Re: iptables NEW or SYN

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Thu, May 13, 2010 at 12:05 PM, Markus Feldmann
<feldmann_markus@xxxxxx> wrote:
> What are CTs?

Mebbe Conntrack?  The basic point that Jan's trying to make is that
NEW/ESTABLISHED/INVALID/RELATED describes packets as they're seen by
the connection tracking.  It is not necessarily related to whether a
TCP packet has the SYN flag set.

If a new and valid ICMP ping packet comes in, it's considered NEW by
conntrack because it's not associated with any other traffic, not is
it INVALID.  That's an example of NEW packets that don't have to be
TCP SYN.

--Mike
--
To unsubscribe from this list: send the line "unsubscribe netfilter" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html

[Index of Archives]     [Linux Netfilter Development]     [Linux Kernel Networking Development]     [Netem]     [Berkeley Packet Filter]     [Linux Kernel Development]     [Advanced Routing & Traffice Control]     [Bugtraq]

  Powered by Linux