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• Any problems with using a 301 redirect to force https traffic in IIS?

  - by Jess

  Is there any problem with using a 301 redirect to force all traffic to go to a secure-only site? We originally had redirect rules, but enforcing SSL-only seemed more secure. Here is how we set it up: Site 1: https://example.com/ Require SSL set Bound to 443 only Site 2: http://example.com Bound to 80 only Empty folder - no actual html or other data 301 Redirects to https://example.com This seems to work beautifully, but are there any issues with doing this? Would any browsers not recognize the 301 redirect, or could there be security warnings during the redirect?

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• C++: Platform independent game lib?

  - by Martijn Courteaux

  Hi, I want to write a serious 2D game, and it would be nice if I have a version for Linux and one for Windows (and eventually OSX). Java is fantastic because it is platform independent. But Java is too slow to write a serious game. So, I thought to write it in C++. But C++ isn't very cross-platform friendly. I can find game libraries for Windows and libraries for Linux, but I'm searching one that I can use for both, by recompiling the source on a Windows platform and on a Linux platform. Are there engines for this or is this idea irrelevant? Isn't it that easy (recompiling)? Any advice and information about C++ libraries would be very very very appreciated!

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• Iptables remote port forwarding and dynamic remote ip

  - by lbwtz2

  Hello, I want to forward a port from my remote vps to my domestic server and I am quite a newbie with iptables. The problem is that I am using a dynamic dns service to reach my home server from the internet so I don't have a fixed ip and iptables doesn't like urls. The rules I am willing to use are these: -t nat -A PREROUTING -p tcp -i eth0 -d xxx.xxx.xxx.xxx --dport 8888 -j DNAT --to myhome.tld:80 -A FORWARD -p tcp -i eth0 -d myhome.tld --dport 80 -j ACCEPT Of course I recevie a Error BAD IP ADDRESS because of myhome.tld. What can I do?

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• Rejecting new HTTP requests when server reaches a certain throughput

  - by Sam

  I have a requirement to run an HTTP server that rejects new HTTP requests (with a 503, or similar) when the global transfer rate of current HTTP responses exceeds a certain level. For example, if the web server is transferring at 98Mbps, and a new HTTP request arrives, we would want to reject this (as we couldn't guarantee a good speed). I've had a look at mod_cband for Apache, limit_req for nginx, and lighttpd's rate limiting features, but none of them seem to handle my (rather contrived, granted) use case. I should add that I'm open to using pretty much any web server, and am open to implementing this in iptables rules if someone can craft such a rule! (Refusing the TCP connection is fine, it doesn't have to respond with an HTTP 503). Any suggestions?

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• How to run programs from a different directory in unix

  - by user1067358

  I know this is a very simple question, and that many similar (but more complicated!) questions have been asked- So i wanted to ask this in a very plane manner. Sorry if this voids the rules of conduct on this website! I'm very new to using unix. I have a program that converts a ".evt" file to an .rq1, which is used for data analysis. The command to do so is simple, for example: Convert data.evt (this outputs data.rq1). This program, let's say, is located in directory /A and I have a data file that I want to convert in directory /B. How would I go about executing this program without moving the convert program to directory B?

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• Limiting and redirect port access with useragent

  - by linuxcore

  I'm trying to write iptables string match rule To block http://domain.com:8888 and https://domain.com:8888 when it matches the supplied string in the rule. And another rule to redirect the ports also from 8888 to 7777 I tried following rules but unfortunately didn't work iptables -A INPUT -p tcp -s 0.0.0.0/0 -m string --string linuxcore --algo bm --sport 8888 -j DROP iptables -t raw -A PREROUTING -m string --algo bm --string linuxcore -p tcp -i eth0 --dport 8888 -j DROP iptables -t nat -A PREROUTING -p tcp --dport 8888 -m string --algo bm --string "linuxcore" -j REDIRECT --to-port 7777 iptables -A INPUT -t nat -p tcp --dport 8888 -m string --algo bm --string "linuxcore" -j DROP I want to do this from iptables not the webserver because the server may not have a webserver and those ports are working on internal proxy or something like ..etc

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• Remote access to a KVM Ubuntu virtual server

  - by Lee

  I've just setup an ubuntu virtual server and everything seems to be working fine. I used KVM to get it working with a bridged network. I've given the virtual server a static ip address on my network. I don't seem to be able to connect to the virtual machine though from outside my network. If I'm on my own network it all works fine, I can ping the ip and connect to it. The virtual server can ping other machines and sites on the internet. I changed the port forwarding rules on my router to forward any connections on a specific port to the virtual server ip address thinking that was the problem, but it was still the same. Is there something I'm missing here which is blocking outside connections to the virtual machine? Thanks.

