如何禁用IPv6

Redhat EL/Fedora

参考：http://www.sysdigg.com/how-to-disable-ipv6-in-rhel-5-linux

In Fedora or RHEL5 Linux modules are loaded using /etc/modprobe.conf file, open the modprobe.conf file using your friendly editor vi or pico and add these line to disable autloading of IPv6 module

alias net-pf-10 off alias ipv6 off

2. Next in your global network configuration file edit the IPv6 option using your root login session:

bosdev # vi /etc/sysconfig/network

Change following option to NO:

NETWORKING_IPV6=yes to NETWORKING_IPV6=no

 

3. To turn off the IPv6 tables immediately run Linux service command to disable the IPv6 service

bosdev# service ip6tables stop

 

4. For permanently disabling the ip6tables using chkconfig command so it wouldn’t start during next Linux reboot

bosdev# chkconfig ip6tables off

 

Using these steps I was able to successfully turn of IPv6 on my RHEL5 Linux machine. If you want to turn off IPv6 on your RHEL 5 or Fedora machines you can disable it by following these steps.

Windows Vista/ Windows 7/ Windows 2008

参考： http://support.microsoft.com/kb/929852

To disable certain IPv6 components yourself, follow these steps:

1. Click Start , type regedit in the Start Search box, and then click regedit.exe in the Programs list.
2. In the User Account Control dialog box, click Continue .
3. In Registry Editor, locate and then click the following registry subkey:
   HKEY_LOCAL_MACHINE/SYSTEM/CurrentControlSet/Services/Tcpip6/Parameters/
4. Double-click DisabledComponents to modify the DisabledComponents entry.
   
   Note If the DisabledComponents entry is unavailable, you must create it. To do this, follow these steps:
   1. In the Edit menu, point to New , and then click DWORD (32-bit) Value .
   2. Type DisabledComponents , and then press ENTER.
   3. Double-click DisabledComponents .
5. Type any one of the following values to configure the IPv6 protocol, and then click OK :
   1. Type 0 to enable all IPv6 components.
      
      Note The value "0" is the default setting.
   2. Type 0xffffffff to disable all IPv6 components, except the IPv6 loopback interface. This value also configures Windows Vista to use Internet Protocol version 4 (IPv4) instead of IPv6 in prefix policies.
   3. Type 0x20 to use IPv4 instead of IPv6 in prefix policies.
   4. Type 0x10 to disable native IPv6 interfaces.
   5. Type 0x01 to disable all tunnel IPv6 interfaces.
   6. Type 0x11 to disable all IPv6 interfaces except for the IPv6 loopback interface.