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• Access losing db connections

  - by Dwight T

  I have a weird problem going on at work. People have been using MS Access to connect to sql server db and lately people are getting sporadic problems with connecting to the servers. It's not always the same users and it's not always a problem, which makes it a real pain to try to solve. One example of a related problem. A person has a linked table to a table and she would filter the table or write a query on the table to return where itemsku = 'ABCD1234'. It would return one record but the ItemSku LMKN7486 and everytime it would return the wrong record but consistently the wrong record so itemsku abcd1234 always returned LMNK7486 One would think it might be a driver problem, but it also could be a user problem. Just posting the question to see if anyone else has had similar senerios. Thanks

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• Is there a security risk for allowing people to set their DNS so their own subdomains can be route to my server?

  - by DantheMan

  Lets say that I have a web application, built in Django and deployed with Nginx. Is it a good idea to offer a service that allows customers to request that a subdomain can be pointed at it. I figured this: If I dont allow this, then some companies wont want to access the service from http://mydjangoappmadeupname.com/bigcorporation/ They would rather access it through http://service.bigcorporation.com That would effectively mask that they are using an outside resource. Is there a significant risk that I am overlooking? Also do you think it would be easier to just set things up in Django to handle it, allowing Nginx to accept all domains and then pushing them to Django which would filter out if they are allowed or not, or would it be better to just update my Nginx log each time a client wanted this changed?

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• How to change default permission for uploaded files in apache with mounted webroot?

  - by faridv

  I have an ubuntu server 11.10 with apache 2.2.20, php 5.3.6 and an installation of Joomla cms. I have used an extra hard disk as my web server storage and mounted it into /data/www/ (I hope it's not where my problem us!). I've set permission of all files and folders in my web root to 755 and user groups for them is set to [default ubuntu user(in my case radio)]:www-data. In past days I had serious problems with joomla not showing new uploaded images and other files and also I can't install any extensions. After hours of searching I found out that uploaded files don't have appropriate permission (they are -rw-------) and Joomla application cannot read, copy or move them after upload. I’m wondering how can I set a default permission so all files that I upload use it? PS: I’ve tested umask but it did nothing. I think it has nothing to do with my problem.

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• windows 2008 always keep local dns in first

  - by user3085220

  I have a windows 2008 system and it always keep ::1 in first of the dns setting. I can see the following in "ipconfig /all": DNS Servers . . . . . . . . . . . . : ::1 8.8.8.8 8.8.4.4 and "Obtain dns server address automatically" option in network interface setting is disabled. I installed active directory once and uninstalled now, I think it's the reason. But I can't find any answer from google or bing how to fix.

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• How important is it to install on the program files folder?

  - by eran

  In a proper installation of an average software, its executables would be in the program files folder; its user data in the user's application data folder; it's non user specific data in the all users application data folder; and it should usually be able to run under non-administrative privileges. These guidelines could easily be ignored on XP, but they are an issue on Vista and 7 due to UAC. We're on the verge of releasing a major version of our software. It's a CMS, used by our clients as their main work tool, and their IT staff are well familiar with it. If we want to be fully compatible with Windows 7, we have to make quite a few changes, and we're already on a tight schedule. Question is: we can easily have our clients install our software outside of program files, or have them run it as administrators. I think it's wrong, but I need some ammunition: why should we install on program files, with all the limitations that come with it?

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• Hostname Problem On WHM / cPanel Installation

  - by Eray

  My CentOS 5.6 server's hostname was "centos" . And then i change it to my domain : hostname domain.com And i started to installing WHM / cPanel as explained in here : http://etwiki.cpanel.net/twiki/bin/view/AllDocumentation/InstallationGuide/InstallingCpanel It's installed very well. And the i reboot my server. After rebooting, i was execute this command for open WHM's 2087 port : iptables -I RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 2087 -j ACCEPT Now i'm trying to browse domain.com:2087 i'm getting Server (centos) not found .I noticed it's forwarding to my old hostname (centos) . And then execute this command to verify me hostname hostname it's returned "centos" again. I'm not sure, why it's returned to old hostname. (I think it returned to old hostname after rebooting) . I'm changed it one more time : hostname domain.com Finally, now my hostname is domain.com . BUt still i'm getting centos server not found error. This is result of iptables -L command. P.S. : domain.com/cpanel is working

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• McAfee Secure Messaging Service / Postini: false positive?