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• JS dynamic img change and SEO

  - by Gusepo

  Hi all, I've built a web site using jquery to make nice transitions between content. The code works this way: there are 2 imgs (body and footer) when I click on a link (instead of going to another page) I fade out the 2 imgs and change the src attribute of the 2. When the new imgs are loaded I fade them back in. I'm using SWFaddress to allow user go directly to internal content. Now I'd like to make my content indexed by google and other Search engines, all the text content is inside the imgs, So I've got the text in ALT attribute. My question is: if a dinamically change the imgs ALT attribute using JS, will spiders be able to read it properly? consider that I'm using SWFaddress to create a sitemap.. Thanks

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• Are closures in javascript recompiled

  - by Discodancer

  Let's say we have this code (forget about prototypes for a moment): function A(){ var foo = 1; this.method = function(){ return foo; } } var a = new A(); is the inner function recompiled each time the function A is run? Or is it better (and why) to do it like this: function method = function(){ return this.foo; } function A(){ this.foo = 1; this.method = method; } var a = new A(); Or are the javascript engines smart enough not to create a new 'method' function every time? Specifically Google's v8 and node.js. Also, any general recommendations on when to use which technique are welcome. In my specific example, it really suits me to use the first example, but I know thath the outer function will be instantiated many times.

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• postfix cannot send email

  - by AKLP

  I'd like to mention that im really new to this so please bear with me. I'm trying to setup a forum software to send emails via postfix but I think my server has the port 25 blocked. I tried running these: works: ping alt2.gmail-smtp-in.l.google.com don't work: telnet alt2.gmail-smtp-in.l.google.com 25 telnet 66.249.93.114 25 tried flushing iptables and then using these rules but didn't work either: sudo iptables --flush sudo iptables -P INPUT ACCEPT sudo iptables -P OUTPUT ACCEPT sudo iptables -P FORWARD ACCEPT sudo iptables -F sudo iptables -X doing a telnet on 25 port to localhost url works but nothing when telnet'ing in none local urls. mail.log: Oct 17 01:20:24 webhost postfix/smtp[3642]: connect to alt2.gmail-smtp-in.l.google.com[2607:f8b0:400e:c03::1a]:25: Connection timed out Oct 17 01:20:24 webhost postfix/smtp[3643]: connect to alt2.gmail-smtp-in.l.google.com[2607:f8b0:400e:c03::1a]:25: Connection timed out Oct 17 01:20:24 webhost postfix/smtp[3642]: 4744380032: to=<[email protected]>, relay=none, delay=2892, delays=2741/0.03/150/0, dsn=4.4.1, status=deferred (connect to alt2.gmail-smtp-in.l.google.com[2607:f$

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• Wordpress blog with Joomla?

