CVE-2000-0181
Firewall-1 3.0 and 4.0 leaks packets with private IP address information, which could allow remote attackers to determine the real IP address of the host that is making the connection.
Date published : 2000-04-25
http://www.securityfocus.com/bid/1054
http://archives.neohapsis.com/archives/bugtraq/2000-03/0119.html