7/9/2002 IpDrv.dll for Unreal Tournament version 436 ====================================================
This is a replacement IpDrv.dll to fix the Denial of Service attack bug described here:
http://online.securityfocus.com/archive/1/280544
It also fixes a Windows 2000+ server problem where server lag gradually increases over time.
Both problems are caused by incorrect handling of ICMP port unreachable messages. When a server running the replacement IpDrv.dll sees an ICMP port unreachable message, it removes that IP/port from its list of clients and no longer attempts any communication with that IP/port pair.
Jack Porterjack@epicgames.com |