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Date:	Fri, 28 Sep 2012 00:25:01 +0200
From:	richard -rw- weinberger <>
To:	Chad Gray <>
Cc:	"" <>
Subject: Re: Netfilter lacks ability to filter packets via Application-origin

On Thu, Sep 27, 2012 at 11:04 PM, Chad Gray <> wrote:
> Users need the ability for Linux firewall to filter packets based on what
> Application they are originating from. This ability is present in Mac and
> Windows firewalls, but not Linux.
> For example, users would like ability to open Port 80 for Firefox, but keep
> Port 80 closed for other applications.

You can implement such filters using LSM like SELinux.

> This ability enhances Privacy & Security of the user but also helps to better
> inform the user about the comings and goings of internet traffic and what
> application/s are causing the traffic.

I seriously doubt that.

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