Messages in this thread |  | | Date | Thu, 24 May 2001 21:49:06 +0200 | From | Andi Kleen <> | Subject | Re: Selectively refusing TCP connections |
| |
On Thu, May 24, 2001 at 12:15:44PM -0700, David Ford wrote: > Is there an example somewhere of this?
I don't have one handy, but basically you have to hack libpcap a bit to push the generated filters using SO_ATTACH_FILTER onto a socket.
The format (LPF) understood by the kernel is a superset of the BPF stack machine code generated by libpcap. See linux/filter.h and the BPF documentation.
It's main drawback is that it doesn't support variable length headers properly.
-Andi - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
|  |