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  • Active Directory Permission Diag Tool

    - by Skit
    I'm trying to identify potential permission issues on areas of our AD tree. What I have in mind is something like SysInternals FileMon to monitor object access in Active Directory in real time. For example: Adding a computer to the domain. Is there anything like that in the wild? Is there a better way?

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  • Frequent and weird wifi disconnections

    - by Sidou
    How would you explain, troubleshoot (and solve) the following problem? Wifi ADSL modem router D-link 2640R installed in living room at about 1.8m height. Working fine, synchronising and getting/serving stable internet connection. First situation: -Laptop 01 in other end of the house, let's say in room01 southern to the living room, distant by about 15m. Getting stable signal of good to very good quality. No disconnection. -Laptop 02 in room02 opposite to room01 (5m West) which makes it almost at the same distance and direction from the router located 15m North. Getting stable signal of good to very good quality. No disconnection. Second situation: -Laptop 01 moved to room03 Northern to the living room (actually just 3m behind the wall where the router lies). Getting stable signal of excellent quality. No disconnection. -Laptop 02 still in room02 but now experiences frequent disconnections (actually almost impossible to get the Internet even though the signal level is still very good. Either no Internet with the wifi icon appearing connected to access point or no connection established at all which happens every 2 minutes and that means virtually no Internet at all as I can just get a timeframe of 1 minute or so to load any website or even get to the router's web based control panel. If Laptop 01 is completely shut down or its wifi adapters shut down or even still working but its wifi MAC address forbidden, then Laptop 02 has no problem at all. If Laptop 02 is moved to a nearer location to the router, in the living room for instance, then no connection problem occurs even if Laptop 01 is also connected. And also if we move back Laptop 01 to its original location (room 01), then no problem as well. I'm completely lost and don't know how to address this issue. I tried to change the Wifi channel and even tried the auto channel scan but that didn't solve it. I know that the problem is probably coming from Laptop 01 being in its new location or some sort of interference as the problem occurs only under the described condition but I have no idea how to solve it! I also scanned the neighborhood for wifi jam using InSSIDer, there are few other access points but they don't seem to affect the situation. Any ideas about the steps to follow or tools to use ?

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  • a couple of questions about proxy server,vpn & how they works

    - by Q8Y
    I have a couple of questions that are related to security. Correct me if i'm wrong :) If I want to request something (ex: visiting www.google.com): my computer will request that then it will to the ISP then to my ISP proxy server that will take the request and act as a middle man in this situation ask for the site (www.google.com) and retrieve it then the proxy will send it back to me. I know that its being done like that. So, my question is that, in this situation my ISP knows everything and what I did request, and the proxy server is set by default (when I ask for an internet subscription). So, if I use here another proxy (lets assume that is a highly anonymous and my ISP can't detect my IP address from it), would I visit my ISP and then from my ISP it will redirect me to the new proxy server that I provide? Will it know that there is someone using another proxy? Or will it go to another network rather than my ISP? Because I didn't get the view clearly. This question is related to the first one. When I use a VPN, I know that VPN provides for me a tunneling, encryption and much more features that a proxy can't. So my data is travelling securely and my ISP can't know what I'm doing. But my questions are: From where is the tunneling started? Does it start after I visit the ISP network (since they are the one that are responsible for forwarding my data and requests)? If so, then not all my connection is tunneled in this way, there is a part that is not being tunneled. Since, every time I need to do anything I have to go to my ISP and ask to do that. Correct me if I misunderstand this. I know that VPN can let my computer be virtually in another place and access its resources (ex: be like in my office while I'm in my home. This is done via VPN). If I use a VPN service provider so that I can access the internet securely and without being monitored by my ISP. In this case, where is my encrypted data saved? Is it saved in my ISP or in the VPN service provider? If I use a VPN, does anyone on the internet know what I'm doing or who I am? Even the VPN service provider? Can they know me? I think they should know the person that is asking for this VPN service, am I right?

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  • How can I prevent Virtualmin from storing passwords in cleartext?

    - by Josh
    I am really surprised at this behavior. In Virtualmin, I can see the password for any SSH user by clicking the "(Show..)" link next to the "Password ( ) Leave unchanged" option in a variety of locations. I have found that the passwords for all users including users with SSH access are stored in cleartext files in /etc/webmin/... This seems like an unnecessary risk! How can I prevent Virtualmin from storing passwords in this manner?

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  • What should I do about this user?

    - by Tim Brigham
    What should I do about this user? The user is: Downloading pornography Attempting unauthorized access Running hacking software Sending unsolicited email Installing software / tampering with the system etc This is intended as a generic answer for employee behavioral problems, a la Can you help me with my software licensing question? I could see where acceptable use issues are a touch out of scope for SF, however it is one of those things most sysadmins will run into. I don't want to keep rewriting similar answers.

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  • My Window's 7 is exposing me and my files I am the only administrator.

