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• Hardware VPN suddenly slow, even after replacement. Free software VPN speed is fast [closed]

  - by Andrew

  In our company we have two remote users, one in Northern California and one in Texas, that connect via VPN. We have a hardware SSL VPN unit, and suddenly this week they experienced massive slowdown, to the point of speedtesting at 0.5 mbps when it is normally 7-10mbps. We replaced the hardware sslvpn but that did not solve the problem. If I have them connect using a free VPN tool like TeamViewer, their speeds are back to normal. Does anyone have any idea why this could happen? We have not made any infrastructure changes so this was very out of the blue and I'm confused as to why even replacing the hardware vpn didn't fix it, if using free software works just fine.

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• Sharing RAM resources between 2 or more computers

  - by davee44

  I know there was a somewhat similar question before: How to share CPU or RAM? But, let me just specify it a little more... When Microsoft Windows requires more RAM capacity than available it uses a swap-file to temporarily store the data there, this is actually something like a hard-drive-based RAM. This technology is used for many years. Theoretically, it shouldn't be too hard to implement a similar technology that uses the RAM of different computer(s) in the network for temporary data storage. This just requires a software that runs on computers in the network that accepts and returns data from/to the main computer and keep that data in the RAM; plus the operation system of the main computer must have the ability to use computers in the network instead of (or in addition to) the swap-file. I wonder, are there any implementations of this idea? This would allow users to build RAM clusters using all of their home or office computers, that will boost the performance of a single computer for some development/gaming/video tasks, etc.

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• Type of AI to tackle this problem?

  - by user1154277

  I posted this on stackoverflow but want to get your recommendations as well as a user on overflow recommended I post it here. I'm going to say from the beginning that I am not a programmer, I have a cursory knowledge of different types of AI and am just a businessman building a web app. Anyways, the web app I am investing in to develop is for a hobby of mine. There are many part manufacturers, product manufacturers, upgrade and addon manufacturers etc. for hardware/products in this hobby's industry. Currently, I am in the process of building a crowd sourced platform for people who are knowledgeable to go in and mark up compatibility between those parts as its not always clear cut if they are for example: Manufacturer A makes a "A" class product, and manufacturer B makes upgrade/part that generally goes with class "A" products, but is for one reason or another not compatible with Manufacturer A's particular "A" class product. However, a good chunk (60%-70%) of the products/parts in the database can have their compatibility inferenced by their properties, For example: Part 1 is type "A" with "X" mm receiver and part 2 is also Type "A" with "X" mm interface and thus the two parts are compatible.. or Part 1 is a 8mm gear, thus all bushings of 8mm from any manufacturer is compatible with part 1. Further more, all gears can only have compatibility relationships in the database with bushing and gear boxes, but there can be no meaningful compatibility between a gear and a rail, or receiver since those parts don't interface. Now what I want is an AI to be able to learn from the decisions of the crowdsourced platform community and be able to inference compatibility for new parts/products based on their tagged attributes, what type of part they are etc. What would be the best form of AI to tackle this? I was thinking a Expert System, but explicitly engineering all of the knowledge rules would be daunting because of the complex relations between literally tens of thousands of parts, hundreds of part types and many manufacturers. Would a ANN (neural network) be ideal to learn from the many inputs/decisions of the crowdsource platform users? Any help/input is much appreciated.

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• Internet Explorer8 on Windows 7 - file download results in "C:\ location not accessible."

  - by Soulhuntre

  Ok, an odd problem. For one user on a Windows 7 x64 system, attempting to download a file with Internet Explorer 8 results in a error "C:\ location not accessible. Access is denied." even though the target location is not on the C:\ drive. No other users have the problem and no other browsers do. The user does not remember deleting any folders recently, and it looks like no new software has been installed. A checkdisk comes up clean. Any ideas? I grabbed some information via Process Monitor that may help with seeing the problem:

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• Apache has many PHP session files

