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• NAS device for distributed team

  - by user5959

  We are a distributed team spread across 5 locations. We have a shared drive (1 TB data) at our former location that we are currently accessing via Hamachi VPN. Our shared drive is a network folder on a Windows Server located at one of our locations. The current connection speed is terrible. The upload speed at the current location of the shared drive is very slow. We looking for a NAS device that we can host at another location with better upload speed that all of us can access. I am looking for a NAS device that has these features: Minimal Maintenance as we do not have dedicated IT resources Access data on the device from multiple locations. Ability to create network drive (On Windows Computers Map Network Drive) Upload data from random client computers without having to install software. (Right now, we use LogMeIn Rescue's file manager) Ability handle slow or dropped connections when transferring files (Maximum size 1.5 GB)

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• Tunneling through SSH for 1521 port access?

  - by A T

  I am developing locally on my computer, using my own Apache server with PHP configured. My database however is remotely located on an Oracle 11g Database Server. We were also given a separate remote server for hosting our .html and .php files, however only FTP access has been provided there. Development is far too slow waiting for the FTP connection to push. So I decided to develop locally, but still use the remote DB server. Unfortunately that gives me an error. Not sure how—or where—to integrate tunnelling. Do I add something to the oci_connect HOST in my PHP file, or do I encapsulate my whole environment over SSH?

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• What does VNC reflectors basically do?

  - by honeybadger

  I am confused about what vnc reflector does. From the documentation http://sourceforge.net/projects/vnc-reflector/ I got that it's proxysitting between real VNC server (a host) and a number of VNC clients. My confusion is : 1. Does it make any changes to the coming stream from server 2. Does it make 1 connection with server to connect to many client or the connections are proportionate. Documentation is not clear in this. If anyone can help me?

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• How to add network printer remotely without knowing the IP?

  - by Steve

  Assume your friend from over 100km away asked you to add a network printer to his computer since you're so tech savvy. How would you add network printer remotely in this case? You would need: 0. Remote connection to your friend's computer 1. Printer IP and brand/model names 2. Respective drivers downloaded either from manufacturer's website or Windows Update driver Question is, how would you find out the IP address of the printer without bothering your friend too much with technical steps? Since your friend isn't as tech savvy as you - they wouldn't know which buttons to press to get IP address.

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• Open table cache in MySQL

  - by vvanscherpenseel

  I have my open table cache set to 1800 and I have a total of 1112 tables. MySQL Tuning Primer reports that 100% of my table cache is used yet my table cache hit rate is 5%. I understand that this happens due to concurrent connections all opening tables. I think I should raise the cache limit. I understand that the cache size is limited by the file descriptor limit of my operating system, but are there any other practical limitations I should be aware of? Searching Google or this very website yields mostly posts explaining the connection-factor or come up with indecisive answers. My question: can I safely increase the open table cache limit? Is there a maximum?

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• How can I redirect HTTPS(S) traffic to anothr gateway?

  - by PsyStyle

  I have a network like 192.168.0.0/15 with the default gateway set to 192.168.0.1. Al the workstations of the network use this gateway for all kind of accesses to the Internet. Now I am testing a new Internet connection with another provider and for this I am using a second gateway on the same subnet with 192.168.0.2 as IP address. I want to redirect only HTTP and HTTPS traffic to this second gateway without touching the address of the default gateway set inside every workstation. How can I accomplish this task? What I have to change inside the first's gateway firewall configuration or routes? I tried with a dnat like DNAT loc:192.168.0.1 loc:192.168.0.2 tcp 80 but nothing worked. I use Shorewall for simplicity in configuration but I can understand even theorical answers which I will try to adapt to my case

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• Discrete Math and Computing Course

  - by ShrimpCrackers

  I was recently admitted into a Computing and Software Systems program (basically software engineering) and one of the first courses I'll be taking is called Mathematical Principles of Computing. The course description: "Integrating mathematical principles with detailed instruction in computer programming. Explores mathematical reasoning and discrete structures through object-oriented programming. Includes algorithm analysis, basic abstract data types, and data structures." I'm not a fan of math, but I've been doing well in all my math classes mostly A's and B's ever since I started two years ago, and I've been doing math every quarter - never took a quarter without math - so I've been doing it all in sequence without gaps. However, I'm worried about this class. I've read briefly on what discrete math is and from what my advisor told me, its connection with computer science is that it has alot to do with proving algorithms. One thing that my instructors briefly touched on and never went into detail was proving algorithms, and when I tried, I just wasn't very good at mathematical induction. It's one of the things that I ignored every time it showed up in a homework problem (usually in Calculus III which I'm finishing up right now). Questions: 1. What can I expect from this class? 2. How can I prepare myself for this class? 3. Other tips? Thank you.