  - by Martin

  Hello, I'm puzzled by this email message that gets quarantined by McAfee Secure Messaging Service (it's based on Postini) for no reason that I can think of. Here are the Postini headers: X-pstn-2strike: clear X-pstn-neptune: 0/0/0.00/0 X-pstn-levels: (S: 0.02932/98.63596 CV:99.9000 FC:95.5390 LC:95.5390 R:95.9108 P:95.9108 M:97.0282 C:98.6951 ) X-pstn-settings: 3 (1.0000:1.0000) s cv gt3 gt2 gt1 r p m c X-pstn-addresses: from [db-null] X-pstn-disposition: quarantine I read the docs (http://www.mcafee-sms.com/webdocs/admin%5Fee%5Fmcafee/wwhelp/wwhimpl/common/html/wwhelp.htm?context=MACAFFHelp&file=header%5Foverview.html#951634) and in short, the x-pstn-settings header tells me that NONE of the filters was triggered, but the x-pstn-levels header tells me that the final score (0.02932) is low enough to classify the email as bulk/spam. Can anyone explain to me why the final score is so low when none of the filters were triggered? Does anyone have any suggestions on how to prevent this from happening? Regards, Martin

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• WEP authentication suddenly failing in Ubuntu

  - by kellishaver

  I'm running Ubuntu 9.10 and after a recent reboot, I'm now unable to authenticate to wireless networks using WEP encryption. I can connect fine to open networks (no idea about WPA). When trying to connect via WEP, I'm continually prompted for the network key, which I know I have entered correctly (and should have been/is saved in my keyring anyway). Everything had been working fine until the reboot. No updates had been installed or configuration changes made. Hardware-wise, everything looks fine (http://pastebin.org/113777), and the fact that connecting to an open network works just fine leads me to think this is a software issue. I just don't know where to begin fixing it. Any insights would be greatly appreciated.

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• RemoteApp cannot connect to webapp

  - by user58505

  I have just set up a Server 2008 R2 machine with Remote Desktop Services. It's all running on the one server, just for a single application, which works fine locally and when using Remote Desktop Web Access on the local network. However, when accessing it over the Internet, you can log on to RD Web Access fine, but when running the RemoteApp you get the message: RemoteApp Disconnected The remote computer could not be found. Please contact your helpdesk about this error. The application and all Remote Desktop services are on a single machine. I have purchased and installed a GoDaddy Cert. It works like a charm in the local network, but I get the above message when trying to access through rdweb How can I enable the RemoteApp to function outside the local network? I think there is one or 2 steps I left out??.. Please help...

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• Laptop screen brightness stuck

  - by Bart van Heukelom

  I can no longer adjust the brightness of my laptop screen, it's stuck at the lowest. In Linux, the brightness adjustment keys (Fn + F4/F5) still work, since a brightness popup shows and the meter bar changes, but it does this in a strange way. Starting at 100%, each successive press of the "lower brightness" button moves the bar to: 67% 50% 0% 26% 12% Or another random pattern like that. The problem is not Linux however, since I can't change the brightness from Windows (7) either. Where do I even begin to look? Since the problem does not seem be OS-specific, I've searched in the BIOS, but it has no option like that. How did this happen? I think it's been this way since when I lowered the brightness to 0%, then pressed the "lower brightness" key again. Not sure about that though.

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• interesting uses for a headless host running Ubuntu.

  - by Manuel

  Hey! So, I have configured a pc with no monitor, keyboard or mouse running Ubuntu. I use it as a ssh server, file backup, web server, etc. Though, it seems as if I could use it for sooo much more. The problem is I can't think of many more uses. What interesting uses of a headless host have you heard of? Is there a cool trick you want to share? Thanks! Manuel

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• Use Outlook 2007 to connect to mail using active sync protocol

  - by Dan

  Has anyone tried connected outlook(I am running v2007 on Windows 7) to a mail service using the MS Exchange Active Sync protocol? I know it is intended for mobile devices, but to me it looks like it is becoming the latest 'de facto' mail protocol for email/calendar/contact sync'ing due to the iPhone's support for it. I just think it would be an elegant solution to get my lotus notes mail in outlook(my company uses lotus notes with traveler service installed that exposes mail over the active sync protocol so I can currently read my notes mail via iPhone). This solution would probably eliminate the need for all the hacks needed to connect outlook to 'X' mail (Gmail, notes, etc) So, maybe someone out there has tried this or knows how to do it before spend time on more researching this. Thanks!

