DCCP and legacy firewalls.
DCCP and legacy firewalls.
Posted Sep 1, 2005 21:34 UTC (Thu) by psiren (guest, #29126)In reply to: DCCP and legacy firewalls. by Duncan
Parent article: Linux gets DCCP
I'm far from an expert, but having had a quick glance through the RFC, section 19 refers to the protocol number for DCCP being 33 (probably). UDP uses 17, so it will be seen as distinct and different from UDP. Take a quick glance at /etc/protocols to see how many there are (more than you probably realise, not that you use many of them day to day).
Many firewalls support protocols other than the common TCP, UDP and ICMP, so theres no specific reason to think you won't be able to pass the data through. However, there may not be direct support for checking anything inside the packets headers, as the software would need to understand the protocol to extract this information.