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• Proxy service likes Apache Http

  - by Aptos

  Currently I try to simulate my app as distributed servers, so I let them run on localhost:9000 and localhost:9001, i tried using apache load balancer but it is really hard to config on mac, my idea is the second server localhost:9001 will be kept ideal and the requests only be redirected to them when the first server is downed. Is there any good free program can do that ? (except Apache httpd). Extra functions: my application is written in java and maintain an in-memory object, is there any service that can synchronize that object between 2 servers so they can keep uptodate status of other (the second one takes state of the first one)? Is there any app can support that? Thank you very much.

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• Beast / CRIME / Beach attack and stopping it

  - by user2143356

  I have read so much on all this but not entirely sure I understand what has gone on. Also, is this one, two or three problems? It looks to me like three, but it's all very confusing: Beast CRIME Beach It seems the solution may be to simply not use compression with HTTPS traffic (or is that just on one of them?) I use GZIP compression. Is that okay, or is that part of the problem? I also use Ubuntu 12.04 LTS Also, is non-HTTPS traffic okay? So after reading all the theory I just want the solution. I think this may be the solution, but can someone please confirm I have understood everything so I am not likely to suffer from this attack: SOLUTION: Use GZIP compression on HTTP traffic, but don't use any compression on HTTPS traffic

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• Configure New Server for .htaccess

  - by Phil T

  I have a new LAMP CENTOS 5 server I am setting up and trying to copy the configuration from another web server I have. I am stuck with what I think is a mod_rewrite problem. If I go to http://old-server.com/any_page_name.php it correctly routes through some handling code in index.php and shows me a graceful "Page Cannot Be Displayed" message. But if I go to http://new-server.com/any_page_name.php I get an ugly Apache 404 Not Found error message. I looked in both httpd.conf files and they both have only one reference to mod_rewrite. LoadModule rewrite_module modules/mod_rewrite.so So it seems like that should be fine. At the bottom of httpd.conf I have the code: <VirtualHost *:80> ServerAdmin [email protected] DocumentRoot /var/www/html ServerName new-server.com ErrorLog logs/new-server.com-error_log CustomLog logs/new-server.com-access_log common </VirtualHost> Then in the root of /var/www/html I have the exact same .htaccess file that looks like this: RewriteEngine on Options +FollowSymlinks RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_FILENAME} !-d RewriteRule . index.php [L] ErrorDocument 404 /page-unavailable/ <files ~ "\.tpl$"> order deny,allow allow from none deny from all </files> So I don't see why the page load at old-server.com works fine while new-server.com doesn't route through index.php like I want it to do. Thanks.

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• Apache not finding index.php by default, set rule for routing through index.php

  - by eoinoc

  Apache on the server is set to find index.php by default, and that works for a normal folder. However, I have a .htaccess rule to route all requests through my routing script: RewriteEngine On RewriteCond %{REQUEST_FILENAME} !-f RewriteRule ^(.*)$ index.php [QSA,L] With these .htaccess contents, the server returns a 404 error. Only by specifying /index.php does the routing script get called. Any tips on what I am doing wrong?

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• solr Security help

  - by Camran

  I have solr setup with Jetty on my Ubuntu server. On any computer now, I can type my_ip:8983/solr/ and the page will show upp to anybody. How can I disable this so that only I can access that port and the solr admin? Thanks

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• PHP unable to allocate memory.

  - by AlReece45

  On my way to the office this morning, every website on our shared VPS started giving the same error (several times, not the typical memory_limit error which is fatal): Warning: Unknown: Unable to allocate memory for pool. in Unknown on line 0 The shared server is a 64-bit OpenVZ container running cPanel. There are only ~6 VPSes on the host-- this is the largest one at only 4GB. The host itself has 24GB RAM. As the below graphs show, the memory usage on the host and VPS are both rather low. CPU Usage/Disk/Host all seem to be normal. RlimitMem was set to 583653034, yet the memory usage is about the same as it usually is. Apache 2.2, PHP 5.2 (mod_php) Restarting Apache has corrected the problem for now. However, I'd like to prevent it from happening again and I'm not sure what was limiting the memory. RlimitMem was set to 583653034, yet the memory usage is about the same as it usually is. There's seems to be plenty of memory: what caused this error? VPS Memory Usage Host Memory Usage APC Information apc.ttl=0 apc.shm_size=0 apc.mmap_file_mask=(blank) 1 Segment(s) with 32.0 MBytes (mmap memory, pthread mutex locking)

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• Apache rewrite rules behind a nginx proxy

