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• Windows 7 Firewall configuration

  - by Will Calderwood

  I had a PC set up with a VPN. I used the Windows 7 firewall to block all NON-VPN traffic to the internet, but all LAN traffic was allowed. So, with the VPN connected I could connect to all networked machines and the internet. Without the VPN connected I could only connect to the LAN and had no internet access. Unfortunately my drive failed, and I'm setting up the machine again with a replacement drive. I can't for the life of me work out how to set up the firewall again. I can easily set it up to block all NON-VPN traffic, but can't work out how to that and still allow all LAN traffic whether the VPN is connected or not. Some pointers would be useful. Thanks.

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• concrete uses of LDAP?

  - by ajsie

  im new to LDAP. i wonder what are some concrete examples of using LDAP. things that are MUCH more easier to do when you got 3-7 linux computers in a small company network. one use that is very important for me seems to be that you configure LDAP to handle system authentication. then you dont have to create same accounts in all computers. are there other things that are a MUST DO for a small network to save more time? my small network is for apache servers and database servers. and should LDAP be in an own machine? cause i guess its not good to put it in apache or database servers since these are performance dependent.

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• Hosting a web site at home: ISP Blocking port 80?

  - by tombull89

  Hello, I presume this is a better place to put this rather than server fault. I'm interested in setting up a small site to host at home as a "proof of concept" exercise, i.e. to prrove that I know how to do it. I've got a (virtual) server 2003 machine with a site on it, all configured with port forwarding through to 80 on my server. I have a Belkin F5D7634 which I have put my DYNDNS details in but when I try to go to my DYNDNS address it comes up with the page cannot be displayed. My ISP is Carphone Warehouse/AOL and I've been unable to find any information if they block port 80. If they do, can anybody reccomend a home provider that does not block port 80? Regards, Tom.

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• VMWare Hypervisor vSphere 5 - VM static ip from VLAN NAT

  - by Ian Livingstone

  I have a VMWare vSphere 5 Hypervisor server that has a static ip address assigned to it by VLAN that is configured to perform NAT. The static IP is assigned to the bare metal server via the NIC's mac address. I want to setup a guest machine to also have a static ip address, how can I go about having this setup? I have assigned a IP for the guest's MAC Address but it doesn't seem to be working as when I ping the ip address it does not respond. The guest is running ubuntu 10.04 server edition. I am trying to assign it a static public ip address. Any help would be greatly appreciated.

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• Dynamic dns client stops updating when login off Windows

  - by Sami-L

  Running a dynamic dns updater software on Windows server 2008 R2, when I log off the software stops updating, I concluded that I have to look for a dynamic dns client running as service, I found this task a bit heavy since there is a big variety on the net, it needs a long time to make the right choice as many details are to pay attention to, free, masked fees, fees, installed on machine, configured on router, trusted, not trusted, compliant with OS, not, ... That's why I am here to ask for help on this matter, I would like to be advised by skilled people, to find a trusted free dns updater (client) for Windows which can run as service, and maybe which can send email when update fails.

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• How to install GNOME desktop from DVD on CentOS 6 using the command line?

  - by alwbtc

  I have installed CentOS 6 in Virtualbox. Although I have chosen to install General Purpose GNOME Desktop, the GNOME desktop does not start. All I get is a black and white text prompt. I would like to know how I can install GNOME Desktop from the CentOS DVD. How do I mount the DVD image? How do I install GNOME desktop from command line? If I already have the GNOME Desktop installed, why doesn't it start? How can I check from command line that I have GNOME installled? This virtual machine does not have internet connection, that's why I want to install the GNOME Desktop from DVD.

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• Site failing randomly - could it be Cloudflare or something weird in the JS?

