Re: Absolute ack and seq number of tcp packet

Jon Siwek <[email protected]> Mon, 2 Dec 2019 10:26:56 -0800
Newsgroups gmane.comp.security.detection.bro
Message-ID <CAMzgZ0JjQi1_CmWU3+yQwMZCo=8mRNhfqhz2TbDA2NQJQzJ4tw@mail.gmail.com>
On Thu, Nov 28, 2019 at 11:38 AM Hui Lin (Hugo) <[email protected]> wrote:

> In the tcp_packet event, how can I obtain the absolute values (found in the tcp header), not the relative values of ack and seq numbers.

The `get_current_packet_header()` BIF likely works for you:

https://docs.zeek.org/en/stable/scripts/base/bif/zeek.bif.zeek.html#id-get_current_packet_header

Or else the `raw_packet` event is also something that uses the
`raw_pkt_hdr` type which should have the absolute sequence numbers.

- Jon
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