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• Internet Timeouts with TP-Link TL-WN821N v2 wireless usb stick

  - by user1622959

  A short time after accessing the internet, the browser/download times out. Before the timeout, the internet works OK briefly; afterwards, the wireless is still connected with a strong signal, but every internet access results in a timeout. When I leave the PC for a while, the internet is back just to timeout again as soon as I start using it. The same happens when I reconnect to the router. Also, when I surf the internet, it takes a couple of minutes until the timeout, but when I download something, it times out in a matter of seconds. The wireless adapter works just fine in Windows and internet via ethernet cable works just fine in Ubuntu. Does anyone have the same problem or knows a solution. I use Ubuntu 12.10 x64. The problem occurs since I installed ubuntu (which was a few days ago). Here some stuff that might be usefull: serus@serus-Ubuntu-PC:~$ lsusb Bus 002 Device 002: ID 0cf3:1002 Atheros Communications, Inc. TP-Link TL-WN821N v2 802.11n [Atheros AR9170] serus@serus-Ubuntu-PC:~$ lsmod Module Size Used by carl9170 82083 0 serus@serus-Ubuntu-PC:~$ modinfo carl9170 filename: /lib/modules/3.5.0-21- generic/kernel/drivers/net/wireless/ath/carl9170/carl9170.ko alias: arusb_lnx alias: ar9170usb firmware: carl9170-1.fw description: Atheros AR9170 802.11n USB wireless serus@serus-Ubuntu-PC:~$ iwconfig wlan0 IEEE 802.11bgn ESSID:"virginmedia0137463" Mode:Managed Frequency:2.462 GHz Access Point: A0:21:B7:F8:29:B6 Bit Rate=240 Mb/s Tx-Power=20 dBm Retry long limit:7 RTS thr:off Fragment thr:off Power Management:off Link Quality=66/70 Signal level=-44 dBm Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:1399 Invalid misc:18 Missed beacon:0 serus@serus-Ubuntu-PC:~$ sudo lshw -C network *-network description: Wireless interface physical id: 1 bus info: usb@2:2 logical name: wlan0 serial: 00:27:19:bb:00:19 capabilities: ethernet physical wireless configuration: broadcast=yes driver=carl9170 driverversion=3.5.0-21-generic firmware=1.9.4 ip=192.168.0.6 link=yes multicast=yes wireless=IEEE 802.11bgn

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• Setting a wireless access point on Ubuntu server 11.10

  - by Solignis

  I am trying to setup a wifi access point with my Ubuntu server. I have managed to get my phone to connect the wireless and now it get a DHCP lease. Though it still cannot ping out or get pinged by anything on my network. I am prety sure my problem is iptables, but I not sure what would be wrong. Here is what my rules look like. (The ones pertaining to the bridge interface) # Allow traffic to / from wireless bridge interface iptables -A INPUT -i br0 -j ACCEPT iptables -A OUTPUT -o br0 -j ACCEPT I am guessing my rules are a little lean, the bridge exists on the same subnet as everything else on my network, I am using a 10.0.0.0/24 subnet. EDIT Oh yeah I should mention also, when I do a ping test, I get Destination Host Unreachable as the error.

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• Can someone explain how a GUI works and when I should start using one?

  - by David

  I've been learning C++ for about a month now, and before I go any further, I'd like to clear up this tedious question I keep on having. I know what a GUI is, but I don't really know how it works, and maybe examples of popular ones...? Although I know command line programming is the bare fundamentals, I think it'd be fun messing around with a GUI. Although I have around 3 million other questions, I'll save them :D

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• Searching For a Desktop Security Software to harden Windows machines, anybody?

  - by MosheH

  I'm a network administrator of a small/medium network. I'm looking for a software (Free or Not) which can harden Windows Computers (XP And Win7) for the propose of hardening standalone desktop computers (not in domain network). Note: The computers are completely isolated (standalone), so i can't use active directory group policy. moreover, there are too many restriction that i need to apply, so it is not particle to set it up manual (one by one). Basically what I’m looking for is a software that can restrict and disable access for specific user accounts on the system. For Example: User john can only open one application and nothing else -- He don’t see no icon on the desktop or start menu, except for one or two applications which i want to allow. He can't Right click on the desktop, the task-bar icons are not shown, there is no folder options, etc... User marry can open a specific application and copy data to one folder on D drive. User Dan, have access to all drives but cannot install software, and so on... So far ,I've found only the following solutions, but they all seems to miss one or more feature: Desktop restriction Software 1. Faronics WINSelect The application seems to answer most of our needs except one feature which is very important to us but seems to be missing from WINSelect, which is "restriction per profile". WINSelect only allow to set up restrictions which are applied system-wide. If I have multiple user accounts on the system and want to apply different restrictions for each user, I cant. Deskman (No Restriction per user)- Same thing, no restriction per profile. Desktop Security Rx - not relevant, No Win7 Support. The only software that I've found which is offering a restriction per profile is " 1st Security Agent ". but its GUI is very complicated and not very intuitive. It's worth to mention that I'm not looking for "Internet Kiosk software" although they share some features with the one I need. All I need is a software (like http://www.faronics.com/standard/winselect/) that is offering a way to restrict Windows user interface. So if anybody know an Hardening software which allows to set-up user restrictions on Windows systems, It will be a big, big, big help for me! Thanks to you all

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• Simple NAT router for ESX

  - by Evan M.

