Windows XP A to Z - http://www.softwaretipsandtricks.com/windowsxp
Disable ICMP Redirect for security
http://www.softwaretipsandtricks.com/windowsxp/articles/326/1/Disable-ICMP-Redirect-for-security
Super Admin
 
By Super Admin
Published on 02/24/2005
 
Disable ICMP Redirect for security

Disable ICMP Redirect for security

If your running server versions, add the following reg_dword in the location shown and set it to "0". This will help keep an icmp re-direct attack from taking over your server.

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters]
"EnableICMPRedirect"=dword:00000000

Works in both Win2k and XP