[Winpcap-users] Filter in winpcap

[Ramon Szmuk]

Hi Alessandro,
regarding the filter to the internet you can just request that the
destination IP won't
be of an internal network assignment like:
192.168.0.0 /16
10.0.0.0 /8
172.16.0.0 /12

or in a filter:

not (net 192.168 or net 10 or net 172.16)

That is offcourse in case you are using private IP addresses only in your
LAN
to discard packets from two PC's of your LAN you have to manually filter
them out
I don't think there is any way to do that generically:

not (host 10.0.0.1 or host 10.0.0.2)

where 10.0.0.1 and 10.0.0.2 are the two PC's IP addresses

putting it all together:

not (net 192.168 or net 10 or net 172.16) and not (host 10.0.0.1 or host
10.0.0.2)

Have a nice day,
Ramon Szmuk


----- Original Message ----- 
From: "Alessandro" <bujia at libero.it>
To: "WinPCap MailingList" <winpcap-users at winpcap.org>
Sent: Friday, July 01, 2005 9:05 AM
Subject: [Winpcap-users] Filter in winpcap


> Hi!
>
> I have a question for you:
> I want to apply a filter to capture....and this filter is:
>
> - capture only packet that go to internet...outside...
> - discard packet from two PC of my LAN
>
> My problem is, I want this filter generic...in other words, I don't know
the
> address of the PC where it runs, and neither if its IP is in a net of
Class A,B
> or C, how could I make this?
>
> Thanks in advance.
>
> Alessandro
>
>
>
>
>
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