  - by Tuinslak

  Hi, I am running nginx (:80) in front of an Apache webserver (:8080) Nginx config (snippet): location / { proxy_pass http://www.domain.tld:8080; proxy_set_header X-Real-IP $remote_addr; If I set localhost instead of www.domain.tld, my browser gets redirect to http://localhost:8080. Apache rewrite rules: RewriteEngine On Options +FollowSymlinks RewriteBase / RewriteCond %{HTTP_HOST} !^www\. RewriteRule ^ http://www.%{HTTP_HOST}%{REQUEST_URI} [L,R=301] RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_URI} !\..+$ RewriteCond %{REQUEST_URI} !/$ RewriteRule (.*) http://%{HTTP_HOST}/$1/ [L,R=301] RewriteCond %{REQUEST_URI} !v2/ RewriteRule ^(.*)$ v1/$1 [L] So far, so good. However, every link (which uses relative paths) appears as http://www.domain.tld:8080/page instead of staying on port 80. Is there any way to solve this through the rewrite rules? I don't want to use absolute paths. Thanks

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• How to set original error message for apache 2.2

  - by ffffff

  Apache 2.2 default 414 message is Request-URI Too Large The requested URL's length exceeds the capacity limit for this server. I wanna set custom message so I set http.conf ErrorDocument 414 /error/HTTP_REQUEST_URI_TOO_LARGE.html.var But I do not get along well How to set original error message for apache 2.2

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• How do I configure ubuntu server's iptables to allow java without opening the floodgates?

  - by rofls

  I'm new to servers, so please bear with me. I have my amateur site running. Problem is, I followed Rackspace's instructions on setting up iptables and am pretty sure that's why the java server I'm trying to use on port 8080 isn't working (it runs the script but my android test app doesn't connect to it). When I try running the same java server script on port 80 it doesn't even start. I also ran nmap on my domain and saw that indeed only port 80 and 22 (for ssh) are responding. Is it possible to run Java and apache happily on the same server? If so, how can I configure my iptables correctly. (I'm aware that I should probably do some sort of filtering in the java server itself, but will figure that out later).

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• Apache SMTP connection times out

  - by Kaivosukeltaja

  A web server that has successfully sent mail using the hosting providers's SMTP server before seems to suddenly have lost connection to the SMTP server. [Wed Nov 28 09:51:27 2012] [error] [client 10.250.11.81] PHP Warning: fsockopen(): unable to connect to smtp.ourprovider.net:25 (Connection timed out) in /var/www/(....)/phpmailer/class.smtp.php on line 105, referer: http://oursite.net/sendmessage.php# If I telnet to the SMTP server's port 25 manually from the web server, I'm able to connect and send mail with no problems whatsoever. The web server is running RHEL 6.3 and Apache 2.2.15. The SE boolean httpd_can_network_connect is on. Our PHP version is 5.3.3. Where should I start looking to fix this?

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• Full Apache config migration

  - by Victor Rashkov

  I searched alot and didn't find an applicable answer. I have a working LAMP setup on Ubuntu machine and I have to migrate to a new server in a different country. The old server is 11.10, the new server is 12.04LTS. My problem is that I simply can not remember the steps I followed when I configured the current server which is not the basic LAMP install. It is Apache with FastCGI, SuEXEC, a GD library, worker MPM and all sitting on top of a mhddfs system. There are also other configs I've changed and I can not recall what they are. Because of the complexity of the setup, my attempts to migrate to the new server fail. I get permissions errors, cgi problems etc. Therefore my question is : Is there a sane way to simply tar a full backup of the current web server installation, including MySQL, Php amd the apache server with all configs, and then move it to the new machine? I shall be forever thankful on any advise. So far non of thise I found here gave me an answer. Thanks!

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• Reducing memory for worker MPM in Apache

  - by ShyM

  I've moved from the prefork MPM to the worker MPM due to a process limit I was hitting on my VPS. However, memory usage increased after switching over (which is odd since the worker MPM is supposed to have a smaller memory footprint?). Most of them belong to php-cgi processes. Is there something I'm doing wrong? I have around 20 sites on it, each with a different fcgi wrapper script. Could that be a reason?

