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• Protect Windows VPN from Unauthorized Users

  - by kobaltz

  I have a VPN connection that I use while away from home to remote into my home network. I would use a zero config solution like Hamachi, but need access from my mobile device. Therefore, I have my Windows Home Server acting as the VPN server and will accept incoming connections. Both the username and password are strong. However, I'm worried about brute force attacks against my network. Is there something else that I should do to protect my network from having unauthorized access attempts to my network? I'm familiar with Linux's FAIL2BAN, but wasn't sure if something similar existing for Windows.

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• Xen 4.1 host (dom0) with blktap disks ("tap:aio:") not connecting

  - by Manwe

  Problem using blktap with xen-4.1 running Ubuntu Precise stock kernel with dom0 xen-4.1. I get: [ 5.580106] XENBUS: Waiting for devices to initialise: 295s...290s. ... [ 300.580288] XENBUS: Timeout connecting to device: device/vbd/51713 (local state 3, remote state 1) And some syslog lines: May 17 13:07:30 localhost logger: /etc/xen/scripts/blktap: add XENBUS_PATH=backend/tap/10/51713 May 17 13:07:31 localhost logger: /etc/xen/scripts/blktap: Writing backend/tap/10/51713/hotplug-status connected to xenstore. with tap:aio: disk lines. file:/ works. disk = [ 'tap:aio:/data/root.img,xvda1,w', ] Problem exists with lucid and precises domU kernels and both guests work in Ubuntu hardy dom0 Host 64bit 2.6.24-28-xen xen-3.3 3.2.0-24-generic #37-Ubuntu SMP Wed Apr 25 08:43:22 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux Distributor ID: Ubuntu Description: Ubuntu 12.04 LTS Release: 12.04 Codename: precise

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• Sendmail problem

  - by trobrock

  I am trying to get my server to be able to send email from PHP. Currently it is using send mail, but whenever I try to send mail to a gmail address I get this sort of response: --o54Mqd5s008981.1275691959/ServerName Content-Type: message/delivery-status Reporting-MTA: dns; ServerName Received-From-MTA: DNS; localhost Arrival-Date: Fri, 4 Jun 2010 22:52:38 GMT Final-Recipient: RFC822; [email protected] Action: failed Status: 5.7.1 Remote-MTA: DNS; gmail-smtp-in.l.google.com Diagnostic-Code: SMTP; 550-5.7.1 [xxx.xxx.xxx.xxx] The IP you're using to send mail is not authorized Last-Attempt-Date: Fri, 4 Jun 2010 22:52:39 GMT How can I set this up to relay through a google account that I own? Is sendmail the best thing to use, or should I switch to Postfix or something? This is on an Ubuntu Server 9.10

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• Server 2008 R2 repair install

  - by Kyle

  Is it possible to do a repair install on a server 2008 R2 Enterprise machine like we used to be able to do on 2003? I need to reinstall on a remote server and don't have a driver cd in the drive just a copy of server. I am worried that when it comes back up I won't have any drivers for the NIC. I have a iDRAC but can't seem to send files over the DRAC to the machine. Sadly this server doesn't have an SD card in the DRAC with the files I need. I welcome any suggestions if the repair is not possible. Our IDC is in Chicago and they are buried under snow so I won't be able to get another admin on site until at least tomorrow.

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• Ending a program on Windows Mobile 6 that refuses to die

  - by Brandon

  I have an application that was installed on a handheld device running Windows Mobile 6.0. The application basically connects to a remote server and sends scanned barcodes to it. The application shut down unexpectedly, and now it refuses to go away. I tried starting it up again and nothing happened. I went to the Running Programs, hit Stop All, and it ended everything but the application. It gives an error saying it's not responding, so I try to End Task, and it does nothing. I even uninstalled and reinstalled the application. Is there any way to kill this thing?

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• How to keep TightVNC client on Windows XP alive when connected to OS X?

  - by Craig

  I'm using TightVNC on my Windows XP workstations to connect to a remote OS X box (10.5.x) using OS X's VNC support. I've noticed that the TightVNC will become unresponsive after a period of inactivity. Is this a common issue? Restarting TightVNC solves the problem, but can be a bit annoying. Is there a solution to this? I don't suppose copy & paste between the two systems can be made to work?

