This controls what IP addresses are allowed to access the SNMP
interface. You may specify one or more individual IP addresses
or networks. Networks may be specified with either address:netmask
or address/prefixlen syntaxes. Place each entry on a line by itself.
Blank means no IP restriction, the SNMP interface may be accessed
from any IP.
Example. If you have a local class C network of 10.10.1.0
as well as one public IP such as 198.49.220.1 you want to have SNMP access
you would use