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• Single domain name potentially resolving to multiple servers

  - by Jace

  first time here at Server Fault, and I apologize in advance that this domain stuff is not really my strength. Any and all suggestions are much appreciated. I am completely lost and incredibly tired! I've inherited an incredibly convoluted system from my predecessor, and I'm trying to find a way to solve it - or I need to be told that it just isn't possible. I've got an old site on ServerA (some kind of Linux distribution), with the domain SomeDomain.com There is a new site sitting on ServerB (Ubuntu), with the intention of having SomeDomain.com to serve it in the future (it is replacing the old site) ServerA also has a web app that is currently in use by other departments within the company (accessible at SomeDomain.com/web-app/) The goal: To have SomeDomain.com and all extensions of this domain name (sub-domains, URL's etc.) serve the new site on ServerB. BUT, the URL SomeDomain.com/web-app/ must serve the Web App on ServerA. The Catch: The ServerA is a shared server with a hosting company with VERY limiting restrictions in place - I cannot adjust DNS settings (apart from Name servers - but cannot set A records or anything, I have full access to ServerB to do as I wish). Therefore the web-app MUST be served from SomeDomain.com/web-app/ and not from a sub-domain or anything. These limitations make migrating the web-app from Server A to Server B rather undesirable, AND this web-app will be replaced in the near future, so it isn't worth the effort right now. Therefore, ultimately I will want 1 domain name to resolve to Server B's IP address most of the time, but in the event that the URL is SomeDomain.com/web-app/, it should resolve to Server A's IP. Note: The domain names don't, technically, have to resolve to one IP or another - but ultimately the URL's must stay consistent Some things I have tried: I've looked into mod_rewrite and .htaccess to try and achieve this effect, but it doesn't look like it's going to work for me - but I may have done it wrong (On Server B, I just checked if the request URI was /web-app/ and tried to serve the /web-app/ folder on Server A) I do have the ability to modify the name servers on both servers I am not able to make a sub domain on Server A that points back to Server A (I assume because the hosting company's servers use the URL to determine what site the serve). I figured this could be good as I'd could set an A record on Server B to point to the web app on Server A - but alas, Server A requires SomeDomain.com. If there is any more information I can give, please let me know. I need a nudge in the right direction, ideas or a solution.

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• Securing phpmyadmin: non-standard port + https

  - by elect

  Trying to secure phpmyadmin, we already did the following: Cookie Auth login firewall off tcp port 3306. running on non-standard port Now we would like to implement https... but how could it work with phpmyadmin running already on a non-stardard port? This is the apache config: # PHP MY ADMIN <VirtualHost *:$CUSTOMPORT> Alias /phpmyadmin /usr/share/phpmyadmin <Directory /usr/share/phpmyadmin> Options FollowSymLinks DirectoryIndex index.php <IfModule mod_php5.c> AddType application/x-httpd-php .php php_flag magic_quotes_gpc Off php_flag track_vars On php_flag register_globals Off php_value include_path . </IfModule> </Directory> # Disallow web access to directories that don't need it <Directory /usr/share/phpmyadmin/libraries> Order Deny,Allow Deny from All </Directory> <Directory /usr/share/phpmyadmin/setup/lib> Order Deny,Allow Deny from All </Directory> # Possible values include: debug, info, notice, warn, error, crit, # alert, emerg. LogLevel warn CustomLog ${APACHE_LOG_DIR}/phpmyadmin.log combined </VirtualHost>

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• Is there a way of disabled byte-range requests in Apache?

  - by Sam Minnée

  I have a web page with a link to a PDF file (target="_blank"). If I click the link, the PDF reader just shows a grey screen within the Firefox browser. If I copy that link and manually open it in a new tab, the PDF will display correctly, and subsequent requests made by clicking the original link now work, suggesting that the problem occurs when loading the file into the cache. It appears as though the Adobe PDF reader plugin is making byte-range requests (I see lots of 206 responses) and I suspect that this may be the cause of the issue. I am running an Apache webserver. Has anyone had problems with Apache and Adobe's byte-range requests? Are there any workarounds? Perhaps a way of configuring Apache to ignore byte-range requests on PDFs?

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• Are there any tools for monitoring individual Apache virtual hosts in real-time?

  - by Dave Forgac

  I'm looking for a way to monitor and record Apache traffic, separated by virtual host. I am currently using Munin to capture this and other data for the entire server however I can't seem to find a way to do this by vhost. This link describes using a module called mod_watch which is apparently no longer in development: http://www.freshnet.org/wordpress/2007/03/08/monitoring-apaches-virtualhost-with-munin/ The file that is listed as being compatible with Apache 2.x is reported to have problems with missing vhosts an reporting data correctly. Does anyone know of a reliable way to determine real-time traffic per vhost? If I can find this it should be easy enough to write a new Munin plugin.

