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Date:      Tue, 25 Jan 2000 21:23:23 -0800 (PST)
From:      Kris Kennaway <kris@hub.freebsd.org>
To:        keramida@ceid.upatras.gr
Cc:        current@FreeBSD.ORG
Subject:   Re: ipfilter and ipfstat
Message-ID:  <Pine.BSF.4.21.0001252121590.55762-100000@hub.freebsd.org>
In-Reply-To: <20000125051418.A62880@charon.hell.gr>

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On Tue, 25 Jan 2000, the Webslave wrote:

> > Okay, so I finally decided to take the plunge and check out ipfilter. ipf
> > seemed to load my ruleset with no problems, but ipfstat dies with:
> > 
> > ioctl(SIOCGETFS): Invalid argument
> 
> And what would that ruleset be?
> 

# Default to deny
block in log on tun0 from any to any

# Block unroutables
block in quick on tun0 from 192.168.0.0/16 to any
block in quick on tun0 from 172.16.0.0/12 to any
block in quick on tun0 from 10.0.0.0/8 to any
block in quick on tun0 from 127.0.0.0/8 to any
 
# Allow us to initiate any outgoing connections
pass out quick on tun0 proto tcp/udp from any to any keep state
pass out quick on tun0 proto icmp from any to any keep state

# Allow incoming trojans
pass in quick on tun0 proto tcp from any to any port = 12345 flags S keep state keep frags
pass in quick on tun0 proto udp from any to any port = 31337 keep state

# Allow loopback
pass out quick on lo0
pass in  quick on lo0

Note that I haven't been able to test this ruleset for legitimacy yet
because I can't interface with ipfstat :-)

Kris

----
"How many roads must a man walk down, before you call him a man?"
"Eight!"
"That was a rhetorical question!"
"Oh..then, seven!" -- Homer Simpson



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