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• Multiple Session using port 1081 in one box using SSH

  - by regmaster

  Hi Guru's, I am setting Linux Hopping Station to another different servers. My current config to connect to another servers is using different port to connect. e.g ssh -D 1080 -p 22 [email protected] ssh -D 1081 -p 22 [email protected] Now what I would like to have to share the same port from the same box. ssh -D 1080 -p 22 [email protected] ssh -D 1080 -p 22 [email protected] But when I share it, I will get below error: bind: Address already in use channel_setup_fwd_listener: cannot listen to port: 1080 Could not request local forwarding. How could I configure the same port? help. thank you. I want to share the same port because this is needed when configuring firewall in Citrix Firewall on other machine, not needed to many many ports and keep changing when changing connection. thank you.

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• Logs show lots of user attempts from unknown IP

  - by rodling

  I lost access to my instance which I host on AWS. Keypairing stopped to work. I detached a volume and attached it to a new instance and what I found in logs was a long list of Nov 6 20:15:32 domU-12-31-39-01-7E-8A sshd[4925]: Invalid user cyrus from 210.193.52.113 Nov 6 20:15:32 domU-12-31-39-01-7E-8A sshd[4925]: input_userauth_request: invalid user cyrus [preauth] Nov 6 20:15:33 domU-12-31-39-01-7E-8A sshd[4925]: Received disconnect from 210.193.52.113: 11: Bye Bye [preauth] Where "cyrus" is changed by hundreds if not thousands of common names and items. What could this be? Brute force attack or something else malicious? I traced IP to Singapore, and I have no connection to Singapore. May thought is that this was a DoS attack since I lost access and server seemed to stop working. Im not to versed on this, but ideas and solutions for this issue are welcome.

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• How to setup Microsoft Remote Desktop?

  - by jsoldi

  I'm trying to establish a connection between this app and my Win 8.1 Pro PC, but every guide I've found so far skip steps such as what to put under PC name or under Gateway. Also, should the User name be my email or something else? I've also no idea how to find or add a user in the step 6 of this guide because the only location listed is my PC and I don't even know what am I supposed to search for. I'm not even sure whether I have to add a user or this is an step I can skip. A comprehensive guide for people without experience in networking would be highly appreciated. Both my android tablet and PC are connected to the internet through a home router, in case this matters.

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• Best practice for migrating Shares and Permissions?

  - by TryTryAgain

  We have a Windows 2008 R2 server which is replacing an old Windows Storage Server. The datastore is attached via iSCSI so I do not need to transfer any data. The iSCSI connection is setup on the new machine, and now I'm wondering: How should I transfer the shares and permissions? Do I use PERMCOPY for permissions or is there something better as of Windows 2008 R2 (compared to Windows 2000): PERMCOPY //SourceServer ShareName //DestinationServer ShareName Is exporting/importing registry still a valid option? from: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\LanmanServer\Shares Any help/tips would be greatly appreciated.

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• SSH - SFTP/SCP only + additional command running in background

  - by Chris

  there are many solutions described to get ur SSH-connection forced to only run SFTP by modifying the sshd_config by adding a new group match and give that new group a Forcecommand internal-sftp Well that works great but i would love to have a little more feature. My servers automatically ban IP's which try to connect often in a short time. So when you use any SFTP-Client, which opens multiple connections to work faster it can get banned instandly by the server for a long time. The servers have a script to whitelist users by administrator. I've modified this script to whitelist the user, which runs the script. All i need to do is now get the server to execute that script, when somebody logins. On SSH it's no problem, just put it in .bashrc or something like, but the Forcecommand don't runs these scripts on login. Is there any way to run such a shellscript before or at the same time as the Forcecommand get fired?

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• What is the cause of a vertical white line on an LCD monitor?

  - by Deviruchi D Devourer

  This just happened yesterday when I was browsing the internet. My AOC N941Sw monitor is suddenly showing a thin horizontal white line near the center of the screen. The white line distorts the images. I tried checking the cables for loose connection and dust particles but the white line is still here. There are times the entire image below the horizontal white line flickers and move up and down. When this happens, I just turn off the monitor then the flicker goes away but the white horizontal line is still there. After a few minutes, the same thing happen all over again. Is there a way to fix this?

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• How to record audio in Windows Server 2008 Web SP2?

  - by Aurelio De Rosa

  I face into this problem and before ask here I've searched and read a lot of question but no-one seems to fit to my problem. I have a server running Windows Server 2008 Web with the SP2 and a headset attached to it using audio jack. The server has audio driver since I can listen audio. This OS does not came with the built-in audio record tool (the one I have in Windows 7). I can access physically and remotely (using RDC) to this server with administration permission. My local pc has Windows 7 if it can help. All I want to do is to know if it's possible and how to record audio form the microphone (of the server) and store that file in the server from remote connection. I tried to install several software on the server but everyone fails with a different issues (missing DLL which if I put in the system the error doesn't go away).