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• Ubuntu firefox: some web-pages stuck on loading

  - by kristaps.skujins

  Just installed Ubuntu 10.04 beta, installation went fine and all programs are working smooth. Just this one weird network problem. Some sites simply are not opening and loading forever. For example, google.com and youtube are working well, but ubuntu.com and many other are not opening at all, or are loaded partly. One thing i noticed is that on all of those pages on firefox status bar is message "Looking up for www.google-analytics.com" (or similar remote resources) message appearing all the time (even on this page, but it somehow has loaded and working). I should mention that i tried those pages to open on windows OS on this same machine, and they opened without problems. So i am guessing that it has to be some sort of network configuration problems on Ubuntu. What could cause such problem?

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• apache httpd cannot browse through browser

  - by nuttynibbles

  i've setup apache and php on a virtual machine. everything works fine in the virtual machine. im able to execute php files and run up phpmyadmin connecting to mysql. on my host machine, im able ping and ssh into the remote machines. however, im unable to browse the php files on the host browser using the ip address. in my httpd.conf, im listening to port 80. i enabled the ServerName 192.168.75.102:80 am i missing some settings? port settings maybe?

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• VPN connects but my browsers and messenger don't connect

  - by elizabeth chubbuck

  I have no problem VPN into work. As of last night, everything worked fine. But as of this A.M., none of my browsers connect and Microsoft Messenger will not connect. I did nothing, but had a pending a OSX update. I rebooted.. Still no internet. All network connections working, clearly, since VPN works. Its how I am doing this post now, is via VPN and remote desktopping to work computer. This just showed up as of this morning not working. I renewed DHCP, etc.. but cannot ping anywhere.

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• Printing on Windows 8 64-Bit through Windows Server 2008 (32 Bit) RemoteApp

  - by Chris

  We have a network where our server is running on Windows Server 2008 (32 Bit) and a client computer is running on Windows 8.1 (64 bit) with a local printer attached to the client. The printer is an HP P1006. The remote app works well but when trying to print we get an odd "error 545". We have tried both using the "connect client printer" function in remoteapp and also making the printer shared over the network and printing to it via the network from within the remoteapp. Nothing works. We can print a test page from the server to the client computer just fine, but it seems from remoteapp we cannot. We have also tried installing the 32 bit drivers on the 64 bit machine as both the primary and secondary drivers but cannot get them to install. Suggestions please? We've been going crazy over this issue.

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• Preventing - Large Number of Failed Login Attempts from IP

  - by Silver89

  I'm running a CentOS 6.3 server and currently receive emails entitled "Large Number of Failed Login Attempts from IP" from my server every 15 minutes or so. Surely with the below configured it should mean only the person using the (my static ip) should be able to even try and log in? If that's the case where are these remote unknown users trying to log into which is generating these emails? Current Security Steps: root login is only allowed without-password StrictModes yes SSH password login is disabled - PasswordAuthentication no SSH public keys are used SSH port has been changed to a number greater than 40k cPHulk is configured and running Logins limited to specific ip address cPanel and WHM limited to my static ip only hosts.allow sshd: (my static ip) vsftpd: (my static ip) whostmgrd: (my static ip) hosts.deny ALL : ALL

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• Input traffic shaping

  - by whitequark

  I know that I can shape output traffic with tc or a similar tool. However, I want to shape the input traffic now—actually, I want to prioritize downloading of files of certain type through a slow lossy connection. I know the reason tc can only shape output traffic: the host itself has no direct control over the amount of input traffic. On the other hand, TCP has some measures built in it which prevent the TCP traffic from overflowing a slow connection. So, can I mangle something in TCP header so that the remote host will think my connection is slower than it thinks? Suppose that I am able to set the corresponding mark on both types of connections with iptables. Is there any way to reduce the input bandwidth of connections of first type, but only if connections of second type are present?

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• How can I update Firefox add-ons automatically?

  - by Maelstrom

  Similar to this question, is it possible to update installed plugins via the command line? I'm running YSlow with beacon reporting as a nightly cron job under OSX: /Applications/Firefox.app/Contents/MacOS/firefox-bin -no-remote -P YSlow http://www.example.com/ & PID=$! sleep 300 kill $PID This dumps FF into the background and grabs the PID, waits 300 seconds (for the page to load) then kills it. If there is an update pending, the browser "hangs" waiting for a confirmation. If I do click on the "install updates" link, everything works and then Firefox launches a new process - the $! returned by the shell is no longer valid. Can I update a plugin from the command line without confirmation? Can I curl the XPI into a file and install it without confirmation?

