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  • How to configure Amazon Security Groups to achieve multi-tier architecture?

    - by ks78
    What is the preferred way to configure Amazon Security Groups to achieve a multi-tier architecture? Each of my instances has its own Security Group, which I only want to use for rules specific to an instance. I'd like to keep any rules which apply to multiple instances in a separate Security Group, which can then be assigned to instance Security Groups as necessary. As an example, I've setup a group called "admin", which allows administrative access from my IP. I added the "admin" group as the source to each of my instance security groups. However, I still can't access the instances from my IP without adding the rules directly to the instance's group. Am I missing something? Although it seems a multi-tier security architecture should be possible, it doesn't seem to be working.

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  • Windows 7 connect to Lion file sharing

    - by McKvack
    Trying to access my Mac from a Windows 7 computer, I fail with the infamous error 86 incorrect password. Now this appears to be a well-known problem with countless threads on the internet giving as many "solutions" as there are discussion threads about it (mostly ranging from installing third-party commercial samba servers, to switching to some other protocol, to compiling a plain-vanilla Samba installation - the latter which I will probably do when I give up this :) ) I am stubborn, and I believe there must be some problem here that can be solved or worked around, but there is surprisingly little detail about this problem. It appears to have something to do with a mismatch of authentication methods. Trying to run samba in debug mode: sudo /usr/sbin/smbd -debug -stdout gets me this output when trying to access it from Win 7 ... smb1_dispatch_one [smb_dispatch.cpp:377] dispatching SMB_COM_SESSION_SETUP_ANDX smb1_dispatch_session_setup [session_setup.cpp:261] FIXME erase existing sessions log_gss_error [gssapi_mechanism.cpp:97] gssapi: gss-code: Miscellaneous failure (see text) log_gss_error [gssapi_mechanism.cpp:113] gssapi: mech-code: unknown mech-code 22 for mech unknown What is the problem here, and how do I fix it?

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  • how to stream audio and video files, but use any media player on Windows (without using Windows file

    - by RamyenHead
    I want to access and play media files on machine S (Windows XP) from machine C (Windows XP). Using Windows File Sharing ("share this folder" stuff), if it works, I would share the folder containing media files on machine S, and I would be able to play media files, sitting in front of C, using any media player I want. Windows somehow ensures that the remote files behave like local files. But Windows file sharing won't work for me, is there any alternative? If two machines were both Linux, I would install an SSH server on S and use Nautilus from C to access and play media files. The reason why I can't use Windows file sharing is, my campus use two different subnets, I have S and C on different subnets and it seems that the firewall governing the whole network in campus doesn't allow file sharing between different subnets. I tried changing Windows Firewall settings on S to allow C in, it still wouldn't work, so it must be the other firewall.

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  • Folder Redirection won't load on Windows 7 Machine in Windows 2008 R2 Network

    - by leeand00
    Okay so redirected profiles don't load exactly, but the computer is joined to the network and it won't display any of the users files on their desktop that are in their redirected profile. I know this because we have a Terminal Server and when the user logs in there, her files appear. I checked the users' profile in Active Directory Users and Computers and compared it with a working users profile. When that didn't turn up any differences, I looked at her computer and found that on the Dial-in tab the Network Access Permission wasn't set to Control access through NPS Network Policy like it was on the other machines on the network; so I selected it, ran gpupdate /force on her machine and rebooted. This did not fix the issue. Is there anything else that could be preventing the redirected files on the users desktop from showing up when the user logs in?

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  • SQL 2008 publisher -> SQL 2000 subscriber: Is a pull subscription possible for merge replication?

    - by Brian Dunzweiler
    I am trying to synchronize a SQL 2000 SP4 subscriber to a SQL 2008 publisher via a merge pull subscription. When the subscriber tries to run the merge agent, it fails the following error: The process could not connect to Distributor 'OH05DBS002\SAM_SSG_2008'. SQL Server does not exist or access denied. Has anyone had success with this setup? I was able to create and synchronize a push subscription so I know that communication works between the two, at least from 2008-2000. The lack of communication from 2000-2008 also affects the ability to create a linked server on the SQL 2000 subscriber. One other tidbit - I did install the SQL 2008 native client on the the 2000 box but it didn't help either. Before anyone asks, I can't upgrade the subscriber as it still needs to support replication between MS Access 2003. Yeah, I know. :) TIA, Brian

