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• Make a socket as a user but make it readable and writable by another

  - by user1598585

  I have a software that is run under user A, this software creates a socket in /sockets and the socket should be readable and writable by user B. I have tried setting the directory to have ownership A:A or A:B but when user A creates the socket, it ends up with uid A and gid A. Using ACLs has not helped so far, the default mask is preventing the rights to be effective. rw permisions for B will always turn into jusr r. If what I make is not a socket it will work fine. How can I best accomplish this task? (It is for a web-server where the web-application makes the socket and the web-server software forwards requests to it)

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• /etc/hosts.deny ignored in Ubuntu 14.04

  - by Matt

  I have Apache2 running on Ubuntu 14.04LTS. To begin securing network access to the machine, I want to start by blocking everything, then make specific allow statements for specific subnets to browse to sites hosted in Apache. The Ubuntu Server is installed with no packages selected during install, the only packages added after install are: apt-get update; apt-get install apache2, php5 (with additional php5-modules), openssh-server, mysql-client Following are my /etc/hosts.deny & /etc/hosts.allow settings: /etc/hosts.deny ALL:ALL /etc/hosts.allow has no allow entries at all. I would expect all network protocols to be denied. The symptom is that I can still web browse to sites hosted on the Apache web server even though there is a deny all statement in /etc/hosts.deny The system was rebooted after the deny entry was added. Why would /etc/hosts.deny with ALL:ALL be ignored and allow http browsing to sites hosted on the apache web server?

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• Is there a real code-free webpage design tool ?

  - by Sefler

  Recently I was doing web design. I found that the current web design tool (like Expression Web, Dreamweaver) is terribly coupled with code. Though I managed to use HTML, CSS and many others, I found those tool not free enough when came to design. What I want is a totaly code-free design tool with which I can use to draw the layout, paste pictures, add texts and so on. It doesn't need to have functionality to covert the design into code because I can do it myself. That is to say, I need the software to create a blueprint for me. I'm currently using Photoshop to do this. However it is too stupid in displying the layout (It can't show the width and many other attributes, I had to draw them by myself). Can you find one for me? Thanks in advance.

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• a load balancing scenario using HAProxy and keepalived shows no performance advantage

  - by chakoshi

  Hi, I am trying to setup a load balanced web server scenario, using two HAproxy load balancers and two debian web servers following this guide http://www.howtoforge.com/setting-up-a-high-availability-load-balancer-with-haproxy-keepalived-on-debian-lenny. the setup is working but the results of simple performance benchmarking is not what I expected. I tried apache benchmark tool to send lots of requests to servers (one time directly testing one of the web servers and the other time testing through the load balancer) using the command "ab -n 1000000 -c 500 http://IP/index.html", but the test results shows better performance for the single server without load balancer. can any one tell me if I'm going wrong on some thing?

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• Can arbitrary email addresses be stored in AD userPrincipalName?

  - by Rob Potter

  I have a web app that is front-ended by ISA, natively authenticating against AD. All users currently log on with sAMAccountName. I would like to allow users to provide a personal email address and be able to authenticate against this instead. From what I understand the AD userPrincipalName is typically used for an internally generated logon name, which by convention, is often their internally generated email address. The web app that I have is web scale (circa 3 million accounts*) and not an internal, corporate app, so the email addresses will be from diverse domains. Can I just set the AD userPrincipalName attribute to the user's email address, and then will ISA natively authenticate against this attribute instead? I heard rumours of AD having a maximum number of domain suffixes that it allows in AD userPrincipalName...? (presumably it catalogues them). [*I realise that AD is not the ideal authentication directory for a user population of this scale.]

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• IIS Hangs on SQL Connections when running ASP.net applications

  - by PaulWaldman

  We have a database server running SQL 2000 and two web servers hosting ASP.net applications. All three servers are running Windows Server 2003 SP2. Our issue is repeatable after about 2 weeks, IIS on one web server is no longer able to establish SQL connections. Static content loads fine. Other non-IIS applications are still able to contact the SQL database server. ODBC functionality also still works. While running SQL profiler a connection is never established from IIS when it is in this state. The only way to fix this situation is to restart the web server. There are no firewalls installed on any machines.

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• Server 2008 unresponsive after SP2 install.

