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• Suggestions for getting an open source electron beam tracking code going

  - by Boaz

  I work in the field of accelerator physics and synchrotron radiation. High energy electrons circulating in large rings of magnets produce x-rays that are used for a variety of different kinds of science. Running and improving these facilities requires controlling and modelling the electron beam as it circulates in the ring. A code to model this basically requires trackers to follow the electrons through the elements (something called a symplectic integrator), and then the computation of different parameters associated with this motion. The problem with these codes is that every facility has there own. In principle the code is not so complex. And as a modelling project, one might think it has some general interest. Who doesn't want to be able to create a track in space out of magnets and watch the electrons circulate? There is a Matlab based code to do this called Accelerator Toolbox, but the creator of the code is no longer in the field. I put the code in Sourceforge under the name atcollab. The basic resource is in C- it is the set of symplectic integrators. These are available in the atcollab code here. It has been useful to put the code on Sourceforge in order to exchange code, but the community of users is quite small and most are too busy to put that much time into collaboration. So in terms of really improving the code, I don't think it has been so successful. Any piece of this picture could be recreated without that much difficulty, but overall it is a bit complex, and because each lab has their own installation with lots of add-on Matlab code, people find it hard to really work together and share code. Somehow I think we need to involve a wider community in our development, or just use some standard tools. But for that, I suppose it needs to be of some general interest. I think symplectic integrators may have some general interest. And the part about a plug-in architecture to build up the ring ought to fit other patterns. Or the other option is to just accept that this is not a problem of general interest, and work harder within our small community. Suggestions, or anecdotes of analogous experience would be appreciated.

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• Setting up Ubuntu Server as a Router with DHCPD and 3 Ethernet devices

  - by cengbrecht

  My configuration: Ubuntu 12.04 DHCP3-server eth0, eth1, eth2 Edit: removed br0&br1 eth0 is the external connection eth1 & eth2 are the internal network eth1 and eth2 are supposed to be seperate networks of student/teachers respectivly. What I would like to have is the internet from external device bridged to device 1 and 2, with the DHCP server controlling the two internal devices. Its already working with DHCP, the part I am stuck on is bridging for internet. I have setup a script that I found here: Router With the original script he linked here: Ubuntu Router Guide echo -e "\n\nLoading simple rc.firewall-iptables version $FWVER..\n" IPTABLES=/sbin/iptables #IPTABLES=/usr/local/sbin/iptables DEPMOD=/sbin/depmod MODPROBE=/sbin/modprobe EXTIF="eth0" INTIF="eth1" INTIF2="eth2" echo " External Interface: $EXTIF" echo " Internal Interface: $INTIF" echo " Internal Interface: $INTIF2" EXTIP=`ifconfig $EXTIF | grep 'inet addr:' | sed 's#.*inet addr\:\([0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}\).*#\1#g'` echo " External IP: $EXTIP" #====================================================================== #== No editing beyond this line is required for initial MASQ testing == The rest of the script below this is as is. I can get ip from the eth1 & eth2 devices, and my computer can see them, and them it, however, internet is not being passed through. If you need more information please just let me know. EDIT: So I had a 255.255.254.0 network, I believe that was causing the issue. Not sure if it will matter on the second card, I will test later. After changing the subnet to 255.255.255.0 the pings will pass through, however, I cannot get DNS requests to pass? My new Config for Firewall Rules # /etc/iptables.up.rules # Generated by iptables-save v1.4.12 on Wed Nov 28 19:43:28 2012 *mangle :PREROUTING ACCEPT [39:4283] :INPUT ACCEPT [39:4283] :FORWARD ACCEPT [0:0] :OUTPUT ACCEPT [12:4884] :POSTROUTING ACCEPT [13:5145] COMMIT # Completed on Wed Nov 28 19:43:28 2012 # Generated by iptables-save v1.4.12 on Wed Nov 28 19:43:28 2012 *filter :FORWARD ACCEPT [0:0] :INPUT ACCEPT [0:0] :OUTPUT ACCEPT [0:0] -A FORWARD -j LOG -A FORWARD -m state -i eth1 -o eth0 --state NEW,ESTABLISHED,RELATED -j ACCEPT -A FORWARD -m state -i eth2 -o eth0 --state NEW,ESTABLISHED,RELATED -j ACCEPT -A FORWARD -m state -i eth0 -o eth1 --state NEW,ESTABLISHED,RELATED -j ACCEPT -A FORWARD -m state -i eth0 -o eth2 --state NEW,ESTABLISHED,RELATED -j ACCEPT COMMIT # Completed on Wed Nov 28 19:43:28 2012 # Generated by iptables-save v1.4.12 on Wed Nov 28 19:43:28 2012 *nat :INPUT ACCEPT [0:0] :PREROUTING ACCEPT [0:0] :OUTPUT ACCEPT [0:0] :POSTROUTING ACCEPT [0:0] -A POSTROUTING -o eth0 -j MASQUERADE -A POSTROUTING -o eth0 -j SNAT --to-source 192.168.1.25 COMMIT # Completed on Wed Nov 28 19:43:28 2012 Not sure what else you may need, but I am using Webmin to control the server(Needed for the operators on site to know how to use it.) If you could explain it as standard CLI commands, or edits to this file directly then we should be ok. :) And thanks again Erik, I do believe your edits did help.

