Red Hat Knowledgebase

Firewire is not supported under Red Hat Enterprise Linux 2.1, 3, or 4.

Limited firewire functionality is included in Red Hat Enterprise Linux 3 in the kernel-unsupported package. However, this was not included in Red Hat Enterprise Linux 4.

In the past, due to stability issues with the firewire (IEEE 1394) interface code, Red Hat has not included any support for this hardware in the Red Hat Enterprise Linux releases. There have, however, been significant improvements in the firewire code in the last several months, and Red Hat will be including a technology preview of a Firewire stack in RHEL5.1,  with the intent of it being fully supported in a subsequent minor release. 

For information on getting firewire functionality on your own, see http://www.linux1394.org/

Keep in mind that Red Hat cannot provide any support for problems relating to firewire setup or problems stemming from installing it on systems where it is unsupported.