  - by Dan

  I have a dev server that has an exact image of a production web server. The prod server only has SP1 installed on it. When I first fired up the dev box, the first thing I did was install SP2, and let it be. Almost every morning when I came in, the server was unusable. It would respond to ping, but RDP and the web site running on it were down. On the screen the screen saver was bouncing around, so it wasn't hard locked. But it was unresponsive to keyboard and mouse. So now I have to hard shut it down, but when it comes back up, the only thing in the event viewer is the unexpected shutdown, nothing else. I've since taken a fresh image of my prod box and put it on the dev server, and not installed SP2, and the dev box is humming along perfectly. I should also note that this is Server2k8 Web, 64bit Has anyone else seen anything like this?

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• writing data onto a linux live-dvd

  - by stanleyxu2005

  I have a server machine with a dvd-writer. I want to burn a linux live-dvd (openSUSE is preferred) with a pre-configured web server, so that after booting the web server should be ready to serve. The web server has a sqlite database (with very less data). But after rebooting the system, all data in the database will get lost. Is it possible to store all necessary data onto this live-dvd as well? If it were a usb drive. I would create two partition and mount the second partition with read-write permission. But I have no idea how to create two partition onto a dvd Any hint is appreciated

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• How to push to github from a server account with multiple users?

  - by kirdie

  We have a web server which contains a web application stored as a github project. Now all of us can push from our local machines to github and then pull on the server but sometimes we want to make small changes and immediately see the effect so it would be great to be able to push at the server too. Now I created an ssh key for the server but I don't want to add the servers ssh key to my github account because then all github actions done from the server are counted to my account. Is it possible to add the ssh key to the github web application project without creating a new user for the server and what is the best practice for this situation? I also don't want to copy my private key to the server obviously.

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• Computer not POSTing "randomly"?

  - by smoth190

  I have a custom built PC that is exhibiting some...odd... behavior, something I've never seen before. It was working fine one day, and the next day, it wouldn't start. Seeing as I wanted an upgrade anyway, I purchased a new motherboard that was compatible with all my parts. While replacing the motherboard, I accidentally damaged the CPU. Well, I wanted a new one anyway... so I got a new one. Seeing as I was replacing a ton of parts already, I bought a new PSU because the old one was super loud. When I slapped it all together, it starts up, lights, fans, drives, they all start. But I get no display from the monitor. No beeps, which I believe means it doesn't POST. I figured it was the RAM, because after removing the sound card and graphics card, there was nothing else that I hadn't replaced. When I remove both sticks of RAM, I get a continuous beeping, and according to the mobo handbook, means no RAM. So I think the mobo is functional, or atleast partly. I bought new RAM, but it still didn't work. I tried 3 monitors, with both VGA and DIV. So it's probably not the monitor, either. Now, let me get to the random part. Every 20 or so boots (I should also mention, for about 3 out of 5 boots I have to unplug the PC because it won't powerdown via the button), it will POST and I'll get display. Then, after about 2 or 3 resets, it won't work again. This confuses me so much, because even when I change nothing, it will/will not work. My thought is that maybe it has something to do with the RAM not clearing or something. I also reset the CMOS battery, incase that had anything to do with it, but no eval. I found some weird suggestion online about holding the power button for 30 seconds while it was unplugged. That did nothing, but I didn't expect it would... I've replaced just about the entire computer, and all the parts are compatible. Done about everything I can think of, but nothing has worked. Hopefully someone can help me here. And as I side note: When I do get my computer to boot, it says my hardware has changed and I have to re-activate windows. But it says I have to call Microsoft to do it. So I get this fancy automated voice that asks me to enter in a code into windows, then it asks me "How many computers have you activated with this copy of Windows?". Well, I had it on my computer before I replaced everything, so I said 1. Then he yelled at me for violating my 1-use license. I dunno what's going on there, do I have to re-purchase Windows 7? And they wonder why people pirate software... That's just a bonus question, though. Specs: 8GB of DDR2 RAM (Corsair) AMD CPU (I don't know what GHz or model because I can't find the box... (I think its 4 cores of 2.8Ghz) ASRock A785GM-LE Motherboard

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• Why are applications slowing down on the computer's second monitor?

  - by ChristianLinnell

  Here's an interesting one. Problem I have a user on Windows XP who is running a web application inside IE8. She has two monitors plugged in via DVI cables. When she is working the the browser on her primary monitor, everything is fine, but when she drags the window over to the second monitor, the web applications functionality grinds to a halt. It's not just web apps either - many applications exhibit the problem. What I've tried Switching the two monitors in the OS. It's obviously not the monitor's fault. Confirmed that it's the app slowing down, and not the graphical rendering. The application in question actually locks up. The mouse is unaffected, and I can drag other windows on top of the problematic application. Any ideas?

