CentOS 6.2 lighttpd reverse proxy server and Selinux

Situation
Setting up lighttpd as a reverse proxy in front of a java web server.

System
CentOS 6.2 x64 running as a virtual guest

Errors
Error in /var/log/lighttpd/error.log

server started
connect failed: 8 Permission denied 13
proxy-server disabled: 127.0.0.1 9000 8

Error in /var/log/audit/audit.log (selinux)

type=AVC msg=audit(1334211267.437:7950): avc:  denied  { name_connect } for  pid=21529 comm="lighttpd" dest=9000 scontext=unconfined_u:system_r:httpd_t:s0 tcontext=system_u:object_r:port_t:s0 tclass=tcp_socket

type=SYSCALL msg=audit(1334211267.437:7950): arch=c000003e syscall=42 success=no exit=-13 a0=9 a1=7fff20ab9060 a2=10 a3=1999999999999999 items=0 ppid=1 pid=21529 auid=500 uid=498 gid=498 euid=498 suid=498 fsuid=498 egid=498 sgid=498 fsgid=498 tty=(none) ses=19 comm="lighttpd" exe="/usr/sbin/lighttpd" subj=unconfined_u:system_r:httpd_t:s0 key=(null)

Error shown in web browser

500 - Internal Server Error

Diagnosis
run "semanage port -l | grep http_port_t"
It should show the allowed ports for the web servers.

Solution

semanage port -a -t http_port_t -p tcp 9000
(or whichever port the internal web server is supposed to run on, that is not in the list above)