  - by user427902

  Hi, I had this Wordpress installation which was installed in a subfolder (not root). Like http: //server/blog/. Now, I installed Joomla on the root (http: //server/). Everything seems to be working fine with the Joomla part. However, the blog part is messed up. If I try to browse the homepage of my blog which is http: //server/blog/ it works like a charm. But while trying to view individual blog pages like say, http: //server/blog/some_category/some_post I get a Joomla 404 page. So, I was wondering if it was possible to use both Wordpress and Joomla in the same server in the setup I am trying to. Let me clarify that I am NOT looking to integrate user login and other such things. I just want the blog to be functional under a subfolder while I run the Joomla site in the root. So, what is the correct way to go about it. Can this be solved by any .config edits or something else? Edit: Here's the .htaccess for Joomla ... (I can't find any .htaccess for Wp though, still looking for it.) ## # @version $Id: htaccess.txt 14401 2010-01-26 14:10:00Z louis $ # @package Joomla # @copyright Copyright (C) 2005 - 2010 Open Source Matters. All rights reserved. # @license http://www.gnu.org/copyleft/gpl.html GNU/GPL # Joomla! is Free Software ## ##################################################### # READ THIS COMPLETELY IF YOU CHOOSE TO USE THIS FILE # # The line just below this section: 'Options +FollowSymLinks' may cause problems # with some server configurations. It is required for use of mod_rewrite, but may already # be set by your server administrator in a way that dissallows changing it in # your .htaccess file. If using it causes your server to error out, comment it out (add # to # beginning of line), reload your site in your browser and test your sef url's. If they work, # it has been set by your server administrator and you do not need it set here. # ##################################################### ## Can be commented out if causes errors, see notes above. Options +FollowSymLinks # # mod_rewrite in use RewriteEngine On ########## Begin - Rewrite rules to block out some common exploits ## If you experience problems on your site block out the operations listed below ## This attempts to block the most common type of exploit `attempts` to Joomla! # ## Deny access to extension xml files (uncomment out to activate) #<Files ~ "\.xml$"> #Order allow,deny #Deny from all #Satisfy all #</Files> ## End of deny access to extension xml files RewriteCond %{QUERY_STRING} mosConfig_[a-zA-Z_]{1,21}(=|\%3D) [OR] # Block out any script trying to base64_encode crap to send via URL RewriteCond %{QUERY_STRING} base64_encode.*\(.*\) [OR] # Block out any script that includes a <script> tag in URL RewriteCond %{QUERY_STRING} (\<|%3C).*script.*(\>|%3E) [NC,OR] # Block out any script trying to set a PHP GLOBALS variable via URL RewriteCond %{QUERY_STRING} GLOBALS(=|\[|\%[0-9A-Z]{0,2}) [OR] # Block out any script trying to modify a _REQUEST variable via URL RewriteCond %{QUERY_STRING} _REQUEST(=|\[|\%[0-9A-Z]{0,2}) # Send all blocked request to homepage with 403 Forbidden error! RewriteRule ^(.*)$ index.php [F,L] # ########## End - Rewrite rules to block out some common exploits # Uncomment following line if your webserver's URL # is not directly related to physical file paths. # Update Your Joomla! Directory (just / for root) # RewriteBase / ########## Begin - Joomla! core SEF Section # RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_FILENAME} !-d RewriteCond %{REQUEST_URI} !^/index.php RewriteCond %{REQUEST_URI} (/|\.php|\.html|\.htm|\.feed|\.pdf|\.raw|/[^.]*)$ [NC] RewriteRule (.*) index.php RewriteRule .* - [E=HTTP_AUTHORIZATION:%{HTTP:Authorization},L] # ########## End - Joomla! core SEF Section

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• Why shouldn't I use Flash?

  - by acidzombie24

  I heard many times i should avoid flash for my website. Yet no one has told me a good reason. I searched for reasons and i see many that are not true (such as text in flash are not indexable by search engines) or may not necessarily be true or significant enough (eating more bandwidth. Would a JS equivalent be bigger or smaller?). My site uses flash to playback sound (m4a). I dont have to worry about indexing, the back button not working, etc. But i have feeling there may be other reasons. What are reasons i shouldnt use flash on my website. I'll note one, the fact iphone/itouch and mobile devices does not support it. Not a big deal for most sites and is obvious. What are reason to avoid flash on my site?

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• Forward request through IPTables

  - by Jeremy

  I have a server running CentOS with 50 IP addresses on it. I was looking to use it as a proxy server (not just HTTP), but can't find any examples on how to set up the IP Tables. I want to proxy into IP-X and have my request look like its coming from IP-X. I currently do this on squid, but we need to proxy more than just HTTP traffic. Here is an example of the squid config: acl users src 255.255.255.255 #Locked down IP address acl all src 0.0.0.0/0.0.0.0 # http access rules http_access deny !users http_access allow users http_reply_access deny !users http_reply_access allow users icp_access deny all #ip_addresses acl ip3 myip 10.1.1.3 tcp_outgoing_address 10.1.1.3 ip3 Do to IP restrictions I need access to IMAP, POP and SMTP through a proxy. I want to use the server I already pay for that has 50 IPs on it as the proxy server.

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• Will the <b> and <i> tags ever become deprecated?

  - by CrazyJugglerDrummer

  (This is more of a curiousity question than any pending disaster :D ) So the <b> and <i> tags have been around since near the beginning of the web (I assume). But now we have CSS and many people apposing "stylistic html tags." They are stylistic tags, but they're really not so bad, as they save us from having to make a <span class="bold"> a whole bunch of times, reducing download times. Seeing as they don't take up much space, are easy to use, can possibly be useful to screen-readers, search engines, and other applications that don't care much about how a document looks, and removing them would break TONS of html code, I'm guessing probably not, but I still wanted to bring up the topic. :)

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• Templating Engine to Generate Simple Reports in .NET

  - by dr. evil

  I'm looking for a free templating engine to generate simple reports. I want some basic features such as : Ability to Write Loops (with any IEnumerable) Passing Variables Passing Templates Files (main template, footer, header) I'll use this to generate reports in HTML and XML. I'm not looking for a ASP.NET Template Engine. This is for a WinForms applications. I've seen this question http://stackoverflow.com/questions/340095/can-you-recommend-a-net-template-engine, however all of those template engines are total overkill for me and focused for ASP.NET. Please only recommend free libraries. // I'm still looking an NVelocity but it doesn't look any promising for .NET, overly complicated, when you download it's bunch of files not clear what to do, no tutorial, startup document etc.

