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• Unable to open up port 80 on EC2 using elasticfox

  - by uswaretech

  I have launched an instance of EC2. Initially the security group I created did not have the port 80 open. I sshed and installed Apache etc, and now want to open port 80. I am using elasticfox. So I go to Security Group - [My Group name] - Grant new permission Open up the port 80(Http with TCP) for network range 0.0.0.0/0 Now my assumption is that these ports should be opened up on the instance, but the instance is not responding on the allocated IPs, public DNS entry. What should I do next?

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• Ubuntu 9.04 Cannot Connect to visible open wifi ap (reason 6)

  - by Andrew Bolster

  I'm travelling currently so the last network i connected successfully to was my home wpa-psk network. I hadn't tried anything until i got to my accommodation that is an open network (that I'm on now on the Win7 partition on my laptop). The network (and a similar archetypical 'linksys' open network, aswell as some protected local networks are correctly displayed in network-manager and upon selection, it happily spins around to its hearts content for a while before saying 'no chance boy'. /var/log/syslog spills out the usual combination of wpa_supplicant and kernel messages, the most interesting of are that the kernel deauthentication reason 6 response. 6 apparently means class2FrameFromNonAuthStation...Client attempted to transfer data before it was authenticated. Anyone seen anything like this? I've already tried going closer to the router to no avail. I don't remember seeing this any other time I've connected to a open AP, even if that AP is far away. (Signal strength for this AP is good, kismet says its around -57dBm, well above the threshold of -80dBm, and I've tried all the suggestions from the 'Related Questions'

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• Windows 7 PC browsers having trouble to open certain sites but not others

  - by user55345

  Hi, My Win7 PC these days acting very weird: Examples: It can not open bing.com, alexa.com, msdn.microsoft.com (blank page or page can not be found); It can open zdnet.com but lost all CSS layouts and pictures; It can open stackoverflow and Google no problem; I tried all three browsers (IE8, Chrome, Firefox 3.6) same thing. I didn't change anything on this PC in days. This PC does have Anti-Virus installed and updated. I'm also pretty sure it's not a network problem, because my other laptops are just fine at the same time. The only thing I can think of is it might be some auto-update stuff underneath happened without my knowledge, but I have no idea where to troubleshoot? Please shed some lights for me? Thanks a lot.

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• Vim - dynamic list of open buffers in a window

  - by asfallows

  I've investigated a few ways to maintain a list of open buffers in Vim, and some of them are very good, but none of them seem to behave the way I'd like. It's very possible that nothing like what I want exists, and it can't hurt to ask. I've been using NERDTree in GVim, and I like the idea of putting the information in a slender left-hand window. I've put together a handy diagram for how I'd like my environment to look: |--------|---------------------------------------| | | | | | | |NERDTree| Windows | | | | | | | | | | |--------| | | | | | | | | List | | | of | | | Open | | | Buffers| | | | | | | | |--------|---------------------------------------| So my question is: Is there a vim-native or plugin-enabled way to maintain a list of currently open buffers and select/edit/close from that list, inside a window similar to NERDTree? I understand that this approach may be incongruous with the Vim way of doing things, and if you feel like I'm missing something about how to manage multiple files in a Vim session, please leave a comment with suggestions!

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• iptables question

  - by RubyFreak

  i have a small network, with one valid IP and a firewall with 3 network interfaces (LAN, WAN, DMZ). I want to enable PAT on this valid IP to redirect http traffic to a server in my DMZ. (done) I want to enable MASQ on this ip from traffic that comes from my LAN (done) I want from my LAN as well to access my http server at DMZ. (partially) Question: in the above scenario, i cannot from my LAN, to access my http server in the DMZ, since it has the IP used by the MASQ (the only valid ip that i have). What would be the best option to solve this problem? network interfaces: eth0 (WAN) eth1 (DMZ) eth2 (LAN) /sbin/iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE /sbin/iptables -A FORWARD --o eth1 -d 2.2.2.2 -p tcp --dport 80 -j ACCEPT /sbin/iptables -t nat -A PREROUTING -i eth0 -d 1.1.1.1 -p tcp --dport 80 -j DNAT --to 2.2.2.2 /sbin/iptables -A FORWARD -i eth0 -o eth1 -m state --state RELATED,ESTABLISHED -j ACCEPT /sbin/iptables -A FORWARD -i eth1 -o eth0 -j ACCEPT /sbin/iptables -A FORWARD -i eth2 -o eth0 -j ACCEPT

