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• Using *.html extension in dynamic UR's for SEO

  - by lostaman

  Hi all My situation is. I have a project planned to be built on ASP.NET MVC 2. And one of the major requirements is SEO optimization. A customer wants to use static-like URLs that end up with .html extension for this project that make URLs more SEO friendly. E.g. "mysite.com/about.html " or "mysite.com/items/getitem/5.html" etc. I wonder is there any benefit from SEO perspective to use .html extension in dynamic URLs? Are Google and other search engines rank work better with such URLs?

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• Redirects in RoR: Which one to use?

  - by scrr

  Hello, we are making a website that takes a generated incoming link and forwards the user who is clicking on it to another website while saving a record of the action in our DB. I guess it's basically what ad-services like AdSense do. However, what is the best way to redirect the user? I think html-meta-tag-redirects are out of question. So what other options are there? head :moved_permanently, :location => "http://www.domain.com/" This one is a 301-redirect. The next one is a 302: redirect_to "http://www.domain.com" Are there any others? And which is best to use for our case? The links are highly-dynamic and change all the time. We want to make sure we don't violate any existing standards and of course we don't want search-engines to tag us as spammers (which we are not, btw). Thanks!

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• php script redirecting code problem

  - by tibin mathew

  hi, i'm using a php script for redirection after detecting the search word to my websiter from the search engines . and my redirection code is working fine but for some keywods i wat to stay in the same page. for that lines of code i'm getting a warning message in that pages. Warning: headers already sent (output started at /home/friendsj/public_html/index.php:2) in /home/friendsj/public_html/index.php on line 20 below is the code i used in that pages $ref=$_SERVER['HTTP_REFERER']; if(strstr($ref,"test")) { $url="http://www.howtomark.com/robgoyette.html"; } elseif(strstr($ref,"mu+word+gmail")) { $url="http://www.howtomark.com/marketbetter.html"; } else { if(strstr($ref,"how+to+market+better")) { } } if($url !="") { header("Location:$url"); }

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• Using Apache Environment Variables to set custom ErrorDocument

  - by Tad

  I've got a set of RewriteCond rules that test for various mobile devices and then set environment variables like "env=device:.iphone" or "env=device:.smartphone" if the useragent matches an iPhone or Android device. I'm trying to now redirect the user to custom-styled 404/500 server error pages for each device, by way of the error pages. Ideally I'd like to be able to test for a variable being there, and then write in a custom ErrorDocument string. But an apache doesn't seem to work in this case. Any ideas how I can construct if/else tests in an apache conf file for environment vars?

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• net c# lock statement in data access layer

  - by Pedro Rivera

  I saw a code where they have the data access layer like this: public class CustomerDA{ private static readonly object _sync = new object(); private static readonly CustomerDA _mutex = new CustomerDA(); private CustomerDA(){ } public CustomerDA GetInstance(){ lock(_sync){ return _mutex; } } public DataSet GetCustomers(){ //database SELECT //return a DataSet } public int UpdateCustomer(some parameters){ //update some user } } public class CustomerBO{ public DataSet GetCustomers(){ //some bussiness logic return CustomerDA.GetInstance().GetCustomers(); } } I was using it, but start thinking... "and what if had to build a facebook like application where there are hundreds of thousands of concurrent users? would I be blocking each user from doing his things until the previous user ends his database stuff? and for the Update method, is it useful to LOCK THREADS in the app when database engines already manage concurrency at database server level?" Then I started to think about moving the lock to the GetCustomers and UpdateCustomer methods, but think again: "is it useful at all?"

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• Logfiles filling with iptables logging

  - by Peter I

  OS: Debian 6 Server Version I have different logfiles which are filling up: user@server:/var/log$ ls -lahS | head total 427G -rw-r--r-- 1 root root 267G Nov 2 17:29 bandwidth -rw-r----- 1 root adm 44G Nov 2 17:29 kern.log -rw-r----- 1 root adm 27G Nov 2 17:29 debug -rw-r----- 1 root adm 23G Oct 27 06:33 kern.log.1 -rw-r----- 1 root adm 17G Nov 2 17:29 messages -rw-r----- 1 root adm 14G Oct 27 06:33 debug.1 -rw-r----- 1 root adm 12G Nov 2 17:29 syslog -rw-r----- 1 root adm 12G Nov 1 06:26 syslog.1 -rw-r----- 1 root adm 9.0G Oct 27 06:33 messages.1 So I looked up the file /etc/iptables.up.rules which had those lines in it: -A FORWARD -o eth0 -j LOG --log-level 7 --log-prefix BANDWIDTH_OUT: -A FORWARD -i eth0 -j LOG --log-level 7 --log-prefix BANDWIDTH_IN: -A OUTPUT -o eth0 -j LOG --log-level 7 --log-prefix BANDWIDTH_OUT: -A INPUT -i eth0 -j LOG --log-level 7 --log-prefix BANDWIDTH_IN: So deleting those lines will solve my problem. But how would I edit those lines without losing their functionality?

