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• How can i access windows XP remote desktop on private IP from internet?

  - by Jennie

  So the machine is behind a DSL router on a private IP so that it can not receive inbound requests. I want to know: Is there anyway to setup the router NAT (i highly doubt it supports one to one port mapping) without disturbing other users on the same router. I have another machine on internet which has public IP on it without any firewall. Can i use this machine as a relay server so that to initiate the connection, the XP machine send an outbound request and this relay server makes my connection through and then i can access my machine on pvt ip without any problem. Please tell??

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• scp to remote servers stalls, unable to isolate cause

  - by Rolf

  When I copy a large file (100+mb) to a remote server using scp it slows down from 2.7 mb/s to 100 kb/s and downward and then stalls. The problem is that I can't seem to isolate the problem. I've tried 2 different remote servers, using 2 local machines (1 osx, 1 windows/cygwin), using 2 different networks/isps and 2 different scp clients. All combinations give the problem except when I copy between the two remote servers (scp). Using wireshark I could not detect any traffic volume that would congest the network (although about 7 packets/sec with NBNS requests from the osx machine). What in the world could be going on? Given the combinations I've used there doesn't seem to be any overlap in the thing that could be causing the trouble.

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• Make BIND use DHCP DNS as backup

  - by cainmi

  I run BIND locally on my OS X machine, to enable wildcard Apache vhosts, which requires setting the DNS server for all network interfaces to 127.0.0.1. This works great, but means when I am on a network which uses an internal DNS server to route special (i.e. .companyname) URLs to a server on the network, the lookup fails. I tried adding both 127.0.0.1 and the DHCP provided DNS server, but this doesn't work either. Is there a way to make BIND use the DHCP DNS server for requests it cannot resolve locally?

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• Avoid Apache's mod_status being exposed by Varnish

  - by Peteris Caune

  An Ubuntu 9.04 box running Apache on 8080 and Varnish on 80. Recently set up Munin and was wondering why Apache graphs are empty. Saw from the logs that Munin is accessing /server-status?auto and getting 403 Forbidden back. So I edited /etc/apache2/monds-enabled/status.conf to allow access from 127.0.0.1. But doing this actually made /server-status public, since requests coming through Varnish appear to come from 127.0.0.1 too. So the question is, how do I configure mod_status to be accessible only by munin-node and not by Varnish?

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• How to have Jetty redirect http to https

  - by Noel Kennedy

  I want to redirect all requests for http to https using Jetty (6.1.24). For some reason (my ignorance) this is eluding me. This is what I have: <New id="redirect" class="org.mortbay.jetty.handler.rewrite.RedirectPatternRule"> <Set name="pattern">http://foobar.com/*</Set> <Set name="location">https://foobar.com</Set> </New> In response I get 200 - ok, and the body is the page over http, ie the redirect doesn't occur.

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• 'Slow down' A DHCP server on purpose.

  - by Ced

  As the title implies, May look like a silly question, But what i'm trying to do, Is to have 2 DHCP servers in one network. One only leases IPs to Bootp clients (And if the client re-requests immediately after leases again) And one DHCP server, which is builtin with my PFsense router, that leases the non-bootp clients so they can access the internet and other network resources. I know by chance that PFsense uses ISC-DHCPd. Maybe they have a delay option? All i need to do to make sure the bootp/PXE boot clients get the proper address, is slow down the DHCP server in the PFsense box. Question is how. Anyone ideas? Thanks in advance

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• How to troubleshoot slow powerconnect 62xx management interface

  - by Hannes

  Our Dell Powerconnect 62xx switches have a very high packetloss on the management interface. I presume this is caused by a new appliance which uses multicast for communication but I am not sure. Our network setup is following: servers a - Dell PC6248 | servers b - Dell PC6248 |- juniper core router servers c - Dell PC6248 | What we see is that the multicast traffic arrives at all servers (but only the servers b use the multicast) and I fear that this multicast traffic floods the switch management interface. The switches' management interfaces are reachable via vlan101, all other traffic is sent over other vlans. When I tcpdump on one of the 2 servers with a vlan 101 ip address, I only get a few arp requests but almost nothing. When I try to ping between these 2 servers, it works like a charm. I would like to know what a good way is to troubleshoot this problem and maybe help me understand what is going wrong on that subnet.