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• Unable to change IP address for eth0 without restart in Ubuntu

  - by Rodnower

  I have Ubuntu 12.04.1 installed. I tried to change the IP address of the interface eth0 in /etc/network/interfaces from 192.168.1.3 to 192.168.1.4 auto lo iface lo inet loopback pre-up iptables-restore < /etc/iptables.up.rules auto eth0 iface eth0 inet static address 192.168.1.4 gateway 192.168.1.1 netmask 255.255.255.0 network 192.168.1.0 broadcast 192.168.1.255 sudo service networking status When I issue: sudo service networking restart I get this response: stop: Unknown instance: networking stop/waiting And IP remains 192.168.1.3: eth0 Link encap:Ethernet HWaddr 00:1e:33:71:cd:a4 inet addr:192.168.1.3 Bcast:192.168.1.255 Mask:255.255.255.0 inet6 addr: fe80::21e:33ff:fe71:cda4/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:3861 errors:0 dropped:0 overruns:0 frame:0 TX packets:3291 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:3423285 (3.4 MB) TX bytes:521854 (521.8 KB) Interrupt:45 Base address:0x4000 Only after restart does the IP change. Any ideas?

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• How to configure something like "Reflexive ACL" on OpenBSD?

  - by Earlz

  My U-Verse modem has something called "Reflexive ACL" described as Reflexive ACL: When IPv6 is enabled, you can enable Reflexive Access Control Lists to deny inbound IPv6 traffic unless this traffic results from returning outgoing packets (except as configured through firewall rules). This seems like a pretty good way to keep from having to maintain a firewall on each computer behind my router that gets handed an IPv6 address. It sounds about like a NAT, which for my small home network is all I want right now. Now my modem sucks as a router though, so I'm in the process of configuring an OpenBSD router to do that. I've got IPv6 supported and all that and my OpenBSD router will hand out IPv6 addresses by rtadvd. Now I want to keep people from having instant access to my local network through IPv6. How would I best do something like Reflexive ACL with pf in OpenBSD 5.0?

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• VM clients can not access WAN

  - by Saariko

  I have a new VM host on my network, on a Dell R620. The dedicated iDrac is connected with static IP of: 192.168.3.x NIC #1 is connected to my router The eSXI 5.1 host is with IP of 192.168.3.250 The vSphere appliance has a static IP of 192.168.3.241 All the clients on the new host are in the same network 192.168.3.x All clients are Windows 2008 R2 My problem is that non of the clients can access the WAN. I can't ping anything which is beyond my router. I CAN ping anything within my router, even if it's on a different subnet - 192.168.0.x (Router rules are in tact and working) I can ping the gateway (192.168.3.254) One thing that I checked, and is bothering my (but don't know if it has any relevance) is that on the Host Networking properties, there is a vmnic0 (picture) that shows as if it only recognizes 192.168.0.x network - is that so? The command: route print shows me the following details, where I have a duplicate entry for 0.0.0.0 (and one is wrong) - which is probably also why it's not working

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• Reverse Proxy (mod_rewrite) and Rails (absolute paths)

  - by SooDesuNe

  I have front end rails app, that reverse proxies to any of a number of backend rails apps depending on URL, for example http://www.my_host.com/app_one reverse proxies to http://www.remote_host_running_app_one.com such that a URL like http://www.my_host.com/app_one/users will display the contents of http://www.remote_host_running_app_one.com/users I have a large, and ever expanding number of backends, so they can not be explicitly listed anywhere other than a database. This is no problem for mod_rewrite using a prg:/ rewrite map reverse proxy. The question is, the urls returned by rails helpers have the form /controller/action making them absolute to the root. This is a problem for the page served by mod_rewrite because links on the proxied page appear as absolute to the domain. i.e.: http://www.my_host.com/app_one/controller/action has links that end up looking like /controller/action/ when they need to look like /app_one/controller/action mod_proxy_html seems like the right idea, but it doesn't seem to be as dynamic as I would need, since the rules need to be hard coded into the config files. Is there a way to fix this server-side, so that the links will be routed correctly?

