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• iptables: separate clients from each other

  - by Florian Lagg

  Hello, is there a way to separate clients in a subnet so that they cannot reach each other? The infrastructure currently looks like this: 192.168.0.1/24 Gateway, a CentOS box with iptables. 192.168.0.10-20 Some clients which may reach each other 192.168.0.30 A single client which should not be able to reach the hosts 192.168.0.10-20 should be able to reach the gateway and the internet I don't know if it is possible, maybe you could give me your ideas how it could be done. I cannot influence the machine 192.168.0.30 because it is a virtual machine I want to rent to someone. Thanks.

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• Script/scheduled task to clean up Dowloads folder (Windows 7)?

  - by Andrew

  My downloads folder is my primary connection to the internet (and thus the world), and has rapidly become a virtual junk drawer. I imagine I'm not alone here. What I'd like to do is have some sort of a script that -creates a new folder (named YYYY_MM Archive so it sorts nicely) -takes everything* inside of the Downloads folder (for the current user) -moves it to the new folder and have this run once/month. *(excluding previous archives) This strikes me as the type of thing Saw some answers on related questions that seemed to suggest that this is an eminently doable task in PowerShell. Is it? I'm on Windows 7 Enterprise.

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• I need to make Windows 7 STOP disabling the wifi adapter when the wired LAN is connected

  - by Escobar Ceaser

  This is a Dell Latitude E6430. There is a setting in the bios to control this behavior and I have DISABLED it but it still happens. I am also running the latest bios. When I plug in a network cable the wifi adapter becomes disabled. I need it to stay enabled. What else could be making this happen? EDIT: The reason I need to do this is because with NETSH WLAN commands you can create a wifi hotspot by sharing the internet connection on the wired adapter and broadcasting a ssid on the virtual wifi nic. I do this all the time but it's not working on this laptop. I'm wondering if it's a network security thing where I am. I'm going to try from my hotel tonight and report back.

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• Straight-forward to Virtualise with XEN or KVM on IBM Server System x3650 M4 791562G?

  - by ChrisZZ

  I want to built a virtualised Server Environment using XEN or KVM. The virtual machines should be purely debian systems - so XEN or KVM should be a sane choice. Now while buying servers, I am confronted with the fact, that the vendors obviously only support commercial solution. I think, on a good server, one should be able to install uncommercial software as well - but of course sometimes systems have hardware, that requires drivers, that are not found in the OS Community. So I am asked the question: Is it straight-forward to use Debian with IBM Server System x3650 M4 791562G with Debian - or even virtualising the IBM Server System x3650 M4 791562G using XEN or KVM. I am sure there will always be a way to achieve this goal - but this way might have a high milage - so I am not asking, whether this is theoretical possible, but whether this should be straight-forward and practically easy to do, no major headaches to be expected.

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• Mount a remote Linux hard drive as another Windows 7 partition during boot?

  - by zhuanyi

  I would like to mount a hard drive on a remote computer (running on CentOS 6) as a Windows drive so that I can install programs to that drive. The primary hard drive for my Windows machine (which is at home) is pretty small, I have a Linux server sitting in a remote data center with a much larger hard drive and allow me to install more stuff. I know most of you are going to say Samba, unfortunately the biggest problem for me in this case is that I can not mount Samba as a network share unless I start OpenVPN or SSH tunneling first, which is not good for my case because I will install some startup programs to the remote drive as well. Therefore, the remote drive has to be ready and work just like another drive BEFORE any of the startup programs start to load. Is that possible? My home PC has Windows 7 Professional 32 bit installed and the remote server is a Xen virtual server running on CentOS 6. I have admin/root permissions for both. Thanks a lot!

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• Command line, determine 64 or 32 bit?

  - by svnpenn

  I need to reinstall Windows on a laptop. I have the product key (its on the laptop), and I know it is Windows 7 Home Premium. I need a way to determine if 64-bit or 32-bit Windows is installed, so that I can download the correct one from Microsoft. The computer is messed up so I do not have access to Windows to check it with systeminfo. I took out the hard drive and hooked it to another computer, but when I run systeminfo it just gives information for the host computer, I did not see a way to change this.

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• Application deployment with Puppet

  - by michaeltwofish

  I'm new to Puppet and while I've been using *nix systems for many years, I've never worked as a sysadmin or in ops. I'm currently writing Puppet manifests for hosting a set of (PHP/MySQL/MongoDB, code in git) web applications. Clearly Puppet needs to have some knowledge of the actual applications because I'll set up a virtual host for each one, but I'm not sure whether Puppet should be managing things like code deployment and database creation. Is Puppet an appropriate tool for application deployment? If not, can you recommend a more appropriate tool?

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• Apache spawning one process a day, what causes it?

