Configure Apache to use external proxy for internet connection

Question

In my application I am using following rewrite rule:

RewriteRule ^/ajax(.*) http://api.externalserver.com/$1 [P,QSA,L]

Now the problem is that my corporate network requires me to use HTTP proxy for external internet connections.

To ilustrate, this doesn't work:

curl -v http://api.externalserver.com/login

But this works:

curl -v -x 11.22.11.22:8585 http://api.externalserver.com/login

How can I make Apache use the corporate proxy for external internet requests?

Answer 1

I think you'll want to enable mod_proxy_http, and set:

ProxyRemote * http://11.22.11.22:8585

somewhere in your virtualhost configuration.

Answer 2

You may install SQUID proxy in transparent mode to proxy all traffic going from local machine to the internet.

For this first add iptables rule

iptables -t nat -A OUTPUT -p tcp --dport 5555 -j DNAT --to 127.0.0.1:3128

this will redirect all outgoing http connections to local squid. Then configure squid according to this guide and additionaly configure

cache_peer 11.22.11.22 parent 8585 0 no-query default
never_direct allow all

That's all. All your outgoing traffic to port 80 will go through your organisation proxy

Answer 3

Did you try http tunneling, via proxytunnel or corkscrew ?

You need to configure a vhost for your Apache and use it as a distant proxy.

Maybe adapting this could help you : http://dag.wieers.com/howto/ssh-http-tunneling/

Answer 4

I think what you are looking for is mod_proxy, and mod_proxy_http specifically:

http://httpd.apache.org/docs/2.2/mod/mod_proxy_http.html

Answer 5

After setting ProxyRemote and restarted httpd, if you got the "[error] (13)Permission denied: proxy: HTTP: attempt to connect to failed", then you also need to execute the following:

setsebool -P httpd_can_network_connect=1