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Date:      Fri, 10 Nov 2023 10:07:30 +0100
From:      Alexander Leidinger <Alexander@Leidinger.net>
To:        Philip Paeps <philip@freebsd.org>
Cc:        freebsd-arch@freebsd.org
Subject:   Re: Any particular reason we don't have sshd oomprotected by default?
Message-ID:  <a169e4461ddabf96afc536809dff5b48@Leidinger.net>
In-Reply-To: <5F066A40-CD1D-4D32-850E-0A85D86AE499@freebsd.org>
References:  <8b9484ba83e373ece0e322e14c924da6@Leidinger.net> <5F066A40-CD1D-4D32-850E-0A85D86AE499@freebsd.org>

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Am 2023-11-09 12:18, schrieb Philip Paeps:
> On 2023-11-09 15:54:22 (+0800), Alexander Leidinger wrote:
>> We have syslogd oomprotected by default (/etc/defaults/rc.conf). Is 
>> there a particular reason we don't have sshd protected the same way?
>> 
>> Any objections if I would commit such a change (sshd_oomprotect=YES in 
>> defaults/rc.conf)?
> 
> I don't have feelings about it either way.  It probably makes sense to 
> optimise for installations that don't have out of band access.
> 
>> I was also thinking about which other daemon we should protect by 
>> default, but apart from the need to make sure important logs are 
>> written to find issues which may have caused the oom trigger, and the 
>> need to be able to login to such a troubled system, I didn't see any 
>> other service as such critical (we could argue about ntpd, but I send 
>> to be on the "may be protected" (not for my use cases) and not to be 
>> on the "has to be protected" side) to include it in this proposal.
> 
> In the FreeBSD.org cluster, we set local_unbound_oomprotect="YES" too.  
> Without DNS, everything grinds to a halt.  Including SSH.

https://reviews.freebsd.org/D42544

Bye,
Alexander.

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