  - by xtrimsky

  I have a PHP server running, with cron jobs etc... And once a day (between midnight and 3am), apache spawns one process that never ends. The server is a virtual server, so in a couple of days it eats up the whole memory. Is there a way to figure out what is crashing ? What php script isn't finishing ? Or what url via apache was triggered ? I have tried looking on the access logs, errors logs, but didn't find anything unusual. Thank you

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• Port forwarding using IP Tables

  - by Darider

  I have a server with a LAN facing address of 192.168.5.100 (eth0) and another LAN facing address of 192.168.6.6 (eth1). On this server I have a Virtualbox instance of fedora running an apache webserver (on port 8080) with a bridged interface to eth1 on the host server with address of 192.168.6.7 Users on the 192.168.6.x network can access the Webserver on the Vbox instance (192.168.6.7) with no problems. My question is what kind of iptables entries or commands should be made/executed so as to allow for users on the 192.168.5.x network to access the webserver on the vbox instance. (I'm hoping their url can be something like: http://192.168.5.100:8080)

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• VMWare workstation: guest OS becomes sluggish after being idle for 12+ hours?

  - by GenEric35

  Hi, My VM becomes sluggish after a few hours(~12 hours or so) of being idle, there is no impact on the host, just the gueste. The guest OS becomes sluggish. It has lots of RAM, runs on Raid 0, quad core i5 750, everything is defragged, but the only way I found to keep it's responsiveness optimal is to shutdown(dumps the memory) and the start; a restart of the guest OS doesnt dump the memory so I need to be able to do a stop of the VM, and then a start. Coming from Hyper-V I had to learn VMWare and after a few months of fine tunning it I'm quite impressed with how configurable VMWare is. This is the only small issue I haven't been able to fix, has anyone encountered this?

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• New Servers Active Directory and Exchange

  - by user3164638

  I have 3 Dell PowerEdge server, each with 2 quad-core processors. I am going to bring this office out of the stone-age network (P2P, share files on a flash drive, emails through Google, etc) and set up Active Directory and Exchange 2013. Our needs are not that great at the moment - our staff consists of approximately 40 people, and our network may eventually be managed by an external company. We need only one domain for our emails (though we may serve emails for a few other partners domains as well). I was thinking of setting something up like this: Server 1: Primary DC. Active Directory and Exchange on separate virtual machines. Server 2: Redundant of server 1. Server 3: Shared resources, storage, backups, etc. How would you utilize 3 servers for an Active Directory / Exchange setup for a small/medium office? We do have plans to grow, so my solution must be scalable, though I'm not sure that I want to split permissions, though I'd consider it if that was something that could be changed on down the road.

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• How much does SQL Server Web Edition cost? + other related questions

  - by Goma

  Hello. I visited Microsoft pricing page about SQL Server databases, but it was not that clear for me. I want to know the exact cost of SQL Server Web Edition. Furthermore, I would like to know how can I get it if I am with VPS hosting? Should I install it by myself or will they install it for me? And finally, is there a web host that provide SQL Server Web edition so I pay for them directly with the hosting package?

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• Offer me an ASP.NET & a SQL Server 2008 server specifications for about 2000 concurrent users, please.

  - by amkh

  We have a web application project wich will be created using ASP.NET 4.0, Entity Framework, and SQL Sever 2008 R2. To meet the needs, suppose a normal page of this application that has a query which it takes 10 miliseconds to response on a Core2 Quad @ 2.8GHz proccessor with 2x2GB of DDR3 Ram (EntityFramework overheads are considered). And we will have about 2000 concurrent user at peek times. So, what is the best recommended specifications (CPU/RAM/RAID/...) for the server which will be host this application? -- Or -- How can I calculate that?

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• I can't connect to my WAMP server from a client on the same network

  - by F4r-20

  Usually I would manually set up Apache and PHP but this time I thought I would go for the WAMP alternative. I've set up WAMP and it's working perfectly fine on the host machine. If I try and access the WAMP server from another machine on the same network (same subnet too: 192.168.1.*) I get this message: Forbidden You don't have permission to access / on this server. I have been online and gone through steps. I have changed Allow from 127.0.0.1 to Allow from all and it's still not working. Is there anything else I can try? Thanks.

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• Site on IIS 7.5 accessible via SSL on server, but not from local network

  - by bnieland

  I have a site set up on IIS 7.5. I added the following binding... type: https Host Name: [Blank] Port: 443 IP Address: 192.168.1.6 Binding Information: [Blank] I can access the site via https://192.168.1.6 from the server itself. When I try to access the site from another machine (193.168.1.4) on the same sub-net via https://192.168.1.6 I get no response. http://192.168.1.6 returns the site as expected. I have used wireshark to examine the packets on the server, the first of which I have included as an image. There were two other packets, very similar to this. There was no response from the server. Any Ideas?