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• Relation between Apache and DNS configuration

  - by KayKay

  I configured my DNS (bind9) to accept every subdomain, using a wildcarded 'A' record : *.mydomain.tld. IN A xx.xx.xx.xx I configured Apache to serve some specific subdomains using virtual hosts : <VirtualHost *:80> ServerName sub1.mydomain.tld ServerAlias sub1.mydomain.tld JkMount / sub1JK JkMount /* sub1JK </VirtualHost> when I ping from a remote computer on a subdomain configured in apache I get a response. When I ping on a subdomain that is not configured in apache, the host is not found. I don't understand why apache configuration would affect DNS resolution like this? I would appreciate any information that helps me understand this. Thanks a lot.

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• How to force rsync to use destination directory as root

  - by thepurplepixel

  I have a simple script to one-way-sync files/folders within a directory: #!/bin/bash HOST='<hostname>' USER='<username>' DIR='/downloads/' SOURCE='/srv/torrents' rsync -e "ssh -l $USER" --remove-source-files -h -4 -r --stats --progress -i $SOURCE $HOST:$DIR find $SOURCE -type d -empty -prune -exec rmdir -p \{\} \; However, when this rsync operation runs, it creates a folder, torrents in /downloads on the destination machine. How can I force rsync to put all folders & files from /srv/torrents (remote) into /downloads/ (local) instead of creating /downloads/torrents as a separate directory?

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• Desktop speakers with headphone port and separate volume controls

  - by Kevin L.

  I currently use the excellent Logitech X-230 desktop speaker/subwoofer set, which I love for the volume dial on the front which gives me a nice, quick, tactile control of my sound without requiring a remote or keyboard buttons or some awkward software slider. Additionally, there's a very convenient headphone jack right next to the volume dial but the volume dial only controls the speakers, leaving the headphones at full volume. The goal is to be able to adjust the sound in my headphones without having to fumble around and find an inline headphone volume control (and my current favorite pair doesn't even have one). Is anyone aware of a desktop speaker set that has convenient volume controls for both levels?

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• Windows 2003 - RAS service - VPN client can only connect to server, not internal network

  - by Gk

  Here is my diagram http://imageshack.us/photo/my-images/263/vpnt.png/ Server has two NIC: One connect to Internet, one connect to internal network. RAS service is configured with static IP pool on the same subnet of internal network (10.10.0.x). The problem is when a client connect to server, client can connect to server(10.10.0.10), but cannot connect to another host locate in internal network (10.10.0.11) even cannot ping to 10.10.0.50. RAS configured with IP routing enabled, client connect with options: Use default gateway on remote network. I'm messed up and can not figure out what wrong. Please help me T_T. TIA, giobuon

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• Lightweight tool for viewing raw HTTP messages?

  - by rewbs

  Hi, I'm investigating differences in behaviour between a couple of Web servers. I need to see raw response data from the servers (i.e. before the response is de-chunked if it has "Transfer-Encoding:chunked" and before it is decompressed if it has "Content-Encoding:gzip"). I can find plenty of simple HTTP client that nearly do what I need (e.g. Poster, RESTClient), but they tend to decode the response one step too far. Network analysers like Wireshark give me what I need but are a bit heavyweight. Telnet is my best bet so far, but is a bit too simplistic (actions like capturing data or entering requests are a bit laborious). Can anyone recommend a good, lightweight tool for sending / viewing the raw data that constitute HTTP messages? Edit: I should add that I'm on Windows. Also, the tool would need to work both with remote and local servers.

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• Internet printing : print to iOS gateway -> AirPrint / something -> Laser printers

  - by user75129

  I've done a bit of research on the Internet, and it looks like I'm on a dead end. My goal is to minimize cost, and be able to send and print documents AUTOMATICALLY (may be 10 or 20 pages per day) to a laser printer in a remote office. The preliminary method is to use: iOS 5.1.1 (JB'ed) with 3G connection, HP (or other brands) printer with AirPrint, iCloud's Documents and may be write some launchd scripts to monitor any new documents in iCloud. May be with other software. I am not sure yet. By using the cloud, I can upload new docs to the cloud anywhere in my city, and the iOS will be able to see them within a reasonable amount of time, then print it. But it seems this combo is not workable. Anyone got any advice on how to make this set up work, or propose other alternatives that requires NO PC or Mac? Currently I have a 3GS with 3G connectivity spare. Need to buy a new printer though.

