Re: url filtering with netfiler

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On Fri, Aug 3, 2018 at 11:03 AM, Oleg <lego12239@xxxxxxxxx> wrote:
> On Fri, Aug 03, 2018 at 01:21:05AM +0430, Saber Rezvani wrote:
>> On 08/03/2018 12:14 AM, Oleg wrote:
>> > On Thu, Aug 02, 2018 at 06:44:26PM +0430, Saber Rezvani wrote:
>> >> Dear all,
>> >>
>> >>
>> >> Some of my friends and I have decided to work on Linux community, and
>> >> add a new feature to the networking subsystem. We have concluded that
>> >> URL filtering with IP/NF tables may be a good feature if we can
>> >> implement it in Linux networking subsystem. Because through our research
>> >> we found out with the current IP/NF tables since that payload is spread
>> >> through several packets, it is not possible.

Hi!

I believe that this is a very feasible feature, at least for header
filtering. In fact, iptables has already a string match that could be
used for this purpose.
Hopefully, this ability will be available for nft soon.

>> > Do you think this feature will be useful now? For example, filtering uri in
>> > https isn't possible and http using is decreasing now.

There are some components in the kernel to decrypt HTTPS, so
software-based ssl offload in the kernel is coming.
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