  - by James

  I've been working on a simple site that uses javascript to fade through some fullscreen background images as well as some other simple animations. I've tested the site on Chrome, Safari, FF and Opera on OSX, IE8+ on Win7 and Chrome & FF on Ubuntu and everything looks as I'd expect it to. However, I've had reports of the site failing to load (stops at the stage where the background fades up) on Safari and Chrome on OSX and Win. I can't replicate this on any setup so I'm finding it impossible to troubleshoot. Google's instant preview shows the site fine as does most of the options at browsershots.org so I'm really scratching my head. I'm running the site's traffic through Cloudflare and I'm wondering whether anyone can see (or knows from other sites) why Cloudflare might be mangling the JS or causing a problem somehow (I don't get any errors in the JS error console). Of course, if you can replicate the problem on your machine and can suggest an area to look at that would be amazing but I'm hoping that, like me, you don't see any problem with the site! Here's the site: http://www.bighornrevelstoke.com Thanks, James

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• starting up with VPS or cloud hosting? [closed]

  - by FlyOn

  Possible Duplicate: How to find web hosting that meets my requirements? Summary: I want to start hosting my product. I'd like to register domains (at some point). I'm a linux beginner. Thinking about scalability and price, I'm thinking am I better off on a VPN to get started or would some form of cloud hosting be better (not being familiar with either). Full question: I'm creating a product where people can create their own 3D representations of whatever data / info they have, and (re)organise that data. The product is coming along beautifully on my local environment, but it's about time I start getting some form of hosting ready, and I could really use some advice where / how to get started: I'd like people to be able to move/register their own domains on my server. I could start without this just to demo the product, but it would be the very first on the todo list. I'd like to automatically copy some files / install databases etc for each domain. I probably want to see if I can let users manage their own subdomains at some points, but for now: I'd like start as simple as possible. I've always on a windows machine, so my linux experience is quite basic. I really don't mind getting into it, but I'm thinking it's better to get my product out first of all and see where to go from there. Although... I'd like things to be scalable. If I set up some reseller VPN now which only scales to 100 domains or so, which means I have to set up something else / move again when I pass that level, or which means that I'm in trouble if I suddenly get lots of new customers... hmm. Finally, I need to start cheap. I'm putting all I have into starting this company, and live on very little. So before I have any customers, 50 dollars a month is a fair bit and 100 dollars a month may be too much. If anyone has some tips to help get me started I'd be really grateful.

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• How to repair unbootable Fedora install

  - by Cerin

  How do you repair/reinstall Fedora without deleting any existing partitions or data? I was attempting to upgrade some old Fedora 13 servers to 17, following the instructions in the wiki. After the 14-15 upgrade, rebooting resulted in the output: Dropping to debug shell. sh: can't access tty; job control turned off dracut:/# Running dmesg also shows: dracut Warning: No root device "block:/dev/mapper/VolGroup-lv_root" found Googling shows this error is typically related to some weird RAID issues, but my server is a virtual machine not using any RAID. Using a rescue CD, I can chroot /mnt/sysimage, and all packages and data still seems to be there. How do I make the system bootable again?

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• Implicit OAuth2 endpoint vs. cookies

  - by Jamie

  I currently have an app which basically runs two halves of an API - a restful API for the web app, and a synchronisation API for the native clients (all over SSL). The web app is completely javascript based and is quite similar to the native clients anyway - except it currently does not work offline. What I'm hoping to do is merge the fragmented APIs into a single restful API. The web app currently authenticates by issuing a cookie to the client whereas the native clients work using a custom HMAC access token implementation. Obviously a public/private key scenario for a javascript app is a little pointless. I think the best solution would be to create an OAuth2 endpoint on the API (like Instagram, for example http://instagram.com/developer/authentication/) which is used by both the native apps and the web app. My question is, in terms of security how does an implicit OAuth2 flow compare (storing the access token in local storage) to "secure" cookies? Presumably although SSL solves man in the middle attacks, the user could theoretically grab the access token from local storage and copy it to another machine?

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• /etc/hosts.deny ignored in Ubuntu 14.04

  - by Matt

  I have Apache2 running on Ubuntu 14.04LTS. To begin securing network access to the machine, I want to start by blocking everything, then make specific allow statements for specific subnets to browse to sites hosted in Apache. The Ubuntu Server is installed with no packages selected during install, the only packages added after install are: apt-get update; apt-get install apache2, php5 (with additional php5-modules), openssh-server, mysql-client Following are my /etc/hosts.deny & /etc/hosts.allow settings: /etc/hosts.deny ALL:ALL /etc/hosts.allow has no allow entries at all. I would expect all network protocols to be denied. The symptom is that I can still web browse to sites hosted on the Apache web server even though there is a deny all statement in /etc/hosts.deny The system was rebooted after the deny entry was added. Why would /etc/hosts.deny with ALL:ALL be ignored and allow http browsing to sites hosted on the apache web server?