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• Purple Cows, Copernicus, and Shampoo – Lessons in Customer Experience

  - by Christina McKeon

  What makes a great customer experience? And, why should you or your organization care? These are the questions that set the stage for the Oracle Customer Experience Summit, which kicked off yesterday in San Francisco. Day 1: The first day was filled with demos and insights from customer experience experts and Oracle customers sharing what it takes to deliver great customer experiences. Author Seth Godin delivered an entertaining presentation that included an in-depth exploration of the always-connected, always-sharing experience revolution that we are witnessing and yes, talked about the purple cow. It turns out that customer experience is your way to be the purple cow. Before everyone headed out to see Pearl Jam and Kings of Leon at the Oracle customer appreciation event, the day wrapped up with a discussion around building a customer-centric culture. Where do you start? Whom does it involve? What are some pitfalls to avoid? Day 2: The second day addressed the details behind all the questions brought up at the end of Day 1. Before you start on a customer experience initiative, Paul Hagen noted that you must understand you will forge a path similar to Copernicus. You will be proposing ideas and approaches that challenge current thinking in your organization. Just as Copernicus' heliocentric theory started a scientific revolution, your customer-centric efforts will start an experience revolution. If you think customer experience is like a traditional marketing approach, think again. It’s not about controlling your customers and leading them where you want them to go. It might sound like heresy to some, but your customers are already in control, whether or not your company realizes and acknowledges it. And, to survive and thrive, you'll have to focus on customers by thinking outside-in and working towards a brand that is better and more authentic. We learned how Vail Resorts takes this customer-centric approach. Employees must experience the mountain themselves and understand the experience from the guest’s standpoint. This has created a culture where employees do things for guests that are not expected. We also learned a valuable lesson in designing and innovating customer-centered experiences from Kerry Bodine. First you make the thing, and then you make the thing right. In this case, the thing is customer experience. Getting customer experience right means iterative prototyping and testing of your ideas. This is where shampoo comes in—think lather, rinse, repeat. Be prepared to keep repeating until the customer experience is right. Many of these sessions will be posted to YouTube in the coming weeks so be sure to subscribe to our CX channel.

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• Help with Strategy-game AI

  - by f20k

  Hi, I am developing a strategy-game AI (think: Final Fantasy Tactics), and I am having trouble coming up for the design of the AI. My main problem is determining which is the optimal thing for it to do. First let me describe the priority of what action I would like the AI to take: Kill nearest player unit Fulfill primary directive (kill all player units, kill target unit, survive for x turns) Heal ally unit / cast buffer Now the AI can do the following in its turn: Move - {Attack / Ability / Item} (either attack or ability or item) {Attack / Ability / Item} - Move Move closer (if targets not in range) {Attack / Ability / Item} (if move not available) Notes Abilities have various ranges / effects / costs / effects. Each ai unit has maybe 5-10 abilities to choose from. The AI will prioritize killing over safety unless its directive is to survive for x turns. It also doesn't care about ability cost much. While a player may want to save a big spell for later, the AI will most likely use it asap. Movement is on a (hex) grid num of player units: 3-6 num of ai units: 3-7 or more. Probably max 10. AI and player take turns controlling ONE unit, instead of all at the same time. Platform is Android (if program doesnt respond after some time, there will be a popup saying to Force Quit or Wait - which looks really bad!). Now comes the questions: The best ability to use would obviously be the one that hits the most targets for the most damage. But since each ability has different ranges, I won't know if they are in range without exploring each possible place I can move to. One solution would be to go through each possible places to move to, determine the optimal attack at that location - which gives me a list of optimal moves for each location. Then choose the optimal out of the list and execute it. But this will take a lot of CPU time. Is there a better solution? My current idea is to move as close as possible towards the closest, largest group of people, and determine the optimal attack/ability from there. I think this would be a lot less work for the CPU and still allow for wide-range attacks. Its sub-optimal but the AI will still seem 'smart'. Other notes/questions: Am I over-thinking/over-complicating it? Better solution? I am open to all sorts of suggestions I have taken a look at the spell-casting question, but it doesn't take into account the movement - so perhaps use that algo for each possible move location? The top answer mentioned it wasn't great for area-of-effect and group fights - so maybe requires more tweaking? Please, if you mention a graph/tree, let me know basically how to use it. E.g. Node means ability, level corresponds to damage, then search for the deepest node.

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• How should I structure my turn based engine to allow flexibility for players/AI and observation?