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• Second vm not connecting to internet KVM

  - by potsed

  I cannot connect a second VM to the internet. I have two VM's set up and running, the first vm can connect to the Internet fine, the second does not even get a ping through. They are both set up in the same way with the same base packages but different secondary packages. Different sized disks etc. I am a noob with VM and perhaps I am missing something very simple. Like maybe that they have the same mac address or something. They are both using a bridged connection. Any help would be appreciated, and if you need logs please let me know which ones.

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• SVN Checkout error on large repositories

  - by Brian Mitchell

  I wonder if anyone can help me. We have recently migrated our Subversion repository from a VisualSVN Server on Windows to a subversion server on CentOS. The migration was succesfull however we are getting the following error message Error REPORT of svn'/svn/MangoRepository/!svn/vcc/default': Could not read chunk size: Error connection was closed by server (http://servername) Now the workaround for this is simply to perform a update on the repo and it will contine where is left off. Im just wondering if anyone was a permanent fix for this as it can be quite frustrating to repeat my self to 60-70 developers.

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• How to inspect/modify Windows Firewall rules while the Windows Firewall/ICS service is stopped and disabled?

  - by Kal

  I'm trying to fix up my friend's remote Windows Server 2003 R2 machine. I have Remote Desktop access at the moment. However, I notice that Windows Firewall/Internet Connection Sharing service of the remote machine is disabled, which seems to be a bad idea. If I enable and start the service now, I may lose my Remote Desktop access in case the exception rule for Remode Desktop has not been defined in Windows Firewall. So I need a way to inspect and modify exception rules even as the Windows Firewall/ICS service is stopped and disabled. Does anybody know how?

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• PHP / Drupal equivalent of .bat file [closed]

  - by Pamela

  I am new to Drupal and have just started in Drupal 7. I have a very simple .bat file that calls a .txt file to open a ftp connection, get a file off the ftp server and place it on my desktop. Now that I know that works.. (YAY!) I need to figure out how to have it done with a cron job in Drupal, save it somewhere so that I can unzip it somehow and then populate a table in the database with it. Any advice would be greatly appreciated!

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• After upgrade to 12.04 wireless keeps dropping on BCM4312

  - by Sheket

  I know there are plenty of questions very similar to these, but I've tried practically everything and it still isn't working. Some solutions get the wireless connection working, but it goes very slow and drops after a few minutes. Then it won't reconnect and keeps asking for password. Hope you can help me. Thanks in advance. This is the output for sudo lshw -C network *-network description: Network controller product: BCM4312 802.11b/g LP-PHY vendor: Broadcom Corporation physical id: 0 bus info: pci@0000:02:00.0 version: 01 width: 64 bits clock: 33MHz capabilities: pm msi pciexpress bus_master cap_list configuration: driver=b43-pci-bridge latency=0 resources: irq:18 memory:f0300000-f0303fff *-network description: Ethernet interface product: AR8132 Fast Ethernet vendor: Atheros Communications Inc. physical id: 0 bus info: pci@0000:05:00.0 logical name: eth1 version: c0 serial: 00:23:5a:9b:6e:b1 size: 100Mbit/s capacity: 100Mbit/s width: 64 bits clock: 33MHz capabilities: pm msi pciexpress vpd bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd autonegotiation configuration: autonegotiation=on broadcast=yes driver=atl1c driverversion=1.0.1.0-NAPI duplex=full firmware=N/A ip=192.168.0.106 latency=0 link=yes multicast=yes port=twisted pair speed=100Mbit/s resources: irq:42 memory:f0200000-f023ffff ioport:a000(size=128) *-network description: Wireless interface physical id: 1 logical name: wlan0 serial: 00:24:2c:83:f0:81 capabilities: ethernet physical wireless configuration: broadcast=yes driver=b43 driverversion=3.2.0-30-generic firmware=478.104 link=no multicast=yes wireless=IEEE 802.11bg And for lsmod | grep b43 b43 342643 0 mac80211 436455 1 b43 cfg80211 178679 2 b43,mac80211 bcma 25651 1 b43 ssb 50691 1 b43 And for rfkill list 5: phy0: Wireless LAN Soft blocked: no Hard blocked: no

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• Skype audio always goes 'robotic' for the same user

  - by John

  Someone I talk to on Skype a lot has a very persistent issue, where after a few minutes their voice goes very 'robotic'... still understandable but annoying. We can restart the call and it's fine, but fairly consistently after a few minutes it returns. He experiences this with other people too, not just me - I don't have anyone report problems with my audio quality. This is not an ISP issue - he gets the same problem on multiple PCs in different countries, in fact he's even recently moved to a different continent and got a new internet connection... same problem. It seems somehow to be a problem with his Skype account, which is really quite odd. It's been going on for months of not longer.

