apache - ProxyPass Failing -

apache - ProxyPass Failing -

i have new rasperrypi webserver running raspbian i'm trying utilize proxy web-enabled device fieldserver tech (fieldserver.com) on our intranet. within /etc/apache2/sites-available/default i've added next line:

<location /modbus/> proxypass http://192.168.10.124/ </location>

after restarting webserver when seek browse defined proxy address

http://192.168.10.7/modbus/

i password prompt fieldserver device after authenticating error indicating initial page cannot loaded:

not found requested url /app/profiles/profiles.htm not found on server. apache/2.2.22 (debian) server @ 192.168.10.7 port 80

is there way can address problem apache conf or problem fieldserver device?

more scheme info:

$ cat /etc/os-release* pretty_name="raspbian gnu/linux 7 (wheezy)" name="raspbian gnu/linux" version_id="7" version="7 (wheezy)" id=raspbian $ dpkg-query -l | grep apache ii apache2 2.2.22-13+deb7u3

i believe need add together proxypassreverse directive apache configuration:

<location /modbus/> proxypass http://192.168.10.124/ proxypassreverse http://192.168.10.124/ </location>

this answer has pretty concise explanation on proxypassreverse does, if you're curious.

apache proxy mod-proxy raspbian