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From: "Calvin" <calvinproject@ihug.com.au>
To: netfilter-devel-request@lists.netfilter.org,
	netfilter@lists.netfilter.org
Subject: why packet get through the netfilter even if i drop all in FORWARD
Date: Sun, 8 Jun 2003 16:07:11 +1000	[thread overview]
Message-ID: <001e01c32d84$34f4fe70$95dc6f89@wonderland> (raw)

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Dear all,

I got a funny problem here and got no idea why it happen.
my simple network is
A
 |(eth0)
GWa
||(eth1)
||
||(eth1)
GWb
|(eth0)

I running netfilter with freeswan, I add a rule in FORWARD chain to drop all packets forward from
internal iface(eth0) to public iface(eth1).
    iptables - A FORWARD -i eth0 -i eth1 -j DROP

it works fine when , when i try to ping GWb's eth0 from machine A, it get blocked.

however once I start up the IPSEC, I do the ping again and A can ping GWb's eth0. The rule in FORWARD chain is still there.

Why does this happen? Is that anyway I can fix this?

Thanks very much
Calvin


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             reply	other threads:[~2003-06-08  6:07 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-06-08  6:07 Calvin [this message]
2003-06-08 12:43 ` why packet get through the netfilter even if i drop all in FORWARD Julian Gomez
  -- strict thread matches above, loose matches on Subject: below --
2003-06-08 23:21 George Vieira

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