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• Bad request - Invalid Hostname Error when using ARR IP address

  - by syloc

  I'm trying to setup a simple ARR system. I have 1 ARR machine load balancing between 2 APP servers. I can reach the app sites if i use the server name of the ARR machine. (http://arrserver/app) But i can't do it with its IP address. (http://10.7.10.25/app). It gives the "Bad Request - Invalid Hostname". In the ARR machine i configured the default site's bindings to "All Unassigned","80" (default values). Do i need to change the binding rule or need additional url rewrite rules? And also, in the ARR server http://127.0.0.1/app doesn't work. But http://localhost/app works fine. Thx in advance

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• How can I debug Cisco Firewall ASA "Dispatch Unit" very high CPU utilisation from ASDM?

  - by Andy

  I have recently had my first firewall installed so I am very new to this whole situation. I am finding that Dispatch unit is becoming overloaded and it would appear to be the reason I get serious bouts of lag on my server. The firewall has had little configuration apart from me blocking all the ports in "Access Rules" and allowing only the ones the server needs and from where it needs them. I guess what I am after is assistance with locating the issues causing "Dispatch Unit" to take up all the CPU Regards --Edit-- With ASDM statistics I found that packets inbound (peak of 70-100k/sec from <1k/sec normal), traffic inbound (peak of 40-50kbits/sec from <1kbits/sec normal) and CPU all peak at the same time so I am pretty sure it is an attack of some sort but as a beginner with ASA I am not sure how to resolve

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• Can 3D OpenGL game written in Python look good and run fast?

  - by praavDa

  I am planning to write an simple 3d(isometric view) game in Java using jMonkeyEngine - nothing to fancy, I just want to learn something about OpenGL and writing efficient algorithms (random map generating ones). When I was planning what to do, I started wondering about switching to Python. I know that Python didn't come into existence to be a tool to write 3d games, but is it possible to write good looking games with this language? I have in mind 3d graphics, nice effects and free CPU time to power to rest of game engine? I had seen good looking java games - and too be honest, I was rather shocked when I saw level of detail achieved in Runescape HD. On the other hand, pygame.org has only 2d games, with some starting 3d projects. Are there any efficient 3d game engines for python? Is pyopengl the only alternative? Good looking games in python aren't popular or possible to achieve? I would be grateful for any information / feedback.

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• Check a list of passwords strength

  - by user144705

  Is there any way to check a list of passwords whether they strong or not? I have a list of passwords, around 2000, and want to check them against this policy Password must contain a minimum of eight (8) characters Password must contain at least one letter Password must contain at least one number Password must contain at least one punctuation character And count how many compliant with that policy before we save them. Is there any tool, script or maybe rules in excel to do this instead of doing it manually? Could you please help me?

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• monitor just what's going on -on a firewall

  - by bbutle01

  I have this little snapgear firewall. It's a little purpose built box running a custom linux, SH4 processor @240 Mhz, 64MB of ram. Basically how close we are to capacity is a mystery to me. I know I can run top and see the status of all the processes, but how can I see just how much of the processor is going to passing data... and how to estimate when I'm going to need to upgrade, and by tweaking iptables rules, how does that help/hurt the processor. suggestions?

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• Can't Allow Specific Port in Windows Firewall Advanced Security - Windows 2008

  - by Jody

  In the Outbound Rules, I set up a rule to allow outbound connection from port 26. But, it doesn't work. However, if I allow "all port" for this rule, this will work, but then all ports will be allowed too. What is the reason? Is there any conflicting rule? I need to fix this as soon as possible. -Edit to add : I'm trying to allow email access to mail server outside (port 26). The thing is, even if I telnet using port 26, it will not work, unless I allow "all ports". Specific port will not do.

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• Passenger, Apache and avoiding page caching

  - by user38382

  I'm hosting a rack application with passenger and apache. The application is setup to cache the content of each request to the public directory after each request. This allows apache to serve the content directly as a static page for future requests. I would like to tell Apache, presumably through some rewrite rules that any requests with query parameters should not be cached, but instead passed down to the rack application. With a mongrel setup I would just redirect it to the balancer if it meets my rewrite conditions. How do you do the same with passenger?

