pf - SCTP ports are not allowed in filter rules.

[Kurt Jaeger]

Hi!

> SCTP protocol header has src port and dst port fields. But pf doesn't
> supports.
> 
> # echo "pass  log (to pflog0) quick   proto SCTP from  any to any port
> 13873" | pfctl -f -
> stdin:1: port only applies to tcp/udp
> stdin:1: skipping rule due to errors
> stdin:1: rule expands to no valid combination
> pfctl: Syntax error in config file: pf rules not loaded
> #
> 
> I tried to write same rule with ipfw. It works.
> 
> # ipfw add 200 allow sctp from any to any 13873
> 00200 allow sctp from any to any 13873
> 
> Do I have a mistake or filtering for SCTP ports are not supported by pf ?
> Is it possible to fix ?

sys/netpfil/pf/ has some ifdefs that reference SCTP.

So, if you recompile your kernel with 

options	SCTP
options	SCTP_SUPPORT

it might improve, but the ifdefed code does not seem very far-reaching.
The user-space tooling (pfctl) does not seem to support sctp as keyword ?

-- 
pi at opsec.eu            +49 171 3101372                    Now what ?