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• Generic tool to configure startup applications on Unix

  - by srid

  Is there an automated deployment tool that manages startup applications on a variety of machines, especially the Unices? Or is the only hope to study the nuts and bolts of each Unix (osx, linux, solaris, hpux, aix) on how to configure applications to launch on system startup? I want to run them as a specific user, instead of root. At the moment, I run them all within a screen session .. which is a hassle, as this requires manual intervention every time the machine is rebooted for some reason. Ideally, I am looking for a tool that would read, say, ~/.startup-programs which file contains, on each line, the command line to launch the needed daemons. And this tool should work on OSX, Linux, Solaris, HPUX and AIX ... writing the appropriate startup scripts for each platform.

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• MAMP PHP5.3 and 5.4

  - by musoNic80

  I've just downloaded the latest version of MAMP (2.1) but have run into a few issues. I'm developing using Symfony2 which requires php5.3 minimum. It also requires a php accelerator, ideally APC. So, I set MAMP (I'm not using MAMP PRO) to use php 5.4. Problem solved, I thought. Apparently not though. It turns out MAMP have decided not to support APC (or any accelerator as far as I can see) with their 5.4 version apparently due to it being buggy (really?!?!). Ok, so I'll just use 5.3 instead. Apparently not. It turns out that although MAMP has installed 5.3 on my machine I can't select it in the preference pane. I get a choice of 5.2 or 5.4! Is there a workaround for this?

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• KB980408: Fix for Explorer freezing: does anyone know what app caused it?

  - by Ian Boyd

  Microsoft released an update for Windows 7 today (Tuesday, April 27, 2010): KB980408: The April 2010 stability and reliability update for Windows 7 and Windows Server 2008 R2 is available. The update fixes, among other things: Windows Explorer may stop responding for 30 seconds when a file or a directory is created or renamed after certain applications are installed. i'm not experiencing it on my own Windows 7 machine, but two colleagues at work were experiencing the problem. i would really like to know what applications were causing problems. Microsoft will never call out the misbehaving applications. i want to know what software i should be ridiculing and insulting. And avoid in the future. Did anyone who was experiencing this problem isolate the applications?

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• Mac OS X Server 10.6.6 "disables" CPU in VMware Fusion

  - by wjlafrance

  Hello! I installed Mac OS X Server 10.6.0 in VMWare Fusion the other night and it worked perfectly, until I ran Software Update. I upgraded to 10.6.6 through the combo updater, and now when I start the VM it says: "The CPU has been disabled by the guest operating system. You will need to power off or reset the virtual machine at this point." I've switched the operating system in the options to OS X Server 32bit, 64bit, and even to Windows 7, and nothing has worked. Does anyone have any ideas?

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• Apache unable to write to files and folders on Fedora 16

  - by mickburkejnr

  I've recently installed Fedora 16 on a new PC, and I'm intending to use it for developing my websites. I've set up Apache to host multiple development sites on the machine. Right now though, I am trying to install a PHP framework (Symfony2) and I'm unable to install it on to the web server. It comes back with an error saying that it's unable to write to the cache folder on the server. I have checked and modified the folder so that it is writeable, but still the error keeps being displayed? What am I doing wrong?

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• Can't connect to my FTP server, why?

  - by Joseph

  I have a windows 2008 server running with FTP 7 on IIS 7. I have it configured to connect as it is out of the box, with a particular user (lets say john) with read/write access. When I use my FileZilla client software, I can connect to the server as john just fine. No problems at all. However, when I try to connect using Windows Explorer or using the cmd prompt I get stone walled, saying "Login failed". My client machine is Windows Vista Ultimate. Does anyone know what might be causing this?

