How it's possible that Cloudflare proxy has always US IP address or Google, Netflix and etc when i access on their websites from Asia, why i don't see some Asia IP (I expected the most close server to me and not in US).
Why i connect like first to US IP, ok, they will have some kind of load balancer server, but for the most low latency for TTFB why it's works like that or is the US IP address associated to some Asia server?? What is the trick?
I tried find some info how it's works but it's always same answer and doesn't explain anything for me..it's just saying that it's in power of DNS..I know about GEO DNS, but there is my end, but simple GEO DNS will always show different IP then is there another layer of something?
I'm just lost..
As far as I know, the "proxy" feature of Cloudflare will always display and "use" an US based IP-Address.
Your request is still sent to the nearest Cloudflare data center (somewhere in Asia, in your case).
But the "proxy" IP (which is static), is always the same.
Not entirely sure though, might as well be worth contacting their support team and asking for exact information on this.
I am trying to set up what is possibly a webserver that can detect the IP addresses of the clients that try to access the webpage. In the simplest terms.
1)Let there be a table on the website.
2)Each time a client requests the website, its IP address gets added to the entry of the table.
I have made a webserver before using apache tomcat and even nodejs. But I have no idea how to detect IP adresses. I would also like to know if its possible to set this up online, in the cheapest possible way.
Perhaps nodejs would work using request.connection.remoteAddress, as in this example.
I am a PHP coder but not a server expert so I wondered if anyone could answer the following query.
Is there a way that a bot can determine the IP of my server when it runs through Cloudflare?
Someone suggested that folk could try ftp.domain.com and things like that. I do not have that setup on my server although Cloudflare do set this up automatically for you when you register a domain.
If you are a server expert and wanted to determine the actual IP of a server, how would you go about it?
Thanks.
PS: I do not want my IP public, hence the question.
Someone that really wants to find your server IP address probably can. We're only going to really stop basic lookups from returning your IPs, but we can only proxy web traffic & some records on your domain (mail, for example) may still return your server IP.
We do have some tips on minimizing the probability that someone could find it easily with these guidelines.
So, I have read that it is possible to trace the IP of a Facebook friend while talking to him on chat by using Fiddler and Firebug. Now, as far as I am know, Facebook uses HTTPS and all in all, I cannot seem to get anything precise from Fiddler.
May anyone be kind enough to explain if this is really possible and if so, how the process goes?
I dont have a direct answer to your question, but i can give you some guidelines:
If the chat is working as a peer-to-peer network (which i highly doubt) you can trace the incoming tcp/udp connection and search it for the message using a sniffing program (like wireshark) and from there fetch their IP.
If the chat is based on that every message goes through a server (which is probably based on SOMM. not that it matters. (Server Oriented Messaging Model)). now if it is that way there is virtually no way to figure out the IP because the servers are acting as a proxy and masking the original IP, however. if FB includes some sort of meta data (which they do for location for phones etc.) that might contain the sender IP and some other stuff like the mac address etc etc. now i'm not sure of that but its a good place to look.
If you want help with firebug and all those other html/http/browser development tools there are plenty of tutorials out there. If you already know how to use it you might want to check the resources that's loaded when a message is sent. From experience i can tell that when a comment is added to something a whole bunch of crap happens that append stuff to the current html document. but i have never ever seen some meta data through that. anyway it's a good place to start.
I am trying to build an application that can inform a user about website specific information whenever they are visiting a website that is present in my database. This must be done in a browser independent way so the user will always see the information when visiting a website (no matter what browser or other tool he or she is using to visit the website).
My first (partially successful) approach was by looking at the data packets using the System.Net.Sockets.Socket class etc. Unfortunately I discoverd that this approach only works when the user has administrator rights. And of course, that is not what I want. My goal is that the user can install one relatively simple program that can be used right away.
After this I went looking for alternatives and found a lot about WinPcap and some of it's .NET wrappers (did I tell you I am programming c# .NET already?). But with WinPcap I found out that this must be installed on the user's pc and there is nog way to just reference some dll files and code away. I already looked at including WinPcap as a prerequisite in my installer but that is also to cumbersome.
Well, long story short. I want to know in my application what website my user is visiting at the moment it is happening. I think it must be done by looking at the data packets of the network but can't find a good solution for this. My application is build in C# .NET (4.0).
You could use Fiddler to monitor Internet traffic.
It is
a Web Debugging Proxy which logs all HTTP(S) traffic between your computer and the Internet. Fiddler allows you to inspect traffic, set breakpoints, and "fiddle" with incoming or outgoing data. Fiddler includes a powerful event-based scripting subsystem, and can be extended using any .NET language.
It's scriptable and can be readily used from .NET.
One simple idea: Instead of monitoring the traffic directly, what about installing a browser extension that sends you the current url of the page. Then you can check if that url is in your database and optionally show the user a message using the browser extension.
This is how extensions like Invisible Hand work... It scans the current page and sends relevant data back to the server for processing. If it finds anything, it uses the browser extension framework to communicate those results back to the user. (Using an alert, or a bar across the top of the window, etc.)
for a good start, wireshark will do what you want.
you can specify a filter to isolate and view http streams.
best part is wireshark is open source, and built opon another program api, winpcap which is open source.
I'm guessing this is what you want.
capture network data off the wire
view the tcp traffic of a computer, isolate and save(in part or in hole) http data.
store information about the http connections
number 1 there is easy, you can google for a winpcap tutorial, or just use some of their sample programs to capture the data.
I recomend you study up on the pcap file format, everything with winpcap uses this basic format and its structers.
now you have to learn how to take a tcp stream and turn it into a solid data stream without curoption, or disorginized parts. (sorry for the spelling)
again, a very good example can be found in the wireshark source code.
then with your data stream, you can simple read the http format, and html data, or what ever your dealing with.
Hope that helps
If the user is cooperating, you could have them set their browser(s) to use a proxy service you provide. This would intercept all web traffic, do whatever you want with it (look up in your database, notify the user, etc), and then pass it on to the original location. Run the proxy on the local system, or on a remote system if that fits your case better.
If the user is not cooperating, or you don't want to make them change their browser settings, you could use one of the packet sniffing solutions, such as fiddler.
A simple stright forward way is to change the comupter DNS to point to your application.
this will cause all DNS traffic to pass though your app which can be sniffed and then redirected to the real DNS server.
it will also save you the hussel of filtering out emule/torrent traffic as it normally work with pure IP address (which also might be a problem as it can be circumvented by using IP address to browse).
-How to change windows DNS Servers
-DNS resolver
Another simple way is to configure (programmaticly) the browsers proxy to pass through your server this will make your life easier but will be more obvious to users.
How to create a simple proxy in C#?