  Hi Guys, I'm looking for a simple virtual appliance that I can deploy to my ESX environment to use as a virtual NAT router / firewall to create an isolated network that I can easily give internet access too. Basic setup: ESX Host, has 2 vswitches configured: 1 is connected to the physical LAN, the other is isolated. I need an appliance that I can add 2 vNICs to, and attach one to the isolated vSwitch, the other to the LAN, to give the isolated network outbound access (so it can reach the internet). Anyone have an appliance that I can setup quickly to do so? Thanks.

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• Putting a Windows DC, Exchange in a DMZ

  - by blsub6

  I have one guy at my company telling me that I should put FF:TMG in between my main Internet-facing firewall (Cisco 5510) and put my Exchange server and DC on the internal network. I have another guy telling me that I should put the Exchange server and DC in a DMZ I don't particularly like the idea of having my mailboxes and DC's usernames/passwords in a DMZ and I think that Windows authentication would require me opening up so many ports between my DMZ and my internal network that it would be a moot point to have it out there anyways. What are some thoughts? How do you have it set up?

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• Sudden loss of Wi-Fi connectivity on OS X

  - by GJ.

  Occasionally while I work, without any special provocation, I lose connectivity via Wi-Fi. Other devices connected to the same wifi network have no interruption, and the problem gets resolved once I reboot my MacBook Air, so it's definitely a local problem. Observations: The Wi-Fi symbol in the menu indicates that I'm still connected, but apps can't actually connect neither to the Internet nor to other devices in the LAN. I can't connect to an alternate Wi-Fi network (e.g. Wi-Fi tethering via iPhone). I can connect to the Internet via iPhone USB tethering but this seems to only work some of the time. Only a reboot solves the problem but a regular restart gets stuck on a grey screen with rotating wheel (after all applications have closed) and I have to do a hard reset. How should I go about troubleshooting this? It used to happen very rarely but now is becoming more frequent (approaching once every 2-3 days on average).

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• What is the best toolkit for writing long technical texts?

  - by thr

  I'm looking for a toolkit in the form of one or a couple of applications that can be used to write long technical texts (such as an introduction to a programming language). What applications (or combination of) are suitable for this? How should said applications be setup (for example how would one setup MS Word to best fit writing a technical text)? How do you deal with source code, syntax coloring and formatting? In the case of it being several applications, how do you interact between them?

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• How to synchronize users, passwords, hosts, etc without NIS

  - by joshxdr

  I am administering a very small solaris 2.6 network with 4 boxes total. Is it possible to use scp or similar to replace NIS for synchronizing users, groups, hosts, etc? This network is only a small part of my job and I don't want to spend too much time on it, and I am worried the setup and maintenence of NIS will not pay off. I need it to behave like a proper multi-user system, when a user logs into any machine, the users, passwords, hosts, etc. are always the same. Is there an easy way to do this with scp? Right now I copy /etc/passwd from one box to another with scp, but sometimes I make mistakes or forget a step, and scp inside of shell scripts don't seem to works so well since they require password authentication. Any recommendations would be welcome.

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• Windows server 2003 mapping home drive wrong

  - by Sandman2010

  hey all, first question... we have around 30 servers in an Active Directory environment with 600 student computers and 100 staff desktops with XP SP2/3, the win server 2003 has the staff home drives on a NAS and in the last few days after some server updates is now mapping home drives to the \servername\home instead of \severname\home\%username%, its simple to re map the network drive but is annoying. we dont use login script to map home drive but use a VB script for other network drives and if we add the home drive mapping to that it works, but shouldnt the profile option in users AD account map that correctly? which do you all recommend, AD profile mapping or VB Script mapping Home drives? thanks Steven

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• Cannot Join a Domain on VM

  - by arvind0007

  Hi Guys. I have installed Windows 2003 server R2 on a VM. This VM is running on Windows XP PRO. When i try to make this XP Pro PC join the domain on the VM it tries to locate the server and gives me the following error message " The specified network name is no longer available", despite the fact that i can still see this domain on my network. can anyone help with this please. This is the very first time i am trying connecting a client to a VM server so hope am not doing anything wrong.. thanks

