i want to configure stud for SSL
and haproxy for load balancing.
As per my understanding haproxy is not able to handle HTTPS request.
The newest haproxy Version 1.5 is actually able to handle HTTPS request itself. See how-to-get-ssl-with-haproxy blog entry.
Configuring stud with haproxy is not hard.
The important part is configuring stud with the write-proxy option and using a relative recent version of haproxy.
I have written a blog post regarding this (german).
Here is a translated version using google translate.
Related
We have requirement where we have to access some external APIs that are exposed to HTTP/2 (only) from our microservices (EKS kubernetes cluster, Perl based) through SQUID Proxy.
It seems, SQUID proxy doesn't support HTTP/2 so we are trying to get some alternative solution like:
Different proxy to support HTTP/2 outbound call
Or convert HTTP1.1 to HTTP/2
Could someone suggest the best alternative as per their experience on this and let me know the proxy information which will work in this scenario?
Many Thanks in advance.
I have a Vapor 4 app which is successfully serving HTTPS requests with no issues.
I would like it to also respond to HTTP requests on a custom port number, which will be for providing some back-end control and monitoring hooks that are called by other services on the same server, and won't be publicly reachable.
When I search Google and browse the Vapor docs for how to do this, I only get results for a very old version of Vapor, using a configuration file to specify HTTP/HTTPS server and port configurations.
Does anyone know if this type of configuration be done on Vapor 4?
Cheers and thanks in advance!
No Vapor 4 cannot serve different protocols on the same port/application. The easiest way around is to run two instances of the application, one for each. Or just get the internal traffic to use HTTPS.
Another option would be to stick Nginx in front or similar
I need to integrate several web applications on-premise and off-site under a common internally hosted URL. The on-premise applications are in the same data center as the haproxy, but the off-site applications can only be reached via a http proxy because the server on which haproxy is running has no direct Internet access. Therefore I have to use a http Internet proxy, SOCKS might be an option too.
How can I tell haproxy that a backend can only be reached via proxy ?
I would rather not use an additional component like socksify / proxifier / proxychains / tsocks / ... because this introduces additional overhead.
This picture shows the components involved in the setup:
When I run this on a machine with direct Internet connection I can use this config and it works just fine:
frontend main
bind *:8000
acl is_extweb1 path_beg -i /policies
acl is_extweb2 path_beg -i /produkte
use_backend externalweb1 if is_extweb1
use_backend externalweb2 if is_extweb2
backend externalweb1
server static www.google.com:80 check
backend externalweb2
server static www.gmx.net:80 check
(Obviously these are not the URLs I am talking to, this is just an example)
Haproxy is able to check the external applications and routes traffic to them:
In the safe environment of the company I work at I have to use a proxy and haproxy is unable to connect to the external applications.
How can I enable haproxy to use those external web application servers behind a http proxy (no authentication needed) while providing access to them through a common http page / via browser ?
How about to use delegate ( http://delegate.org/documents/ ) for this, just as an idea.
haproxy -> delegate -f -vv -P127.0.0.1:8081 PROXY=<your-proxy>
http://delegate9.org/delegate/Manual.shtml?PROXY
I know it's not that elegant but it could work.
I have tested this setup with a local squid and this curl call
echo 'GET http://www.php.net/' |curl -v telnet://127.0.0.1:8081
The curl call simluates the haproxy tcp call.
I was intrigued to make it work but i really could not find anything in the haproxy documentation, so i googled a bit and found that nginx might do the trick, but it didn't for me, after a bit more of googleing i ended up finding a configuration for apache that works.
here is the important part:
Listen 80
SSLProxyEngine on
ProxyPass /example/ https://www.example.com/
ProxyPassReverse /example/ https://www.example.com/
ProxyRemote https://www.example.com/ http://corporateproxy:port
ProxyPass /google/ https://www.google.com/
ProxyPassReverse /google/ https://www.google.com/
ProxyRemote https://www.google.com/ http://corporateproxy:port
i'm quite sure there should be a way to translate this configuration to nginx and even to haproxy... if i manage to find the time i will update the answer with my findings.
for apache to work you should also enable a few modules, i put up a github repository with a basic docker configuration that showcases feel free to have a look at that to see the full working configuration.
I'm using Eclipse to develop an app that consists of an Angular 2 front end and a Java REST back end.
For the front end, I'm using the Angular CLI plugin, which starts the app by issuing an ng serve command to the CLI. This command sets up an http server on port 4200.
For the back end, I'm using an in-company framework that launches in Jetty within Eclipse in port 8088.
While both these ports are configurable, by nature of the frameworks and plugins in use, they'll always be distinct.
Authentication works via an OAuth2 service that is also deployed to port 8088, as part of the framework. This service sets a cookie which certifies the browser session as authenticated. I have verified that this service works correctly by testing it against a Swagger instance of the REST API (also running in 8088 as part of the same framework).
The problem is that when the browser is aimed at the Angular 2 app on :4200, its internal REST API requests to :8088 aren't carrying the authentication cookie. Presumably, this is because of cross-site protection.
Is there any way for the app or the framework to tell the browser that these two "sites" are actually part of the same system?
Alternatively, if I have to configure the dev browser (Chrome) to work, I can live with that too. However, I've tried the --disable-web-security --user-data-dir recommendation, but the cookie still doesn't show up on the requests.
Lastly, I have Apache installed on the dev machine. If I can set up appropriate vhosts and use it as a proxy so that the browser thinks it's all the same, that would probably work too. It would just be a matter of intercepting all /swagger and /api requests and sending them to :8088, and all forwarding all other requests to :4200. However, I've been banging my head against mod_rewrite and mod_proxy and haven't been able to come up with anything that works.
I think what you're looking for is
withCredentials = true
https://developer.mozilla.org/en-US/docs/Web/API/XMLHttpRequest/withCredentials
I have a working setup using a hardware load balancer that controls redirection in such a fashion that all requests to http://example.com/login/* are redirected (using HTTP 302) to https://example.com/login/* and all requests that are NOT for /login are inversely redirected from HTTPS to HTTP.
This allows me to wrap the login functions and user/password exchange in SSL but otherwise avoid slowing connections with encryption and also solving some problems with embedded content mixed content warnings in some browsers.
The load balance, however, is end of life and I am looking for a replacement solution, preferably in software.
I think HAproxy is going to be able to serve as my load balacing solution, but I have only been able to find configuration examples and documentation for redirecting everything from HTTP to HTTPS, or vice versa.
Is it possible to do what I am proposing using HAproxy or should I look for a different solution?
I realize I will need to use the development version of HAproxy to support SSL at all.
I would suggest you do not use a DEV build for your production environment.
To answer your question, I would assume you're going to use HAProxy version 1.4:
Is it possible to do what I am proposing using HAProxy or should I look for a different solution?
Yes. It is possible but you have to use another software to handle the HTTPS traffic. Stunnel is proven to be good in this. So I'd say the setup is going to be:
HAProxy 1.4
# Redirect http://../login to https://../login
frontend HTTPSRedirect
bind 1.2.3.4:80
default_backend AppServers
redirect prefix https://www.domain.com/login if { path_beg -i /login }
# Handler for requests coming from Stunnel4.
frontend HTTPReceiver
bind 5.6.7.8:80
default_backend AppServers
Stunnel4
[https]
accept=443
connect=5.6.7.8:80 (HAProxy IP)