Tyler Retzlaff wrote:
On 25/11/2005, at 5:45 PM, Georgi Alexandrov wrote:
Tyler Retzlaff wrote:
How does one query netfilter for information about conntrack
connections
when they are established, disestablished etc..?
Basically for connections established via conntrack_xxx modules I want
to extract the details and use them in an application on the
router. Is there
documentation to a C API for doing this?
Thanks
check /proc/net/ip_conntrack
but remember that accessing it directly ... with cat for example is
known that may crash your machine.
eww that doesn't sound very appealing.
I was kind of hoping for something more like callback registration
where if a
new session was established my userspace application was notified
allowing
me to query the details.
I've been reading as much as possible since the original post and
have only
found references to netfilter hooks which appears to be for
implementing things
like ip_conntrack. I suppose I could fork ip_conntrack and add a
callback
registration interface to it but I was hoping something already existed.
Thanks
Perhaps you may try the ULOG (userspace logging) target.
more @ iptables-tutorial.frozentux.net