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  • symbolic link and filezilla over sftp

    - by Doc
    I'm pretty new to debian, and I'm trying to set up a server. I created a user which can only access to his folder /home/username (and its subdirectory). Now I want to use that user for the webserver I set up, and I gave him access to /var/www but I can't see /var/www through sftp and i did a symbolic link like this root@server:/home/username# ln -s /var/www www root@server:/home/username# cd www root@server:/home/username/www# chown username:username * now, with filezilla, I can see www folder like this - but when I try to open it I get this - Where am I going wrong? sorry for my awful english, i hope you can understand my problem...

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  • Triple Boot - With storage partition

    - by art
    I'm new to the multi-boot world, as i used to rely on virtualizing for running linux. Recently i moved to Dual booting Windows 7 and Ubuntu, with a storage partition for all my files where both operating systems could access them. Is it possible, to have 1 partition for 7, another for XP, another for Ubuntu, and a separate partition where the OS's can access my files? so 4 partitions on my hdd. and if there's a better way to go about this (or if its not possible), please let me know! thanks

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  • Connection string during installation

    - by anon2009
    Hi, I've been convinced to use windows setup files(msi) for the installation of my new windows forms application after I asked a question here and got some excellent answers (thank you all): http://serverfault.com/questions/97039/net-application-deployment Now i have a different question: My application will need to access a SQL Server to provide users with data, which means that the connection string must be stored in the client's app.config file. How should I handle this? During installation, the user enters the connection string to that database? How they get the connection string? In an email from the admin? What if the admin wants to use SQL authentication and need to put the user info at the connection string? So you know, the app will be sold via the internet, so I don't have any access to the admins or the network. Any suggestions? Thanks in advanced.

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  • Web service not accessible from behind corporates firewalls - how come?

    - by Niro
    We run a Saas serving a widget which is embedded in customer websites. The service include static javascript code hosted on amazon S3 and dynamic part hosted on EC2 with Scalr (using scalr name servers). We received some feedback from users behind corporate firewalls that they cant access our service (while they can access the sites including the widget). This does not make sense to me since the service is using normal http calls on port 80 and our URL is quite new without any reason to be banned by firewalls. My questions are: 1. Why is the service is not accessible and what can I do about it? 2. Is it possible that one of the following is blocked by corporate firewalls: Amazon s3, the dynamic IP address provided by amazon, Scalr name servers. Any other possible reasons, way to check them and remedies for this? Thanks!

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  • Turn Excel spreadsheet into a formula

    - by ?????? ??????????
    I have an Excel spreadsheet that has a complex computation that is not trivial to turn into a macro or a single-cell formula. The spreadsheet has a about 10 different inputs (values a human enters in different cells of the spreadsheet) and then it outputs 5 independent calculations (in different 5 cells) based on that input. There calculation is using some pre-entered data in the spreadsheet (about 100 different constants) and doing some look-ups on them. Now I would like to use this whole spreadsheet as a formula on a different spreadsheet to calculate a set of input values and produce the corresponding set of output values. Imagine this as creating different table with 10 columns for the input variables and 5 columns for the outputs, then copying each input into the other spreadsheet and copying back the output in the results table. For instance: - A1, A2, A3,... A10 are cells where someone enters values - through a series of calculations B1, B2, B3, B4 and B5 are updated with some formulas Can I use the whole series of calculations from A1..A10 into B1..B5 without creating one massive huge formula or a VBA macro? I want to have a set of input values in 100 rows from A100, B100, C100,... J100 onward. Then do some Excel magic that will: 1. copy the values from A100...J100 into A1 to A10 2. wait for the result to appear in B1 to B5 3. copy the values from B1 to B5 into K100 to O100 4. repeat steps 1 to 3 for all rows from 100 to 150

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  • My computer is listed twice in the Network view; network shares are not accessible

    - by romkyns
    I have a couple of network shares set up on my Win7 machine. They've been in constant use, from that same machine on which they're set up. One morning they just randomly stopped working: When I went looking for what was wrong, I noticed that I also had my PC listed twice in the Network view in Explorer: "Sirius" is the name of the PC on which these screenshots were taken. I may have installed some windows updates around the time this happened. I have since tried rebooting and installing all the latest updates, to no avail. I've also removed the share in question and re-added it, making sure I give all rights to everyone. I'm an administrator on this machine, but I can't access the administrative shares (\\SIRIUS\c$) either, with the same message. I can access \\localhost\AcronisImages and \\localhost\c$, and I can ping sirius. Any ideas?