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• nodejs server hanging from time to time

  - by Johann Philipp Strathausen

  I have a node server (0.6.6) running an Express application, along with Mongoose and s3, on an Ubuntu 11.04 machine. Several times per hour, the server is hanging. That means that the application is working fine, I see the express loggings, and then all of a sudden the server stops responding. No errors, no traces, no loggings, and strangely enough the browser won't show the request even in the network debugging window. From any machine in the local network it's the same behaviour. I restart the server and it's okay again for several minutes, then again starts to hang, everytime while doing something different. The same application on Amazon on the same Ubuntu version works fine and never hangs. I know all this is kind of vague, but I don't know where to start. Has any of you seen something like this before? Any idea?

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• How to increase Remote Desktop resolution?

  - by BugAlert

  I'm using Windows 7 on a PC and connect to it via Remote Desktop Connection for Mac by MS, using a Mac. On the Mac, I have a 27" Display with 2560 x 1440 px resolution. The PC has a high performance graphics card (one of those that needs an additional power supply). Both machines are connected via network cable to a router. So network should be insanely fast. However, the max resolution I can get is 1400 x 1050. The PC just has a old and bad 21" monitor connected to it. How can I increase the resolution to 2560 x 1440 to work fullscreen with the Apple LED Cinema Display via Remote Desktop? Maybe I shouldn't even ask, because I already experience some lag at the low resolution of 1400 x 1050. But I guess this can be resolved as well?

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• How to set my Ubuntu account to super user at all times?

  - by iaddesign

  I have the latest Ubuntu installed and I'll be the only one using it off the network. My question is: how can I make myself super user at all times? Because when I try to delete a file it says I don't have privileges to do so. I know you are going to say it's a security risk but I'm off the network and want to learn all that I can. I don't want to delete the files through the terminal but want to do it through the user interface/explorer. I've installed LAMP and can't copy my site to the www directory. I've tried to remove the preinstalled index file and it won't let me.

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• VLC RTP Streaming in FC12

  - by Matt D

  I'm trying to get VLC to work streaming RTP audio/video over my office network. The goal is multicast a/v streaming. In all test cases, we are streaming from VLC to VLC. I am able to stream from Windows to Windows, and from Fedora to Windows, but not from Windows to Fedora. Additionally, I am unable to receive a LOCAL stream from one instance of VLC to another, within Fedora. I don't see any reason why this would be. The buffer indicator (where the elapsed/total time is normally displayed) never shows any connectivity, so it would appear to be a network problem, but since I am able to stream from Fedora to Windows (same IP, same port) I thought it would be something else. Does anyone know of a solution to this issue?

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• Instructions to setup domain controller

  - by Robert Koritnik

  Where could I get best step by step instructions (with some simple explanations) how to setup domain controller on Windows Server 2008 R2 Server Core? I don't know what do I need? Do I need DNS as well and AD and so on and so forth. I don't know enough about these things, but I need to set them up to prepare development environment. I would also like to know how to configure firewall on DC machine, to make it visible on other machines because I've setup DC somehow but I can't connect to it... This is my HW config: Linksys internet router with DHCP my dev machine is Windows 7 my DC machine is a VM in my dev machine my dev machine has a network adapter to linksys and a virtual adapter to DC DC machine has two network adapters: one to linksys (to be inetrnet connected) and one to host (my dev Win7 machine)

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• Samba as a PDC and offline authentication

  - by Aimé Barteaux

  Say I have a Windows laptop which has been connected to a domain. The domain has a Samba server as a PDC. Now say that I move the laptop outside of the network (the network is completely inaccessible). Will I be able to logon into accounts I have accessed before on the laptop (through GINA)? Update: Looking at the smb.comf documentation I noticed the setting winbind offline logon: This parameter is designed to control whether Winbind should allow to login with the pam_winbind module using Cached Credentials. If enabled, winbindd will store user credentials from successful logins encrypted in a local cache.. To me it looks like this solves the issue but can anyone else confirm it and/or point out if any additional values need to be set?

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• Can only access asp.net app on localhost

  - by Kevin Donn

  I'm trying to get an asp.net application up on IIS on a Windows Server 2008 machine. I can hit the app from localhost, no problem. But I can't access the app using the server's domain name either locally or from another machine on the network. But here's the odd part. I can access a normal file on IIS using the domain name, both from a browser running on the server and from a browser running on another machine on the network. Here's a synopsis ("http" converted to "htp" below because I don't have enough points to have all these links in my message): From IE on the server itself: works htp://localhost/foo.htm works htp://localhost/App works htp://test.foo.com/foo.htm dead htp://test.foo.com/App From IE on another machine (inside or outside my subnet): works htp://test.foo.com/foo.htm dead htp://test.foo.com/App And when I say "dead" I mean the request times out. Any ideas?