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• can't use periods in ServerName/ServerAlias [Lion Apache installation]

  - by punchfacechamp

  I can access my host like this… http://keggyshop but can't use periods… http://keggyshop.edu here's my virtual host directive… <VirtualHost *:80> ServerName keggyshop ServerAlias keggyshop.edu DocumentRoot "~/sites/2012/keggy/web/pages/keggy/120528/sandbox/public" <Directory "~/sites/2012/keggy/web/pages/keggy/120528/sandbox/public"> Options Includes FollowSymLinks AllowOverride All Order allow,deny Allow from all </Directory> </VirtualHost>

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• Why domain.com appears as theplant.com when hosted on hostgator?

  - by silow

  I have a script that's supposed to detect the url of its caller website. If the caller is another website, it should give something like http://callersite.com. I'm using this line of php code (though I suspect this won't matter for sysadmins) gethostbyaddr($_SERVER['REMOTE_ADDR']) I'm testing with a caller site that's hosted on hostgator. What I'm noticing though is that I don't get callersite.com, I get something like 1a.12.12ab.static.theplanet.com. I don't know what theplanet.com is and why I'm not getting caller site.com. Also what do I need to do to really get the domain of the site making a call to my script? -- Thanks for the explanation. Some have advised I use $_SERVER['HTTP_REFERER'] but it's not what I'm after. My script acts as an API. Another website makes a curl request to it and gets an output and later on presents it to the user. So http referrer gives false since the caller site.com is making a direct call to me. So any hope?

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• Serving index.html from a subdirectory

  - by xbonez

  In my document root, I have to directories: home and foobar, both with their own index.html files. How can I set it up so that when someone visits my site at example.com, they see the contents on home/index.html? I tried using an index.php with a redirect in document root, as well as a .htaccess redirect, but both of them change the URL in the browser to example.com/home/, which I would like to ideally avoid.

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• Returning "200 OK" in Apache on HTTP OPTIONS requests

  - by i..

  I'm attempting to implement cross-domain HTTP access control without touching any code. I've got my Apache(2) server returning the correct Access Control headers with this block: Header set Access-Control-Allow-Origin "*" Header set Access-Control-Allow-Methods "POST, GET, OPTIONS" I now need to prevent Apache from executing my code when the browser sends a HTTP OPTIONS request (it's stored in the REQUEST_METHOD environment variable), returning 200 OK. How can I configure Apache to respond "200 OK" when the request method is OPTIONS? I've tried this mod_rewrite block, but the Access Control headers are lost. RewriteEngine On RewriteCond %{REQUEST_METHOD} OPTIONS RewriteRule ^(.*)$ $1 [R=200,L]

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• Apache and fastcgi - How to secure an Apache server with fastcgi enabled?

  - by skyeagle

  I am running a headless server on Ubuntu 10.x. I am running Apache 2.2. I am writing a fastcgi application for deployment on the server. I remember reading a while back (I could be wrong) that running CGI (and by implication fastcgi) on a server, can provide 'backdoors' for potential attackers - or at the very least, could compromise the server if certain security measurements are not taken. My questions are: what are the security 'gotcha's that I have to be aware of if I am enabling mod_fastcgi on my Apache server? I want to run the fastcgi as a specific user (with restricted access) how do I do this?

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• Logging the client IP with Nginx/Varnish/Apache

  - by jetboy

  I have Nginx listening on port 443 as an SSL terminator, and proxying unencrypted traffic to Varnish on the same server. Varnish 3 is handling this traffic, and traffic coming in directly on port 80. All traffic is passed, unencrypted, to Apache instances on other servers in the cluster. The Apache instances use mod_rpaf to replace the logged client IP with the contents of the X-Forwarded-For header. My problem is that if the traffic is coming via Nginx, while the 'correct' client IP is getting logged in the VarnishNCSA logs, it looks as if Varnish is (understandably) replacing Nginx's X-Forwarded-For header with 127.0.0.1 downstream, and this is getting logged with Apache. Is there a nice simple way to stop Varnish rewriting X-Forwarded-For if it's already populated?

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• Force HTTPS with AWS Elastic load balancer

  - by panos2point0

  I need to redirect all incoming HTTP traffic to HTTPS on my elastic load balancer. I tired using Apache mod_rewrite: RewriteEngine On RewriteCond %{HTTP:X-Forwarded-Proto} !https RewriteRule !/status https://%{SERVER_NAME}%{REQUEST_URI} [L,R] Taking advantage of the X-Forwarded-Proto header added by the load balancer, this rule should instruct the users browser to request the HTTPS version of the same URL. So far It doesn't work (no redirection happens). What am I doing wrong? Is there a better way to do this?

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• On apache how do I allow access to only to a single file?

