Linux - Netzwerk und Serveradminstration NTP: Unterschied zwischen den Versionen
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| Zeile 43: | Zeile 43: | ||
pool 3.debian.pool.ntp.org iburst | pool 3.debian.pool.ntp.org iburst | ||
restrict default kod nomodify noquery limited | restrict default kod nomodify noquery limited | ||
| − | restrict 10. | + | restrict 10.88.2XX.0 mask 255.255.255.0 nomodify notrap |
restrict 172.26.2XX.0 mask 255.255.255.0 nomodify notrap | restrict 172.26.2XX.0 mask 255.255.255.0 nomodify notrap | ||
restrict 10.2XX.1.0 mask 255.255.255.0 nomodify notrap | restrict 10.2XX.1.0 mask 255.255.255.0 nomodify notrap | ||
Version vom 24. April 2026, 09:01 Uhr
NTP Server
Vorbereitungen
- VirtualBox Server-Vorlage klonen
- Der Host soll im DMZ-Netzwerk liegen
- statische IP-Adresse nach dem Netzwerkplan setzen (/etc/network/interfaces)
- SSH-Schlüssel des Kit Hosts für User kit hinterlegen
Netzkonfiguration DNS-Server (DMZ)
| Parameter | Wert | Erläuterung |
|---|---|---|
| Netzwerk (NIC) | DMZ | Interface-Zuweisung in VirtualBox |
| IP | 10.88.2XX.17 | Statische IP |
| CIDR | 24 | Classless Inter-Domain Routing Präfixlänge |
| GW | 10.88.2XX.1 | GATEWAY |
| NS | 10.88.2XX.21 | Resolver |
| FQDN | ntp.it2XX.int | Fully Qualified Domain Name |
| SHORT | nntp | Short Name |
| DOM | it2XX.int | Domain Name |
- Anpassen des Templates
installieren ntp
- sudo apt install ntpsec
Anpassen
- cat /etc/ntpsec/ntp.conf
driftfile /var/lib/ntpsec/ntp.drift leapfile /usr/share/zoneinfo/leap-seconds.list tos maxclock 11 tos minclock 4 minsane 3 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 restrict default kod nomodify noquery limited restrict 10.88.2XX.0 mask 255.255.255.0 nomodify notrap restrict 172.26.2XX.0 mask 255.255.255.0 nomodify notrap restrict 10.2XX.1.0 mask 255.255.255.0 nomodify notrap restrict ::1
Handling wie gehabt
- systemctl status ntpsec
- journalctl -fu ntpsec
Wo lauscht der ntpserver
- ss -lnup | grep 123
Wie bindet man die Clients
Statitsch
- Inmstallation auf dem Client
- apt install ntpsec
- Konfiguration
- cat /etc/ntpsec/ntp.conf
driftfile /var/lib/ntpsec/ntp.drift leapfile /usr/share/zoneinfo/leap-seconds.list tos maxclock 11 tos minclock 4 minsane 3 restrict default kod nomodify noquery limited restrict 127.0.0.1 restrict ::1 server ntp.it213.int
