


TCPNICE(8)					       TCPNICE(8)


NAME
       tcpnice - slow down TCP connections on a LAN

SYNOPSIS
       tcpnice [-I] [-i interface] [-n increment] [expression]

DESCRIPTION
       tcpnice	slows  down specified in-progress TCP connections
       on a LAN via "active" traffic shaping (useful for sniffing
       fast networks).

OPTIONS
       -I     Forge  ICMP  source  quench  replies in addition to
	      tiny TCP window advertisements.

       -i interface
	      Specify the interface to listen on.

       -n increment
	      Specify an amount by which to  "nice"  the  connec-
	      tion.  The  imposed  latency can be adjusted over a
	      range of 1 (normal speed) to 20 (the slowest).

       expression
	      Specify a tcpdump(8) filter  expression  to  select
	      the  connections	to slow down. If no expression is
	      given, all TCP traffic on the LAN will  be  artifi-
	      cially delayed.

SEE ALSO
       dsniff(8), tcpkill(8)

AUTHOR
       Dug Song <dugsong@monkey.org>























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