  - by Reefpirate

  I've just started making a Turn Based Strategy engine in GameMaker's GML language... And I was cruising along nicely until it came time to handle the turn cycle, and determining who is controlling what player, and also how to handle the camera and what is displayed on screen. Here's an outline of the main switch happening in my main game loop at the moment: switch (GameState) { case BEGIN_TURN: // Start of turn operations/routines break; case MID_TURN: switch (PControlledBy[Turn]) { case HUMAN: switch (MidTurnState) { case MT_SELECT: // No units selected, 'idle' UI state break; case MT_MOVE: // Unit selected and attempting to move break; case MT_ATTACK: break; } break; case COMPUTER: // AI ROUTINES GO HERE break; case OBSERVER: // OBSERVER ROUTINES GO HERE break; } break; case END_TURN: // End of turn routines/operations, and move Turn to next player break; } Now, I can see a couple of problems with this set-up already... But I don't have any idea how to go about making it 'right'. Turn is a global variable that stores which player's turn it is, and the BEGIN_TURN and END_TURN states make perfect sense to me... But the MID_TURN state is baffling me because of the things I want to happen here: If there are players controlled by humans, I want the AI to do it's thing on its turn here, but I want to be able to have the camera follow the AI as it makes moves in the human player's vision. If there are no human controlled player's, I'd like to be able to watch two or more AI's battle it out on the map with god-like 'observer' vision. So basically I'm wondering if there are any resources for how to structure a Turn Based Strategy engine? I've found lots of writing about pathfinding and AI, and those are all great... But when it comes to handling the turn structure and the game states I am having trouble finding any resources at all. How should the states be divided to allow flexibility between the players and the controllers (HUMAN, COMPUTER, OBSERVER)? Also, maybe if I'm on the right track I just need some reassurance before I lay down another few hundred lines of code...

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• map subdomain to another subdomain via cname

  - by Stephen

  Question: I need to get DNS configured to point a subdomain from one domain (which I will generally not be controlling) to another subdomain on a different domain name. Testing this process using a simple CNAME entry keeps pointing to the primary domain and not the subdomain where it should be going. This is the scenario; (newdomain.com is in my control) cdn.xyz.com should display content from this subdomain subdomain.newdomain.com It is instead displaying content from newdomain.com (not the subdomain sub domain) cdn.xyz.com/page.htm displays content from newdomain.com/page.htm although what I need is it to display content from subdomain.newdomain.com/page.htm Other Background: setup is between two different servers with different IP ranges although DNS cluster is on between all servers the newdomain.com is set up with its own unique IP (which is on the A records for the subdomains, the subdomains work as expected/normal) the DNS entry is correct (cdn CNAME subdomain.newdomain.com.) ie the end period is included a DNS lookup on the CNAME externally reports back as subdomain.newdomain.com. as the record Does anyone know what DNS entries I am missing to get this working correctly ? Note: I do not want to just put a redirect between domains as I need the content of subdomain.newdomain.com/content.html to be visible via the URL of cdn.xyz.com/content.html also I can just use some redirects on newdomain.com to achieve what I am after but would prefer to just get the DNS correct. EDIT Current DNS cdn CNAME subdomain.newdomain.com. || CNAME entry for domain1 subdomain A XXX.XXX.XXX.XXX || A record entry for working subdomain pointing to unique IP What should happen is that cdn.domain1.com - subdomain.newdomain.com What is happening is cdn.domain1.com - newdomain.com (ie. the root not the subdomain) EDIT 2 Actually if its easier I am trying to emulate a simple cloud setup like Rackspace Containers (which I assume is similar to Buckets on AWS). although it is not for cloud storage Where a container has a url reference of hd62321678d323.rackspace.com (in truth they are much longer) so I can use a CNAME record of: cdn CNAME hd62321678d323.rackspace.com. so that http://cdn.mydomain.com/myfile.jpg displays content from http://hd62321678d323.rackspace.com/myfile.jpg

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• Synergy Key Mapping

  - by Tauren

  I'm running a Synergy server on Ubuntu and a Synergy+ client on OSX. The server has a standard windows keyboard with shift, ctrl, windows, and alt keys. My MacBookPro has shift, fn, control, alt/option, and command keys. When I press ctrl-c, ctrl-v, etc, the appropriate copy/paste action doesn't happen on the Mac, but it does in Ubuntu. If I'm controlling the mac, and press alt-c, alt-v, then I get the copy/paste action. So I played around with key mapping in synergy.conf and found that the following allows me to do copy/paste with ctrl-c/ctrl-v: section: screens godzilla: mbp.local: ctrl = alt alt = ctrl end Is this all that I need to do? Or are there other mappings that will help as well? The synergy configuration page refers to the following key mappings. What are the equivalent keys for each of these on the Windows keyboard and Mac keyboard? What is a meta or super key? shift = {shift|ctrl|alt|meta|super|none} ctrl = {shift|ctrl|alt|meta|super|none} alt = {shift|ctrl|alt|meta|super|none} meta = {shift|ctrl|alt|meta|super|none} super = {shift|ctrl|alt|meta|super|none} Thanks!