  - by sriram

  I have a apache machine which is serving a .js file. That file should be the only file that need to seen. I have configured to do so in my apache like this : <Location /var/www/test/test.js> Order allow,deny Allow from all </Location> The site address is test.in which points to test.js file in /var/www/test directory. That is working fine. But I wish when the user tries to hit test.in/someurl (which is not available) or some other url than test.in need to give an message with 401 error. How do I do that?

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• How to make XAMPP virtual hosts accessible to VM's and other computers on LAN?

  - by martin's

  XAMPP running on Vista 64 Ultimate dev machine (don't think it matters). Machine / Browser configuration Safari, Firefox, Chrome and IE9 on dev machine IE7 and IE8 on separate XP Pro VM's (VMWare on dev machine) IE10 and Chrome on Windows 8 VM (VMware on dev machine) Safari, Firefox and Chrome running on a iMac (same network as dev) Safari, Firefox and Chrome running on a couple of Mac Pro's (same network as dev) IE7, IE8, IE9 running on other PC's on the same network as dev machine Development Configuration Multiple virtual hosts for different projects .local fake TLD for development No firewall restrictions on dev machine for Apache Some sites have .htaccess mapping www to non-www Port 80 is open in the dev machine's firewall Problem XAMPP local home page (http://192.168.1.98/xampp/) can be accessed from everywhere, real or virtual, by IP All .local sites can be accessed from the browsers on the dev machine. All .local sites can be accessed form the browsers in the XP VM's. Some .local sites cannot be accessed from IE10 or Chrome on the W8 VM Sites that cannot be accessed from W8 VM have a minimal .htaccess file No .local sites can be accessed from ANY machine (PC or Mac) on the LAN hosts on dev machine (relevant excerpt) 127.0.0.1 site1.local 127.0.0.1 site2.local 127.0.0.1 site3.local 127.0.0.1 site4.local 127.0.0.1 site5.local 127.0.0.1 site6.local 127.0.0.1 site7.local 127.0.0.1 site8.local 127.0.0.1 site9.local 192.168.1.98 site1.local 192.168.1.98 site2.local 192.168.1.98 site3.local 192.168.1.98 site4.local 192.168.1.98 site5.local 192.168.1.98 site6.local 192.168.1.98 site7.local 192.168.1.98 site8.local 192.168.1.98 site9.local httpd-vhosts.conf on dev machine (relevant excerpt) NameVirtualHost *:80 <VirtualHost *:80> ServerName localhost ServerAlias localhost *.localhost.* DocumentRoot D:/xampp/htdocs </VirtualHost> # ======================================== site1.local <VirtualHost *:80> ServerName site1.local ServerAlias site1.local *.site1.local DocumentRoot D:/xampp-sites/site1/public_html ErrorLog D:/xampp-sites/site1/logs/access.log CustomLog D:/xampp-sites/site1/logs/error.log combined <Directory D:/xampp-sites/site1> Options Indexes FollowSymLinks AllowOverride All Require all granted </Directory> </VirtualHost> NOTE: The above <VirtualHost *:80> block is repeated for each of the nine virtual hosts in the file, no sense in posting it here. hosts on all VM's and physical machines on the network (relevant excerpt) 127.0.0.1 localhost ::1 localhost 192.168.1.98 site1.local 192.168.1.98 site2.local 192.168.1.98 site3.local 192.168.1.98 site4.local 192.168.1.98 site5.local 192.168.1.98 site6.local 192.168.1.98 site7.local 192.168.1.98 site8.local 192.168.1.98 site9.local None of the VM's have any firewall blocks on http traffic. They can reach any site on the real Internet. The same is true of the real machines on the network. The biggest puzzle perhaps is that the W8 VM actually DOES reach some of the virtual hosts. It does NOT reach site2, site6 and site 9, all of which have this minimal .htaccess file. .htaccess file <IfModule mod_rewrite.c> RewriteEngine On RewriteCond %{HTTP_HOST} !^www\. RewriteRule ^(.*)$ http://www.%{HTTP_HOST}/$1 [R=301,L] </IfModule> Adding this file to any of the virtual hosts that do work on the W8 VM will break the site (only for W8 VM, not the XP VM's) and require a cache flush on the W8 VM before it will see the site again after deleting the file. Regardless of whether a .htaccess file exists or not, no machine on the same LAN can access anything other than the XAMPP home page via IP. Even with hosts files on all machines. I can ping any virtual host from any machine on the network and get a response from the correct IP address. I can't see anything in out Netgear router that might prevent one machine from reaching the other. Besides, once the local hosts file resolves to an ip address that's all that goes out onto the local network. I've gone through an extensive number of posts on both SO and as the result of Google searches. I can't say that I have found anything definitive anywhere.

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