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• nginx conditional Accept header

  - by manu_v

  Some mobile devices send the following incorrect requests to our servers : GET / HTTP/1.0 Accept: User-Agent : xxx The empty Accept header causes our Ruby on Rails server to throw back a 500 error. In Apache, the following directive allows us to rewrite the header before sending it to the application RoR server in order to cope with the broken devices : RequestHeader edit Accept ^$ "*/*" early We're currently setting up nginx, but achieving the same work-around is proving difficult. We are able to set : proxy_set_header Accept */*; However, this seems to have to be done inconditionally. Whenever trying to do : if ($http_accept !~ ".") { proxy_set_header Accept */*; } It complains with the message : "proxy_set_header" directive is not allowed here So, using nginx, how can we set the HTTP Accept header to */* when it is empty before sending the request to the application server ?

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• Apache conf for high trafic CMS with backend users?

  - by Annan

  I'm in the situation where a website is going to have a high number of web users and a few backend webmasters. Webmasters will upload images (+other high mem tasks) and this bumps up the memory allocation of the httpd child processes to 100-150mb. In order to stop swapping I'm currently setting MaxClients in httpd.conf to 20. However this lowers maximum simultaneous requests. Will this be a problem when the website goes live? What is the best configuration? Info: Drupal 6, PHP 5, Apache 2.2 (Prefork atm) I'm thinking about Worker MPM, two apache instances or low MaxRequestsPerChild.

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• How can I add config options for a specific hostname outside <VirtualHost>?

  - by Boldewyn

  I'm using Apache 2.2 and let it serve domains foo.example.com and bar.example.com with <VirtualHost> statements: <VirtualHost 127.0.0.1:80> ServerName foo.example.com </VirtualHost> <VirtualHost 127.0.0.1:80> ServerName bar.example.com </VirtualHost> My problem is, that I need to add configuration options, that are only targeted at foo.example.com, in a separate file (let's say, /etc/apache/sites-enabled/foo.conf). This file will be included, before the VirtualHost statement is issued, but it can't be embedded inside it. Can I (and if yes, how) target configuration settings to foo.example.com requests only, outside the VirtualHost container?

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• Evaluate a vendor laptop before deployment to user?

  - by NetWarrior

  I get numerous requests from executives and users for new smaller laptops for travel purposes. Most of my evaluation is based upon whether or not it can run certain applications. Mainly lotus notes, office, and video. Most of the laptops include windows 7 OS, and are fully loaded with ram, a high-end processor and a integrated graphics card. My boss whats me to document the usefulness of the laptop and performance. I'm just a little confused on how to setup a document that can be used by members of the IT department for future evaluations.

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• Problem connecting to Ubuntu Server in same local network.

  - by frbry

  I have my LAN set up as below: 192.168.2.1: ADSL Router (DHCP Range: 192.168.2.2-192.168.2.250) 192.168.2.254: Wireless Access Point 192.168.2.253: Ubuntu Server (Static IP) 192.168.2.2: My Laptop (Connects to Internet via the Wireless AP) NAT in router is active and set up to transfer requests made over port 80 to 192.168.2.253. Router's firewall is inactive. No IPs in DMZ. My friends get Apache's It Works page when they try to enter http://my_external_ip. But I get Router's configuration page instead of that. What should I check or do? Thanks.

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• Have OS X send wake on lan before printing to shared printer

  - by Dean Hill

  I have a MacBook that prints to a shared Windows 7 printer. Sometimes the Windows machine is asleep, and the Mac will just queue up its print requests. I recently created a script to send a wake-on-lan packet to a Windows 7 machine. This wakes up the Windows machine and printing starts. Great, but I think the system can be automated en Is it possible to have the MacBook run the wake-on-lan script everytime something is printed? Stated more generally, can I have the OS X print subsystem execute a script everytime something is printed?

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• Lightweight tool for viewing raw HTTP messages?

