Hi my ISP uses proxy authentication to log on to the internet so many of my apps won't work. Is there a way to tunnel all traffic so they're able to connect? Thanks in advance!
You could try a product like Proxifier, it will intercept your app's connections and pipe them through a tunneling http proxy, or SOCKS server.
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I made a proxy server in python 3. It listens on the port 4444. It basically receives the request from clients and sends it to the server. I want to use it as a firewall to my Dvwa server. So added another functionality to the proxy. What it does is, before sending the request to the DVWA server, it validates the input.
But the problem is, the clients have to configure their proxy settings in the browser to use my proxy server. Is there any way to access the proxy without configuring the browser settings. Basically I want to host the proxy server instead of the original web server. So that all the traffic goes through the proxy before going to the webserver.
Thanks in advance...
You don't say whether your Python3 proxy is hosted on the same machine as the DVWA.
Assuming it is, the solution is simple: a reverse-proxy configuration. Your proxy transparently accepts and forwards requests to your server who then processes them and sends them back via the proxy to the client.
Have your proxy listen on port 80
Have the DVWA listen on a port other than 80 so it's not clashing (e.g. 8080)
Your proxy, which is now receiving requests for the IP/hostname which would otherwise go to the DVWA, then forwards them as usual.
The client/web browser is none the wiser that anything has changed. No settings need changing.
That's the best case scenario, given the information provided in your question. Unfortunately, I can't give any alternative solutions without knowing the network layout, where the machines reside, and the intent of the project. Some things to consider:
do you have a proper separation of concerns for this middleware you're building?
what is the purpose of the proxy?
is it for debugging/observing traffic?
are you actually trying to build a Web Application Firewall?
HTTP proxy with SSL and DNS support.
I must be lacking some key concepts about proxy-ing because I cannot grasp this. I am looking to run a simply http or https proxy without interfering with SSL. Simply, a fully transparent proxy that can passthrough all the traffic to the browser connected via HTTP or HTTPS proxy without modifying or intercepting any packets. Not able to find any code online or I'm not using the right keywords.
EX. On the browser adding server.someVPN.com:80 on the HTTP proxy field and as soon as you try to visit a website, it prompts for authentication. Then it works perfectly with any domain, any security, any ssl, no further steps needed. Most VPN providers have this.
How's this possible? it even resolves DNS itself. I thought on transparent proxy the dns relies on the client. Preferably looking for a nodeJS solution but any lang works.
Please don't propose any solutions such as SOCKS5 or sock forwarding or DNS overriding or CA based MITM. According to HTTP 1.1 which supports 'CONNECT' this should be easy.
Not looking to proxy specific domains, looking for an all inclusive solution just like most VPN Providers providers.
----Found the answer too quickly, feel free to delete this post/question admins.
The way it works is that the browser knows it is talking to a proxy server, so for example if the browser want to connect to htttp://www.example.com it sends a CONNECT www.example.com:443 HTTP/1.1 to the proxy server, the proxy server resolves wwww.example.com via DNS and then opens a TCP connection to wwww.example.com port 443 and proxies the TCP stream transparently to the client.
I don't know any solution for nodejs. Common proxy servers include Squid, Privoxy and Apache Traffic Server
See also: https://developer.mozilla.org/en-US/docs/Web/HTTP/Methods/CONNECT
Found the solution right after I asked...
This module works perfectly https://github.com/mpangrazzi/harrier
Does exactly what I was asking for.
I have set the decrypt HTTPS option in the Fiddler2 and so it shows the timeline for HTTPS requests.
But not able to see timeline of HTTP connect tunnel requests. Any way to enable this.
There's not much of a "timeline" to show for a CONNECT tunnel itself. Are you looking to see the timings of the HTTPS requests inside the tunnel? If so, enable HTTPS Decryption in Fiddler's options, and select the HTTPS requests rather than the tunnel itself.
I have Charles Proxy set up to look at outgoing https requests, and I need to re-route traffic from one server to a local http server.
I have a MacOSX machine that is set up this way: I have an ethernet connection that I hardwire, and share the internet connection via the airport interface. On a second machine, I've installed the Charles cert, and when I connect via the shared interface. I can see the traffic (unencrypted) in Charles, so I know the communications and certs are all working properly.
I need to intercept all the https traffic going to one server (https://www.foo.com) to a local http server (localhost:8001). I've tried using Map Remote, but it doesn't seem to unencrypt the traffic before forwarding it (or possibly it re-encrypts it).
How can I configure Charles to do this? (or, please point me to any other software package, if Charles isn't capable of this)
I figured out what was happening, there were two issues.
I had misconfigured the Map Remote entry, and my two different clients (MyApp and curl) were hitting two different servers - the app was hitting the correct server (locally) but the request was malformed.
Curl from the macOSX box where the proxy was running was NOT looping through the proxy, since I hadn't included the -x localhost:8888 flag.
My websocket server listens on port 8080 with no proxy.
Most of the time I'm getting requests with the Upgrade Websocket header and it works fine.
Sometimes I'm getting HTTP CONNECT requests.
Is this a valid request?
Does it means that there is a proxy server between the client and the server?
How my server is suppose to respond to the CONNECT request?
Thanks
You are getting CONNECT requests because you are likely to have configured your browser to use a proxy. If you directed your browser to use port 8080 on your local IP address, it will assume there is a proxy and that means when you ask for a secure connection, the browser leads with CONNECT.
You will need to add support for SSL/TLS tunnelling to your server to deal with this.