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• getting a pyserial not loaded error

  - by skinnyTOD

  I'm getting a "pyserial not loaded" error with the python script fragment below (running OSX 10.7.4). I'm trying to run a python app called Myro for controlling the Parallax Scribbler2 robot - figured it would be a fun way to learn a bit of Python - but I'm not getting out of the gate here. I've searched out all the Myro help docs but like a lot in-progress open source programs, they are a moving target and conflicting, out of date, or not very specific about OSX. I have MacPorts installed and installed py27-serial without error. MacPorts lists the python versions I have installed, along with the active version: Available versions for python: none python24 python25 python25-apple python26 python26-apple python27 python27-apple (active) python32 Perhaps stuff is getting installed in the wrong places or my PATH is wrong (I don't much know what I am doing in Terminal and have probably screwed something up). Trying to find out about my sys.path - here's what I get: import sys sys.path ['', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python27.zip', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-darwin', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-mac', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-mac/lib-scriptpackages', '/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-tk', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-old', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-dynload', '/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/PyObjC', '/Library/Python/2.7/site-packages'] Is that a mess? Can I fix it? Anyway, thanks for reading this far. Here's the python bit that is throwing the error. The error occurs on 'try import serial'. # Global variable robot, to set SerialPort() robot = None pythonVer = "?" rbString = None ptString = None statusText = None # Now, let's import things import urllib import tempfile import os, sys, time try: import serial except: print("WARNING: pyserial not loaded: can't upgrade!") sys.exit() try: input = raw_input # Python 2.x except: pass # Python 3 and better, input is defined try: from tkinter import * pythonver = "3" except: try: from Tkinter import * pythonver = "2" except: pythonver = "?"

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• Debian and Multipath IO problem

  - by tearman

  Basically the situation is, I have a box running Debian, the box internally has an Intel SCSI RAID controller which is controlling 2 hard drives in RAID1 mode which is where the OS is installed. Further, I have a QLogic fiber channel adapter that connects the unit to a Fiber Channel SAN. My process of installation is I'll install Debian to the local drives, and leave the QLogic firmware out of it for the time being. Then once I get the unit online, I'll install the firmware drivers. This flops my internal drives from /dev/sda to /dev/sdc, which is a bit annoying, but recoverable. Probably should address these by UUID anyways. Once I get back online, I have to install multipath-tools (the framework is a multipath framework). However, once I reboot the machine again, it fails on boot after discovering multipath targets, saying my local drives are busy and cannot be mounted to /root. Any help in what may be the problem here? Or at least how to disable multipath until after the unit boots and then ignores the internal drives?

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• Bash Script - Traffic Shaping

  - by Craig-Aaron

  hey all, I was wondering if you could have a look at my script and help me add a few things to it, How do I get it to find how many active ethernet ports I have? and how do I filter more than 1 ethernet port How I get this to do a range of IP address? Once I have a few ethenet ports I need to add traffic control to each one #!/bin/bash # Name of the traffic control command. TC=/sbin/tc # The network interface we're planning on limiting bandwidth. IF=eth0 # Network card interface # Download limit (in mega bits) DNLD=10mbit # DOWNLOAD Limit # Upload limit (in mega bits) UPLD=1mbit # UPLOAD Limit # IP address range of the machine we are controlling IP=192.168.0.1 # Host IP # Filter options for limiting the intended interface. U32="$TC filter add dev $IF protocol ip parent 1:0 prio 1 u32" start() { # Hierarchical Token Bucket (HTB) to shape bandwidth $TC qdisc add dev $IF root handle 1: htb default 30 #Creates the root schedlar $TC class add dev $IF parent 1: classid 1:1 htb rate $DNLD #Creates a child schedlar to shape download $TC class add dev $IF parent 1: classid 1:2 htb rate $UPLD #Creates a child schedlar to shape upload $U32 match ip dst $IP/24 flowid 1:1 #Filter to match the interface, limit download speed $U32 match ip src $IP/24 flowid 1:2 #Filter to match the interface, limit upload speed } stop() { # Stop the bandwidth shaping. $TC qdisc del dev $IF root } restart() { # Self-explanatory. stop sleep 1 start } show() { # Display status of traffic control status. $TC -s qdisc ls dev $IF } case "$1" in start) echo -n "Starting bandwidth shaping: " start echo "done" ;; stop) echo -n "Stopping bandwidth shaping: " stop echo "done" ;; restart) echo -n "Restarting bandwidth shaping: " restart echo "done" ;; show) echo "Bandwidth shaping status for $IF:" show echo "" ;; *) pwd=$(pwd) echo "Usage: tc.bash {start|stop|restart|show}" ;; esac exit 0 thanks

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• Apache2 MPM-prefork MPM-worker multiple instances on same Ubuntu host machine possible?

