Meinberg LANTIME/GPS Operating Instructions Manual page 40

In the network configuration all parameters related to the network interfaces can be
changed. In the first section you can change the hostname and domain name. You can
also specify two nameserver and two SYSLOG server. In the nameserver and syslog
server fields you may enter an IPv4 or IPv6 address (the syslog servers can be
specified as a hostname, too).
All information written to the LANTIME SYSLOG (/var/log/messages) can be
forwarded to one or two remote SYSLOG servers. The SYSLOG daemon of this
remote SYSLOG needs to be configured to allow remote systems to create entries. A
Linux SYSLOD can be told to do so by using the command "syslogd –r" when
starting the daemon.
If you enter nothing in the SYSLOG server fields or specify 0.0.0.0 as the SYSLOG
servers addresses, the remote SYSLOG service is not used on your LANTIME.
Please be aware of the fact that all SYSLOG entries of the timeserver are stored in /
var/log/messages and will be deleted when you power off or reboot the timeserver. A
daily CRON job is checking for the size of the LANTIME SYSLOG and deletes it
automatically, if the log size is exceeding a certain limit.
By specifying one or two remote SYSLOG servers, you can preserve the SYSLOG
information even when you need to reboot or switch off the LANTIME.
In the second section the possible network protocols and access methods can be
configured. You can enable/disable TELNET, FTP, SSH, HTTP, HTTPS, SNMP and
NETBIOS by checking/unchecking the appropriate check boxes. After you saved
your settings with the "Save" button, all these subsystems are stopped and eventually
restarted (only if they are enabled, of course).
The third section allows you to select the IP protocol version 6. In this version the
IPv4 protocol is mandatory and cannot be disabled, but as a workaround a standalone
IPv6 mode can be achieved by entering an IPv4 address "0.0.0.0" and disabling the
DHCP client option for every network interface of your LANTIME. By doing so, you
ensure that the timeserver cannot be reached with IPv4. Please note that TELNET,
FTP and NETBIOS cannot be used over IPv6 in this version. It is no problem to use
IPv4 and IPv6 in a mixed mode environment on your LANTIME.
40