Messages in this thread | | | Date | Wed, 20 Dec 2000 13:08:07 -0500 | From | "Michael H. Warfield" <> | Subject | Re: iptables: "stateful inspection?" |
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On Wed, Dec 20, 2000 at 12:52:27PM -0500, Michael Rothwell wrote: > "Michael H. Warfield" wrote:
> > You can use spf to add some stateful inspection for PORT mode > > ftp. Personally, I like the masquerading option better, though.
> Can you give an example of using MASQ selectively? I have real addresses > on both sides of the firewall, but want things like FTP to work > correctly. I think the IPChains HOWTOs are just a little terse. :)
modprobe ip_masq_ftp ipchains -A forward -p tcp -s {Source Addresses} -d 0/0 21
Seems to work for me (mine includes a "tag" and a policy route rule to send it out my cable modem that I've left off here)...
If you don't load the ip_masq_ftp module, you WILL get illegal port errors on the PORT commands.
> Thanks!
Mike -- Michael H. Warfield | (770) 985-6132 | mhw@WittsEnd.com (The Mad Wizard) | (678) 463-0932 | http://www.wittsend.com/mhw/ NIC whois: MHW9 | An optimist believes we live in the best of all PGP Key: 0xDF1DD471 | possible worlds. A pessimist is sure of it!
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