Hello all,

I'm trying to not have Netbios calls go through my IP Masquerading 
server, but am getting an error with the command I'm trying, and the man 
page didn't help me much.

The command Im trying is:

  ipfwadm -F -a deny -S 192.168.2.0/24 137 -D 0.0.0.0/0   

and the error I get is:

  ipfwadm: no ports allowed without specific protocol
  Try `ipfwadm -h' for more information.

Am I specifying the port incorrectly? I also tried 137:139.

Thanks fior any help.

-Bob



Other info:

- from using 'ipfwadm -M -l -n"
IP masquerading entries
prot expire   source               destination          ports
udp  04:39.18 192.168.2.15         xxx.xxx.xxx.xxx         137 (62150) -> 
53

- from /etc/services
netbios-ns      137/tcp         nbns
netbios-ns      137/udp         nbns
netbios-dgm     138/tcp         nbdgm
netbios-dgm     138/udp         nbdgm
netbios-ssn     139/tcp         nbssn


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