On Tue, 17 Apr 2018, Zbigniew Jędrzejewski-Szmek wrote:

> Services which are subject the guidelines allow to be enabled by
> default should be such that starting them briefly should not cause
> any permanent effects.

Some 'real world' data, from a unit that was deployed this 
morning at 

2018-04-17 10:30:17      
VM Created      herr...@owlriver.com
New VM ordered

This email sent at 1623

Last failed login: Tue Apr 17 16:22:11 EDT 2018 from 
        61.177.172.63 on ssh:notty
There were 1354 failed login attempts since the last successful login.
[root@pl085086017 ~]# 

so about 6 hours and 1354 probes -- 200 an hour on average

That 'window' of open-ness to probers, except for the fact 
that we blow in 'keyed access only' late in the install 
process by automation, would not constitute: 
        starting them briefly should not cause any permanent effects

I think it proposes to needlessly exposes a unit in an 
un-patched state, to being taken over

-- Russ herrold
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