Does anyone know how to detect a guest network as a captive portal.
I mean can i detect a network as a CAPTIVE PORTAL.
After doing some digging and trying different captive portals, it seems that they all work differently... some of them do DNS trick(DNS responds with same IP address for any query), some of them just do some kind of transparent http proxy magic probably using squid or packet level forwarding/redirecting (like one could do with iptables) so that no matter what the URL you're presented with the login screen, and in such cases, DNS queries will be answered with correct IP address, but connecting to port 80 on that host name will result in you being redirected to login page...
I tried this idea but no luck!
Is there any way to detect a network as hotspot(captive portal) where http login is required???
Thanks in advance
Puneet
The Apple solution is to GET http://www.apple.com/library/test/success.html - if it's not successful assume a captive portal and launch the web browser. You could try something similar if you can set up a server, and launch a QWebView in the case of failure.
Related
I have an ASP.NET web application that has been hosted in IIS local Machine.
My Question is :
Is there any free or paid method that allows browsing this web
application from the internet as Host Server ?
Thanks
The easiest way to to publish it directly onto the internet. You do run the risk of attackers then being able to attach your machine, so you will need to brush up on your security skills. It might be worth looking into one of the free hosting options from AWS, Azure or Google Cloud.
To use your local machine as a web server, first, configure it to use a static IP. Its been a while since I've done it on windows, but this looks about right http://www.howtogeek.com/howto/19249/how-to-assign-a-static-ip-address-in-xp-vista-or-windows-7/.
Next you will need to configure port forwarding on your model. You want to send all traffic on port 80 to your machine, using its new fixed IP address. If your using HTTPS as well, configure port 443 to go to your machine. There are too many different modem brands, all of which handle this slightly differently, to consider offering any more help on this. You will need to do some reading up on your particular modem for step-by-step instructions.
If your internet connection is using a fixed IP, then you can stop here.
If not, or if you just want a domain name, then its worth signing up for a dynamic dns service. I use No-ip, its free, it integrates with my modem and I haven't had any problems with it in the last few years. Once this is in place, you will be able to hit your webserver just like a real one. Using something like "http://mypc.no-ip.biz/mydemoapp/
But again, be warned about exposing your machine on the internet. There are nasty people out there who love to hijack other peoples computers.
Update:
This should give you some guidance on port forwarding
http://www.howtogeek.com/66214/how-to-forward-ports-on-your-router/
Try http://www.noip.com I just logged in and it seemed happy. Otherwise, have a click through all the settings in your modem looking for ddns or dynamic DNS. There is usually a drop down of all the providers that it will talk to. And some providers have apps that you run on your PC , which is easier that working with the modem for some. (Or for models that don't support ddns.)
I need to set up Wi-Fi, where user after connecting to Wi-Fi will have to login to connect to the internet.
Like after he connects to Wi-Fi, he opens page in web browser. He will be automatically redirected to login page, where he must enter credentials and then he will get internet access.
I think that the router will somehow redirect the traffic over server in LAN and then some kind of SW running on the server will do this, but what SW should I use? I don't know how this is called, so I couldn't googled anything.
Thanks
So I managed to find it, it's called Captive portal, here is a tutorial how to do it: http://blog.trifork.com/2013/01/15/building-a-captive-portal-controlling-access-to-the-internet-from-your-network/
I have a computer with Internet access to the network by using a LAN proxy . I want to provide access when opening the browser will display the login menu if the login is successful then it could access the internet.
Whether it can be done ? I know can be done if using proxy with hotspot network.
I guess you are looking for is a captive portal.
I don't have much experience with them but you could look into packetfence, wifidog or chillispot.
I am trying to figure out why my web page isn't displaying when using my domain name. I have a local IIS 7 web server installed with an ASP.NET web site. When I go to http://localhost, my page displays fine. When I go to http://www.mysite.com, it doesn't display though. Doing a trace route on www.mysite.com shows that it is resolving to my IP address. My router is forwarding port 80 requests to the web server and I am browsing from my phone, which is on a separate IP address using 3G. I disabled my firewall and my anti-virus to make sure neither of those are interfering. I also looked at the IIS 7 log and my request does not appear to be hitting it.
Is there a way to trace the incoming request to find out where its getting thrown out at? I'm losing my mind trying to troubleshoot this and any help would be appreciated.
Is your ISP blocking port 80? I have seen lots of ISP's do this to home users in an attempt to have them upgrade their internet package to a business plan.
I'm wondering if anyone knows how this happens? My website is down, but every computer on my internet connection/router can see it. I've cleared my cache etc, but another computer in the house shouldn't be seeing a site that's offline. How weird?
It's hosted remotely, not on my network or anything.
The first question to ask yourself is, how certain are you that it's down? If computer A can access it and computer B cannot, either one could be "right":
The site could be down, and computer A could be looking at a cached version from the ISP.
The site could be up, but computer B could be having general internet connectivity problems, or problems accessing this site in particular (bad DNS cache, etc.)
One way to tell is to add some new content to the site (via FTP or an in-place content management system like wordpress, for example) and see if the computer that can access it (computer A) can see the changes. If so, then you're looking at a "live" site, where the pages are being served directly from the server. (If the server is active and runs web software like PHP or ASP, then that would be another way to "prove" that the site is up and running).
Do you know the IP address of your web server?
Do you have direct access to the Internet on port 80?
Tell if your server is up or down by doing the following
telnet 255.255.255.255 80
Where 255.255.255.255 is your web server's IP address. On windows the screen will go blank if the server answers. Then type
GET / HTTP/1.0
And hit enter twice. You should see the content of your default page. If your running as a virtual host, you'll probably need to use HTTP/1.1 and the Hostname tag.
GET / HTTP/1.1
Host: www.yourservername.com
There is one return after HTTP/1.1 and two returns after your hostname. If you get content (the correct content) back from your web server it is definitely not down. If the server fails to connect then your web server is really down, and the content your computers are seeing could be any of the following:
local page cache
local proxy server
ISP proxy server
local ARP poisoning attack redirecting you to attacker's local web server which mirrored your site.
DNS poisoning to direct your browsers to someone else's web server which mirrored your site.
If your site is up, but geographically separated folks can't see your site, it is most likely a DNS issue or an ISP level routing issue.
A good tool to check for DNS issues is OpenDNS's CacheCheck. As for the routing issue, the best bet is to call your web hosting company and see if they've had any other complaints from their other customers, or if they are currently working on a routing issue.
Internet provider cache maybe.
What DNS servers are your friends using? Same as yours?
Your ISP is probably caching the content.
i know it's down cause i asked my friends in other locations to look at it. then i ran a test using this site i found.
http://www.websitepulse.com/help/tools.php
i'm switching hosts and we're dealing with my main domain name. that's the other reason i expected this interuption. i just want to know when it's finally switched.
is ISP cache a bad thing?