If you have not built libpcap, and your system does not have libpcapinstalled, install libpcap first. Your system might provide a versionof libpcap that can be installed; if so, to compile tcpdump you mightneed to install a "developer" version of libpcap as well as the"run-time" version. You can also install tcpdump.org's version oflibpcap; see the README file in this directory for the ftp location.You will need an ANSI C compiler to build tcpdump. The configure scriptwill abort if your compiler is not ANSI compliant. If this happens, usethe generally available GNU C compiler (GCC).After libpcap has been built (either install it with "make install" ormake sure both the libpcap and tcpdump source trees are in the samedirectory), run ./configure (a shell script). "configure" willdetermine your system attributes and generate an appropriate Makefilefrom Makefile.in. Now build tcpdump by running "make".If everything builds ok, su and type "make install". This will installtcpdump and the manual entry. Any user will be able to use tcpdump toread saved captures. Whether a user will be able to capture trafficdepends on the OS and the configuration of the system; see the tcpdumpman page for details. DO NOT give untrusted users the ability tocapture traffic. If a user can capture traffic, he or she could useutilities such as tcpdump to capture any traffic on your net, includingpasswords.Note that most systems ship tcpdump, but usually an older version.Remember to remove or rename the installed binary when upgrading.If your system is not one which we have tested tcpdump on, you may haveto modify the configure script and Makefile.in. Please send us patchesfor any modifications you need to make.Please see "PLATFORMS" for notes about tested platforms.FILES-----CHANGES - description of differences between releasesCREDITS - people that have helped tcpdump alongINSTALL.txt - this fileLICENSE - the license under which tcpdump is distributedMakefile.in - compilation rules (input to the configure script)README - description of distributionReadme.Win32 - notes on building tcpdump on Win32 systems (with WinPcap)VERSION - version of this releaseaclocal.m4 - autoconf macrosaddrtoname.c - address to hostname routinesaddrtoname.h - address to hostname definitionsah.h - IPSEC Authentication Header definitionsappletalk.h - AppleTalk definitionsatime.awk - TCP ack awk scriptatm.h - ATM traffic type definitionsatmuni31.h - ATM Q.2931 definitionsbpf_dump.c - BPF program printing routines, in case libpcap doesn't have themchdlc.h - Cisco HDLC definitionscpack.c - functions to extract packed datacpack.h - declarations of functions to extract packed dataconfig.guess - autoconf supportconfig.h.in - autoconf inputconfig.sub - autoconf supportconfigure - configure script (run this first)configure.in - configure script sourceether.h - Ethernet definitionsethertype.h - Ethernet type value definitionsextract.h - alignment definitionsgmpls.c - GMPLS definitionsgmpls.h - GMPLS declarationsgmt2local.c - time conversion routinesgmt2local.h - time conversion prototypesinstall-sh - BSD style install scriptinterface.h - globals, prototypes and definitionsip.h - IP definitionsip6.h - IPv6 definitionsipproto.c - IP protocol type value-to-name tableipproto.h - IP protocol type value definitionsl2vpn.c - L2VPN encapsulation value-to-name tablel2vpn.h - L2VPN encapsulation definitionslbl/os-*.h - OS-dependent defines and prototypesllc.h - LLC definitionsmachdep.c - machine dependent routinesmachdep.h - machine dependent definitionsmakemib - mib to header scriptmib.h - mib definitionsmissing/* - replacements for missing library functionsmkdep - construct Makefile dependency listmpls.h - MPLS definitionsnameser.h - DNS definitionsnetdissect.h - definitions and declarations for tcpdump-as-library (under development)nfs.h - Network File System V2 definitionsnfsfh.h - Network File System file handle definitionsnlpid.c - OSI NLPID value-to-name tablenlpid.h - OSI NLPID definitionsospf.h - Open Shortest Path First definitionspacketdat.awk - TCP chunk summary awk scriptparsenfsfh.c - Network File System file parser routinespcap_dump_ftell.c - pcap_dump_ftell() implementation, in case libpcapdoesn't have itpcap-missing.h - declarations of functions possibly missing from libpcapppp.h - Point to Point Protocol definitionsprint-802_11.c - IEEE 802.11 printer routinesprint-ap1394.c - Apple IP-over-IEEE 1394 printer routinesprint-ah.c - IPSEC Authentication Header printer routinesprint-aodv.c - AODV printer routinesprint-arcnet.c - ARCNET printer routinesprint-arp.c - Address Resolution Protocol printer routinesprint-ascii.c - ASCII packet dump routinesprint-atalk.c - AppleTalk printer routinesprint-atm.c - ATM printer routinesprint-beep.c - BEEP printer routinesprint-bgp.c - Border Gateway Protocol printer routinesprint-bootp.c - BOOTP and IPv4 DHCP printer routinesprint-bt.c - Bluetooth printer routinesprint-cdp.c - Cisco Discovery Protocol printer routinesprint-chdlc.c - Cisco HDLC printer routinesprint-cip.c - Classical-IP over ATM routinesprint-cnfp.c - Cisco NetFlow printer routinesprint-dccp.c - DCCP printer routinesprint-decnet.c - DECnet printer routinesprint-dhcp6.c - IPv6 DHCP printer routinesprint-domain.c - Domain Name System printer routinesprint-dvmrp.c - Distance Vector Multicast Routing Protocol printer routinesprint-eap.c - EAP printer routinesprint-enc.c - OpenBSD IPsec encapsulation BPF layer printer routinesprint-egp.c - External Gateway Protocol printer routinesprint-esp.c - IPSEC Encapsulating Security Payload printer routinesprint-ether.c - Ethernet printer routinesprint-fddi.c - Fiber Distributed Data Interface printer routinesprint-fr.c - Frame Relay printer routinesprint-frag6.c - IPv6 fragmentation header printer routinesprint-gre.c - Generic Routing Encapsulation printer routinesprint-hsrp.c - Cisco Hot Standby Router Protocol printer routinesprint-icmp.c - Internet Control Message Protocol printer routinesprint-icmp6.c - IPv6 Internet Control Message Protocol printer routinesprint-igmp.c - Internet Group Management Protocol printer routinesprint-igrp.c - Interior Gateway Routing Protocol printer routinesprint-ip.c - IP printer routinesprint-ip6.c - IPv6 printer routinesprint-ip6opts.c - IPv6 header option printer routinesprint-ipcomp.c - IP Payload Compression Protocol printer routinesprint-ipx.c - IPX printer routinesprint-isakmp.c - Internet Security Association and Key Management Protocolprint-isoclns.c - ISO CLNS, ESIS, and ISIS printer routinesprint-krb.c - Kerberos printer routinesprint-l2tp.c - Layer Two Tunneling Protocol printer routinesprint-lane.c - ATM LANE printer routinesprint-llc.c - IEEE 802.2 LLC printer routinesprint-lspping.c - LSPPING printer routinesprint-lwres.c - Lightweight Resolver protocol printer routinesprint-mobile.c - IPv4 mobility printer routinesprint-mobility.c - IPv6 mobility printer routinesprint-mpls.c - Multi-Protocol Label Switching printer routinesprint-msdp.c - Multicast Source Discovery Protocol printer routinesprint-nfs.c - Network File System printer routinesprint-ntp.c - Network Time Protocol printer routinesprint-null.c - BSD loopback device printer routinesprint-ospf.c - Open Shortest Path First printer routinesprint-ospf6.c - IPv6 Open Shortest Path First printer routinesprint-pflog.c - OpenBSD packet filter log file printer routinesprint-pgm.c - Pragmatic General Multicast printer routinesprint-pim.c - Protocol Independent Multicast printer routinesprint-ppp.c - Point to Point Protocol printer routinesprint-pppoe.c - PPP-over-Ethernet printer routinesprint-pptp.c - Point-to-Point Tunnelling Protocol printer routinesprint-radius.c - Radius protocol printer routinesprint-raw.c - Raw IP printer routinesprint-rip.c - Routing Information Protocol printer routinesprint-ripng.c - IPv6 Routing Information Protocol printer routinesprint-rrcp.c - Realtek Remote Control Protocol routinesprint-rsvp.c - Resource reSerVation Protocol (RSVP) printer routinesprint-rt6.c - IPv6 routing header printer routinesprint-rx.c - AFS RX printer routinesprint-sctp.c - Stream Control Transmission Protocol printer routinesprint-sip.c - SIP printer routinesprint-sl.c - Compressed Serial Line Internet Protocol printer routinesprint-sll.c - Linux "cooked" capture printer routinesprint-slow.c - IEEE "slow protocol" (802.3ad) printer routinesprint-smb.c - SMB/CIFS printer routinesprint-snmp.c - Simple Network Management Protocol printer routinesprint-stp.c - IEEE 802.1d spanning tree protocol printer routinesprint-sunatm.c - SunATM DLPI capture printer routinesprint-sunrpc.c - Sun Remote Procedure Call printer routinesprint-symantec.c - Symantec Enterprise Firewall printer routinesprint-tcp.c - TCP printer routinesprint-telnet.c - Telnet option printer routinesprint-tftp.c - Trivial File Transfer Protocol printer routinesprint-timed.c - BSD time daemon protocol printer routinesprint-token.c - Token Ring printer routinesprint-udp.c - UDP printer routinesprint-usb.c - USB printer routinesprint-vjc.c - PPP Van Jacobson compression (RFC1144) printer routinesprint-vrrp.c - Virtual Router Redundancy Protocolprint-wb.c - White Board printer routinesprint-zephyr.c - Zephyr printer routinesrpc_auth.h - definitions for ONC RPC authenticationrpc_msg.h - definitions for ONC RPC messagessend-ack.awk - unidirectional tcp send/ack awk scriptsetsignal.c - OS-independent signal routinessetsignal.h - OS-independent signal prototypesslcompress.h - SLIP/PPP Van Jacobson compression (RFC1144) definitionssmb.h - SMB/CIFS definitionssmbutil.c - SMB/CIFS utility routinesstime.awk - TCP send awk scriptstrcasecmp.c - missing routinetcp.h - TCP definitionstcpdump.1 - manual entrytcpdump.c - main programudp.h - UDP definitionsutil.c - utility routinesvfprintf.c - emulation routinewin32 - headers and routines for building on Win32 systems