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• Configuring multiple domain in nginx in one file

  - by user22695

  I am still newbie configuring nginx. Is it posibble to configure multiple domain in one file and they share mostly the same config? For example I want to configure two domains that based from one app and one domain need basic auth, the other doesn't. I would like to do something like this, but I think this does not work: sites-enabled/mysite server { listen 127.0.0.1:80 default_server; server_name www.mysite.com; include sharedconf.conf; } server { listen 127.0.0.1:80; server_name www.mysite.co.jp; auth_basic "restricted"; auth_basic_user_file /etc/nginx.htpasswd; include sharedconf.conf; } sharedconf.conf location / { proxy_pass_header Server; #... bunch of config line ... }

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• Implementing dry-run in bash scripts

  - by Andrei Serdeliuc

  How would one implement a dry-run option in a bash script? I can think of either wrapping every single command in an if and echoing out the command instead of running it if the script is running with dry-run. Another way would be to define a function and then passing each command call through that function. Something like: function _run () { if [[ "$DRY_RUN" ]]; then echo $@ else $@ fi } `_run mv /tmp/file /tmp/file2` `DRY_RUN=true _run mv /tmp/file /tmp/file2` Is this just wrong and there is a much better way of doing it?

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• In Varnish stats, what does "Backend conn. reuses" and "recycles" mean?

  - by electblake

  I have varnish installed and I think it's working properly (not sure if it matters but I am using iptables reroute method to route ports incoming:80 > varnish:8080 > apache:80 Anyway, In varnishstat I see a pretty high Hitrate average (60-80%) which I am working on but I am unclear at what all of the stats presented by varnishstat Specifically the following Backend stats: 380 0.00 0.26 Backend conn. success 10122 15.00 6.85 Backend conn. reuses 267 0.00 0.18 Backend conn. was closed 10391 15.00 7.04 Backend conn. recycles I've read a blog post called "Varnishstat for dummies" which outlines a lot of details of varnishstat (I recommend it for beginners) but it does not go over these Backend stats. Feel free to explain here or link to a resource I've missed :) thanks!

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• Open Microsoft Publisher Document on Linux

  - by Peter

  I'm pretty sure the options consist of Just don't do it (use a nice open standard file format). Not great when someone sends you something. Translate the format on Windows. I think you need Publisher, the viewer won't even print. But you can download a trial version for a once off (been there, done that). Submit the file for online translation to PDF. www.pdfonline.com/convert-pdf/ Use a Windows VM, wine, crossover office, Win4Lin, or otherwise run Publisher "under" linux. What I really want to do is convert it to something nicer natively under Linux.

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• Apache 2.2.16: client denied by server configuration

  - by Viktor

  I have problem with my server configuration. I use Apache 2.216, PHP 5.3.3 and wordpress 3.4.2 with Shopperpress. Time to time I receive error "client denied by server configuration: path/to/file" in apache log file. It is path to _tbs.php file, but it is not problem in rights of file, because this file is called 12 times on page for getting thumbs of photos and there is error only several times. I think that it has no connection to concrete photo, because once this photo is displayed corectly and next time same photo produce error. Do you have any idea what can be reason? Thank you for all advices. Viktor

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• Http 400 'Bad Request' and win32status 1450 when larger messages are sended to a WCF service

  - by Tim Mahy

  we sometimes receive Http 400 bad request resultcodes when posting a large file (10mb) to a WCF service hosted in IIS 6. We can reproduce this using SOAP UI and it seems that it is unpredictable when this happens. In our WCF log the call is not received, so we believe that the request does not reach the ASP.NET nor WCF runtime. This happens on multiple websites on the same machine each having their own application pool. All IIS settings are default, only in ASP.NET and WCF we allow bigger readerQuota's etc.... The win32status that is logged in the IIS log is 1450 which we think means "error no system resources". So now the question: a) how can we solve this b) (when a is not applicable :) ) which performance counters or logs are usefull to learn more about this problem? greetings, Tim

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• Warning: DocumentRoot * does not exist on Centos 6

  - by user1213807

  My virtual hosts lines: <VirtualHost *:80> ServerAdmin [email protected] DocumentRoot /www/docs/example.com ServerName example.com ErrorLog logs/example.com-error_log CustomLog logs/example.com.com-access_log common </VirtualHost> And when I apache restart (sudo apachectl -k stop) get this error: Warning: DocumentRoot [/www/docs/example.com] does not exist I've checked some ways: All files and directories permissions is OK, everything 755. I think, maybe this error about SeLinux and disable it. But not working. Still same error. How can I fix this problem?