  - by PiTheNumber

  # ls /var/lib/php5 | wc -l 7488 # ls -la -rw------- 1 wwwrun www 0 Nov 9 15:30 sess_vtuh671rlafdidfjmgjfu6065p4tfieg -rw------- 1 wwwrun www 0 Nov 12 02:30 sess_vu9pn476oiqbsd20q4s2brt60b9vg90d -rw------- 1 wwwrun www 0 Nov 9 15:07 sess_vuonfs2cqsdiq8ja51ornh6lp5j9mf93 -rw------- 1 wwwrun www 0 Nov 9 16:02 sess_vuutcad8as55il34db3uqhqrsltd4q6o -rw------- 1 wwwrun www 0 Nov 9 23:26 sess_vv2mrv5dnlnts6das4g5jlfldael4l0e -rw------- 1 wwwrun www 44 Nov 9 20:35 sess_vvc0cfjuvk3lqb5m97fv6gsmv6bjhsdk -rw------- 1 wwwrun www 0 Nov 9 10:33 sess_vvq82fhj9lg29gaejemlb2lrk25mqv7d -rw------- 1 wwwrun www 0 Nov 9 20:36 sess_vvtd4ka8rfmcroa34unl06916ubj8sb9 Most of them are empty. There are not so many users on the server so I wonder where those files came from. Is this a problem or how does apache handle those file? Do they get delete automaticly? Could this be caused by a bad PHP file?

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• Netbeans automatically changes the file owner when updating files

  - by Alon_A

  We use Netbeans IDE 7.2 to edit our PHP files. In the Run Configuration it is configured as Remote Web Site to automatically save the changes on our web server (Centos OS 6.3). The problem is that every time it is updating the files the owner of the file is changed from apache:apache to userThatUploadedTheFile:users. This causes us problems with SOAP cache files that are configured with apache:apache ownership, and we need to manually chownit back to apache:apache. We've checked the "Preserve Remote File Permissions" checkbox, so the permissions are not changed, only the owner. Is there any solution to preserve the ownership ?

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• Directory permissions on Ubuntu Server 10.04 LTS

  - by SebastianOpperman

  I have set up a second drive on Ubuntu Server. The directory displays correctly but Windows users cannot write or create files on the directory. I have Samba set up so Windows can access the drives. here is the last bit of my /etc/samba/smb.conf [personeel] path = /media/windows browsable = yes guest ok = yes writable = yes read only = no create mask = 0775 directory mask = 0775 I want the directory to be shared with writable permissions to everyone who can access the Ubuntu Server. I have tried sudo chmod but to no success. Any help would be appreciated

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• How to explain DRM cannot work?

  - by jerryjvl

  I am looking for the shortest comprehensive way to explain to people that are trying to use DRM as a technology to prevent users from using their data in some fashion deemed undesirable, why their solution cannot work by definition. Ideally I'd like something that: Covers why technically it is impossible to have people access local data, but only in such-and-such a way Imparts an understanding of why this is, to avoid follow-on "But what if" rebuttals Is intuitive enough and short enough that even a politician (j/k) could grasp it When faced with this situation I try to be clear and concise, but I usually end up failing at least on one of these points. I'd really like to have a 'stock' answer that I can use in the future.

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• Can GnomeKeyring store passwords unencrypted?

  - by antimeme

  I have a Fedora 15 laptop with the root and home partitions encrypted using LUKS. When it boots I have to enter a pass phrase to unlock the master key, so I have it configured to automatically log me in to my account. However, GnomeKeyring remains locked, so I have to enter another pass phrase for that. This is unpleasant and completely pointless since the entire disk is encrypted. I've not been able to find a way to configure GnomeKeyring to store its pass phrases without encryption. For example, I was not able to find an answer here: http://library.gnome.org/users/seahorse-plugins/stable/index.html.en Is there a solution? If not, is there a mailing list where it would be appropriate to plead my case?

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• Number of malicious attacks defended/done on the average user daily [closed]

  - by DalexL

  As a web hoster, it is very easy to notice the large amounts of exploit/abuse attempts done on my servers. Out of curiosity, how often are these attempts done on the average user? I'm assuming almost all of them are prevented just by simple security protocols in place by their browsers, local network, etc. How many attempts, on average, are committed against a single user daily through any method? (email, internet, downloads, etc.)? If known, what percentage of these things are blocked by the average users security? I tried googling but I was having a hard time getting the right search terms together.

