HTTP/HTTPS
W
EB
GUI
–
W
EB
B
ROWSER
C
ONFIGURATION
I
NTERFACE
8029HEPTA-V2/GPS GPS - NTP Time Server with LAN Interface - V08.00
76 / 130
hopf
Elektronik GmbH
Nottebohmstr. 41
• D-58511 Lüdenscheid • Tel.: +49 (0)2351 9386-86 • Fax: +49 (0)2351 9386-93 • Internet: http://www.hopf.com • E-Mail: [email protected]
8.3.3.7.5 Addition of Exceptions to Standard Restrictions
After the standard restrictions have been set once, certain exceptions may be necessary for
special hosts/sub-networks in order to allow remote time servers and client hosts/sub-
networks to contact the NTP service.
These standard restrictions are to be added in the form of restriction lines.
An unrestricted access of the Time Server 8029HEPTA/GPS to its own
NTP service is always allowed, irrespective of whether standard
restrictions are ignored or not. This is necessary in order to be able to
display NTP data on the web interface.
Add restriction exception: (for each remote time server)
Restrictions:
Press
ADD
Enter the IP address of the remote time server.
Enable restrictions: e.g.
notrap / nopeer
/
noquery
✓
Allow
unrestricted access
to a special host (e.g. System administrator’s workstation):
Restrictions:
Press
ADD
IP address 192.168.1.101
Do not enable any restrictions
Allow a
sub-network
to receive time server and query server statistics:
Restrictions:
Press
ADD
IP address 192.168.1.0
Network mask
255.255.255.0
notrap / nopeer
✓
The entry of exceptions also works for IPv6 addresses. For this, the IPv6 address must be
entered in the column IPv4/IPv6 Address and the length of the IPv6 net mask must be entered
in the Netmask column.