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• How to detect when a user copies files from a server over the network?

  - by Mr. Graves

  I have a few virtual servers + desktops that are used for shared development with remote users, including some consultants. Each user has an account with access to most aspects of the server. I don't want to prevent people from being productive, or track passwords or read emails, but I do want to know when and what files they copy from the virtual server or what they upload from the server to a remote site, and what if any applications they install. This will help make sure my IP is protected, that no one is installing tools they shouldn't, and that things are licensed appropriately. What is the simplest way to do this? In order of importance I would say detecting file transfers off the machine to be most critical. Thanks

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• Can I install new version of Ubuntu in spair RAIDed partition with unetbootin

  - by artfulrobot

  I have Ubuntu 11.04 running on my home desktop which has 2 hard drives mirrored by RAID. The drives are partitioned with a big data partition, a swap partition and a couple of 20Gb partitions for OSes, one is 11.04 which is in use, and the other is kept spare for installing a later version. Which is what I'd like to do now. The idea of a 2nd partition for new OS is that I can try it, and if it's problematic, I can boot back into the original one - the machine is shared with others, so I need it to stay available! I have had horrible problems with software RAID after using a Live USB stick - basically it messes up the internal numbering of the RAID drives or something, anyway, the result is you can't boot after using it :-( and have to spend ages re-assembling the arrays, trying to remember grub commands etc etc. Quite a shocker when you consider booting from a Live USB is supposed not to affect the existing system. As I'm installing in a RAIDed disc, I would typically use the Alternative install (sad to hear that this is going to be dropped in future). However, I think I might be able to use unetbootin to trick the system into working on top of the existing system that understands RAID, with the normal ISO? If unetbootin loads from drives that are already understood to be RAIDED, then presumably it will only see md0... instead of sda, sdb... and as long as I don't need to repartition (I don't) it should be fine, right? Or is that just plain foolishness? Please tell me before I end up with a dead system (again!)

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• Hydraulics in game

  - by Mungoid

  I'm not completely sure if this would be better in the Physics site or not as this question is more about how hydraulics should work in game as opposed to how they really work (although that is taken into account) - So I apologize if this is in the wrong place. A project we are on, we have a machine with hydraulics that are powered (They don't just look like they move something, they are the only thing moving/turning/lifting something) - However, the hydraulic extends the same speed no matter what it is pushing. So, say there is a 10 ton object attached to one end of the hydraulic and the other end is attached to a plate on the ground. In real life it takes a few seconds to build up pressure depending on how heavy the object is, but in our project the hydraulics don't care about that. It will lift a 100 ton object the same speed as a 10 ton object. We have a way to fake the hydraulic pressurizing by reducing the 'drive amount' (how fast or slow the hydraulic extends) when we sense that it is touching the ground and that does a relatively decent job but we would like to be able to take other things into account like engine speed, ratios, loads, etc. but we aren't too sure what we need to think about. I'm kinda wondering if anyone here has any experience with this and could offer some suggestions on what to take into account?

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• .desktop shortcuts aren't working for java applications in LXDE

  - by chaz

  I just installed minecraft on my LXDE desktop/Lubuntu machine and I'm trying to create a .desktop file on the desktop that executes java -jar ~/minecraftlauncher.jar. The command works in bash scripts and the terminal but refuses to work when I click on my .DESKTOP shortcut which is suppose to execute the same command. I've experimented with other jars and they can't seem to start too. Here is my xsession log: ** (pcmanfm:1572): DEBUG: launch command: <java -jar ~/Downloads/minecraft_server.jar> ** (pcmanfm:1572): DEBUG: sn_id = pcmanfm-1572-administrator-Dimension-3000-java-14_TIME14031891 Unable to access jarfile ~/Downloads/minecraft_server.jar ** (pcmanfm:1572): DEBUG: launch command: <java -jar ~/minecraftlauncher.jar> ** (pcmanfm:1572): DEBUG: sn_id = pcmanfm-1572-administrator-Dimension-3000-java-15_TIME14070158 Unable to access jarfile ~/minecraftlauncher.jar UPDATE: Whoops, it seems to work when I give an absolute path. I guess the home path is something else. UPDATE: I guess X doesn't resolve the home specifier. I ran a .desktop file that executed a script that outputs the current directory, and it seems to be correct.

