I have a list of networks in our IX: http://noc.datahata.by/free.txt

Our customer networks are 31.130.200.0/21 and 178.172.181.0/24

I wrote a script that generates from IX networks list filter like this:

debian:~# ./parse | head
id=1 ip=31.130.xxx.xxx filter='dst net 31.24.88.0/21 and not dst net
31.130.200.0/21'
id=1 ip=31.130.xxx.xxx filter='dst net 31.24.88.0/21 and not dst net
178.172.181.0/24'
id=1 ip=31.130.xxx.xxx filter='dst net 31.130.200.0/21 and not dst net
31.130.200.0/21'
id=1 ip=31.130.xxx.xxx filter='dst net 31.130.200.0/21 and not dst net
178.172.181.0/24'
id=1 ip=31.130.xxx.xxx filter='dst net 46.28.96.0/21 and not dst net
31.130.200.0/21'
id=1 ip=31.130.xxx.xxx filter='dst net 46.28.96.0/21 and not dst net
178.172.181.0/24'
id=1 ip=31.130.xxx.xxx filter='dst net 46.53.128.0/17 and not dst net
31.130.200.0/21'
id=1 ip=31.130.xxx.xxx filter='dst net 46.53.128.0/17 and not dst net
178.172.181.0/24'
id=1 ip=31.130.xxx.xxx filter='dst net 46.56.0.0/16 and not dst net
31.130.200.0/21'
id=1 ip=31.130.xxx.xxx filter='dst net 46.56.0.0/16 and not dst net
178.172.181.0/24'

Is this correct?

On Wed, Sep 19, 2012 at 11:01 AM, Paolo Lucente <[email protected]> wrote:
> Hi Evgeniy,
>
> It might be better (more maintanable) to use a different approach
> for your task. Remove the aggregate_filter and go for pre-tagging:
>
> pre_tag_map: /path/to/pretag.map
> pre_tag_filter[bla]: 0
> refresh_maps: true
> pre_tag_map_entries: <say 1000? it's an upper bound anyway>
>
> It means filter in traffic tagged as 0 (no tag effectively). Then
> build /path/to/pretag.map as follows (with the idea what is being
> tagged with id == 1 within the map is then being discarded):
>
> id=1 ip=<NetFlow exporter IP address> filter='dst net <IX net, ie. 
> 192.168.0.0/16> and not dst net <local net, ie. 192.168.100.0/24>'
> id=1 ip=<NetFlow exporter IP address> filter='src net <IX net, ie. 
> 192.168.0.0/16> and not src net <local net, ie. 192.168.100.0/24>'
> ...
>
> You can indeed merge the two rules above in a single one, i did
> not do it just for readability. My current understanding of your
> goal is that you want to bill customer/customer traffic but not
> customer/IX and vice-versa.
>
> Cheers,
> Paolo
>
> On Wed, Sep 19, 2012 at 12:19:45AM +0300, Evgeniy Kozhuhovskiy wrote:
>> Thanks a lot, it works for now.
>>
>> Also i have another question, related to pcap filter.
>>
>> I have a list of networks in our IX. It has some big networks that
>> includes small networks
>> that are announced from our AS.
>> For example, we have 192.168.0.0/16 and 172.16.0.0/16 in IX,
>> but 192.168.100.0/24 and 172.16.100.0/24 are our clients networks.
>>
>> Of course, we need to bill traffic from/to our clients
>> (192.168.100/24, 172.16.100.0/24), but we dont need to bill
>> traffic to 192.168.0.0/16 and 172.16.0.0/16.
>>
>> I wrote such rule:
>> aggregate_filter[dsmgr]: (net not 192.168.0.0/16 and net not
>> 172.16.0.0/16) and (net 192.168.100/24 or net 172.16.100.0/24)
>>
>> but this filter returns no traffic at all (because it removes our
>> customers networks from result). Where I'm wrong in filter?
>>
>> On Tue, Sep 18, 2012 at 7:05 PM, Paolo Lucente <[email protected]> wrote:
>> >
>> > Hi Evgeniy,
>> >
>> > You are doing all good except aggregate_filter need to be bound to
>> > a specific plugin, can't be global. The daemon is surely spitting an
>> > error out about that. Please rewrite the two following lines and try
>> > again:
>> >
>> > plugins: print[bla]
>> > aggregate_filter[bla]: net not 178.120.0.0/13
>> >
>> > It should be that the daemon is logging errors somewhere, you might
>> > want to add a 'logfile' directive for catching errors, etc.
>> >
>> > Cheers,
>> > Paolo
>> >
>> > On Tue, Sep 18, 2012 at 04:38:47PM +0300, Evgeniy Kozhuhovskiy wrote:
>> > > Hello.
>> > >
>> > > We're using some proprietary software (dsmgr by ispsystems), that uses
>> > > nfacctd as it's part to calculate traffic usage (by netflow/sflow).
>> > >
>> > > By default dsmgr generate such nfacctd config:
>> > > daemonize: true
>> > > plugins: print
>> > > aggregate: src_host,dst_host
>> > > nfacctd_port: 9995
>> > > print_refresh_time: 900
>> > > print_output: csv
>> > > print_output_file: /var/flowstat/%Y:%m:%d-%H:%M
>> > >
>> > > and csv file is processed via proprietary utility runned from cron.
>> > >
>> > > We need to exclude some networks (in fact, our local IX) from billing.
>> > > I've added this line:
>> > > aggregate_filter: net not 178.120.0.0/13
>> > > to config. (178.120.0.0/13 is one of networks that we dont need to bill)
>> > >
>> > > But traffic from this network still goes to csv file:
>> > >
>> > > debian:/var/flowstat# cat 2012\:09\:18-16\:23 | grep 178.120 | head -4
>> > >
>> > > 0,0,unknown,00:00:00:00:00:00,00:00:00:00:00:00,0,0,0,0,0,0,,0,0,0,0,,,0,0,0:0:0,178.120.88.201,178.172.181.110,0,0,0,0,0,ip,0,1072,0,75723
>> > >
>> > > 0,0,unknown,00:00:00:00:00:00,00:00:00:00:00:00,0,0,0,0,0,0,,0,0,0,0,,,0,0,0:0:0,178.172.181.128,178.120.217.213,0,0,0,0,0,ip,0,22085,0,16089127
>> > >
>> > > 0,0,unknown,00:00:00:00:00:00,00:00:00:00:00:00,0,0,0,0,0,0,,0,0,0,0,,,0,0,0:0:0,178.172.181.95,178.120.60.190,0,0,0,0,0,ip,0,1695,0,159303
>> > >
>> > > 0,0,unknown,00:00:00:00:00:00,00:00:00:00:00:00,0,0,0,0,0,0,,0,0,0,0,,,0,0,0:0:0,178.120.112.234,178.172.181.64,0,0,0,0,0,ip,0,1326,0,120156
>> > >
>> > > Where i'm wrong?
>>
>>
>> --
>> With best regards, Evgeniy Kozhuhovskiy



-- 
With best regards, Evgeniy Kozhuhovskiy

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