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• Does setting an A record for a root domain set it (automatically) for subdomains?

  - by Edan Maor

  I bought a domain from Dreamhost, but my servers are actually running on Amazon's AWS. I have an Elastic IP, say 1.1.1.1. In the Dreamhost panel, I've added an A record for my domain name, pointing it to 1.1.1.1. My question is, are all subdomains (e.g. www.mydomain.com, a.mydomain.com, etc.) automatically mapped to 1.1.1.1 as well, because the root is? Or do I have to add separate rules for each subdomain?

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• Outlook 2007 Script that sends new form email when a message is dragged and dropped into a folder

  - by Mark

  Is it possible to write a script that will allow Outlook to automatically send out a new email to a distribution list when you drag and drop and previously opened email into a specified folder? The rules only let you apply them to received and sent messages. They do not allow you to apply it to anything that is dragged and dropped after being opened. It baffles me that Novell Groupwise had this functionality but Outlook 2007 does not. If someone can assist me in writing a script/macro to provided this functionality, it would be greatly appreciated. Thank you.

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• Level editor for 3D games with open format or API?

  - by furtelwart

  I would like to experiment with machine generated levels for a 3D game. I'm very open which game this will be. I just like the idea to run through a generated map. For this approach, it would be great if I can use an API or an open format for level designs. Is there an open source level system that can be used in several game engines (ego shooter or whatever)? I don't know if I explained my point clearly, so please add a comment with your question. I will try to clearify my point.

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• Best way to use mod_rewrite to replace WordPress pages with static files

  - by David Moles

  Here's the situation: I've got an old WordPress installation that I'd like to archive as static files, but I'd also like to preserve old URLs. I've already created the static archive with wget and sorted out the filenames and links. Now I'd like to configure Apache to intercept requests for the old dynamic URL and replace them with the new static one, e.g.: http://www.example.org/log/?p=1234 or http://www.example.org/log/index.php?p=1234 should redirect to http://www.example.org/log/archives/1234.html I've tried adding the following to the VirtualHost config for example.org, but to no effect -- I just get the PHP page. RewriteCond %{REQUEST_URI} /log/ RewriteCond %{QUERY_STRING} p=([^&;]*) RewriteRule ^/$ http://%{SERVER_NAME}/log/archives/%1.html [R,L] I've enabled logging and I can see what look like other rules being applied, but not this one. None of my other guesses at match patterns for %{REQUEST_URI} seem to have any effect either (log, log/, log.*, even .*). I'm new to mod_rewrite and this is mostly cargo cult, so I'm pretty sure I've gotten it wrong. Anyone know what I should be doing here?

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• What is the right iptables rule to allow apt-get to download programs?

  - by anthony01

  When I type something like sudo apt-get install firefox, everything work until it asks me: After this operation, 77 MB of additional disk space will be used. Do you want to continue [Y/n]? Y Then error messages are displayed: Failed to fetch: <URL> My iptables rules are as follows: -P INPUT DROP -P OUTPUT DROP -P FORWARD DROP -A INPUT -i lo -j ACCEPT -A OUTPUT -o lo -j ACCEPT -A INPUT -p tcp --dport 80 -m state --state NEW,ESTABLISHED -j ACCEPT -A OUTPUT -p tcp --sport 80 -m state --state ESTABLISHED -j ACCEPT What should I add to allow apt-get to download updates? Thanks

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• Inaccurate bandwidth limiting in altq queues

  - by overkordbaever

  I'm setting up an environment where I have one Linux server, one OpenBSD router and one Linux client and I want to be able to limit how much bandwidth the client should be able to use. I've been performing these tests with "netcat" and "time" (using time to measure the time of the transfer with netcat), and what happens when trying these tests (using the TCP protocol, the queues will for some reason not work with UDP) is that the queues aren't exact at all. For example: when setting a bandwidth limit of 10mbit, the client cannot use more than five mbits, when setting a limit of 100mbit, the client cannot use more than around 50mbit. The config looks like (using a 100mbit limit in the example): #queue rules altq on { $int_if, $ext_if } cbq bandwidth 100Mb queue { def, low } queue def bandwidth 0Mb cbq(default) queue low bandwidth 100Mb cbq(default) #Passrules test pass out quick from $int_if to $ext_if queue low pass in quick from $ext_if to $int_if queue low pass out quick from $ext_if to $int_if queue low pass in quick from $int_if to $ext_if queue low

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