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• How do I find out which process is eating up my bandwidth?

  - by Bruce Connor

  I think I'm being the victim of a bug here. Sometimes while I'm working (I still don't know why), my network traffic goes up to 200 KB/s and stays that way, even tough I'm not doing anything internet-related. This sometimes happens to me with the CPU usage. When it does, I just run a top command to find out which process is responsible and then kill it. Problem is: I have no way of knowing which process is responsible for my high network usage. Both the resource monitor and the top command only tell me my total network usage, neither of them tells me process specific network info. Is there another command I can use to find out which process is getting out of hand? I've already tried killing all the obvious ones (firefox, update-manager, pidgin, etc) with no luck. So far, restarting the machine is the only way I found of getting rid of the issue. EDIT: (just to be clear) I've found questions here about monitoring total bandwidth usage, but, as I mentioned, that's not what I need. UPDATE: The command iftop gives results that disagree entirely with the information reported by System Monitor. While the latter claims there's high network traffic, the former claims there's barely 1 KB/s. Thanks

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• TCP connection stuck in SYN_RECV state despite ACK received, Linux 2.6.18, embedded, ARM

  - by waynix

  My client cannot connect to my protocol port (TCP) after some network glitches, even though all other protocols (telnet/HTTP/FTP) work fine. netstat shows that my server is listening and tcpdump on the server shows all 3 packets are exchanged: 18:29:16.578964 IP 10.9.59.10.3355 10.9.43.131.5084: S 2602965897:2602965897(0) win 65535 <mss 1460,nop,nop,sackOK> 18:29:16.579107 IP 10.9.43.131.5084 10.9.59.10.3355: S 3464857909:3464857909(0) ack 2602965898 win 5840 <mss 1460,nop,nop,sackOK> 18:29:16.579284 IP 10.9.59.10.3355 10.9.43.131.5084: . ack 1 win 65535 But somehow netstat -t shows the connection still in SYN_RECV, as if the ack is not seen by the TCP state machine. I have to restart my server to get it to work. syncookie is not enabled, and I know from client code behavior and tcpdump that there is no SYN flooding. Help much appreciated.

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• why do Vagrant docs suggest using public IP address 33.33.33.10 for local VMs?

  - by Gert

  I'm following a tutorial to set up vagrant (a tool to build and configure portable virtual machine images), and it seems that vagrant documentation suggests using IPv4 address 33.33.33.10 to configure a new box. That is a publicly routed IP adress, so I'm a bit confused why using this address is suggested. Since I don't own this network, I should not use an address from the 33.33.33.10/8 range. Am I correct in thinking that I should only use either a public address from a network I own, or an address from one of the private ranges as defined in RFC 1918? If so, why does Vagrant documentation suggest otherwise?

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• Transmission shutdown script for multiple torrents?

  - by Khurshid Alam

  I have written a shutdown script for transmission. Transmission calls the script after a torrent download finishes. The script runs perfectly on my machine (Ubuntu 11.04 & 12.04). #!/bin/bash sleep 300s # default display on current host DISPLAY=:0.0 # find out if monitor is on. Default timeout can be configured from screensaver/Power configuration. STATUS=`xset -display $DISPLAY -q | grep 'Monitor'` echo $STATUS if [ "$STATUS" == " Monitor is On" ] ### Then check if its still downloading a torrent. Couldn't figure out how.(May be) by monitoring network downstream activity? then notify-send "Downloads Complete" "Exiting transmisssion now" pkill transmission else notify-send "Downloads Complete" "Shutting Down Computer" dbus-send --session --type=method_call --print-reply --dest=org.gnome.SessionManager /org/gnome/SessionManager org.gnome.SessionManager.RequestShutdown fi exit 0 The problem is that when I'm downloading more than one file, when the first one finishes, transmission executes the script. I would like to do that but after all downloads are completed. I want to put a 2nd check ( right after monitor check) if it is still downloading another torrent. Is there any way to do this?

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