  - by user60985

  I have a live Apache2/MPM-Worker instance running Django. I want to also run an Apache2/MPM-prefork instance to run some Drupal6 applications on the same host machine and utilize a vast selection of PHP modules that run on the prefork model. I plan to use my MPM-worker instance to reverse proxy to the Apache2-prefork instance for URLS starting with myhost.com/drupal6/. It seems theoretically doable/configurable by having the second Apache2-prefork instance configured to listen on an internal port, say 127.0.0.1:8080 and having my current Apache2-worker configured to proxy pass and reverse pass to it for the 'drupal6' URLs. However, how do I compile or install the apache2-prefork version so it has a different executable name than /usr/sbin/apache2, for example /usr/sbin/apache2p, and so apache2ctl has a different name, say apache2pctl, and that apache2pctl invokes the /usr/sbin/apache2p instead of /usr/sbin/apache2... and so on down the line (eg /etc/apache2p) so I can start and restart my two instances independently? As I understand it, no one executable of 'apache2' can be compiled with both the MPM-prefork and MPM-worker modules, so it seems I need two separate versions of the apache2 MPM flavors. But then I need to invoke and control them by separate names, I assume. I looked at the configuration options for apache2 and I am a bit queasy about compiling a second apache2 version with prefork because I am not sure I can set all the options so that none of my current apache2 files is overwritten. Is there a way? Is there a standard solution to separately installing and controlling prefork and worker apache2 executables on the same machine without them stepping on each other during installation or operation?

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• Solaris SMF to Upstart on RHEL6

  - by aaa90210

  I am planning a migration from Solaris/x86 to RHEL6. Part of this migration will be migrating services from SMF to the RHEL6 equivalent, which appears to be upstart. While init.d scripts still seem to be supported, I want to take advantage of a more sophisticated init daemon, especially for features like job supervision (restarting etc). I would like to gather some thoughts on a few points: 1) Is upstart an adequate job supervisor, i.e. does it preclude the need for stand-alone managers like daemontools/supervise? 2) Upstart scripts seem very bare-bones compared to a typical init.d script. If I was porting an init.d script to Upstart, is it OK to just "exec /etc/init.d/myjob start"? This include RHEL installed programs like httpd. 3) Does upstart do anything is regards to pid files, and what are it's expectations in regards to the forking model of the process? 4) Are there any straightforward guides to the process management aspect of Upstart...and by that I mean the conditions around controlling restarting? e.g. how many times to restart the process before it goes into a maintenance state, or to ignore errors/core dumps in child processes of the supervised process. Any other relevant ideas or guides would be appreciated. TIA

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• My Linux desktop sees my HDMI-connected monitor, but my monitor says "No signal"

  - by hrunting

  I have a Gigabyte H55M-UD2H motherboard and an Acer S271HL monitor. When I connect the monitor to the motherboard via VGA, signal works perfectly. When I connect the monitor via HDMI, the system "sees" the connection, but the monitor receives no signal (the monitor shows a blue box which reads "No Signal" and then the monitor goes into power-saving state). Some fun facts about this: if I hook a different monitor to this box via HDMI, the monitor receives the output without issue (same computer/motherboard, same cable, different monitor) if I connect a different computer to the monitor via HDMI, the monitor receives the output without issue (different computer, same cable, same monitor) no signal is received whether in the OS or in the BIOS there are no BIOS options for controlling video output other than for selection of onboard vs. PCI/PCI-E-based video card (the system has no dedicated video card installed) The box is running Linux, so I have the output of xrandr which shows the connection and the monitor modes detected via DDC: ~$ xrandr --prop Screen 0: minimum 320 x 200, current 1920 x 1080, maximum 8192 x 8192 VGA1 disconnected (normal left inverted right x axis y axis) HDMI1 disconnected (normal left inverted right x axis y axis) Broadcast RGB: Full supported: Full Limited 16:2 audio: auto supported: force-dvi off auto on DP1 disconnected (normal left inverted right x axis y axis) Broadcast RGB: Full supported: Full Limited 16:2 audio: auto supported: force-dvi off auto on HDMI2 connected 1920x1080+0+0 (normal left inverted right x axis y axis) 598mm x 336mm EDID: 00ffffffffffff000472ca028d128022 1c160103803c2278ca7b45a4554aa227 0b5054bfef80714f8140818081c08100 9500b300d1c0023a801871382d40582c 450056502100001e000000fd00384c1f 5311000a202020202020000000fc0053 323731484c0a202020202020000000ff 004c55573044303130383531300a01e5 020324f14f0102030405060790111213 1415161f230907078301000067030c00 1000382d023a801871382d40582c4500 56502100001f011d8018711c1620582c 250056502100009f011d007251d01e20 6e28550056502100001e8c0ad08a20e0 2d10103e960056502100001800000000 000000000000000000000000000000de Broadcast RGB: Full supported: Full Limited 16:2 audio: auto supported: force-dvi off auto on 1920x1080 60.0*+ 50.0 25.0 30.0 1680x1050 59.9 1680x945 60.0 1400x1050 74.9 59.9 1600x900 60.0 1280x1024 75.0 60.0 1440x900 75.0 59.9 1280x960 60.0 1366x768 60.0 1360x768 60.0 1280x800 74.9 59.9 1152x864 75.0 1280x768 74.9 60.0 1280x720 50.0 60.0 1440x576 25.0 1024x768 75.1 70.1 60.0 1440x480 30.0 1024x576 60.0 832x624 74.6 800x600 72.2 75.0 60.3 56.2 720x576 50.0 848x480 60.0 720x480 59.9 640x480 72.8 75.0 66.7 60.0 59.9 720x400 70.1 HDMI3 disconnected (normal left inverted right x axis y axis) Broadcast RGB: Full supported: Full Limited 16:2 audio: auto supported: force-dvi off auto on DP2 disconnected (normal left inverted right x axis y axis) Broadcast RGB: Full supported: Full Limited 16:2 audio: auto supported: force-dvi off auto on DP3 disconnected (normal left inverted right x axis y axis) Broadcast RGB: Full supported: Full Limited 16:2 audio: auto supported: force-dvi off auto on How do I get this monitor to recognize the output from this HDMI socket?