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• htaccess order Deny,Allow rule

  - by aspiringCodeArtisan

  I'd like to dynamically add IPs to a block list via htaccess. I was hoping someone could tell me if the following will work in my case (I'm unsure how to test via localhost). My .htaccess file will have the following by default: order allow,deny allow from all IPs will be dynamically appended: Order Deny,Allow Allow from all Deny from 192.168.30.1 The way I understand this is that it is by default allow all with the optional list of deny rules. If I'm not mistaken Order Deny,Allow will look at the Deny list first, is this correct? And does the Allow from all rule need to be at the end?

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• Is it possible to limit output bandwidth between eth0 and lo?

  - by mmcbro

  I'm trying to limit the bandwidth between my eth0 output (nginx proxy) to my loopback inteface (apache) by filtering on destination port. Incoming Packet -> Eth0 -> 0.0.0.0:80 Nginx -> tc qdisc class/iptable mangle 2525port -> 127.0.0.1:2525 Apache I don't know if it's even possible I'm just experimenting. My rules are the followings : tc qdisc add dev eth0 root handle 1:0 htb tc class add dev eth0 parent 1:0 classid 1:10 htb rate 2mbps ceil 2mbps prio 0 tc filter add dev eth0 parent 1:0 prio 0 protocol ip handle 10 fw flowid 1:10 iptables -A OUTPUT -t mangle -p tcp --dport 2525 -j MARK --set-mark 10 I also tried to with FORWARD chain but its still the same.

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• Why can't my networks reach each other?

  - by HOLOGRAPHICpizza

  We have two Buffalo WZR-HP-G300NH2 routers, with the default firmware, DD-WRT v24SP2-MULTI (10/31/11) std - build 17798. Each has a separate cable internet connection with a public static IP address. They are both in the 24.123.68.0/24 space. Both of them can contact pretty much the whole internet, and they can both be accessed out on the internet with no problem, but for some reason they can't talk to each other! When I try to ping one from the other I always get "Destination Host Unreachable". There are no strange routing or firewall rules in place. And they are both set to respond to pings, I can ping them from outside. Our main IT guy is going to call our ISP on Monday, but I'm impatient, so does anyone have any ideas?

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• Advanced merge directory tree with cp in Linux

  - by mtt

  I need to: Copy all of a tree's folders (with all files, including hidden) under /sourcefolder/* preserving user privileges to /destfolder/ If there is a conflict with a file (a file with the same name exists in destfolder), then rename file in destfolder with a standard rule, like add "old" prefix to filename (readme.txt will become oldreadme.txt) copy the conflicted file from source to destination Conflicts between folders should be transparent - if same directory exists in both sourcefolder and destfolder, then preserve it and recursively copy its content according to the above rules. I need also a .txt report that describes all files/folders added to destfolder and files that were renamed. How can I accomplish this?

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• C# WebClient - View source question

  - by Jim

  I'm using a C# WebClient to post login details to a page and read the all the results. The page I am trying to load includes flash (which, in the browser, translates into HTML). I'm guessing it's flash to avoid being picked up by search engines??? The flash I am interested in is just text (not an image/video) etc and when I "View Selection Source" in firefox I do actually see the text, within HTML, that I want to see. (Interestingly when I view the source for the whole page I do not see the text, within HTML, that I want to see. Could this be related?) Currently after I have posted my login details, and loaded the HTML back, I see the page which does NOT show the flash HTML (as if I had viewed source for the whole page). Thanks in advance, Jim PS: I should point out that the POST is actually working, my log in is successful.

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• Firewall GPO not applying despite being enumerated by gpresult

  - by jshin47

  I have a need to open up the admin$ share on all of my domain's client PC's and I am trying to do so using group policy. I defined computer policy for Windows Firewall with Advanced Security in a policy object linked to the appropriate container and added the appropriate rules. However, they are not being applied! I feel like I have tried all of the obvious steps: I've checked gpresult and the resulting set of policy is the way that I would expect it to look. I've gpupdate /force and gpupdate /sync on a few client computers, but no matter what I do they don't seem to respond to my changes. I know that other computer policies in the GPO are being applied so it is strange that these are not. I have also disabled exceptions on clients in the firewall GPO, but that doesn't seem to be applying either. Here is a screenshot of the firewall.cpl from a client: Basically, although other options in the same GPO ARE applied for computer policy, the firewall settings seem to be ignored.