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• Design Question

  - by dturner71

  Can I have two independent Connection servers attached to the same vCenter server? Here's my scenario. I'm setting up View 4 to provide desktops to two seperate Windows domains that are on different IP subnets seperated by a firewall. One cluster of physical servers, one vCenter server, linked clones. As I understand it View Connection server has to be a member of a Windows domain in order for quickprep to work. So the way to provide desktops to both Windows domains is to have a Connection server in each one right? Then open ports in the firewall so the Connection server from the other subnet can communicate with vCenter. Any reason why this won't work? Or is there a better way to accomplish it?

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• Motherboard RAM question.

  - by winterwindz

  Firstly I'm new at this. Not a very computer-ish person. So I very much apologize if this is not the right place, but here it goes.. My Motherboard is an Asus P5LD2-SE. I'm running in Win 7 Ultimate 32-bit(x86) OS, 1GB RAM (2x512 MB). I'm planning to upgrade my OS to 64-bit and because I know my Motherboard is a dual-channel, I bought a dual-channel 2 GB RAM (2 pcs). My question is; am I still able use my old RAM ones, since it is 4 slots..? Which in the end will show 5GB. Is it possible? Thank you for your time. =)

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• DNS Zone file and virtual host question

  - by Jake

  Hi all, I'm trying to set up a virtual host for redmine.SITENAME.com. I've edited the httpd.conf file and now I'm trying to edit my DNS settings. However, I'm not sure exactly what to do. Here's an snippet of what's already in the named.conf file (the file was made by someone else who is unreachable): zone "SITENAME.com" { type master; file "SITENAME.com"; allow-transfer { ip.address.here.00; common-allow-transfer; }; }; I figure if I want to get redmine.SITENAME.com working, I need to copy that entry and just replace SITENAME.com with redmine.SITENAME.com but will that work? I was under the impression I needed a .db file but I don't see any reference to one in the current named.conf file. Any advice would be great and if you need more info to answer the question, don't hesitate to ask.

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• Stupid question: prevent file from being changed under linux

  - by Josh

  Ok. Stupid question. I have forgotten what this is called and without remembering the name the search function on the site and on google is failing me. What's the command under linux to mark a file as "locked"/to prevent any changes from being made to it? I'm not talking about chmod. There's a property that can be set (again the name escapes me at the moment) which prevents even processes running as root from changing a file. What is this called and how do I set it?

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• Broadband Traffic Question

  - by rutherford

  I have a broadband ADSL line with plus.net in the UK. Having checked the modem there is no firewall or any weird features enabled. But since I arrived at the apartment (the broadband already being installed), I cannot log into Twitter nor update any of my wordpress blogs (I can browse them and log in, but cannot save any edits or new posts). It only seems to affect these two sites in their unique ways. If I take the netbook I use in this place out to say a McDonalds or some other wifi access point then these sites work fine again. Anyone know what could possibly be preventing access of the pages in question? The only thing common to these pages are the POST response they are expecting. But POST form submission works fine on other sites...

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• MSDTC Port 135 open bi-directionally

  - by Stephen Lacy

  I have two servers, a web application server and an SQL Server database running on its own server. I have a firewall between these two servers. Do I have to open port 135 on both the SQL Server and the Web Application Server. Does the SQL Server open its own connection to the Web Application Server on port 135 or any other port? Do I have to in component services point the Web Application Server MSDTC at the SQL Database Server? If the firewall is completely open, the settings in component services set to allow remote connections, remote administration etc is there any other settings that need to be changed in order to allow remote connections to the SQL Server MSDTC?