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• Resources for Smartphone Security

  - by Shial

  My organization is currently working on improving our data and network security due to increasing HIPAA laws and a general need to get a better grasp on controlling our health related information. We are a non-profit working with people with developmental disabilities so we handle a lot of medical related information. One area that has been identified as a risk is our use of smartphones, specifically at this time Windows Mobile 6.1 devices from T-Mobile. We do not utilize the VPNs on the phones so there isn't any way they can access our databases or file servers (username/password for VPNs is not the domain logons). What would be exposed however is the particular user's email account since you could extract out the username/password and access the email either on the device or on our web email (Exchange 2003) which could contain HIPAA protected confidential information about clients and services and this would be an incident that would have to be reported. What resources or ideas would help us secure these devices? I'm not worried about data interception (using SSL) but more about physical theft or loss of the device. Are there websites that I just have not found with guidelines and suggestions or particualar products that would help protect us? I also don't want to limit the discussion to windows Mobile either. I myself am looking at an android 2.0 device and there is always the eventual possibility we could get pushed to enable the VPNs. I know this is a subject that likely won't have any particular correct answer and it is something we should all be aware of since there devices are sitting outside of our immediate control most of the time.

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• Windows 2003 R2 zip program blocking EXE file

  - by Harvey Kwok

  I have a Windows 2003 R2 Enterprise Edition SP2 32-bit machine with all latest patch (as of 1-6-2011). It's a VM. I have a zip file, including a pdf file, a txt file and a exe file. If I copy the zip file onto the machine via a shared network drive, I can unzip all the files properly without problems. If I put the zip file on my web server and then I download it from there, I can only unzip the pdf file and txt file. The exe file is silently ignored. I searched the web and found somebody reporting similar issue on XP. If I right click on the zip file downloaded from the web server, at the bottom of the general page, it has a warning message saying that "This file came from antoher computer and might be blocked to help protect this computer" I understand that I can solve the problem by simply clicking the "Unblock" button and extract the file again. The things that bothering me is that why the warning message says "might be blocked"? I tried downloading the same zip file from the same web server on to my Windows 7 box with latest patch. It also shows the same warning message. However, even with the warning message, I can extract all the files properly without clicking the "Unblock" button. Is it a bug in Windows 2003 R2 SP1? Is there any security settings controlling this? How likely will the end user seeing this problem? I want to dig into this because I am worrying people downloading my zip file from my web server might see similar problems. The first thought coming to the user's mind will be the zip file is somehow corrupted. Honestly, I didn't know this "Unblock" feature in Windows before I run into this problem. EDIT I just tried it on another Windows 2003 R2 SP1 machine. The zip program doesn't block the EXE file on that machine either. Both Windows 2003 R2 SP1 machines are joining to the same forest.

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• Virtual Machine Network Architecture, Isolating Public and Private Networks

  - by Mark

  I'm looking for some insight into best practices for network traffic isolation within a virtual environment, specifically under VMWARE ESXi. Currently I have (in testing) 1 hardware server running ESXi but i expect to expand this to multiple pieces of hardware. The current setup is as follows: 1 pfsense VM, this VM accepts all outside (WAN/internet) traffic and performs firewall/port forwarding/NAT functionality. I have multiple public IP addresses sent to the this VM that are used for access to individual servers (via per incoming IP port forwarding rules). This VM is attached to the private (virtual) network that all other VMs are on. It also manages a VPN link into the private network with some access restrictions. This isn't the perimeter firewall but rather the firewall for this virtual pool only. I have 3 VMs that communicate with each other, as well as have some public access requirements: 1 LAMP server running an eCommerce site, public internet accessible 1 accounting server, access via windows server 2008 RDS services for remote access by users 1 inventory/warehouse management server, VPN to client terminals in warehouses These servers constantly talk with each other for data synchronization. Currently all the servers are on the same subnet/virtual network and connected to the internet through the pfsense VM. The pfsense firewall uses port forwarding and NAT to allow outside access to the servers for services and for server access to the internet. My main question is this: Is there a security benefit to adding a second virtual network adapter to each server and controlling traffic such that all server to server communication is on one separate virtual network, while any access to the outside world is routed through the other network adapter, through the firewall, and on the the internet. This is the type of architecture i would use if these were all physical servers, but i'm unsure if the networks being virtual changes the way i should approach locking down this system. Thank you for any thoughts or direction to any appropriate literature.

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• How to get rid of "Maxback Engine" for good?

