Use port range for multiple ports in firewall possible?

Hi,

Reading through the Kickstart docs I wonder if it is possible to do the
following. Udp port 5060 is the SIP signaling port and the 10000-10050
range are the rtp ports:

firewall --enabled --ssh --port=5060:udp --port=10000-10050:udp

So specify a port range for multiple consecutive ports instead of a
comma separated list. In this case a comma separated list would not be
very practical.

If it is not possible to do this how do you handle this? In %post?

Thanks and regards,
Patrick