I have a route in a web server which needs to fetch a file from remote server and then process the content.
I want nginx to proxy this fetch action so that I can take the advantages of cache and performance.
At first I think I can use x-accel-redirect, but as I need to process the content, I think I cannot.
Second I think I can just create a proxy_pass route for this purpose, but I also need to restrict this route to be accessed only from my web server.
What is the best practice? Adding allow 127.0.0.1 in this route?
The internal directive will restrict the route in this manner, allow 127.0.0.1; deny all; will have the same effect.
If you are intending to process the content within Nginx eg with the subs filter module then dont forget to disable gzip for this location
Related
I am doing a poc on nginx server. It would listen to ports and redirect the path to different domains. The servers I am adding is dynamic in nature.
server config blocks looks like below
attatched image
I have to fetch server name|port address from an api and create servers based on it. The number of servers may increase or decrease it is dynamic in nature.
What I tried was creating new-config.conf which is already included into nginx.conf. I am writing server config dynamically into new-config.conf and restarting nginx after it.
I need something like where I don't require to restart nginx and embed server config into nginx.conf
I use Nginx to handle HTTP requests. During access log inspection, I found a lot of suspicious requests from the same IP address.
I'd like to configure Nginx to refuse connections from hosts like that one; I don't think that there will be a lot of hosts because it was the first one for years.
This is basically how the Nginx geo-ip module works, I've done a similar thing to whitelist Google crawlers on my sites.
In your http block define a geo directive and add the CIDR ip ranges you wish to block:
geo $badips {
default 0;
64.233.160.0/19 1;
66.102.0.0/20 1;
...
}
This will set the value of variable $badips to 1 for requests originating from those ip addresses.
Then in your server block, before any location blocks, add:
if ($badips) {
return 444;
}
Reload Nginx and that's it, requests which trigger $bdips to be set to 1 will be server a 444 response code (you can change it to another if you prefer).
If you want to keep the banned addresses in a different file then you can do that and inside the geo directive just add include path/to/file;. Syntax within the included file must be the same as above.
I am trying to configure NGINX as a forward proxy to replace Fiddler which we are using as a forward proxy. The feature of Fiddler that we use allows us to proxy ALL incoming request to a 8888 port. How do I do that with NGINX?
In all examples of NGINX as a reverse proxy I see proxy_pass always defined to a specific upstream/proxied server. How can I configure it so it goes to the requested server, regardless of the server in the same way I am using Fiddler as a forward proxy.
Example:
In my code:
WebProxy proxyObject = new WebProxy("http://mynginxproxyserver:8888/",true);
WebRequest req = WebRequest.Create("http://www.contoso.com");
req.Proxy = proxyObject;
In mynginxproxyserver/nginx.conf I do not want to delegate the proxying to another server (e.g. proxy_pass set to http://someotherproxyserver). Instead I want it to just be a proxy server, and redirect requests from my client (see above) to the request host. That's what Fiddler does when you enable it as a proxy: http://docs.telerik.com/fiddler/Configure-Fiddler/Tasks/UseFiddlerAsReverseProxy
Your code appears to be using a forward proxy (often just "proxy"), not reverse proxy and they operate quite differently. Reverse proxy is for server end and something client doesn't really see or think about. It's to retrieve content from the backend servers and hand to the client. Forward proxy is something the client sets up in order to connect to rest of the internet. In turn, the server may potentially know nothing about your forward proxy.
Nginx is originally designed to be a reverse proxy, and not a forward proxy. But it can still be used as a forward one. That's why you probably couldn't find much configuration for it.
This is more a theory answer as I've never done this myself, but a configuration like following should work.
server {
listen 8888;
location / {
resolver 8.8.8.8; # may or may not be necessary.
proxy_pass http://$http_host$uri$is_args$args;
}
}
This is just the important bits, you'll need to configure the rest.
The idea is that the proxy_pass will pass to a variable host rather than a predefined one. So if you request http://example.com/foo?bar, your http header will include host of example.com. This will make your proxy_pass retrieve data from http://example.com/foo?bar.
The document that you linked is using it as a reverse proxy. It would be equivalent to
proxy_pass http://localhost:80;
You can run into url encoding problems when using the $uri variable as suggested by Grumpy, since it is decoded automatically by nginx. I'd suggest you modify the proxy pass line to
proxy_pass http://$http_host$request_uri;
The variable $request_uri leaves the encoding in tact and also contains all query parameters.
I'm trying to set up a simple relay / mapping server locally and feel there has to be some off the shelf solution, but I can't seem to find it.
I'm debugging an application of mine that needs to connect to host_A. Instead of connecting to host_A I want to configure it to connect to local_proxy. I don't want to use proxying protocols, but instead want to configure it to connect to http://localhost:80 and then have local_proxy connect to host_A and have local_proxy simply relay all messages back and forth.
I would expect to have to configure local_proxy to tell it what server it is supposed to relaying
Then there is 1 particular endpoint I want to be able to intercept and change the return info so I can better debug my application.
I thought I should be able to do this with Charles Proxy, but I couldn't figure out how.
At the moment, this doesn't need to support SSL (though that would always be nice).
I think what you are trying to build here is known as a reverse-proxy. There is a variety of solutions available for that, but you may produce results fastest with nginx, which can not only be configured for reverse proxy duties but is also sporting some powerfull SSL capabilities. A minimal solution to your problem would look like this:
server {
listen 80;
# Adjust for expected hostname. Space-separated list of hostnames possible.
server_name host_a;
location / {
# Forward all incoming requests to host_a
proxy_pass http://host_a;
}
}
In nginx, we can set multiple domains to a single website like
server localhost abc.com def.com ghj.com
I want to keep 100s of domains that way.
The point is - we are auto generating websites. And we want to point all those domains to single website. Using the domain name/url, we want to send angular ajax requests which will fetch data related to that domain.
So, content will be dynamic.
Use a default server as a catch-all for any domain name that does not have an explicit server_name. For example:
server {
listen 80 default_server;
...
}
You do not need to specify a server_name directive for default servers.
See this document for details.