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• Wireless does not work 12.10

  - by superkoop

  My primary issue is that my wireless does not work after I installed 12.10. The output to rfkill list all: 5: hci0: Bluetooth Soft blocked: no Hard blocked: no The output to lshw -class network is: *-network description: Ethernet interface product: 88E8040 PCI-E Fast Ethernet Controller vendor: Marvell Technology Group Ltd. physical id: 0 bus info: pci@0000:09:00.0 logical name: eth0 version: 12 serial: 00:21:9b:d6:46:51 size: 100Mbit/s capacity: 100Mbit/s width: 64 bits clock: 33MHz capabilities: pm msi pciexpress bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd autonegotiation configuration: autonegotiation=on broadcast=yes driver=sky2 driverversion=1.30 duplex=full ip=192.168.1.102 latency=0 link=yes multicast=yes port=twisted pair speed=100Mbit/s resources: irq:44 memory:fe8fc000-fe8fffff ioport:de00(size=256) *-network description: Network controller product: BCM4312 802.11b/g LP-PHY vendor: Broadcom Corporation physical id: 0 bus info: pci@0000:0b:00.0 version: 01 width: 64 bits clock: 33MHz capabilities: pm msi pciexpress bus_master cap_list configuration: driver=b43-pci-bridge latency=0 resources: irq:17 memory:fe7fc000-fe7fffff The output to lspci -nn for the pertinent information is: 0b:00.0 Network controller [0280]: Broadcom Corporation BCM4312 802.11b/g LP-PHY [14e4:4315] (rev 01) Thus, it seems the solution would be to run: sudo apt-get install linux-headers-generic sudo apt-get install --reinstall bcmwl-kernel-source sudo modprobe wl However, I do not currently have access to an ethernet connection, as I am currently only able to use verizon wireless 3g internet. Thus, is there a way to set up ICS with a Vista machine so that I can access the internet by using the Vista machine as the host? Or, is it possible to fix this by downloading the important packages in vista and moving them to ubuntu via USB drive?

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• How can I sync Access databases and keep them up-to-date?

  - by user327472

  I have an Access database on my server. We split it up and use the front-end database for search data and adding new records or reports in local computer. If we update or add a new record, that writes to the back-end of database. I want to use this database in the other building with other servers. Also, those servers have no direct connection. How can I sync both back-end databases to keep the database data up to date? These details may be useful: It's a big amount of data - about 25,750 client records. I guess there are more than 25 tables at 80 MB.

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• FTP blocked by firewall on windows 8.1 update 1 public network

  - by amik

  I've recently upgraded to Windows 8.1 u1. I connect to VPN to one of my projects, over which I connect to FTP server (using Total Commander 8.51a). Now, when I try to connect, Total Commander hangs on "Download" (in case of passive connection on "PASV" command). I've figured out that the problem is somehow caused by firewall, because it works if I disable firewall or I set the VPN network location to "private" (which I don't want, it is not enough trusted network for me) I tried to add total commander to firewall exception for total commander, both to inbound and outbound rule, but with no success. I have no more ideas how to configure the firewall to make FTP work properly, can you plese help me? thanks in advance.

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• Rejecting new HTTP requests when server reaches a certain throughput

  - by user56221

  I have a requirement to run an HTTP server that rejects new HTTP requests (with a 503, or similar) when the global transfer rate of current HTTP responses exceeds a certain level. For example, if the web server is transferring at 98Mbps, and a new HTTP request arrives, we would want to reject this (as we couldn't guarantee a good speed). I've had a look at mod_cband for Apache, limit_req for nginx, and lighttpd's rate limiting features, but none of them seem to handle my (rather contrived, granted) use case. I should add that I'm open to using pretty much any web server, and am open to implementing this in iptables rules if someone can craft such a rule! (Refusing the TCP connection is fine, it doesn't have to respond with an HTTP 503). Any suggestions?

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• Avoid putty ssh terminal to crash when disconnecting from server

  - by JBoy

  I'm connecting via ssh to a remote 'live' server where i have some bash scripts automated via the crontab, when an error happens in some of the automation scripts within the server, the connection to the server is killed, this is fine to me, but the problem is that Putty closes the entire window, which is a behavior i don't want. I have checked all around the web, unfortunately the putty site does not have a support page, but nothing. Under putty's option i have tried all the menus expanding all options, but still i cant find the right one, i would expect it to be under Windowbehaviour Do you have an advice? Thx

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