21 nov. 2011

Create a loopback Interface on MacOS

Create a loopback Interface on MacOS X:
ifconfig lo0 alias 172.16.123.1 will add an alias IP 172.16.123.1 to the loopback adapter
ifconfig lo0 -alias 172.16.123.1 will remove it

NTP - ACL

NTP - Network Time Protocol Packet types: -  Control messages : don't bother with this. -  NTP request/update messages: used for time sy...