[Samba] File server questions

Wed Sep 13 14:48:16 UTC 2017

Hai Flavio, 

> -----Oorspronkelijk bericht-----
> Van: samba [mailto:samba-bounces at lists.samba.org] Namens 
> Flávio Silveira via samba
> Verzonden: woensdag 13 september 2017 16:19
> Aan: samba at lists.samba.org
> Onderwerp: Re: [Samba] File server questions
> 
> 
> 
> Em 13/09/2017 10:36, L.P.H. van Belle via samba escreveu:
> > Hai, Flavio,
> >
> > Yes, it looks good, but i suggest, if you setting up a new 
> DC on debian..
> > Go here: https://github.com/thctlo/samba4/tree/master/howtos
> > And read the file: stretch-base-2-samba-minimal-ad.txt
> >
> >
> 
> Thank for your reply Louis!
> 
> I've been reading your howtos, but I didn't know how to 
> execute them, so 
> I decided to create a new file as below:

These are not executable yet. Thats why the are in .txt files. 
You can use it as guidance.

> 
> > # Local clock. Note that is not the "localhost" address!
> > server 127.127.1.0
> > fudge  127.127.1.0 stratum 10
> >
> > # Where to retrieve the time from
> > server a.st1.ntp.br iburst prefer
> > server b.st1.ntp.br iburst prefer
> > server c.st1.ntp.br iburst prefer
> > server d.st1.ntp.br iburst prefer
> >
> > driftfile       /var/lib/ntp/ntp.drift
> > logfile         /var/log/ntpstats
> > ntpsigndsocket  /var/lib/samba/ntp_signd/
> >
> > # Access control
> > # Default restriction: Allow clients only to query the time
> > restrict default kod nomodify notrap nopeer mssntp
> >
> > # No restrictions for "localhost"
> > restrict 127.0.0.1
> >
> > # Enable the time sources to only provide time to this host
> > restrict a.st1.ntp.br   mask 255.255.255.255    nomodify 
> notrap nopeer 
> > noquery
> > restrict b.st1.ntp.br   mask 255.255.255.255    nomodify 
> notrap nopeer 
> > noquery
> > restrict c.st1.ntp.br   mask 255.255.255.255    nomodify 
> notrap nopeer 
> > noquery
> > restrict d.st1.ntp.br   mask 255.255.255.255    nomodify 
> notrap nopeer 
> > noquery
> >
> > # Interfaces ntp daemon should listen
> >
> > interface listen lo
> > interface listen enp2s0
> >
> > # Ignore IPv6 wildcard
> >
> > interface ignore ipv6
> 
> As you can see, my "Access control" line doesn't have "noquery" and 
> "limited", but I don't know much about ntp, so I don't know 
> if I should add or not.
> 
> Your lines also have -4 and -6, which seems to be related to IPv4 and 
> IPv6, if I plan to use IPv4 only, can I stick with "default"?
> 
> Thanks
> 
> 
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> 
I suggest, use the interface ignore ipv6 ( you already did set it ) for the ipv6 ipnumbers, except localhost-ipv6. ( ::1 ) 
The other defaults are good to start with, then when everything is running correct, only then go optimize the config. 
And only one thing at a time, or you end up in a mess..  Just a tip. 

So below is a copy past of a original jessie ntp.conf ( from before my upgrade to stretch)
And for you, i changed it to your setup. See what i did and compair it to yours.

####### NTP Begin ( Debian Jessie version ) 
# /etc/ntp.conf, configuration for ntpd; see ntp.conf(5) for help

driftfile /var/lib/ntp/ntp.drift

# Enable this if you want statistics to be logged.
#statsdir /var/log/ntpstats/

statistics loopstats peerstats clockstats
filegen loopstats file loopstats type day enable
filegen peerstats file peerstats type day enable
filegen clockstats file clockstats type day enable

# You do need to talk to an NTP server or two (or three).
#server ntp.your-provider.example
server a.st1.ntp.br
server b.st1.ntp.br
server c.st1.ntp.br

# pool.ntp.org maps to about 1000 low-stratum NTP servers.  Your server will
# pick a different set every time it starts up.  Please consider joining the
# pool: <http://www.pool.ntp.org/join.html>
#pool 0.debian.pool.ntp.org iburst
#pool 1.debian.pool.ntp.org iburst
#pool 2.debian.pool.ntp.org iburst
#pool 3.debian.pool.ntp.org iburst

# Access control configuration; see /usr/share/doc/ntp-doc/html/accopt.html for
# details.  The web page <http://support.ntp.org/bin/view/Support/AccessRestrictions>
# might also be helpful.
#
# Note that "restrict" applies to both servers and clients, so a configuration
# that might be intended to block requests from certain clients could also end
# up blocking replies from your own upstream servers.

# By default, exchange time with everybody, but don't allow configuration.
restrict -4 default kod notrap nomodify nopeer noquery mssntp
restrict -6 default kod notrap nomodify nopeer noquery mssntp

# Local users may interrogate the ntp server more closely.
restrict 127.0.0.1
restrict ::1

# Needed for adding pool entries
restrict source notrap nomodify noquery

# Clients from this (example!) subnet have unlimited access, but only if
# cryptographically authenticated.
#restrict 192.168.123.0 mask 255.255.255.0 notrust

# If you want to provide time to your local subnet, change the next line.
# (Again, the address is an example only.)
#broadcast 192.168.123.255

# If you want to listen to time broadcasts on your local subnet, de-comment the
# next lines.  Please do this only if you trust everybody on the network!
#disable auth
#broadcastclient

interface listen lo
interface listen enp2s0
#interface ignore wildcard
interface ignore ipv6

######  Needed for Samba 4  ######
# in the restrict -4 or -6 added mssntp at the end
# Location of the samba ntp_signed directory
ntpsigndsocket /var/lib/samba/ntp_signd
####### NTP end

Greetz, 

Louis