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Date:      Sat, 19 Sep 2015 01:44:36 +0800
From:      Alastair Hogge <agh@fastmail.fm>
To:        "William A. Mahaffey III" <wam@hiwaay.net>
Cc:        freebsd-security@freebsd.org, freebsd-questions@freebsd.org
Subject:   Re: HTTPS on freebsd.org, git, reproducible builds
Message-ID:  <20150918174436.GF85844@kropotkin.auxio>
In-Reply-To: <55FC19B7.1010607@hiwaay.net>
References:  <CAD2Ti2_YNkNi2b=PzFCwu3PVaP8hOzADys3=-k0AqvsDRhJpzA@mail.gmail.com> <1442578892.1807598.387215049.07156D0F@webmail.messagingengine.com> <1442579551.1810383.387233801.46EBDA6D@webmail.messagingengine.com> <55FC1498.7090902@Plominski.eu> <55FC19B7.1010607@hiwaay.net>

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On 2015-09-18 Fri 09:09:05 +0000 William A. Mahaffey III <wam@hiwaay.net>, wrote:
> On 09/18/15 08:47, Daniel DP. Plominski wrote:
> > -----BEGIN PGP SIGNED MESSAGE-----
> > Hash: SHA512
> >
> > well, encryption does not cost much, most mobile devices are now fast enough
> > for IP obfuscation there vpn providers or anonymity networks like Tor
> >
> > you should look for "when leaken metadata", customized Firefox
> > versionslike the "torbundle" package or FreeBSD features such as:
> > disabled tcp timpstamp, activated net.inet.ip.stealth etc.
> >
> > may be that the most information are not critical of freebsd.org
> > on a page about political commitment, however, twice what you click on
> >
> > in the post snowden/nsa area, i think it is not heard now de rigueur,
> > but should be compulsory
>
> Where is that 'net.inet.ip.stealth' setting ? I didn't find it in my
> /etc/defaults/rc.conf file ....

What about:
$ sysctl -d net.inet.ip.stealth
net.inet.ip.stealth: IP stealth mode, no TTL decrementation on forwarding

$ sysctl -d net.inet.ip.random_id
net.inet.ip.random_id: Assign random ip_id values

Add them to /etc/sysctl.conf

To good health
--
The liberals can understand everything but people who don't understand them.
		-- Lenny Bruce



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