FreeBSD/Linux Kernel Cross Reference
sys/netinet/libalias/HISTORY

     $FreeBSD$
     
     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 <perhaps@yes.no>)
        - 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 <dnelson@redwoodsoft.com>.
   
   Version 3.1: May, 2000 (Erik Salander, erik@whistle.com)
       - 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, erik@whistle.com and 
         Junichi Satoh, junichi@junichi.org)
       - Added support for streaming media (RTSP and PNA) aliasing.
   
   Version 3.3: May 2021 (donner)
       - Dropped LibAliasCheckNewLink
       - Refactor the database handling
       - Switch to more effienct SPLAY trees

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