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• How anti-virus on the host machne affects performance of virtual machines?

  - by Ladislav Mrnka

  I'm diagnosing some issue with Oracle virtual box where virtual machine sometimes perform terribly slow (much slower then notebook with worse configuration): Notebook i7 (2 cores with HT = 4 logical CPUs), 4GB RAM, 5400 rpm disk, Win 7 64bit Virtual machine (Oracle Virtual Box) Host: i7 (4 cores with HT = 8 logical CPUs, 12 GB RAM, system runs from SSD, virtual machine from 7200 rpm disk, Win 7 64bit) Virtual machine: 4 cores assigned, 8 GB RAM assigned, Win 2008 R2 Enterprise (64 bit) Virtual machine uses bridge to separate network interface (machine has two) VPN for network communication No other virtual machine runs on the host Host has installed ESET Smart Security All SW is updated with last version. My question is if anti-virus on the host machine can somehow affect performance of the virtual machine and if so how can I turn it off without turning the anti-virus itself?

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• Where do Outlook folders go when moved?

  - by balexandre

  I have an account with external user mailboxes opened and accidentally I have moved a folder and now I can't find it anywhere. Action: I clicked on a folder and dragged it into another one. Result: Can't find the moved folder anywhere The above picture is the folders I currently have from my Outlook 2010 (via Exchange 2010), under an AD Network. Where can I (me, having admin rights over the network) retrieve that missing folder again? Attempts: The original and the one folder I need was accidentally moved, but I have created a poi folder and tried the same way, and I got the same result... the folder went missing. I also tried to reboot the client machine and access the same mailbox from OWA ... no luck on both attempts :( Any ideas on how I can retrieve the missing folder and its emails again?

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• Windows 7 PC refuses to join domain

  - by Alex

  So, we're wiping clean all PCs at our office and migrating them to a new server cluster and a new domain. Last night I tested on PC and it mostly worked except it refuses to join to the domain. Now, our domain is named like EXAMPLE.COM. When I just type EXAMPLE the PC can't find the domain controller, even though I can ping it find. If I type EXAMPLE.COM it seems to work. How can I get it to work with just EXAMPLE? That's how I got all the new servers int he cluster to work (about 20 of them) and I haven't had any issues... The only difference between the Windows 7 PC(s) and the servers is that the clients will be on a 10.0.3.X network where as the servers are on a 10.0.1.X network. Oh, the domain controller and all the other servers are Windows Server 2008 R2. Suggestions will be highly appreciated!

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• Netgear VPN can't access specific server

  - by Critologist

  I have a Netgear FVS318N configured with a VPN. I'm trying to access my call recorder with the provided software from another office. I've already setup the VPN connection, and it works. I can connect and ping the remote router and a few other things on the network. However, I can't ping or connect to my call recorder. If I move outside of the office network (i.e. connect directly to the cable modem or via a mobile hotspot), I can connect and ping the call recorder just fine. The office has a simple Linksys WRT54G router and is using AT&T Uverse. The remote location is using Charter Cable with a Netgear FVS318N. Has anyone ever encountered anything like this before? I've setup an identical VPN previously for a different client using similar hardware and never encountered this. Thanks in advance!

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• Could anyone suggest me some image manipulation techniques to be added to my image viewer??

  - by avi

  Hello, I'm trying to develop a small image viewer just as an exercise to sharpen my programming skills. So far , all the features that I could think of adding to it are zooming in and out, inverting the colors of the image and resizing. Could anyone suggest me a few more features?? You are also welcome to suggest anything which has not been implemented yet. I would like to take it as a learning challenge. Thanks.

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• Is there a simple isometric graphical game engine (using vectors?) that could be used for a (multiplayer) crafting/farming game? [closed]

  - by Renier Wijnen

  Possible Duplicate: Good, free isometric game engine? With little game development experience (albeit having graphical skills and some programming knowledge) a group currently working on a game used to explain permaculture through interaction would like to create a simple concept game. Is there a specific engine or set of tools we could used to achieve this? Being able to make it an (online) multiplayer game would be much preferred. Thank you in advance for your input.

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• Avoiding spam filters on my CentOS 5.5 64bit server?

  - by Andrew Fashion

  I run a social network on my web server, with about 15,000 members right now. My administration section let's me Mass Email all my users. Currently it uses the built in PHP mail function. What is the best way to congfigure my server to bypass spam? Can I install anything on the server? Or should I just make the social network use SMTP? The admin panel lets me choose SMTP or built-in mail function. I'm not to familiar with mailing from servers, as I usually use Aweber for my mailing, but I cannot use Aweber for this as they will not let me just import 15,000 emails. Let me know, thanks.

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