  - by Jonik

  I used to have a Maxtor Shared Storage II network drive; it broke down long ago already. (Later I tried to recover some data from it, and partially succeeded, but haven't yet fully documented it on that question.) Anyway, I just noticed there are still some lingering bits remaining of the (thourougly crappy) software that came with the Maxtor device: a background process called "MaxBack Engine". I googled around a bit and found something related but not very useful: http://www.straitmac.com/jforum/posts/list/600.page http://discussions.apple.com/thread.jspa?threadID=725692 Under /Applications I found "Maxtor EasyManage.app" which I used to use for controlling the drive, and showed it some "rm -rf". Before deleting, I noted that the bundle did contain "MaxBack Engine.app" under Content/Resources. But still, after reboot, the "MaxBack Engine" process is back. I did notice though that it only appears when logging in with my usual user account; with another account it wasn't launched. So, dear Mac gurus, what could I do about this pest? I guess I could fall back to some Unix hackery and write a cronjob that kills any process with that name, but obviously it'd be nicer to be able to clean up from my computer everything left behind by Maxtor's piece of software.

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• Synergy Key Mapping

  - by Tauren

  I'm running a Synergy server on Ubuntu and a Synergy+ client on OSX. The server has a standard windows keyboard with shift, ctrl, windows, and alt keys. My MacBookPro has shift, fn, control, alt/option, and command keys. When I press ctrl-c, ctrl-v, etc, the appropriate copy/paste action doesn't happen on the Mac, but it does in Ubuntu. If I'm controlling the mac, and press alt-c, alt-v, then I get the copy/paste action. So I played around with key mapping in synergy.conf and found that the following allows me to do copy/paste with ctrl-c/ctrl-v: section: screens godzilla: mbp.local: ctrl = alt alt = ctrl end Is this all that I need to do? Or are there other mappings that will help as well? The synergy configuration page refers to the following key mappings. What are the equivalent keys for each of these on the Windows keyboard and Mac keyboard? What is a meta or super key? shift = {shift|ctrl|alt|meta|super|none} ctrl = {shift|ctrl|alt|meta|super|none} alt = {shift|ctrl|alt|meta|super|none} meta = {shift|ctrl|alt|meta|super|none} super = {shift|ctrl|alt|meta|super|none} Thanks!

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• Group Policy for DNS Server Addresses

  - by John

  This question deals strictly with the methodology of using Active Directory to publish DNS settings and controlling the DNS server address order to domain attached clients. This is not asking about if this is the right function, role, or best use of group policy; but rather, how to make it work. I would like to be able to publish in group policy DNS addresses and possibly control the order in which the client consumes the addresses. I have tried following the information from this site without success. I set the following setting within group policy, but the client never shows the settings within the TCP/IP properties. Computer Configuration/Administrative Templates/Network/DNS Client/DNS Servers I did list them as a single space separated list. For example, the following: 192.168.0.1 192.168.10.3 192.168.34.2 192.168.2.67 192.168.56.99 192.168.99.23 This would be for Windows 7, Windows Server 2003, and Windows Server 2008 clients. I am not sure what I am doing wrong or how to get this to work. Am I missing a setting? Do I need to set something differently?

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• 4.4.1 Timeout in 10 minute intervals SMTP on batch email jobs

  - by TEEKAY

  I am running a job that uses SMTP and it can run in excess of an hour, emailing the entire time. It's not my code but a workflow based app so I just get a form to configure the mail server, subj, msg, etc and can't see it's implementation. I know it is .NET and SmtpClient. I have been seeing 4.4.1 timeouts every 10 minutes being reported by the application as the response from the server. The # of emails in those 10 minute sessions are variable, between 100 and below 150 which leads me to ask about the 10 minute timeout time specifically. I have found there are several exchange properties (though I don't know what version they are running) that set timeout limits. (http://technet.microsoft.com/en-us/library/bb232205%28v=exchg.150%29.aspx) Would those values for ConnectionInactivityTimeOut and ConnectionTimeout be the controlling the timeouts? and finally I would like to ask if exchange considers the consistent connection(s) it kept receiving from the same source as one continuous connection and cause the timeout each 10 minutes and cause the timeout? I am using a static ip of the mail server. Thanks if anyone can shed any light on my problem. EDIT - It is my belief that the library is just keeping the connections around and isn't wrapped in any cleanup code or using statement. That said, I still haven't made any progress on this issue in the last year and just requeue the failed ones as I see them.

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• Combining AD permissions with FTP

  - by user64204

  We're using Windows Server 2008 with Active Directory controlling access to a network share. We've setup FTP so that people can access that share from outside (we used to use the PPTP VPN but for various reasons we need to switch to FTP). So far here is what we've managed to implement on the FTP: -The network share is used as the FTP root (defined as a UNC) and that is working fine. -AD authentication is working fine (wrong password and you stay out, good password you're in, password management in AD correctly synched with the FTP). -AD permissions are failing: the AD permissions on the content of the FTP root are ignored: it's either a user only has read or write access, but this applies to the whole FTP root, which obviously isn't suitable since that FTP root is initially our network share and files/folders have different AD permissions depending on people's groups... Whether we set the permissions through the share OR the FTP management interface, AD permissions are never enforced. Q1: Is that normal? Q2: If so what solutions exist to combine AD permissions with FTP on MS server 2008? Q3: If not, where should I look to fix the configuration?