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• Cannot access site via IP / hostname

  - by DaveB

  I am renting a VPS with Debian installed running JBoss AS6 for my web app. I recently had some problems with my DNS hosts as they messed up the A-records for my domain which caused some new A-records to be added by mistake The DNS problem is now sorted and the domain is working ok, however I noticed that the web server no longer responds via direct IP or hostname in a web browser (although it pings ok and I can SSH in using the hostname ok) Is there any explanation for this? I am using rinetd to forward traffic from 80 to port 8080 but thats been ok for a while Any suggestions would be appreciated Regards

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• Nginx vs Apache as reverse proxy, which one to choose

  - by mhd

  Hi, this kind of question maybe has been asked here but I couldn't find any that really match my question. Heard that nginx performance is quite impressive, but Apache has more docs, community(read:expert) to get help Now what I want to know, how both web servers compare in term of performance, easiness of config, level of customization,etc. AS REVERSE PROXY server in a vps environment?? I'm still weighing between the two for a ruby web app(not ROR) served with thin server. Specific answer will be much appreciated. General answer not touching the ruby part is okay. I'm still noob in web server administration.

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• SQL Server 2008 Log-shipping: Without a UNC drive: how?

  - by samsmith

  My real question here is... is there a tool I can use? (E.g. I have a lot to do, and would prefer not to script it all up myself!) Anyone using the redgate (hmmm, they had a tool for this, but I do not see it on their web site now...) I have a primary web app at rackspace. Am setting up a backup copy of the app in another data center. I want to use SQL log replication to sync the db. Using SQL Server Web Edition. TIA for suggestions and insight!

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• How to write a ProxyPass rule to go from HTTPS to HTTP in IIRF

  - by Keith Nicholas

  I have a server which is running a web app that self serves HTTP. I'm wanting to use IIS6 (on the same server) to provide a HTTPS layer to this web app. From what I can tell doing a reverse proxy will allow me to do this. IIRF seems like the tool to do this job. There are no domain names involved.... its all ip numbers. So I think I want :- https:<ipnumber>:5001 to send all its requests to the same server but on a different port and use HTTP ( not exposed to the net ) http:<ipnumber>:5000 but not sure how to go about it with IIRF, I'm not entirely sure how to write the rules? I think I need to make a virtual web app on 5001 using HTTPS? then add a rules file.

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• How to connect 2 virtual hosts running on the same machine?

  - by Gabrielle

  I have 2 virtual hosts running on my Windows XP laptop. One is Ubuntu running inside vmware player. The other is MS virtual PC (so I can test with IE6 ). The Ubuntu virtual host is running my web application with apache. I can point my browser on my laptop at the Ubuntu IP and view my web app. I read this post http://stackoverflow.com/questions/197792/how-to-connect-to-host-machine-from-within-virtual-pc-image and was able to get my Virtual PC to ping my physical machine using the loopback adapter. But I'm stuck on getting my Virtual PC to see my web application running in the Ubuntu vmware player host. I appreciate any suggestions.

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• Looking for MRP software

  - by Samuel

  I am looking for MRP software. All the stuff I have found so far looks like it's from the 90's and has that very old person business feel. I want something fresh and new. I would prefer an open source, web based solution. PHP/MySQL would be best but not required. I couldn't find anything that was web based that didn't make me want to cry. Superuser doesn't have a lot of eye candy but it still looks great. I am the web developer at my company so if I don't find anything I will be making it my self (well, try to at least).

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• Memory management (segmentation and paging) in 80286 and 80386: How does it work?

  - by Andrew J. Brehm

  I found lots of Web sites and books explaining how memory management worked on the 8086 and later x86 CPUs in Real Mode. I understand, I think, how two 16 bit values, segment address and offset are combined to get a linear 20 bit physical address (shift segment four bits to the left, add offset; segments are 64K and start every 16 bytes). But I couldn't find any good Web sites or books that explained how memory management works in Protected Mode, specifically the differences between 80286 and 80386. Can anyone point me to a good Web site or book (or explain it right here)? (For extra credit, i.e. an upvote, how does it work in Long Mode?)

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• Select firefox search result

  - by Nicolas C.