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• How to remove .htaccess virus? [closed]

  - by bleepingcrows

  Possible Duplicate: My server's been hacked EMERGENCY First time posting so bear with me please! My friend's site has been hacked and the .htaccess file (which I really know nothing about) has been injected with a malicious redirect that forces search engines to the see the site as a "harmful website." If you look at the .htaccess file you can see it's Russian or at least ends in .ru. Seeing as I know very little about this stuff, I simply tried to restore the good .htaccess file back with his host. This doesn't work as the virus just recreates the infected .htaccess file. When I searched through the rest of his directories, I can see the same bad .htaccess file in most of the folders. I can't seem to help him get rid of this virus.

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• Make the recycle bin of the SSD on a RAID0 drive?

  - by Rolnik

  I don't know about you folks, but I hate the idea of junk sitting on my tiny 30GB SSD. Any way to designate another drive to be the host of the Recycle Bin for items formerly on the SSD? Basically, I need to know how to make a lower-priority drive receive the recycled materials from the 'main' drive, which happens to be short on space. The best thing I can think of is a batch file that a) syncs 'recycle' to another drive; and b) empties the recycle bin. ... but that's too much work for me.

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• Migrating a running production server to Xen, unmodified as a second HDD?

  - by DaveCol

  I have a production server which I am looking to virtualize via XEN. For this purpose I have purchased a new Sata HDD, in which I have promptly installed CentOS 5.5 x64 with XEN server installed. Now I have two HDD: /dev/sda1 running as host with Xen Server Installed; and /dev/sda2 which is the HDD where the original server has installed. Is it posible to use /dev/sda2 to work as GuestOS in a xen server? Would I have to modify its kernel? Thank you for any input

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• VMware Workstation 7 build 203739 - Capture Movie Mouse Pointer Not Visible

  - by BMIVM

  Hi, I have noticed that whenever I create a Capture Movie, the movie is fine but the mouse pointer is not visible at all. The clicks are on buttons file menus are executed but is hard for a viewer of the capturre movie session to follow the recording smoothly. This was not a problem in previous versions of WorkStation. Is this a bug or is there a setting I can set to see the mouse pointer? Note: VM Tools are installed, Host is Vista Ultimate Edtion SP1, x64 and the guest is a Win XP SP2. Thanks in advance for your help.

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• Should the hostname of my VPS point to the dedi IP of my Domain or to to a shared one used for new account creation?

  - by thomas

  I leased a VPS which I want to use to sell shared hosting. 3 IPs - I call them A, B and C here for simplicity. Actual setup is: A=NS1.mydomain.com; host.mydomain.com and is used to set-up new accounts in shared environment B=NS2.mydomain.com C=dedicated IP for mydomain.com (SSL secured) The more I read about DNS, the more I get confused; thus my question: Is this configuration "Good Practice", especially the hostname pointing to A rather than to C? And what would be a better alternative?

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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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• Is it necessary to change the default users and groups in VMware esxi 4.0 in order to have a secure

  - by Teevus

  By default esxi creates a number of users and groups including: daemon nfsnobody root nobody vimuser dcui How secure is this default security setup? Besides changing the root password, is it advisable to modify the default users and groups? E.g. does esxi use default passwords for the accounts or anything else that could be exploited by malicious users? My scenario is very basic and I don't require any custom users or groups as only sysadmins will ever need to administer the virtual infrastructure, and they can do so using the root account. Thanks

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• Can't connect to service on ubuntu?

  - by user36914

  I have a service i just installed on a ubuntu workstation machine. Say its running under port 511. I can connect locally : telnet localhost 511 When i try to connect from a remote machine it fails telnet 192.168.0.1 511 Whats wierd is i tried to connect locally using the ip address and i get the following error: "Unable to connect to remote host: Connection Refused" I checked the status of the firewall: sudo ufw status and get back "status:inactive" So does anyone know why i can't connect remotely since the firewall is disabled and why can't i connect locally using its ip address. I don't know if this matters but its running under esxi.

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• cannot using internet in VMWare

  - by user66247

  I am using VMware Workstation version 7 on Ubuntu 10.10. I installed Windows XP service pack 3 for guest os. Within VMWare, I am using bridge connection that I assigned static IP address to be able to ping host IP address but I cannot ping default router gateway. I also tried to command "/etc/init.d/vmware start" on terminal. All tasks are able to start successfully except "VM communication interface socket family" I am not sure that how to setup network for my VMWare by using wireless. Thanks in advance.

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• Simple Central Storage for HA mail server

  - by jtnire

  Hi Everyone, I will have 2 Postfix servers. One will be a backup of the other. What is the easiest method to provide central storage to both of these boxes? My infrastructure is very simple: Just a lot of Xen hosts, so there is no SAN or anything. Each Xen host does have RAID1 though. I don't mind mounting NFS shares on each of those mail servers, as long as the NFS server wasn't a single point of failure. Is there such a thing as redundant NFS? Any help would be appreciated Thanks

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