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• What is the oldest hardware still in production use? How is it kept running?

  - by sleske

  In the spirit of the question What is your oldest hardware that still works?, I'd like to ask: What is the oldest hardware you know that is still in production use? And what challenges did you (or someone else) face in keeping it running (scarce documentation, no support, no spare parts available...)? Most organizations will retire / upgrade software and hardware after 5-10 years, but sometimes old software is kept running on old boxes, because it "just works". I once worked at a client site that was running a critical piece of (in-house developed) business software on a single server running HP-UX. The server was old (ca. 12-13 years), but fortunately still running without problems; however, getting spares would have been very difficult, and since software installation was undocumented, any significant system changes or even new hardware might have caused significant downtime and data loss. We eventually managed to replace it, but this is not always possible. I also read that many organizations still run decade-old mainframe hardware, particularly for highly customized systems controlling industrial machines or power plants. Which old hardware have you encountered? How did you manage these challenges? Related question: http://serverfault.com/questions/82467/should-old-servers-be-retired

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• How is network mounted software executed?

  - by CptSupermrkt

  I would like to understand how network mounted software works. For example, at my place of work, we have a software server. Each client machine (hundreds of them) automatically mounts directories from the software server on boot. For example, a program like Matlab is installed just once on the software server, but each client machine can start up an instance of Matlab. What is going on under the hood? Let's say I run /opt/bin/matlab and /opt/ is mounted from the software server, what happens when I press Enter to execute matlab on a client machine? The process is on the client machine, and I've already narrowed down that there isn't any implicit or hidden file transfer (i.e. copying matlab to my machine temporarily for that session) by running matlab on a computer with nearly zero disk space (i.e. not enough room to transfer). Since Matlab was installed on the server, how is my client computer executing it? What mechanism is controlling this? What is happening behind the scenes?

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• Enter network credentials as part of batch script

  - by Michael

  WinXP: I have several system services that are needed to run some machinery in my lab. The machine these services are running uses a lab login that has administrator rights. Our IS department, unfortunately, has it set up where at some point during the night the login "loses" the privilege level to start/stop these services. The account stays logged in, but the software controlling my hardware becomes unresponsive. In order to get things back up and running, I have to stop the system services and restart them. Because of the security settings, however, I have to re-enter the user password to start the service (even though the user was never logged out). That, I get the "This service cannot be started due to a logon failure" and I have to enter the password. What would be ideal is to have a batch script run before anyone gets into work that stops all of the necessary services, enters the user credentials when prompted, and then restarts them so that everything is ready for first shift to run. I assumed that using the Task Scheduler in Windows would work as it allows you to run batch files with a user's name and password, but this didn't seem to do the trick. With this setup I would arrive to find that all the services are stopped but not started again. (Presumably because the authentication failed.) The batch file is about as simple as it gets, all I have is: net stop "Service1" net stop "Serivce2" etc., then restart in reverse order based on dependency: net start "Service2" net start "Serivce1" What would it take to accomplish what I'm trying to do and restart the services?

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• WIN7 constant BSOD 0x7B on boot, not producing any dump files where to go from here?

  - by prayingpantis

  So my one win 7 pc has been getting a BSOD on boot (roughly a sec after load screen starts) after a power failure. The complete stop code is 0x0000007B (0x80786B58, 0xC0000034,0x00000000,0x00000000) I've searched for quite a while now on the net and it seems like most people gave up after gettting 0x7B and no dump files. What I've tried so far: startup repair - reports it cannot repair computer automatically. BadPatch is reported somewhere in a problem signature contained in the problem details. startup repair with a WIN 7 CD - also fails, I can't recall what the error was, but it was not the same as the error produced with the start up tool shipped with the version of WIN 7 installed on my machine (I think the text had something ACL-ish contained in it) used a boot disk (Hiren's boot iso) - I used it to enable the CrashDump registry key and then after BSOD, read the HDD's dump locations but it was empty. Note, I'm quite sure the registry keys I edited are the correct ones, since the reboot on BSOD option was enabled by default and after I changed the regkey controlling this functionalitty to 0 the BSOD stayed after I booted again. check disk - works and returns no problems, also it seems I'm able to access all my files on the HDD. mem test - works and returns no errors So I'm not sure what else I can do to figure out what is the problem here. I read somewhere that you can use WINDBG to remote debug another PC, but I'm not sure if this is possible since the OS isn't even loaded yet? Also the last driver change I made on the system was installing a video driver, but I had no problems with it and were able to reboot several times until the power outage happened and the BSOD appeared. Any help or guidance for a way to DEBUG this problem would really be appreciated (I'm not really that keen to try a whole bunch of random fixes, I'd rather try and narrow down the problem first).

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