  - by rewbs

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

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• Dhcp clients fail after successful import of server to new machine

  - by Tathagata

  I transfered the configs of a dhcp server from one server to another both running Windows Server 2003 R2 following http [://] support.microsoft.com/kb/325473. The new server has a statically configured ip(outside the scope) like the old one. Stopped the server on the old, and started up in the new server (authorized too) - but when I ipconfig /renew from a client its network interface fails with all 0.0.0.0 (or 169...*). I read somewhere I need to reconcile the scope to sync the new registry values ('ll try this tomorrow). What other troubleshooting steps can I take other than these (which didn't help)? Things work fine when the old server resurrects and the new one is taken down. The new server showed there was no requests for offer.

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• embedded tomcat 7 behind iis 7.5 proxy ssl problems

  - by user1058410

  I'm using embedded tomcat 7 behind a iis 7.5 proxy server, with requests being forwarded to tomcat with arr. Everything works fine unless iis is set to require ssl. Then things like links that are generated dynamically in .jsp files on tomcat don't work right. For example if a link is supposed to point to _https://somewhere.com:443 it will be wrote as _http://somewhere.com:8080 (8080 is the port tomcat is running on). The problem seems to come from when tomcat looks at itself to build out the url it sees correctly that it is running on _http://somewhere.com:8080, but i need it to think otherwise. Does anybody know how to accomplish this without using ssl between iis and tomcat? Sorry for the underscores in front of the imaginary urls.

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• Apache on Windows random long wait times

  - by Jaxbot

  I have a development machine with Apache installed as a service on Windows. The installation is fresh out of the box, with no changes to configuration aside from adding the PHP module. From day one, I've had a problem that looks like this: Essentially, Apache is freezing for about 11 seconds before replying on random requests. This appears to happen more frequently when the host hasn't been connected to in a while, but this is not always the case. I've eliminated MySQL, PHP, and the specific application; this long wait problem will occur even when loading a static file such as favicon.ico. Thus, the only factor remaining is Apache, which is freezing for consistently around 10-11 seconds before replying. The problem is not the DNS problem that many people point to; as you can see, the DNS lookup is instant, and the problem occurs both on localhost and 127.0.0.1. Thanks for the time.

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• Only allow the POST method for a specific file in a directory

  - by Dave Chen

  I have one file that should only be accessible via the POST method. /var/www/folder/index.php The document root is /var/www/ and index.php is nested inside a folder. My configurations are as follows: <Directory "/var/www/folder"> <Files "index.php"> order deny,allow Allow from all <LimitExcept POST> Deny from all </LimitExcept> </Files> </Directory> I visit my server at 127.0.0.1/folder but I can GET and POST the file just like normal. I've also tried reversing the order, order allow,deny, require, limitexcept and limit. How can I only allow POST requests to be processed by one file in a folder?

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• Nginx (for static files) and Apache (for dynamic content)?

  - by matthewsteiner

  So, my entire application runs on apache just fine. However, I want to test how much the requests per second increases if I put all static files through nginx instead. I found this thread: http://stackoverflow.com/questions/869001/how-to-serve-all-existing-static-files-directly-with-nginx-but-proxy-to-apache-t But I have a couple problems. I'm completely new to nginx, so I'm not sure where to put the configuration. (The file is at /etc/nginx/nginx.conf, but I don't know if I just add the code to the bottom or what?) Also, how can I have both servers running at the same time? Is it because they both listen on port 80? Right now I have to stop one to start the other, and that's as far as I've gotten. Thanks for any help.

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• Tomcat / Railo stop responding with no error output

  - by andrewdixon

  This is going to sound very vague and I'm sure it will be voted down for not giving enough information however I don't really have any to give as you will see. We have an AWS instance running Amazon Linux, Apache, Tomcat and Railo and from time to time the Tomcat/Railo simply stops responding to requests and there are no errors output in the catalina.out file or any of the other log files in the Tomcat logs directory. When I issue the command to restart Tomcat/Railo the restart scripts sits there for a while then says that Tomcat has not responded so it has killed it off and then it starts up again and everything is fine until it happens again, anything from a couple of minutes to a couple of days later. I have done my best to check other logs on the server but have found no messages at all to indicate why Tomcat/Railo has given up and stopped responding. Can anyone suggest any reason why it might be doing this and / or any other log file(s) that we could check to see what is happening. Thanks. Andrew.