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• Windows 8 switch user is very slow

  - by Chris Weber

  I recently upgraded to Windows 8 from Windows 7. One major annoyance is how slow the "switch user" command is. In Windows 7 switching users was fairly fast. I've got an SSD drive with pretty good hardware, so I'm suspecting it's something with Windows 8, either a defect, or the fact that I upgraded from Windows 7 instead of doing a clean install. Anybody have this problem? My wife is complaining enough about Windows 8 and this is one of the biggest complaints.

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• Why is my library/Documents shortcut showing all files from all subfolders in one flat list?

  - by korro

  I am using Windows Explorer on Windows 7. In My Documents there's a folder 02 KOOP. If I go there using the adress bar: D:\users\username\My Documents\02 KOOP I get a view of my subfolders and some files: However when I use the Documents shortcut under Libraries, and then go to the 02 KOOP folder, all files that are located in all subfolders are listed in one big list. When you view the file properties, the actual location is shown: This is the only subfolder of My Documents that has this behaviour. Did I accidentally change some setting, or is something wrong? Is this some setting I accidentally changed?

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• Apache has no rights to unzip file uploaded by DirectAdmin created FTP user

  - by FlyOn

  I know similar things have been asked a thousandfold, but I can't seem to figure it out.. I have recently started renting a VPS. It runs DirectAdmin. I created a reseller account in the admin account, and created a new user (with FTP account) with the reseller account. I logged in with FTP as the created user and uploaded a zip file and a php file which will extract the zip. But when running the script in the browser I get "Permission denied" errors however. Probably because Apache is not in the same group as the users FTP account. Now my question is: How can I solve this once and for all, so that I don't have to do it again for every new user account I create through DirectAdmin?

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• Why am I getting [mount error(22): Invalid argument] while trying to mount SMB network drive?

  - by Steve_

  Disclaimer: I am very new to Linux :) Anyway, onward: I have a fresh instance of Ubuntu Server (12.04.1 LTS) running on my network and I want to mount a network drive to the server so I can access the contents. The network drive is a SAMBA compatible drive running Darwin OS. If I run the following command: smbclient -L //192.168.0.2 -U myuser It prompts me for the password and then displays output similar to: Domain=[SERVER01] OS=[Darwin] Server=[@(#)PROGRAM:smbd PROJECT:smbx-105.4.0] Sharename Type Comment --------- ---- ------- Comp Staff's Public Folder Disk CompRaid03 Disk Dropbox Disk Groups Disk IPC$ IPC Public Disk Users Disk compstaff Disk However, when I try and mount the CompRaid03 share, using this command: sudo mount -t cifs //192.168.0.2/CompRaid03 /mnt/myshare -o username=myuser I get the same password prompt, but after putting the correct password in, I received this error: mount error(22): Invalid argument dmesg | tail returns: [23576.037373] CIFS VFS: cifs_mount failed w/return code = -22 I don't understand what is wrong with this command. I've managed to mount a share on my current (Windows 8) machine using basically the same command but with a different IP address and share name (obviously). I've spent a good few hours trying to solve this and got no where. Any help or pointers would be greatly appreciated. Thanks Steve EDIT As suggested I've also trued using "user=" instead of "username=": sudo mount -t cifs //192.168.0.2/CompRaid03 /mnt/svnrepo -o user=myuser This results in the same "Invalid argument" error.

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• What are the major distinctions between PureDarwin and FreeBSD?

  - by ??????? ???????????

  I'm looking to install a different unix on my workstation to acquire some perspective on GNU/Linux and out of curiosity. I have narrowed my options down to these two. The reason for considering PureDarwin is because I have very little experience with Apple's products. So my question is will installing and using PureDarwin give me a closer understanding of OSX than would running FreeBSD? What I have in mind are day to day routines like adding users, installing software and configuring various aspects of the underlying OS. I know that the GUI of OSX would not be available, but that is not a concern. As a secondary, less important question, can I buy OS X in the apple store and run it in a virtual machine or does that violate their EULA?