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• USB MFP print server that works with Windows x64?

  - by hangy

  Right now, we are using the Longshine LCS-MFP101-2 to connect to our MFP device (printer/scanner combo) over LAN. However, the required driver (RMVUSB, Remote Virtual USB) cannot be installed on 64 bit Windows operating systems such as Windows XP x64 or Windows 7 x64. Since the distributor lists the product as "phased out", I do not expect any updated 64 bit drivers any time soon. :/ Because of that, I am searching for a relatively cheap SOHO MFP print server (1 USB port should be enough) which can be used with 32 bit and 64 bit versions of Windows. Do you have any ideas or recommendations? Thanks!

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• What is needed for 'Previous Versions' to be visible on the client OS?

  - by Zoredache

  I have servers with Shadow Copies enabled taking snapshots a couple times a day. From the server, if you look at the local devices you can see the Previous Versions being populated reliably. But from remote clients, the ability for an end-user to see the Previous Versions seems to be very hit-or-miss. For the sake of this question you can assume that all my clients are Windows 7 and the Servers are Windows Server 2008 R2. Is there an exhaustive list of everything that is required for end user to see Previous Versions? Are their any requirements for a certain level of share or filesystem permissions, other then read access? Does something need to be open on the firewall, other then what is already in-place for normal Windows networking?

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• Two users using the same same user profile while not in a domain.

  - by Scott Chamberlain

  I have a windows server 2003 acting as a terminal server, this computer is not a member of any domain. We demo our product on the server by creating a user account. The person logs in uses the demo for a few weeks and when they are done we delete the user account. However every time we do this it creates a new folder in C:\Documents and Settings\. I know with domains you can have many users point at one profile and make it read only so all changes are dumped afterwords, but is there a way to do that when the machine is not on a domain? I would really like it if I didn't have to remote in and clean up the folders every time.

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• Only ONE Outlook 2010 installation "Cannot connect to Exchange server" when setting up new profile.

  - by Johnny PDEX

  Exchange 2010, one-server installation (small production, I know not best practice) OWA Connectivity has been confirmed, Autodiscover is configured and working properly for EVERY other installation. Other user accounts tested on problem Outlook, none can connect. Windows Firewall is pre-configured by Group Policy, only modifications being related to remote management. Firewall has also been disabled during diagnostic period. Network discovery and file sharing is enabled on workstation as well. Windows 7 Professional, latest updates installed. Driving me nuts. Help, serverfault?

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• Tool to test a user account and password (test login)

  - by TheCleaner

  Yeah, I can fire up a VM or remote into something and try the password...I know...but is there a tool or script that will simulate a login just enough to confirm or deny that the password is correct? Scenario: A server service account's password is "forgotten"...but we think we know what it is. I'd like to pass the credentials to something and have it kick back with "correct password" or "incorrect password". I even thought about a drive mapping script with that user account and password being passed to see if it mapped the drive successfully or not but got lost in the logic of making it work correctly...something like: -Script asks for username via msgbox -script asks for password via msgbox -script tries to map a drive to a common share that everyone has access to -script unmaps drive if successful -script returns popup msgbox stating "Correct Password" or else "Incorrect Password" Any help is appreciated...you'd think this would be a rare occurrence not requiring a tool to support it but...well....

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• Azure VM : Connection refused by host

  - by Simon Kérouack

  I recently stopped a subscription with 14 VMs in it and restarted it a few days later. Now all my VMs are working just fine at the exception of 6 used for MongoDB. They respond to ping and so they show as online in the azure dashboard but they do not answer to anything else. I tried (from different locations, in and out of the azure cloud) ssh : connect to host * port *: Connection refused telnet : Unable to connect to remote host: Connection refused mongo : exception: connect failed The ports for ssh and mongo are opened in azure. I tried restarting the VMs a few times trough the azure dashboard, they seem to restart successfully but still refuse all connections. I already looked for similar issues and the best solutions I found was to wait... the issue has been happening for 7 days and waiting is no more an option.

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