Update the Time on Windows XP

Windows Server 2003 and Windows XP now use NTP instead of SNTP. The command that now does everything regarding WTS is: w32tm

The following command configure using stdtime.gov.hk as an external time server.
w32tm /config /manualpeerlist:stdtime.gov.hk,0x1 /syncfromflags:MANUAL /update

Now we need to restart w32time services.
net stop w32time
net start w32time

Sync local computer with time server.
w32tm /resync /rediscover

Disable IPv6 on CentOS 5.2 and Fedora 9

vi /etc/sysconfig/network

set "NETWORKING_IPV6" to "no"

vi /etc/modprobe.conf

Add

alias ipv6 off
alias net-pf-10 off

Run chkconfig to disable the IPv6 firewall
chkconfig --level 345 ip6tables off

Reboot the system