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• Search for files which will open a certain application in Mac OS X

  - by Jacob Palme

  In Mac OS X, when you doubleclick on a file name, that file will open with the application which created the file. So there must be stored, somewhere in the file description on a Mac OS X file, information on which application created this file. Note that this is not the file extension, the file can have any extension, or no extension at all. Two questions regarding this information: (1) How can I search for all files which will open a specific application? (2) How can I see, and change, the application which a certain file will open?

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• user related commands hang on open("/etc/localtime", O_RDONLY) = 4 in CentOS 5.5

  - by fuzzy lollipop

  I am logged in as root when doing a strace -etrace=open adduser git it hangs on open("/etc/localtime", O_RDONLY) = 4 for like 2 minutes then continues on. Also when I try and strace -etrace=open su git it just hangs at the same place as well, I can't login via ssh as the git user either. Some other users I created work just fine, like su tomcat and I can ssh in as tomcat as well. I deleted the file that was at /etc/localtime and replaced it with a symlink to ln -s /usr/share/zoneinfo/US/Eastern /etc/localtime and it didn't change the behavior in any way.

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• OSSIM - Snort/OSSEC/Nagios Logging Config Question

  - by user15736

  Quick n00b OSSIM question. I've looked around but haven't found exactly what I'm looking for. I currently have a Nagios, OSSEC, Nessus, and Snort server and I want to keep those servers active but just ship the logs to the OSSIM server and have it do the correlating and graphing. Can that be done? Everything I've seen is putting the various software functions actually on the OSSIM box but I don't want to do that. I'm running CentOS on all of the systems. Thanks.

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• Open original Microsoft Office document (not "version 1") on Mac OS X Lion restart

  - by FlyingMolga

  My MacBook Pro running Lion has been frequently freezing lately, and I've had to restart with the power button. When Lion starts up again, the Microsoft Office applications that were running start and load different autosaved versions of the documents I had open (i.e. it does not open abc.xlsx but [version 1] of abc.xlsx). Sometimes it also opens the original files. Several times I've inputted data into these "version 1" files, only to try to save it and realize that it isn't the original file and is sometimes missing data that is contained in the original file. Is there any way to make autorecover open the actual document with the unsaved changes, instead of making a new temporary version?

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• Looking for an open source real-time network analysis program

  - by JrSysAdmin

  Can somebody recommend an open source real-time network analysis program? What I'm looking for the program to do is display a graph of bandwidth usage by IP within our internal network that can quickly be viewed any time we need to (typically when we want to quickly find out who is utilizing high amounts of bandwidth and slowing down the network). We ideally simply want to hook up a monitor on the wall of our server room to a system whose NIC will be in permissive mode to log all network activity in a visual manner which can easily be seen and running 24/7. Prefer open source as I do not have a budget for this project and prefer open source projects in general. I'd also prefer for this to be available for CentOS but any linux distro or Windows OS would be acceptable. Thanks!

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• Mail Secure & Stable Open Source Mail Server

  - by Fanar ALHAYALI

  I have asked question on http://stackoverflow.com/questions/9868426/i-need-to-know-which-email-server-i-have-to-use and someone tell me my question would be better on serverfault. I know that this is a common question and asked many times. but there are so many available mail servers that i am not able to decide the one. Kindly tell that which is the Secure, Stable and fast open source mail server for Centos or Redhat Server. Is there any guide which can be used to deploy the mail server with all its components e.g. smtp, pop3, imap, spam, calender server, antivirus, DNS Setting. Currently I'm using sun messaging V6 which installed on Solaris 10 and my boss ask me to make a report for the best mail server today in the marketing? I tried to have a look on Google but I couldn't find interesting information for my report. Any advice would be appreciated.

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• Open file without specifying exact location

  - by person

  Say I have a file in some obscure directory that I want to open and edit. I don't want to do something like this... vim ~/foo/bar/blah/doh/ugh.txt I'd rather be able to say find this file and open it. I know there are commands like locate and find to find a file or directory, but I'm not sure whether these can (or even should) be utilized in what I'm trying to do. Basically, what is the simplest way to open a file with a program w/o specifying its exact location? (In cases where there isn't another file with the same name in the entire system, and cases where there are multiple).

