nginx reverse proxy

Is there any possible way to do that with nginx  ?

We are forwarding all 80/443 port traffic to nginx proxy server
We want to let it detect the real ip of the server and forward the traffic to the real ip without writing a config for each domain ?
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I'm not sure I understand your question.

It seems, that you try to implement a forward proxy and not a reverse proxy.

What do you mean exactly with:
"We are forwarding all 80/443 port traffic to nginx proxy server"
Is this a browser configuration, an iptables rule, something else?
Who is forwarding?

Up to my knowledge nginx is not intented to be used as a forward proxy.
You could use squid or privoxy

Here an old article (perhaps obsolete though) from 2009:,15124,15256#msg-15256
FireBallITAuthor Commented:
our router.
We want to let the nginx find the real ip and resend the traffic to there
OK, so your router will redirect all http/https packets to nginx's address instead of sending it to the correct address you'd like to use nginx to act as reverse proxy and find the IP addresses automatically.

I don't know how to do this, but could imagine that there might be a trick for HTTP, which I don't know.
I'd be very suprised whether this would be possible for HTTPS.
Normally it's nginx who handles https and SNI detection. this means nginx would need the certificates and would decrypt all traffic.

Though I never had time to look at it personally I think that haproxy ( ) might be a better match for what you try to achieve.

However not sure if it can do what you want.

Could  an alternative approach be to autogenerate the nginx config?

What is the motivation for this setup? Perhaps this might help to find alternative solutions.
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FireBallITAuthor Commented:
our aim is not about the handle 443  / https , we just want to let it catch and act like a reverse proxy without checking the names
To summarize:

I don't know how to autoforward HTTP traffic with a nginx with a wild card configuration.
Either there's a trick I don't know or you had to explicitely create a configuration for each potential http server.

If you know the server names up-front, then you could auto-generate this configuration periodically.

For HTTPS on the other hand I'm rather sure, that you will not be successful with nginx.
nginx can up to my knowledge NOT forward HTTPS traffic without decrypting it. haproxy on the other hand is supposed to be able to do this (though I never tried it)
but even for haproxy I can't say, whether this would work with an automatic wildcard connfiguration.

nginx and haproxy should have a lua scripting module. perhaps this would allow for parts of this dynamic functionality.
My knowledge ends about there.
Perhaps somebody else knows more (can confirm or 'unconfirm') my assumtions?

If you find out any way to get this (or parts of this) working, then I'd be very interested, though I don't have an immideate appliction for this use case.

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FireBallITAuthor Commented:
Thank you
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