EndRun Sonoma N12, User Manual

Page: 83 / 174

S o n o m a U s e r M a n u a l 67
"Smarter Timing Solutions"
Chapter
Eight
IPv6
The Sonoma Time Servers support IPv6 out-of-the-box with a modern version 3.2.2 Linux kernel.
During network configuration, you have the option to disable IPv6 on either or both Ethernet ports.
The IPv6 addressing scheme will see expanding deployment in the near future due to the fact that
there are no longer any IPV4 addresses to be allocated in many regions of the world.
IPv6
Capabilities
The presence of an IPv6-capable kernel will automatically enable most of the IPv6 capabilities. By
default, autoconfiguration of the Ethernet interfaces via IPv6 Router Advertisements is enabled. To
disable acceptance of Router Advertisements, or to configure a static IPv6 address and default IPv6
gateway, and to configure IPv6 domain name servers, you must run the interactive
netconfig
script.
Either method will allow you to configure your Ethernet interface for both IPv4 and IPv6 operation.
Using the
netconfig
script has the advantage that you can also configure the hostname and domain-
name for the unit.
OpenSSH
By default,
sshd
is factory-configured to listen on both IPv4 and IPv6 addresses. It may be forced to
listen on either IPv4 only, or IPv6 only by editing the
/etc/ssh/sshd_config
file and modifying the
Ad-
dressFamily
directive, and then copying it to /boot/etc/ssh . Refer to the sshd_config man page for
detailed information (
man sshd_config
).
Apache HTTP
By default,
httpd
is factory-configured to listen on both IPv4 and IPv6 addresses. It may be forced
to listen on either IPv4 only, or IPv6 only by editing the /etc/httpd/httpd.conf configuration file and
adding a
Listen
directive, and then copying it to
/boot/etc/httpd
. Refer to the Apache HTTP docu-
mentation for details.
Net-SNMP
By default,
snmpd
is factory-configured to listen on both IPv4 and IPv6 addresses. This may be
changed by editing
/etc/rc.d/rc.snmpd
and modifying the agent address argument passed to
snmpd
at
start-up, and then copying it to /boot/etc/rc.d .