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• Backup of "Leavers" network directory

  - by Mez

  I want to create a backup of a Leavers network home directory. I've generally done this before by just creating an iso with genisoimage and then burning it. However, it seems that the latest users have 10G in their files. For archival purposes, I want to be able to burn these to multiple DVDs. How do I create these DVD iso images (I know it's got something to do with tar and stream-media-size, and then how do I restore them if I need them again? Using Debian

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• TFS 2012 or TFS Azure (Preview)

  - by Fore

  We want to migrate our current TFS 2010 solution that's hosted today in one of our own servers to TFS 2012 hosted somewhere else. We don't want to handle the servers any more, and therefor are looking at alternatives. TFS preview / Azure is one alternative, hosted in the cloud, but I'm not that happy with forcing users to use live id, and we don't have an AD. My second thought was to create a Azure virtual mashine, and there install and host TFS 2012. Is there any downsides with this? Compared to the price of bying a VPS this is cheap and feels reliable in Azure? Do you have any other ideas?

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• How to prevent nginx from appending the location to root? [duplicate]

  - by simonszu

  This question already has an answer here: nginx location pathing issue 2 answers I want to serve an Icinga Webview via nginx. This webview should be accessible via myserver.com/icinga (as the debian autoconfig for apache will do). I have the following lines in my nginx config: location /icinga { root /usr/share/icinga/htdocs; index index.html; auth_basic "Restricted"; auth_basic_user_file /etc/icinga/htpasswd.users; } However, i get an error 404 and a log entry that says: *10 open() "/usr/share/icinga/htdocs/icinga" failed (2: No such file or directory), So it seems that nginx appends the location value to the root value. I think i figured it out how to prevent this some time ago, but i did not document it for myself and have forgotten how to do it. And now i can't fix it for myself. Can you tell me how to prevent this behaviour?

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• I can not cd "LaunchAgents" on macbook

  - by why

  after installing mongdb on my macbook-pro, it tells me: If this is your first install, automatically load on login with: cp /usr/local/Cellar/mongodb/1.6.3-x86_64/org.mongodb.mongod.plist ~/Library/LaunchAgents launchctl load -w ~/Library/LaunchAgents/org.mongodb.mongod.plist If this is an upgrade and you already have the org.mongodb.mongod.plist loaded: launchctl unload -w ~/Library/LaunchAgents/org.mongodb.mongod.plist cp /usr/local/Cellar/mongodb/1.6.3-x86_64/org.mongodb.mongod.plist ~/Library/LaunchAgents launchctl load -w ~/Library/LaunchAgents/org.mongodb.mongod.plist Or start it manually: mongod run --config /usr/local/Cellar/mongodb/1.6.3-x86_64/mongod.conf but after i copy org.mongodb.mongod.plist to ~/Library/LaunchAgents, it tells me launchctl load -w ~/Library/LaunchAgents/org.mongodb.mongod.plist launchctl: Couldn't stat("/Users/liuqiang/Library/LaunchAgents/org.mongodb.mongod.plist"): Not a directory and also i can not cd "~/Library/LaunchAgents", but i can ls the directory! "~/Library/LaunchAgents" is a strange directory in mac.

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• wifi key masking

  - by Warren Bullock III

  Hello, We currently utilize wifi access in some of our buildings, we are not using RADIUS at this point, but we are using WPA2 with PKI, the issue has recently come up that we want to keep our key private so we generally setup access for our users providing them the wifi key. The problem is that windows seems to give the option to go back into the wireless properties and unmask the PSK. We need to resolve this ASAP is there a way to make certain that the PSK remains masked regardless even if your logged in as a local administrator to the machine? Thanks in advance.