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• Is it possible to use re2 from Python?

  - by flow

  i just discovered http://code.google.com/p/re2, a promising library that uses a long-neglected way (Thompson NFA) to implement a regular expression engine that can be orders of magnitudes faster than the available engines of awk, Perl, or Python. so i downloaded the code and did the usual sudo make install thing. however, that action had seemingly done little more than adding /usr/local/include/re2/re2.h to my system. there seemed to be some `*.a file in addition, but then what is it with this *.a extension? i would like to use re2 from Python (preferrably Python 3.1) and was excited to see files like make_unicode_groups.py in the distro (maybe just used during the build process?). those however were not deployed on my machine. how can i use re2 from Python?

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• What are your "must have", free (gratis), programs?

  - by flybywire

  Poll: What software must you always keep handy? I don't care if it is open source, freeware, or demo, as long as its price is $0. Neither do I care if it is for desktops, handhelds, netbooks, web based, cellphones. If it is free to use – and essential to your happiness and well-being – put it in this list. Rules: Please, list only ONE application per answer, so that people can vote up the items that they prefer. Please do not post applications that have already been posted - instead, up-vote the existing answer.

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• How to open a server port outside of an OpenVPN tunnel with a pf firewall on OSX (BSD)

  - by Timbo

  I have a Mac mini that I use as a media server running XBMC and serves media from my NAS to my stereo and TV (which has been color calibrated with a Spyder3Express, happy). The Mac runs OSX 10.8.2 and the internet connection is tunneled for general privacy over OpenVPN through Tunnelblick. I believe my anonymous VPN provider pushes "redirect_gateway" to OpenVPN/Tunnelblick because when on it effectively tunnels all non-LAN traffic in- and outbound. As an unwanted side effect that also opens the boxes server ports unprotected to the outside world and bypasses my firewall-router (Netgear SRX5308). I have run nmap from outside the LAN on the VPN IP and the server ports on the mini are clearly visible and connectable. The mini has the following ports open: ssh/22, ARD/5900 and 8080+9090 for the XBMC iOS client Constellation. I also have Synology NAS which apart from LAN file serving over AFP and WebDAV only serves up an OpenVPN/1194 and a PPTP/1732 server. When outside of the LAN I connect to this from my laptop over OpenVPN and over PPTP from my iPhone. I only want to connect through AFP/548 from the mini to the NAS. The border firewall (SRX5308) just works excellently, stable and with a very high throughput when streaming from various VOD services. My connection is a 100/10 with a close to theoretical max throughput. The ruleset is as follows Inbound: PPTP/1723 Allow always to 10.0.0.40 (NAS/VPN server) from a restricted IP range >corresponding to possible cell provider range OpenVPN/1194 Allow always to 10.0.0.40 (NAS/VPN server) from any Outbound: Default outbound policy: Allow Always OpenVPN/1194 TCP Allow always from 10.0.0.40 (NAS) to a.b.8.1-a.b.8.254 (VPN provider) OpenVPN/1194 UDP Allow always to 10.0.0.40 (NAS) to a.b.8.1-a.b.8.254 (VPN provider) Block always from NAS to any On the Mini I have disabled the OSX Application Level Firewall because it throws popups which don't remember my choices from one time to another and that's annoying on a media server. Instead I run Little Snitch which controls outgoing connections nicely on an application level. I have configured the excellent OSX builtin firewall pf (from BSD) as follows pf.conf (Apple App firewall tie-ins removed) (# replaced with % to avoid formatting errors) ### macro name for external interface. eth_if = "en0" vpn_if = "tap0" ### wifi_if = "en1" ### %usb_if = "en3" ext_if = $eth_if LAN="{10.0.0.0/24}" ### General housekeeping rules ### ### Drop all blocked packets silently set block-policy drop ### all incoming traffic on external interface is normalized and fragmented ### packets are reassembled. scrub in on $ext_if all fragment reassemble scrub in on $vpn_if all fragment reassemble scrub out all ### exercise antispoofing on the external interface, but add the local ### loopback interface as an exception, to prevent services utilizing the ### local loop from being blocked accidentally. ### set skip on lo0 antispoof for $ext_if inet antispoof for $vpn_if inet ### spoofing protection for all interfaces block in quick from urpf-failed ############################# block all ### Access to the mini server over ssh/22 and remote desktop/5900 from LAN/en0 only pass in on $eth_if proto tcp from $LAN to any port {22, 5900, 8080, 9090} ### Allow all udp and icmp also, necessary for Constellation. Could be tightened. pass on $eth_if proto {udp, icmp} from $LAN to any ### Allow AFP to 10.0.0.40 (NAS) pass out on $eth_if proto tcp from any to 10.0.0.40 port 548 ### Allow OpenVPN tunnel setup over unprotected link (en0) only to VPN provider IPs ### and port ranges pass on $eth_if proto tcp from any to a.b.8.0/24 port 1194:1201 ### OpenVPN Tunnel rules. All traffic allowed out, only in to ports 4100-4110 ### Outgoing pings ok pass in on $vpn_if proto {tcp, udp} from any to any port 4100:4110 pass out on $vpn_if proto {tcp, udp, icmp} from any to any So what are my goals and what does the above setup achieve? (until you tell me otherwise :) 1) Full LAN access to the above ports on the mini/media server (including through my own VPN server) 2) All internet traffic from the mini/media server is anonymized and tunneled over VPN 3) If OpenVPN/Tunnelblick on the mini drops the connection, nothing is leaked both because of pf and the router outgoing ruleset. It can't even do a DNS lookup through the router. So what do I have to hide with all this? Nothing much really, I just got carried away trying to stop port scans through the VPN tunnel :) In any case this setup works perfectly and it is very stable. The Problem at last! I want to run a minecraft server and I installed that on a separate user account on the mini server (user=mc) to keep things partitioned. I don't want this server accessible through the anonymized VPN tunnel because there are lots more port scans and hacking attempts through that than over my regular IP and I don't trust java in general. So I added the following pf rule on the mini: ### Allow Minecraft public through user mc pass in on $eth_if proto {tcp,udp} from any to any port 24983 user mc pass out on $eth_if proto {tcp, udp} from any to any user mc And these additions on the border firewall: Inbound: Allow always TCP/UDP from any to 10.0.0.40 (NAS) Outbound: Allow always TCP port 80 from 10.0.0.40 to any (needed for online account checkups) This works fine but only when the OpenVPN/Tunnelblick tunnel is down. When up no connection is possbile to the minecraft server from outside of LAN. inside LAN is always OK. Everything else functions as intended. I believe the redirect_gateway push is close to the root of the problem, but I want to keep that specific VPN provider because of the fantastic throughput, price and service. The Solution? How can I open up the minecraft server port outside of the tunnel so it's only available over en0 not the VPN tunnel? Should I a static route? But I don't know which IPs will be connecting...stumbles How secure would to estimate this setup to be and do you have other improvements to share? I've searched extensively in the last few days to no avail...If you've read this far I bet you know the answer :)