    - by Connie
    I am the only administrator on my Window's 7 Asus x53E series laptop. Why is a standard user able to access my files by just searching my name in the start menu? If I log into guest account and search my name it shows an error that i don't have permission. When i log into my roommate's standard account and go to the start menu I put my name in search and everything I have done or searched is open to them . How can i make my administrator account private

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  • Mod_security Logging

    - by Hekuran S. Doli
    Im trying to run mod_security as standalone service with nginx as reverse proxy everything works fine except logging. Mod_security logs reverse proxys ip addres instead of clients ip address. I would appreciate if someone can help. The following is an example of logfile where mod_security is logging 127.0.0.1 instead of clients ip address. 2012/08/29 14:18:13 [info] 206862#0: [client 127.0.0.1] ModSecurity: Access denied with code 403 (phase 2). Pattern match ...

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  • An device with an unknown MAC address is connected to my router

    - by Yar
    There is a computer that is not mine that is accessible on my network. I can even access its filesystem via AFP. What I want to know is how the computer could get on my network. My network is secured like this: Does that mean that they've used password cracking tools? The pass is not easy to guess but not hard to figure out via brute-force hacking, I guess. If I am being hacked, should I switch to WPA?

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  • Stopping an unstoppable service

    - by Nicholas
    I have antivirus service (Kaspersky) that occasionally becomes unresponsive to the normal stop/stop gui interface provided by said vendor. I would like to find a way to kill the service for a restart without rebooting, however all attempts I have tried result in failure with an 'Access is Denied' error. These include: Services Control Panel (grayed out stop button) Task Manager Killing Process Explorer Killing command line net and sc stopping runas with domain admin using net stop Some details include: Machine: Windows Vista Service Type: 10 WIN32_OWN_PROCESS Service State: 4 Running (NOT_STOPPABLE, NOT_PAUSABLE, ACCEPTS_SHUTDOWN)

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  • Ubuntu server users question

    - by Camran
    I have read this article: https://help.ubuntu.com/9.04/serverguide/C/user-management.html But it doesn't go into depth with the privileges section. I need to know how to set privileges of me (as a user). I am the only user, but I want access to everything, but I don't want to manage my VPS logged in as root. So I am creating a username. Anybody have a list of privileges, what they mean and how to set them? Thanks

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  • An unknown Mac is connected to my router?

    - by Yar
    There is a computer that is not mine that is accessible on my network. I can even access its filesystem via AFP. What I want to know is how the computer could get on my network. My network is secured like this: Does that mean that they've used password cracking tools? The pass is not easy to guess but not hard to figure out via brute-force hacking, I guess. If I am being hacked, should I switch to WPA?

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  • How to prevent a file from accessing the internet

    - by Mehper C. Palavuzlar
    There are some exe and dll files belonging to some programs on my laptop which communicate with the internet without my permission (for self-update generally). I want to prevent those files one by one from accessing the internet. I don't want to install any external firewalls. I'm using Windows 7 Home Pro and if this can be done by Windows Firewall, it's OK. I took a look at Windows Firewall but couldn't find a setting to disable file access.

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  • Mac on My Router?

    - by Yar
    There is a computer that is not mine that is accessible on my network. I can even access its filesystem via AFP. What I want to know is how the computer could get on my network. My network is secured like this: Does that mean that they've used password cracking tools? The pass is not easy to guess but not hard to figure out via brute-force hacking, I guess. If I am being hacked, should I switch to WPA?

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  • securing hard drive when users boot from usb external

    - by eshriek
    I supervise the use of a 'community' desktop computer. I would like to allow the use of the desktop via an external drive to a specific individual. How do I secure the internal hard drive so that no access is possible while using the external drive? Primarily I want to avoid accidental modification of the hard drive. The desktop runs Vista. The external is Ubuntu.

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  • Certificate Authentication

    - by Steve McCall
    I am currently working on deploying a website for staff to use remotely and would like to make sure it is secure. I was thinking would it be possible to set up some kind of certificate authentication where I would generate a certificate and install it on their laptop so they could access the website? I don't really want them to generate the certificates themselves though as that could easily go wrong. How easy / possible is this and how do I go about doing it?

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  • What prevents an attack on Postfix through its named pipes?

    - by Met?Ed
    What prevents an attack on Postfix through its named pipes by writing bogus data to them? I see on my system that they permit write access to other. I wonder if that opens Postfix to DoS or some other form of attack. prw--w--w- 1 postfix postdrop 0 Nov 28 21:13 /var/spool/postfix/public/pickup prw--w--w- 1 postfix postdrop 0 Nov 28 21:13 /var/spool/postfix/public/qmgr I reviewed the pickup(8) man page, and searched here and elsewhere, but failed to turn up any answers.

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  • How can I generate a client proxy for a WCF service with an HTTPS endpoint?

