httpd.conf vhost looks like this:
<VirtualHost *:9999>
ServerAdmin admin@example.com
ServerName www.example.com
ServerAlias example.com
# Indexes + Directory Root.
DirectoryIndex index.php
DocumentRoot /var/www/html/example.com/wordpress
ProxyRequests Off
<Proxy *>
Order deny,allow
Allow from all
</Proxy>
ProxyPass / http://localhost:8888/
ProxyPassReverse / http://www.example.com:9999/
#ProxyPassReverseCookieDomain localhost:8888 www.example.com:9999/
ProxyPassReverseCookiePath / /
</VirtualHost>
<VirtualHost *:80>
ServerAdmin admin@example.com
ServerName www.example.com
ServerAlias example.com
# Indexes + Directory Root.
DirectoryIndex index.php
DocumentRoot /var/www/html/example.com/wordpress
</VirtualHost>
the computer (192.168.1.5) running apache itself is trying to serve wordpress from the standard example.com and proxy a localhost app on port 9999 (example.com:9999) to the internet. the wordpress site works from 192.168.1.5 from anywhere on the network, but the localhost app proxy on 192.168.1.5:9999 works on 192.168.1.5 itself but not on other computers within the network. i think if 192.168.1.5:9999 worked over the network, it would also work on the internet as a whole (port forwarding is alreadyconfigured over the router), but I can't see why it would only work on the originating server and not its peers.