IP Source-routing can be disabled as of SP5

[dleblanc () MICROSOFT COM (David LeBlanc)]

One of the security-related changes that did not appear in Aleph1's summary
of SP5 is that source-routing now may be disabled.  The knowledge base
article to reference is Q217336
(http://support.microsoft.com/support/kb/articles/q217/3/36.asp).

The registry key to modify is
HKLM\System\CurrentControlSet\Services\Tcpip\Parameters, and the name of the
value to add is DisableIPSourceRouting, type REG_DWORD.  To disable
source-routing, set this value to 1.

Note - the registry key information is not in the KB article at the moment.
I'm told this will be corrected shortly.