Hi Experts,
I am searching a way how to filter GTP packets and hence mobile IP data over
GTP-U. I can do that by applying index based filter for BPF. But can when I
see struct bpf_insn structure I think, if I modify the gencode.c/h and
grammer.y to extend the GTP based filter it can work.
But
>
> I am searching a way how to filter GTP packets and hence mobile IP data over
> GTP-U.
I've wanted to do this as well, to filter on APN, IMSI or MSISDN.
Is it not possible to do with the current tcpdump?
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[mailto:tcpdump-workers-ow...@lists.tcpdump.org] On Behalf Of Dánial
Sent: Friday, August 20, 2010 5:39 PM
To: tcpdump-workers@lists.tcpdump.org
Subject: Re: [tcpdump-workers] BPF syntax extension for GTP-U (mobile ip
packet)
>
> I am searching a way how to filter
On Aug 17, 2010, at 2:21 AM, Ambika Prasad Tripathy wrote:
> I am searching a way how to filter GTP packets and hence mobile IP data over
> GTP-U. I can do that by applying index based filter for BPF. But can when I
> see struct bpf_insn structure I think, if I modify the gencode.c/h and
> gramme
On Aug 22, 2010, at 10:15 PM, Ambika Prasad Tripathy wrote:
> But my proposal is to include a filter like VLAN for GTP.
Exactly. See my response to your earlier message, except that:
> So after support it the above filter will work like
>
> "Gtp 23456345" to filter all GTP packets with TEID
