture of FreeBSD and OpenBSD. Accounts to get password disabled are student or generic workstation accounts. Environment is a school.

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  • Can I change a user password in Linux from the command line with no interactivity?

    - by Paul Hoffman
    I have a specific use case where I would really like to be able to change a user's password with a single command with no interactivity. This is being done in a safe fashion (over SSH, and on a system with only one user able to be logged in), so it's fine to expose the new password (and even the old one, if necessary) on the command line. FWIW, it's a Ubuntu system. I just want to avoid having to add something Expect-like to this system for just this one task.

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  • Client unable to reach Internet through OpenVPN

    - by Carroarmato0
    The clients can all connect through OpenVPN. OpenVPN serves the following pool: server 10.8.0.0 255.255.255.0 I've configured the server's iptable with the following rule: iptables -t nat -A POSTROUTING -s 10.8.0.0/24 -o eth0 -j MASQUERADE and echo 1 /proc/sys/net/ipv4/ip_forward This used to work back on the old vps I used. Now I've migrated to a vps which has ipv6 connectivity. Is it possible that Ipv6 has something to do with the fact that the clients can't reach the internet?

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  • Windows 7 recreate my .exe/.dll files

    - by Anonymous
    hi, i have a few programs that check if file exist, and if its old version delete him and paste the new one. However under Windows 7 Professional i can't delete the file some System process is always restoring it (same with the dll files) and as you can imagine a lot of programs are crashing because of that behaviour. So WHAT SERVICE/PROCESS can lock/recreate/restore files? I have disabled System Recovery.

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  • Windows XP screen chopped off

    - by msindle
    One of the teachers at the school I support has a Dell Latitude E5500 and about 3/4 of the desktop shows just fine, but the right 1/4 shows whatever was on there last, like it's not refreshing (yes I tried refreshing the screen). For example if I open up Internet Explorer then minimize it the left 3/4 minimizes, but the right 1/4 stays pulled up. If I change the screen resolution to 800x600, it works perfectly fine. The sceen works together and has no problems. The only way I have found to get rid of this is to reload the laptop. How can I resolve this permanently?

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  • Recommended Free DNS hosting for my webserve on a dynamic IP? [closed]

    - by JSchwartz
    I have finished a webserver project (for school) and the professor wants to be able to "test it" from home whenever he is free - this means I need to provide his with the URL to my webserver (which is fine). The only issue is that my IP-Address is dynamic (changes almost everyday) and I would rather not have to email him everytime - nor do I want him to try when it isn't working ... So I was looking into alternative solutions like DNS hosting (I hope that is the right terminology), so I could provide something static for him to connect to ... problem is I have never done this before... Are there any recommeneded free ones? Does Google or someone provide something good? I found http://www.no-ip.com/ which seems like it does what I want... Any feedback would be appreciated. Thanks,

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  • Hard drive restore on reboot on windows embedded

    - by sav
    My company has an old out of service device with windows embedded on it that we want to re purpose. Any changes to the drive (SD Card with 2 partitions), (ie: installed software, ip address, system settings, files) are reset/deleted when we reboot the device. We can successfully make changes to the drive by plugging it into a PC, but that has its limitations and we would like to be able to use our device. Can anyone tell us more about the technology used for doing this and how/if we can disable it?

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  • What's the best way to install software in Ubuntu?

    - by the0ther
    I'm new to Ubuntu and have been away from Linux for a while. I'm used to Windows and find this tedious on Linux but I want to give it a shot. My tendency is to prefer GUI tools over command-line, and Ubuntu is a distro that seems to cater to usability. I note it is based somewhat on apt-get which I've heard good things about. What's the best practise for installing apps on Ubuntu? Should I prefer to try my options in this order? Synaptic Package Manger apt-get on the command line .tar.gz files (old school)

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  • Java on 256MB system?

    - by Mike S.
    For a school project, I've registered a free VPS on a hosting provider (pipni.cz). It has 256MB RAM: Mem: 262144k total, 148104k used, 114040k free, 0k buffers It's running on Debian Squeeze. I always get this error when I run a Java program: Error occurred during initialization of VM Could not reserve enough space for object heap Could not create the Java virtual machine. I tried to use Xms, Xmx, Xss with low values and still same result. ulimit -v gives me "unlimited". My application will be pretty simple and I need to use rmiregistry also. Can somebody help?

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  • Roaming Profile to act as a redirected folder? Dropbox in roaming profile is also causing slow login/logou

    - by user147069
    As title, what I'm wondering to know is .. if the roaming profile with Windows 2008 R2 Server (I'm talking about V2 profile - Windows7/Windows8) can work as a redirected folder (it can be done with the Desktop, Contacts, Download, AppData, My Documents). The roaming profile is copied at each login (server - client) and at each logout (client - server). This is causing slow login and logout for huge roaming profile. I can't stop the usage of roaming profile since the environment is a School with 1000 users. But I have big issues with users who populate the profile path (which is mapped on "User's File" under Windows7/8) with other stuff than the already redirected Desktop and My Document. A typical problem is given by the Dropbox folder... Any solution?

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  • Can a PCI Graphics card, and AGP be used together? [closed]

    - by Everyone
    The question pretty much says it all. I use an old 845GBV board ( to-date reliant upon the integrated graphics processor ). All slots on the board are unused. Lately I've been thinking in terms changing it to a dual monitor so that I can use one console for documentation/help/sample code/whatever, the other one to play with code. Assuming this board can handle a PCI GPU, can an AGP4x board coexist with a PCI GPU?

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  • Advanced grep, where string doesn't begin with a URL

    - by Webnet
    I'm seeing tons of error logs on our site that are looking for favicon.ico. The favicon is now hosted off of amazon S3 but it appears somewhere we still have a link to the old one that I can't find anywhere (I'm a new employee here so I'm not too familiar with things). How can I do a grep search for favicon.ico that doesn't start with http://s3.amazon.com ?

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  • A script so that you don't forget your usb drive on a public computer

    - by Ava Gailliot
    So I have a problem because I'm an idiot. I seem to always leave my usb drives in public computers at school and the like. I unmount them and log off leaving them still in the pc, and of course I then lose my information and my drive which can be costly. Is there a small script somewhere that I can install to my drive that prompts me to take out my usb stick when I log off of a computer? Since this is mostly for use with public computers I can't put anything on my drive that will later need some sort of admin permissions. I guess if all else fails I'll probably put my drive on a lanyard and keep it around my wrist. lol. Does anyone else have this problem?

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  • How to manually check Ubuntu version? (e.g. from hard drive)

    - by tkoomzaaskz
    There is a fast way to check ubuntu version of the system: $ lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 11.10 Release: 11.10 Codename: oneiric But what are the files that store this information and how can I access them? Particularly, I've got an old partition with a dead Linux lying there and I would like to check what was its Ubuntu version. lsb_release -a shows my current Linux version only...

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  • use ubuntu from a removable drive to work both on laptop and desktop computer

    - by moragos
    my laptop, which i run ubuntu on, is getting a bit old and i find it's getting slower and slower at running applications. My desktop computer is stronger, but I can't give up on the portability of my laptop. I was thinking of installing a HD drawer for both my laptop and desktop. and when I come home just pull the HD from the laptop and plug it into the desktop. I wanted to ask if anyone have tried it or have any inputs on the idea

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