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• How to open a EAR/WAR file in windows 7

  - by Calm Storm

  I have a few EAR/WAR files which are Java archives and I would like Windows 7 to open these files the way it opens a file with extension zip. So I open this war file and in the list of softwares available with "Open" I see MS Word, Notepad etc but nothing about CompressedFolderView. I also tried manually specifying the location of exe (I thought this was expand.exe) but that does not work. Does someone know if I can make this work? Or should I use Winzip or some such utilities?

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• Batch file to open multiple cmd prompts

  - by JHarris

  I am trying to write a batch file that will automate the following manual process: Open a new cmd prompt (prompt1) Run a bat file (b1) Run a program (that will continue to run) Minimize prompt1 Open a new cmd prompt (prompt2) Run a bat file (b1) Run a different program (that will continue to run) Minimize prompt2 I've found ways to open multiple instances of cmd to run different things, but after I've run the first thing (b1), I then need to run a program in that same cmd window. I currently have start /min cmd /k C:\Users\db2admin\python_environment\Scripts\activate.bat start /min cmd /k C:\Users\db2admin\python_environment\Scripts\activate.bat This opens the two windows and runs the bat, great, but now I need to execute another command (running a python file) in each of the cmd windows. How do I send commands to each prompt?

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• How to force "Windows Explorer" to open new folders in the same window

  - by yoshiserry

  I have been searching for an answer to this question for a very long time. I have checked the "open folders in the same window" radio button in the general tab of folder options. I have also been told to uncheck the launch as seperate processes button in the view tab of folder options. I'm thinking some how this must be a registry issue. Anyone know a registry hack that will fix this problem and force windows explorer to open folders in the same window. I'm sick to death of having so many windows open. Im running Windows 7 Ultimate Beta 7100.

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• Motherboard dual gfx power question

  - by user33931

  1st, I am software guy. I do not do hardware. So I know to you hardware geeks, this is a dumb question. I just inherited a box with a ASUS P5GZ-MX mother board. I have attempted to install two nVidia PCI video cards. I put a 750w power supply in the system to be sure I have enough power. With no extra video cards, the 3.3 v shows normal. When I put one card in, the 3.3 goes to 3.5-3.6 and flashes red (over voltage) about 30% of the time. When I put the 2nd card in, it goes to 3.73 v and stays red all the time. Any Ideas why the voltage goes up when I add cards instead of going down? More Importantly, is this dangerous to the system?

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• Too many files open issue (in CentOS)

  - by Ram

  Recently I ran into this issue in one of our production machines. The actual issue from PHP looked like this: fopen(dberror_20110308.txt): failed to open stream: Too many open files I am running LAMP stack along with memcache in this machine. I also run a couple of Java applications in this machine. While I did increase the limit on the number of files that can be opened to 10000 (from 1024), I would really like to know if there is an easy way to track this (# of files open at any moment) as a metric. I know lsof is a command which will list the file descriptors opened by processes. Wondering if there is any other better (in terms of report) way of tracking this using say, nagios.

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• Windows Licensing Question [closed]

  - by user64300

  Hi, This is a fairly simple licensing question that has me confused. We have 3 servers: SERVER1,SERVER2,SERVER3 running on Windows Server 2003. We have 25 users. Do I need to buy 75 user licenses for the users to access all the servers or can I get by with 25? If I then upgrade 1 server to Windows Server 2008, do I need to buy a new set of user licenses. If I then upgrade the other 2, do I then need to buy 2 more sets of user licenses? Sorry for the confusion!

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• cannot open file cua in second instance of emacs

  - by Toddeman

  i get the following error when trying to open a second instance of emacs: File error: "Cannot open load file" , "cua" I guess I don't HAVE to open another instance of emacs (that is the beauty after all), I was just trying to keep some things separated (specifically work - like code and debug - and play - like news). Would there be any reason I could not open two instances of emacs if I use cua.el?

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