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• Is Sql Azure useful without windows azure?

  - by KallDrexx

  I am currently doing some research to get some preliminary IT cost projections for a project, and I was looking at Azure. Since this is a startup, I do not want to deal with the IT operations myself and instead am looking at having it all professionally hosted. I am looking at azure due to the SLA assurances, already in place disaster recovery operations, and the reliability. I'm playing with some numbers, and I am wondering if hosting my database on Sql Azure is an option, while hosting the actual webpage on another host until I need the frontend scalability of Azure. Is this actually feasible or will the latency in requests between the web host and azure be too much and I would be better off hosting both on the same service?

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• Wordpress login fail after .htaccess domain redirect

  - by Gayan

  I use .htaccess to redirect requests to my (new) domain to another domain hosted on different server. The file contains: Options +FollowSymlinks RewriteEngine on RewriteBase / RewriteCond %{HTTP_HOST} ^(www\.)?amazon40\.com [NC] RewriteRule ^(.*)$ http://steamsigs.com/amazon40/$1 [R=301,L] The redirection works fine. The home page is redirected to steamsigs.com/amazon40 and wordpress login page shows up correctly (steamsigs.com/amazon40/wp-login.php). But the acutual login process doesn't work. It does not show the control panel and keeps on redirecting to the login page. Could be that something's interfering with the GET/POST vars but I'm not sure about this. I'd appreciate any your help to resolve this.

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• Web site kills hard disk I/O, how to prevent?

  - by Taras Voynarovsky

  The situation: I have a server, on which we have 2-3 projects. Starting not long ago, the server started hanging up (We could not connect to it by ssh, and the connected clients had to wait 20 minutes for top to give results) Early today I managed to execute gstat while it was in this state and saw, that it stays on 100% on da0, da0s1 and da0s1f. I dont quite know what those ids meen, but I understand that some processes just kill the HD by bombing it down with requests. I ask of some propositions. I dont know how to find the culpit and can't prevent this. I have freebsd on server.

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• Create room mailbox in Exchange 2007 - cannot view calendar

  - by David Neale

  I'm an application developer and I'm trying to play around with Exchange in order to integrate a room booking system with it. I've created a room mailbox and have set it so that it auto-accepts appointment requests. When creating an appointment as a standard user I can add the room as a resource and its availability will display. However, I can add it as a shared calendar to Outlook 2003 (Unable to display the folder. The Calendar folder could not be found) nor can I return the calendar folder using Exchange Web Services (again, could not find the folder). I've also created an appointment via Exchange Web Services with a room as a resource. The resource was successfully booked (as confirmed when opening it as the room's delegate) but it does not appear on the meeting as viewed by any of the attendees. Is there anything further I need to do in order to share this calendar? How do most organisations set up their Exchange with regards to rooms?

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• nginx connection reset

  - by Steve

  When first visiting my site after not visiting it for a few minutes, the connection is "reset" 100% of the time. I get this message when debug is turned on, along with a 400 bad request status message: client prematurely closed connection while reading client request line I've read that this could be caused by large_client_header_buffers setting. I have google analytics on my site. Using live http headers, I get this as the request: `GET /__utm.gif?utmwv=5.3.7&utms=35&utmn=745612186&utmhn=domain.com&utmcs=UTF-8&utmsr=1920x1080&utmvp=1841x903&utmsc=24-bit&utmul=en-us&utmje=1&utmfl=11.4%20r402&utmdt=2006Scape%20Forums%20-%20General&utmhid=2004697163&utmr=0&utmp=%2Fservices%2Fforums%2Fboard.ws%3F3%2C4&utmac=UA-25674897-2&utmcc=__utma%3D68455186.1647889527.1351640625.1352446442.1352451659.100%3B%2B__utmz%3D68455186.1352097329.64.2.utmcsr%3Ddomain.com%7Cutmccn%3D(referral)%7Cutmcmd%3Dreferral%7Cutmcct%3D%2Fservices%2Fforums%2Fboard.ws%3B&utmu=q~ HTTP/1.1 my large_client_header_buffers in nginx is set to 4 8k, so I don't know if this is the problem. Immediate requests have the first "reset" request are all successful.

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