[tor-relays] Help with FreeBSD relays

Shawn Webb shawn.webb at hardenedbsd.org
Wed Mar 31 14:12:47 UTC 2021

On Wed, Mar 31, 2021 at 01:09:45PM +0200, René Ladan wrote:
> On 30-03-2021 15:47, Shawn Webb wrote:
> > On Tue, Mar 30, 2021 at 02:36:36AM +0000, xplato wrote:
> > > Greetings,
> > > 
> > > I am a bit of a noob here so please bear with me. I ran a relay using Ubuntu with very few issues however I decide to add an additional relay and decided to use FreeBSD. They will only run for around 18 hours and then they shut down. I have adjust the torrc file every way I know how and increased the Max vnodes thinking this may have been my issue. I can post the sysrc and torrc if needed. Anyone that might help me figure this out I would be grateful otherwise I am going to reluctantly move them both back to Ubuntu.
> > Emerald Onion runs over twenty Tor exit nodes on HardenedBSD 12 and
> > 13. Given Tor's need for security, you might want to consider using
> > HardenedBSD, a derivative of FreeBSD that implements exploit
> > mitigations and security hardening technologies. FreeBSD's state of
> > security leaves much to be desired. Tor's relay operators and users
> > really should at least have exploit mitigations like ASLR and W^X
> > applied.
> But it won't fix the problem at hand, unless memory management in
> HardenedBSD is different than in FreeBSD.

Memory management is indeed different in HardenedBSD than in FreeBSD.
HardenedBSD implemented a clean-room version of grsecurity's PaX ASLR.
FreeBSD's version of ASLR, more appropriately called ASR, has known
issues. HardenedBSD's does not.


Shawn Webb
Cofounder / Security Engineer

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