  I am working on a daily basis on a web application with very large menus. Also doing lots of other Excel manipulations, copy and pasting, etc., I am quite fond of keyboard shortcuts as much faster than using the mouse to point, double-click and then going back to my keyboard etc. Hence, my question is quite simple, does anyone know if there is any shortcut under Firefox which would let me actually select (and not highlight) in my web page the search result so that I can for instance do the following manipulation sequence? [Ctrl]+[F] type the search string, for instance 'regional_unit' the missing shortcut to actually select in my page the string which is currently highlighted thanks to the search feature of FF [Space] or [Enter] key to activate the web element which in my case would systematically correspond to a link or button, etc. May be there would be an addon replacing the default search feature, I don't know... I tried to look over the internet but with the words I am using for this investigation, I do not get relevant search results under Google :(. Thanks a lot

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• startup cassandra layout

  - by davidkomer

  We've got a relatively low-traffic site (~1K pageviews/day) hosted on a single server, and expect it to grow significantly over the next few years. I'm thinking of moving over to Rackspace CloudServer or EC2 and firing up 3 nodes (all on CentOS): 2 x Web (Apache) - with loadbalancer 1 x MySQL (for the Wordpress powered part) The question is where to put Cassandra right now... Should it sit on each Web node, or the MySQL node? My thought right now is to put it on Web nodes. It's my understanding that Cassandra has the benefits of fault-tolerance (i.e. if we take a node down, the site is still operational). So even with only 2 nodes, we'd have that benefit as opposed to just putting it on the MySQL node. Also, as we scale up and add another node, a cassandra instance can come along with it and the php can always run its queries on localhost. Is this a good idea?

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• How to restrict HTTP Methods

  - by hemalshah

  How can I restrict HTTP methods to those required by the MOSS07 application(s) using IIS6? Update This is what was written in the document IIS6 should be used to restrict HTTP methods to those required by the MOSS07 application(s). I also searched some books and saw something curious in O'Reilly's Sharepoint 2007 by James Pyles and others. There is no real suppported way to use HTTP POST and HTTP GET because of the web.config settings and the static definition of the WSDL. In the web.config <protocols> <remove name="HttpGet"> <remove name="HttpPost"> <remove name="HttpPostLocalHost"> <add name="Documentation"> </protocols> If we do this in the Web.Config file, would it solve the problem?

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• having trouble setting up ganglia on three machines

  - by Pieter Breed

  I am running ubuntu 11.10 I have one machine with gmetad, gmond and ganglia-webinterface. When I browse the web interface this machine picks up the local gmond output. I then added another machine, running only gmond. I didn't really change anything in the config, only the name of the cluster. This machine's output showed up in the web view. The I tried to add a third machine, similarly to the second, but it's not showing up in the web view. I tried looking at syslog and running as a daemon, but I'm not seeing anything suspicious there. Any tips for trouble shooting this?

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• Nginx save file to local disk

  - by Dean Chen

  My case is: In our China company, we have to access one web server in USA headquarter through Internet. But network is too slow, and we download many big image files. All our developers have to wait. So we want to setup a Nginx which acts as reverse proxy, its upstream is our USA web server. Question is can we make Nginx save the image files from USA web server into its local disk? I mean let Nginx act as one cache server.

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• Consume an XML Feed with PowerPoint 2010

  - by Matt Schweers

  Hi there. I'm looking for a way to consume an XML feed from a web-service directly into PowerPoint 2010. I found the LiveWeb plugin (http://skp.mvps.org/liveweb.htm) for PowerPoint that, while pretty cool, really only pulls in actual web content in a way that feels more like an iframe. Ideally, I would like to consume raw XML web service/feed with PowerPoint, parse it, and stylize the results. Is this possible? Even reading from a static XML file would be a good start.

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• can not access dlink 604 set up interface

  - by user36089

  Hello everyone I used dlink-di604 enthernet board as router to share web access. My ISP provides the service base on Ethernet rathern than base on Ethernet pppoe mode. It is manually setup ipv4, subnet mask , DNS, Gateway etc Log in using web user name&password. I use http://192.168.0.2 try to access dlink di604 setup inferface, but failed I call command ipconfig /all Dos shell displayed: Ethernet adapter Local Connection: Physical Address: 00-3c-56-79-19-49 IPv4 address:10.7.8.225 subnet mask: 255.255.255.0 default gate way: 10.7.8.1 DNS servers 10.10.10.10 What is the correct way to access dlink 604 setup interface and set to share web access? Welcome any comment Thanks interdev

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