    - by ng5000
    Might be the same issue as this previuos question: WCF Proxy but not sure... I have an HTTPS service connfigured to use transport security and, I hope, Windows credentials. The service is only accessed internally (i.e. within the intranet). The configuration is as follows: <configuration> <system.serviceModel> <services> <service name="WCFTest.CalculatorService" behaviorConfiguration="WCFTest.CalculatorBehavior"> <host> <baseAddresses> <add baseAddress = "https://localhost:8000/WCFTest/CalculatorService/" /> </baseAddresses> </host> <endpoint address ="basicHttpEP" binding="basicHttpBinding" contract="WCFTest.ICalculatorService" bindingConfiguration="basicHttpBindingConfig"/> <endpoint address="mex" binding="mexHttpsBinding" contract="IMetadataExchange"/> </service> </services> <bindings> <basicHttpBinding> <binding name="basicHttpBindingConfig"> <security mode="Transport"> <transport clientCredentialType = "Windows"/> </security> </binding> </basicHttpBinding> </bindings> <behaviors> <serviceBehaviors> <behavior name="WCFTest.CalculatorBehavior"> <serviceAuthorization impersonateCallerForAllOperations="false" principalPermissionMode="UseWindowsGroups" /> <serviceCredentials > <windowsAuthentication allowAnonymousLogons="false" includeWindowsGroups="true" /> </serviceCredentials> <serviceMetadata httpsGetEnabled="True"/> <serviceDebug includeExceptionDetailInFaults="False" /> </behavior> </serviceBehaviors> </behaviors> </system.serviceModel> </configuration> When I run the service I can't see the service in IE. I get a "this page can not be displayed" error. If I try and create a client in VS2008 via the "add service reference" wizard I get this error: There was an error downloading 'https://localhost:8000/WCFTest/CalculatorService/'. There was an error downloading 'https://localhost:8000/WCFTest/CalculatorService/'. The underlying connection was closed: An unexpected error occurred on a send. Authentication failed because the remote party has closed the transport stream. Metadata contains a reference that cannot be resolved: 'https://localhost:8000/WCFTest/CalculatorService/'. An error occurred while making the HTTP request to https://localhost:8000/WCFTest/CalculatorService/. This could be due to the fact that the server certificate is not configured properly with HTTP.SYS in the HTTPS case. This could also be caused by a mismatch of the security binding between the client and the server. The underlying connection was closed: An unexpected error occurred on a send. Authentication failed because the remote party has closed the transport stream. If the service is defined in the current solution, try building the solution and adding the service reference again. I think I'm missing some fundamental basics here. Do I need to set up some certificates? Or should it all just work as it seems to do when I use NetTcpBinding? Thanks

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  • JSF SSL Hazzard

    - by java beginner
    In my application it is required that only certain pages need to be secured using SSL so I configured it security-constraint> <display-name>Security Settings</display-name> <web-resource-collection> <web-resource-name>SSL Pages</web-resource-name> <description/> <url-pattern>/*.jsp</url-pattern> <http-method>GET</http-method> <http-method>POST</http-method> </web-resource-collection> <user-data-constraint> <description>CONFIDENTIAL requires SSL</description> <transport-guarantee>CONFIDENTIAL</transport-guarantee> </user-data-constraint> and added filter http://blogs.sun.com/jluehe/entry/how_to_downshift_from_https but only one hazard is there. I am using it with richFaces. Once it goes to HTTPS its not changing the page—I mean if I perform post action it doesn't actually happen. But if I do it from the local machine's browser it works perfectly, from a remote browser it stucks with HTTPS and not changing after that. Here is my web.xml's snap: <filter> <filter-name>MyFilter</filter-name> <filter-class>MyFilter</filter-class> <init-param> <param-name>httpPort</param-name> <param-value>8080</param-value> </init-param> </filter> <filter-mapping> <filter-name>MyFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <security-constraint> <web-resource-collection> <web-resource-name>Protected resource</web-resource-name> <url-pattern>somePattern</url-pattern> <http-method>GET</http-method> <http-method>POST</http-method> </web-resource-collection> <user-data-constraint> <transport-guarantee>CONFIDENTIAL</transport-guarantee> </user-data-constraint> </security-constraint> and some other filters of richfaces. Problem is strange. If I try to access the web app from local's machine's browser it works fine but in remote machine's browser once it get into HTTP, all the forms of that page aswell as href stops working.(JSF,facelet is used.)

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  • Access to message queuing system is denied MSMQ?

    - by user1401694
    My problem is a little confusing. I have 2 servers (Windows Server 2008 R2) with MSMQ installed and I want to use Server B to consume a MessageQueue on Server A. When I try to Receive it always throws a message error: "Access to message queuing system is denied.". IP between them. Server A: 172.31.23.130 Server B: 172.31.23.195 FormatName:Direct=TCP:172.31.23.195\private$\queuesource (It's working for Sends) I can ping each server from the other; The firewall is disabled; The "queuesource" has Full Control to "Everyone", "Anonymous Logon", "Network", "Network Services"; Journal is disabled; Authentication is ok; The queue is Transactional. My code in .Net C# is basically like this: MessageQueue _sourceQueue = new MessageQueue(); _sourceQueue.Path = "FormatName:Direct=TCP:172.31.23.195\private$\queuesource"; _sourceQueue.Receive(); // << here throw an exception. Actually I'm using the Private Queue only to avoid Active Directory's problems. For example, if the server DNS fail all network fail. I don't know what do anymore.

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