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• Installing software from source

  - by Learning

  I'm trying to understand the rational behind installing from software from source in Ubuntu 12.04. Obviously, I know I can download what I need from repos, but I want to develop a deeper understanding of Linux. As a Windows users, when I download a program I double click it, and it installs into the program files directory unless I specify otherwise. When I want to uninstall it, Windows has a tools that does that for me. When I install a program in Linux, where does it install to? How do I uninstall it afterwards? Are there residual files left over? How would I tell if it's been fully removed? For instance, I'm going to install LMMS (Linux Multimedia Studio) from source. I download and decompress the tar ball, and have a folder name lmms_XXX.tar (whatever). The folder is now on my desktop with an install file. If I run the install file from that location, does it install into that folder? If so, can I move that folder to where ever I want? I want thinking about putting it in /opt/lmms

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• Will we be penalized for having multiple external links to the same site?

  - by merk

  There seem to be conflicting answers on this question. The most relevant ones seem to be at least a year or two old, so I thought it would be worth re-asking this question. My gut says it's ok, because there are plenty of sites out there that do this already. Every major retailer site usually has links to the manufacturer of whatever item they are selling. go to www.newegg.com and they have hundreds of links to the same site since they sell multiple items from the same brand. Our site allows people to list a specific genre of items for sale (not porn - i'm just keeping it generic since I'm not trying to advertise) and on each item listing page, we have a link back to their website if they want. Our SEO guy is saying this is really bad and google is going to treat us as a link farm. My gut says when we have to start limiting user useful features to our site to boost our ranking, then something is wrong. Or start jumping through hoops by trying to hide text using javascript etc Some clients are only selling 1 to a handful of items, while a couple of our bigger clients have hundreds of items listed so will have hundreds of pages that link back to their site. I should also mention, there will be a handful of pages with the bigger clients where it may appear they have duplicate pages, because they will be selling 2 or 3 of the same item, and the only difference in the content of the page might just be a stock #. The majority of the pages though will have unique content. So - will we be penalized in some way for having anywhere from a handful to a few hundred pages that all point to the same link? If we are penalized, what's the suggested way to handle this? We still want to give users the option to go to the clients site, and we would still like to give a link back to the clients site to help their own SE rankings.

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• Losing file permissions after rebooting Windows 7

  - by SMTF

  I have a User directory full of files that are not accessible permission wise for the user who's home directory it is. Said user can't run Explorer. For example, it provides an error complaining that permission is not available for required files. I tried various ways to give said user permission of his home directory and things are fine until after rebooting the machine; the permissions reset to the previous state and the problem persists. I followed the solution outlined here. And again things worked until I reboot the machine. I'm in this mess because I replaced a corrupted user profile as outlined here. The original user and the new replacement on are/where both admin accounts. In case it is relevant I will mention that the Users directory is not on the C volume but a D volume on the same machine. Any insight is appreciated.

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• Auto restart server if virtual memory is too low

  - by Sukhjinder Singh

  There are quite number of software running on my server: httpd, varnish, mysql, memcache, java.. Each of them is using a part of the virtual memory and varnish was configured to be allocated 3GB of memory to run. Due to high traffic load which is 100K, our server ran out of memory and oom-killer is invoked. We've to reboot the server. We have 8GB of Virtual Memory and due to some reason we cannot extend to larger memory. My question is - Is there any automated script, which will monitor how much virtual memory left and based upon certain criteria, lets say if 500MB left than restart the server automatically? I do know this is not the proper solution but we have to do it, otherwise we don't know when server will get OOM and by the time we know and restart the server, we lost our visiting users.

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• Having two FTP ports for the user

  - by user1663896

  I'm running vsftpd on RedHat 6.4 using TLS/SSL on port 990. It works great. I have been tasked to have my VSFTPD server running on unencrypted port 21 as well. This gives my users to either use clear text FTP on port 21 or TLS/SSL on port 990. I have tried the following in my vsftpd.conf file and did not work. listen_port=990 listen_port=21 In my config file it has the following SSL parameters: chroot_local_user=YES ssl_enable=YES allow_anon_ssl=NO anonymous_enable=NO anon_world_readable_only=NO force_local_data_ssl=NO force_local_logins_ssl=NO require_ssl_reuse=NO Can VSFTPD run on port 21 and 990? Thanks in advanced.

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