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  • Remote location looses connectivity

    - by user24559
    I have a remote location that has constant internet access using DSL. The remote location only has three Linksys cameras that use the internet access with a router. There is no computer on the network. The router is configured to use the DYN.org service to keep the IP address updated if the internet provider assigns a new ip address. The problem I am having is the router after a period of time stops responding to incoming ping requests and the cameras are shown offline. However, if I keep one of the cameras constantly streaming data then the connection to all the cameras works just fine all the time. How can I keep the router from appearing to be sleeping and not responding to incoming requests? The router is the Linksys WRT300N.

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  • What are some good methods to improve personal password management?

    - by danilo
    I want to improve my personal password management. I usually use secure passwords, but overuse them for too many different places. My questions: What methods do you use to create passwords, e.g. for different online sites/logins? What methods do you use to remember those passwords? Memory? Pen&Paper? Software storage? Is there some good way to store my passwords somewhere, so I can always have access to them when I need them (e.g. a webbased solution on my own server) but at the same way keep them away from unwanted access? Edit: Someone on another site mentioned http://passwordmaker.org/. Have you had any good or bad experiences with that software?

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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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  • Connecting to a VirtualBox machine from the host, using an ip address

    - by Doron
    Hello, In a macbook host, I run VirtualBox having a guest ubuntu server, with a NAT network setting. In the virtual machine application "Parallels", I would get on the host an IP address of the guest, to which I could later set hostnames and access it directly. However, I couldn't find a way to accomplish this using VirtualBox. The only solution VirtualBox has for me, is to set port forwarding, and access "localhost" with these ports. How can I have the desired behavior set up, without having to change to a bridged network settings, and expose my guest computer to the network my host computer is connected to ? Thanks.

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  • How to Confirm working of Nginx Caching Proxy

    - by Mark
    I am having nginx on port 80 and apache on port 8080 on same server. I have configured nginx such that it act as reverse proxy(i am not sure whether its working or not) using this tutorial http://tumblr.intranation.com/post/766288369/using-nginx-reverse-proxy. steps i followed to verify proxy. opened same page on two different machines within an interval of 5 seconds. but in the apache access.log every request is showing 200 response code.Does that indicate that caching is not working? and nginx access.log is showing nothing.

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  • Machine account authentication on Radius server

    - by O.Shevchenko
    My workstation is under Linux. I have an Active Directory domain controller + Radius server on Windows 2008. I can verify user account 'radius-01' using 'radtest' tool: $ radtest -t pap radius-01 password123 195.234.133.32 1812 password123 Sending Access-Request of id 98 to 195.234.73.2 port 1812 User-Name = "radius-01" User-Password = "password123" NAS-IP-Address = 127.0.1.1 NAS-Port = 1812 rad_recv: Access-Accept packet from host 195.234.133.32 port 1812, id=98, length=84 Framed-MTU = 1344 Framed-Protocol = PPP Service-Type = Framed-User Class = 0x537004f00000013700010200ac1c0... I have joined my Linux PC to Active Directory domain ARB-HRK using Samba: [root@shev-arb]# net ads testjoin Join is OK I can dump machine password: [root@shev-arb]# tdbdump /var/lib/samba/private/secrets.tdb { key(34) = "SECRETS/MACHINE_PASSWORD/ARB-HRK" data(15) = "yGgXJsquRnpT0g\00" } How can i authenticate my machine account on Radius server? Do anybody know any tools for this, like: radtest shev-arb$ yGgXJsquRnpT0g 195.234.133.32 1812 password123 (this command fails)

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  • adding remote ssh printer as local printer

    - by guest
    I have SSH access to a remote host (FreeBSD) that has a printer set up. I do not have root access on that host or any other special user rights. Now I want to print directly from my laptop on that printer (Ubuntu 10.10). The problem is that I don't know how to "import" or whatever the the printer, as it needs authetification from my user account (print quota limitations). E-mailing me the files I want to print or scp them every time is a pain, ATM I pipe the PostScript output manually to a ssh command, but that's also a huge working overhead. E.g. when I want to print a foo.pdf pdftops '/path/to/foo.pdf' - | ssh user@remotehost 'lpr -P printername' So, does anyone know of a smooth way to shorten this procedure? Ideally I would just want to use a printername instead of the whole ssh command

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  • Security of BitLocker with no PIN from WinPE?

