From: Tomasz Chmielewski <mangoo@wpkg.org>
To: Jonathan Tripathy <jonnyt@abpni.co.uk>
Cc: netfilter@vger.kernel.org
Subject: Re: ebtables and anti-spoofing rules not working 100%?
Date: Sun, 29 Aug 2010 19:34:04 +0200 [thread overview]
Message-ID: <4C7A9A0C.50203@wpkg.org> (raw)
In-Reply-To: <4C7A9825.9080602@abpni.co.uk>
On 29.08.2010 19:25, Jonathan Tripathy wrote:
>> Also, if I do this on the "rogue" guest (with MAC, IP belonging to the
>> "other" guest):
>>
>> ifconfig eth0 hw ether AA:BB:CC:DD:EE:FF
>> ifconfig eth0 1.2.3.22
>>
>>
>> any communication to the "other" still breaks (from external hosts).
>> So, no improvement.
>>
>>
> Why do you need to use the INPUT chain with ebtables in a VM
> environment? In my ebtables setup, I have INPUT to drop everything,
> except stuff from/to the loopback interface (lo)
I can use anything, as long as it "pins" given MAC/IP addresses to a VM
guest - and that any "rogue" guest is not able to disrupt traffic to
other VM guests (or, worse, the gateway) - i.e. by changing its own
IP/MAC to something else, possibly addresses used by other guests / gateway.
--
Tomasz Chmielewski
http://wpkg.org
next prev parent reply other threads:[~2010-08-29 17:34 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-08-29 13:59 ebtables and anti-spoofing rules not working 100%? Tomasz Chmielewski
2010-08-29 15:28 ` Pascal Hambourg
2010-08-29 16:46 ` Tomasz Chmielewski
2010-08-29 17:25 ` Jonathan Tripathy
2010-08-29 17:34 ` Tomasz Chmielewski [this message]
2010-08-29 18:23 ` Jonathan Tripathy
2010-08-29 18:36 ` Tomasz Chmielewski
2010-08-30 18:14 ` Pascal Hambourg
2010-08-30 18:38 ` Tomasz Chmielewski
2010-08-30 21:34 ` Pascal Hambourg
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