netfilter conntrack helper routine calling sequence

Hi,

when will the connection tracking helper ip_conntrack_helper_tftp.c
helper willbe called before SNAT or after SNAT.

c2b682a4: 17 192.168.0.1:32770 -> 10.145.6.78:69
rep tuple c2b682bc: 17 10.145.6.78:69 -> 10.145.2.23:32770
and skbuff contents as 10.145.2.23:32770 -> 10.145.6.78:69

My setup is

client router server
192.168.0.1 10.145.2.23(wan) 10.145.6.78


which i understand SNAT opteration has been done before it reaches
helper itself but what i expect is the tftp helper will be called when
the tftp packet before SNAT.

can any one explain where tftp helper will be called

muruga wrote:
> Hi,
>
> when will the connection tracking helper ip_conntrack_helper_tftp.c
> helper willbe called before SNAT or after SNAT.
>
> c2b682a4: 17 192.168.0.1:32770 -> 10.145.6.78:69
> rep tuple c2b682bc: 17 10.145.6.78:69 -> 10.145.2.23:32770
> and skbuff contents as 10.145.2.23:32770 -> 10.145.6.78:69
>
> My setup is
>
> client router server
> 192.168.0.1 10.145.2.23(wan) 10.145.6.78
>
>
> which i understand SNAT opteration has been done before it reaches
> helper itself but what i expect is the tftp helper will be called when
> the tftp packet before SNAT.
>
> can any one explain where tftp helper will be called
>

Please keep the title if the contents of the message are
kept the same.

This is Usenet, please do not expact a response in 9 minutes.

--

Tauno Voipio
tauno voipio (at) iki fi

PS: I responded to your first message.