    - by Scott Bussinger
    Say you have a computer with the system drive encrypted by BitLocker and you're not using a PIN so the computer will boot up unattended. What happens if an attacker boots the system up into the Windows Preinstallation Environment? Will they have access to the encrypted drive? Does it change if you have a TPM vs. using only a USB startup key? What I'm trying to determine is whether the TPM / USB startup key is usable without booting from the original operating system. In other words, if you're using a USB startup key and the machine is rebooted normally then the data would still be protected unless an attacker was able to log in. But what if the hacker just boots the server into a Windows Preinstallation Environment with the USB startup key plugged in? Would they then have access to the data? Or would that require the recovery key? Ideally the recovery key would be required when booted like this, but I haven't seen this documented anywhere.

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  • Thoughts on Apache log file sizes?

    - by Nathan Long
    Do you place any limits on the size of Apache log files - access.log and error.log? Specifically, can you give: Reasons to limit log file sizes Disk space Any other? Reasons NOT to limit log file sizes Research into performance issues or security breaches Any other? Methods of doing so Cron job that periodically deletes the file, or the first N lines? Any other? Anything you might salvage before deleting For example, grep out how many times a file was downloaded before deleting the access logs I'd like get the thoughts of experienced sysadmins before I do anything. (Marking as community wiki since this may be a matter of opinion.)

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  • Convert VM running on Linux hypervisor to OVF/VMDK

    - by blade
    Hi, I have a bunch of VMs on a Linux hypervisor (cloudsigma.com to be precised). I want to convert these to deploy to an ESX hypervisor (opsource cloud server), but need to create an ovf with the vmdk. I don't have access to the hypervisor of either service but opsource allow me to import ovf/vmdk so this is possible. What tool can create an ovf (With vmdk) of a Windows OS? I am not sure if VCenter Converter would work as it requires access to the hypervisor, if I remember correctly. I am hoping for something like vhd2disk which will create a .vhd of the currently running, parent Windows OS on a system. Thanks

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  • Check availability of my websites

    - by DeChinees
    Hi, How can I check the availability of websites from hosted by company? Ping the server and checking if the services for IIS or Apache/Tomcat is not enough. I want to see if the sites are responsive, if I can login. My idea is to build a script using cURL to access the websites and parse for certain words. However using cURL to access a secure site (HTTPS://www.fleetagent.be) doesnt seem to work. cURL might not be the best tool! Any ideas how to check the availability of this website? Thanks in advance, Darrell

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  • Solaris 11.1 smb share pam.conf

    - by websta
    I would like to enable an SMB share on Solaris 11.1 x64 My steps: pkg install service/filesystem/smb svcadm enable -r smb/server echo "other password required pam_smb_passwd.so.1 nowarn" >> /etc/pam.conf useradd public smbadm enable-user public zfs set share=name=fs1,path=/rpool/fs1,prot=smb rpool/fs1 zfs set sharesmb=on rpool/fs1 passwd -r files public Step 8 failes: It is not possible to enter a password, output is: solaris passwd -r files public Please try again Please try again Permission denied If I uncomment the new line in pam.conf, it is possible to change the password. Nevertheless, it is not possible to access the share from Windows 7. The Solaris machine is reachable with ping. Access with another SMB enabled user is denied too.

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  • Encrypt remote linux server

    - by Margaret Thorpe
    One of my customers has requested that their web server is encrypted to prevent offline attacks to highly sensitive data contained in a mysql database and also /var/log. I have full root access to the dedicated server at a popular host. I am considering 3 options - FDE - This would be ideal, but with only remote access (no console) I imagine this would be very complex. Xen - installing XEN and moving their server within a XEN virtual machine and encrypting the VM - which seems easier to do remotely. Parition - encrypt the non-static partitions where the sensitive data resides e.g. /var /home etc. What would be the simplist approach that satisfies the requirements?

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