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• Sqlalchemy layout with WSGI application

  - by TheDude

  I'm working on writing a small WSGI application using Bottle and SqlAlchemy and am confused on how the "layout" of my application should be in terms of SqlAlchemy. My confusion is with creating engines and sessions. My understanding is that I should only create one engine with the 'create_engine' method. Should I be creating an engine instance in the global namespace in some sort of singleton pattern and creating sessions based off of it? How have you done this in your projects? Any insight would be appreciated. The examples in the documentation dont seem to make this entirely clear (unless I'm missing something obvious). Any thoughts?

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• What's the situation that requires stateful firewall?

  - by Eonil

  I just know there is two kind of firewalls. Stateless and stateful. It's hard to determine what kind of firewall I have to use. Currently I have to run firewall within same machine runs services, Basically I want stateless because of its less resource consumption. However if it is not sufficient for security, it's meaningless. I'll run HTTP, SSH, NFS (only over SSH), and some custom made server on several TCP/UDP ports. Should I use stateful firewall? (edit) Maybe the question can be assumed as 'Should I use stateful rules?'.

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• Nginx proxy to Apache - resolve HTTP ORIGIN

  - by Fratyr

  I have a server setup with nginx serving static content and proxy all PHP/dynamic requests to apache on 127.0.0.1 I'm building an API for my databases, and I need to allow clients by their origin (domain name), rather than just IP. Based on CORS rules. So when I send an HTTP header header("Access-Control-Allow-Origin: www.client-requesting.myapi.com"); from my API server, I have to tell it which origin I allow, otherwise client side requests won't work to my API due to same-origin policy. The question is how can I know which domain name (if any) called my API? What should be the nginx and apache configuration to pass the origin parameter? I tried to google, and all I found is some possible solution with mod_rpaf, but I wanted to be sure. Thanks!

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