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• How many users are "many users"?

  - by kemp

  I need to find a solution for a website which is struggling under load. The site gets ~500 simultaneous connections during peak time, and counts around 42k hits per day. It's a wordpress based site bridged with a vbulletin forum with a lot of contents and a fairly complex structure which makes intensive use of the database. I already implemented code level full page caching (without this the server just crashes), and configured all other caching directives as well as combining css files and the like to limit http requests as much as possible. I need to understand if there is more that can be done via software or if the load is just too much for the server to handle and it needs to be upgraded, because the server goes down occasionally during peak times. Can't access the server now, but it's a dedicated CentOS machine (I think 4GB ram, can't say what CPU) running apache/mysql. So back to the main question: how can I know when the users are just too many?

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• UNIX-Security Advise

  - by Phoibe

  Hello, I want to build a quite secure UNIX-Server. Mechanisms I already implemented: SNORT + fwsnort for banning psad to block network-scanning attempts Portknocking to start+open SSH (key-based login - no password) hourly update of IP-Tables-Rules from a Security-Subscription Fail2Ban ClamAV & Rootkithunter + Logwatch What service-independent security mechanism would you add to this? What mechanism are you using? The server will run Apache&Postfix. For Apache hiding the server-information ofc. and nothing I can think of for Postfix. Thanks

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• Different output by df and du

  - by user1263746

  I have an old RHEL 5.5 Box, When I fire df -kh I see that /var is of 49 GB with 100 % usage. But then I go inside the /var cd /var and I fire du -kh I see that only total 300 MBs are used. I am not able to get it. Is is possible that this partition is shared with different partition? I see that /opt is also of 49 GB. I think that they are same partition. I need to free /var to start mysql but there is hardly anything to be deleted. Any pointers?

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• Splitting CA component off puppet master

  - by Dennis LeMioux

  We are scaling our puppet infrastructure and would like to split off the CA component from the puppet master server to another server. Part of the change involves a servername change for the puppetmaster too. I'm no puppet expert but i'm at a point where I -think- we need to create a SAN cert with both the old and new names in it (to be safe), and then re-sign all the agent nodes all over again which is going to be a royal PITA. Is there a quicker/smarter way to do this? We already have hundreds of agent nodes out there and individually re-signing them will be an arduous task.

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• Random timeouts in IIS7

  - by Cor-Paul

  Hi, I have a weird problem which I think is caused by my IIS7 installation on Vista 64 bit. I have a bunch of AJAX calls and JS dynamic file loads (~30) in a local application, and I get random timeouts (or so it seems) in my browser. In Chrome it looks like the page just stops loading (no HDD activity), in Firefox/Firebug I can see that some of the files are being loaded but they never actually finish. When I reload the page the same occurs, but for (random) other files that must be loaded. When I try to load one of those JS files concurrently (so during the timeout in FF) in another browser, the file loads there. So I am pretty sure the request can be handled by IIS. I am thinking about a limit or so on simultaneous requests from the same browser which is not working correctly, but I am pretty clueless on how to solve this. Does anyone recognize this problem and know a solution? Thanks!

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• Server 2008 blue screen after login - no desktop

  - by Jake

  I came into work today to find that our Windows Server 2008 used as a terminal server for the Thin Clients was not loading the users desktops. What I have found out is that when I login via Remote Desktop, after applying user settings, it gets to the stage of 'Preaparing your desktop', but then the screen just goes blue. I have tried rebooting several times with no luck, and logging in locally at the server with no luck. Does anyone have any suggestions? I do not think that it could be a virus attack as we run antivirus on the server with OpenDNS filtering. Yesterday a software restriction policy was set up to only allow programs in the following directories to run if that could be the problem, although it was working fine all day yesterday. C:\program files C:\programdata C:\windows Thank you. Jake

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