Re: IP MASQUERADING broken again from v1.3.81 onwards

Robert Riggs (
Fri, 05 Apr 1996 12:59:50 -0700 (MST)

On 05-Apr-96 Jos Vos wrote:
>>> But all the kernel versions 1.3.8[1-4] seem to have broken the
>> masquerading code. I can open certain connections like telnet, http etc,
>> but while ftp the data connections do not seem to be getting established.
>> I can watch the connections with
>> ipfwadm -M -l -n
>> which lists the ports and I have never seen port 20 anytime in these
>> kernel versions.
>> Has this something got to do with the recent reorganization of the
>> masquerading code ? It looks so, because if I disable masquerading, IP
>> forwarding as such is working cleanly.
>The protocol-dependent masquerading code, supporting ftp and irc,
>respectively, is now compiled as two separate modules. You have
>to load the ftp module to use the ftp-specific code. I didn't try
>it (yet), but that's what I read in the accompanying documentation
>(being the Makefile and the C sources :-)).

Are these modules loaded when needed by kerneld, or do I need
to load these manually?