[ovs-discuss] arp spoofing

[faicker mo]

On 2012-5-20, at 上午12:27, Sergio Kviato wrote:

> 
> 
> Sent from my iPhone
> 
> On May 19, 2012, at 19:02, faicker mo <faicker.mo at gmail.com> wrote:
> 
>> 
>> On 2012-5-19, at 下午11:11, Ben Pfaff wrote:
>> 
>>> On Sat, May 19, 2012 at 09:30:40PM +0800, faicker mo wrote:
>>>> I have viewed the ovs-ofctl man page, I found that the arp match has
>>>> only arp_sha and arp_dha. It can't match the source ip in arp(SPA) and
>>>> destination ip(DPA) in arp. Without this, the arp spoofing can't be
>>>> prevented.
>>> 
>>> Use nw_src or nw_dst.  This is documented in ovs-ofctl(8).
>> 
>> Sorry for my overlook. 
>> 
>>> 
>>>>   OVS replaces the bridge default in kernel. Ebtables can't
>>>>   work. But now OVS doesn't have enough function to replace
>>>>   eatables. For example, arp_reply module in eatables.
>>> 
>>> No, OVS doesn't replace anything, it provides a supplement.
>> 
>> But when I use OVS,  I can't use eatables.(need bridge module)
> 
> Why you need ebtables. You can construct rules to block ARP and IP spoofing using ovs-ofctl for example. 
> 
>>> 
>>>>   I have successfully realized the broute which is in eatables by OVS.
>>> 
>>> I don't understand that sentence.
>> 
>> For this, OVS replaces ebtables 

I need the arp_reply module like in eatables.   
ARP and IP spoofing are realized already by ovs-ofctl.