$FreeBSD: src/lib/libalias/HISTORY,v 126.96.36.199 2000/08/18 20:00:00 jhb Exp $ Version 1.0: August 11, 1996 (cjm) Version 1.1: August 20, 1996 (cjm) - Host accepts incoming connections for ports 0 to 1023. Version 1.2: September 7, 1996 (cjm) - Fragment handling error in alias_db.c corrected. Version 1.3: September 15, 1996 (cjm) - Generalized mechanism for handling incoming connections (no more 0 to 1023 restriction). - Increased ICMP support (will handle traceroute now). - Improved TCP close connection logic. Version 1.4: September 16, 1996 (cjm) Version 1.5: September 17, 1996 (cjm) - Corrected error in handling incoming UDP packets with zero checksum. Version 1.6: September 18, 1996 - Simplified ICMP data storage. Will now handle tracert from Win95 and NT as well as FreeBSD traceroute, which uses UDP packets to non-existent ports. Version 1.7: January 9, 1997 (cjm) - Reduced malloc() activity for ICMP echo and timestamp requests. - Added handling for out-of-order IP fragments. - Switched to differential checksum computation for IP headers (TCP, UDP and ICMP checksums were already differential). - Accepts FTP data connections from other than port 20. This allows one ftp connections from two hosts which are both running packet aliasing. - Checksum error on FTP transfers. Problem in code located by Martin Renters and Brian Somers. Version 1.8: January 14, 1997 (cjm) - Fixed data type error in function StartPoint() in alias_db.c (this bug did not exist before v1.7) Problem in code located by Ari Suutari. Version 1.9: February 1, 1997 (Eivind Eklund <firstname.lastname@example.org>) - Added support for IRC DCC (ee) - Changed the aliasing routines to use ANSI style throughout (ee) - Minor API changes for integration with other programs than PPP (ee) - Fixed minor security hole in alias_ftp.c for other applications of the aliasing software. Hole could _not_ manifest in ppp+pktAlias, but could potentially manifest in other applications of the aliasing. (ee) - Connections initiated from packet aliasing host machine will not have their port number aliased unless it conflicts with an aliasing port already being used. (There is an option to disable this for debugging) (cjm) - Sockets will be allocated in cases where there might be port interference with the host machine. This can be disabled in cases where the ppp host will be acting purely as a masquerading router and not generate any traffic of its own. (cjm) Version 2.0: March, 1997 (cjm) - Aliasing links are cleared only when a host interface address changes. - PacketAliasPermanentLink() API added. - Option for only aliasing private, unregistered IP addresses added. - Substantial rework to the aliasing lookup engine. Version 2.1: May, 1997 (cjm) - Continuing rework to the aliasing lookup engine to support multiple incoming addresses and static NAT. PacketAliasRedirectPort() and PacketAliasRedirectAddr() added to API. - Now supports outgoing as well as incoming ICMP error messages. Version 2.2: July, 1997 (cjm) - Rationalized API function names to all begin with "PacketAlias..." Old function names are retained for backwards compatibility. - Packet aliasing engine will now free memory of fragments which are never resolved after a timeout period. Once a fragment is resolved, it becomes the users responsibility to free the memory. Version 2.3: August 11, 1997 (cjm) - Problem associated with socket file descriptor accumulation in alias_db.c corrected. The sockets had to be closed when a binding failed. Problem in code located by Gordon Burditt. Version 2.4: September 1, 1997 (cjm) - PKT_ALIAS_UNREGISTERED_ONLY option repaired. This part of the code was incorrectly re-implemented in version 2.1. Version 2.5: December, 1997 (ee) - Added PKT_ALIAS_PUNCH_FW mode for firewall bypass of FTP/IRC DCC data connections. Also added improved TCP connection monitoring. Version 2.6: May, 1998 (amurai) - Added supporting routine for NetBios over TCP/IP. Version 3.0: January 1, 1999 - Transparent proxying support added. - PPTP redirecting support added based on patches contributed by Dru Nelson <email@example.com>. Version 3.1: May, 2000 (Erik Salander, firstname.lastname@example.org) - Added support to alias 227 replies, allows aliasing for FTP servers in passive mode. - Added support for PPTP aliasing. Version 3.2: July, 2000 (Erik Salander, email@example.com and Junichi Satoh, firstname.lastname@example.org) - Added support for streaming media (RTSP and PNA) aliasing.