iipsrv service is configured by default on port 9002.
You can configure IP and port the service is listening on
in the /etc/iipsrv/iipsrv.conf file.

If you want to use it with apache 2.4 and mod proxy on the same host,
you'll have to:
- enable port in selinux:
# semanage port -a -t http_port_t -p tcp 9002

- configure somewhere in your apache config the ProxyPass directive:
ProxyPass /iip/ fcgi://127.0.0.1:9002/
ProxypassReverse /iip/ fcgi://127.0.0.1:9002/