66e55756b5
- unifdef -DCOMPAT_IPFW (this was on by default already) - remove traces of in-kernel ip_nat package, it was never committed. - Make IPFW and DUMMYNET initialize themselves rather than depend on compiled-in hooks in ip_init(). This means they initialize the same way both in-kernel and as kld modules. (IPFW initializes now :-)
439 lines
17 KiB
C
439 lines
17 KiB
C
/*
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* Copyright (c) 1982, 1986, 1990, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)in.h 8.3 (Berkeley) 1/3/94
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* $Id: in.h,v 1.38 1998/12/14 18:09:13 luigi Exp $
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*/
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#ifndef _NETINET_IN_H_
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#define _NETINET_IN_H_
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/*
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* Constants and structures defined by the internet system,
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* Per RFC 790, September 1981, and numerous additions.
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*/
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/*
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* Protocols (RFC 1700)
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*/
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#define IPPROTO_IP 0 /* dummy for IP */
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#define IPPROTO_ICMP 1 /* control message protocol */
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#define IPPROTO_IGMP 2 /* group mgmt protocol */
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#define IPPROTO_GGP 3 /* gateway^2 (deprecated) */
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#define IPPROTO_IPIP 4 /* IP encapsulation in IP */
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#define IPPROTO_TCP 6 /* tcp */
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#define IPPROTO_ST 7 /* Stream protocol II */
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#define IPPROTO_EGP 8 /* exterior gateway protocol */
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#define IPPROTO_PIGP 9 /* private interior gateway */
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#define IPPROTO_RCCMON 10 /* BBN RCC Monitoring */
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#define IPPROTO_NVPII 11 /* network voice protocol*/
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#define IPPROTO_PUP 12 /* pup */
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#define IPPROTO_ARGUS 13 /* Argus */
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#define IPPROTO_EMCON 14 /* EMCON */
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#define IPPROTO_XNET 15 /* Cross Net Debugger */
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#define IPPROTO_CHAOS 16 /* Chaos*/
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#define IPPROTO_UDP 17 /* user datagram protocol */
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#define IPPROTO_MUX 18 /* Multiplexing */
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#define IPPROTO_MEAS 19 /* DCN Measurement Subsystems */
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#define IPPROTO_HMP 20 /* Host Monitoring */
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#define IPPROTO_PRM 21 /* Packet Radio Measurement */
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#define IPPROTO_IDP 22 /* xns idp */
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#define IPPROTO_TRUNK1 23 /* Trunk-1 */
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#define IPPROTO_TRUNK2 24 /* Trunk-2 */
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#define IPPROTO_LEAF1 25 /* Leaf-1 */
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#define IPPROTO_LEAF2 26 /* Leaf-2 */
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#define IPPROTO_RDP 27 /* Reliable Data */
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#define IPPROTO_IRTP 28 /* Reliable Transaction */
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#define IPPROTO_TP 29 /* tp-4 w/ class negotiation */
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#define IPPROTO_BLT 30 /* Bulk Data Transfer */
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#define IPPROTO_NSP 31 /* Network Services */
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#define IPPROTO_INP 32 /* Merit Internodal */
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#define IPPROTO_SEP 33 /* Sequential Exchange */
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#define IPPROTO_3PC 34 /* Third Party Connect */
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#define IPPROTO_IDPR 35 /* InterDomain Policy Routing */
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#define IPPROTO_XTP 36 /* XTP */
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#define IPPROTO_DDP 37 /* Datagram Delivery */
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#define IPPROTO_CMTP 38 /* Control Message Transport */
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#define IPPROTO_TPXX 39 /* TP++ Transport */
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#define IPPROTO_IL 40 /* IL transport protocol */
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#define IPPROTO_SIP 41 /* Simple Internet Protocol */
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#define IPPROTO_SDRP 42 /* Source Demand Routing */
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#define IPPROTO_SIPSR 43 /* SIP Source Route */
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#define IPPROTO_SIPFRAG 44 /* SIP Fragment */
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#define IPPROTO_IDRP 45 /* InterDomain Routing*/
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#define IPPROTO_RSVP 46 /* resource reservation */
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#define IPPROTO_GRE 47 /* General Routing Encap. */
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#define IPPROTO_MHRP 48 /* Mobile Host Routing */
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#define IPPROTO_BHA 49 /* BHA */
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#define IPPROTO_ESP 50 /* SIPP Encap Sec. Payload */
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#define IPPROTO_AH 51 /* SIPP Auth Header */
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#define IPPROTO_INLSP 52 /* Integ. Net Layer Security */
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#define IPPROTO_SWIPE 53 /* IP with encryption */
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#define IPPROTO_NHRP 54 /* Next Hop Resolution */
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/* 55-60: Unassigned */
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#define IPPROTO_AHIP 61 /* any host internal protocol */
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#define IPPROTO_CFTP 62 /* CFTP */
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#define IPPROTO_HELLO 63 /* "hello" routing protocol */
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#define IPPROTO_SATEXPAK 64 /* SATNET/Backroom EXPAK */
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#define IPPROTO_KRYPTOLAN 65 /* Kryptolan */
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#define IPPROTO_RVD 66 /* Remote Virtual Disk */
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#define IPPROTO_IPPC 67 /* Pluribus Packet Core */
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#define IPPROTO_ADFS 68 /* Any distributed FS */
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#define IPPROTO_SATMON 69 /* Satnet Monitoring */
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#define IPPROTO_VISA 70 /* VISA Protocol */
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#define IPPROTO_IPCV 71 /* Packet Core Utility */
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#define IPPROTO_CPNX 72 /* Comp. Prot. Net. Executive */
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#define IPPROTO_CPHB 73 /* Comp. Prot. HeartBeat */
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#define IPPROTO_WSN 74 /* Wang Span Network */
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#define IPPROTO_PVP 75 /* Packet Video Protocol */
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#define IPPROTO_BRSATMON 76 /* BackRoom SATNET Monitoring */
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#define IPPROTO_ND 77 /* Sun net disk proto (temp.) */
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#define IPPROTO_WBMON 78 /* WIDEBAND Monitoring */
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#define IPPROTO_WBEXPAK 79 /* WIDEBAND EXPAK */
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#define IPPROTO_EON 80 /* ISO cnlp */
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#define IPPROTO_VMTP 81 /* VMTP */
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#define IPPROTO_SVMTP 82 /* Secure VMTP */
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#define IPPROTO_VINES 83 /* Banyon VINES */
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#define IPPROTO_TTP 84 /* TTP */
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#define IPPROTO_IGP 85 /* NSFNET-IGP */
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#define IPPROTO_DGP 86 /* dissimilar gateway prot. */
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#define IPPROTO_TCF 87 /* TCF */
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#define IPPROTO_IGRP 88 /* Cisco/GXS IGRP */
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#define IPPROTO_OSPFIGP 89 /* OSPFIGP */
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#define IPPROTO_SRPC 90 /* Strite RPC protocol */
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#define IPPROTO_LARP 91 /* Locus Address Resoloution */
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#define IPPROTO_MTP 92 /* Multicast Transport */
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#define IPPROTO_AX25 93 /* AX.25 Frames */
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#define IPPROTO_IPEIP 94 /* IP encapsulated in IP */
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#define IPPROTO_MICP 95 /* Mobile Int.ing control */
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#define IPPROTO_SCCSP 96 /* Semaphore Comm. security */
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#define IPPROTO_ETHERIP 97 /* Ethernet IP encapsulation */
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#define IPPROTO_ENCAP 98 /* encapsulation header */
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#define IPPROTO_APES 99 /* any private encr. scheme */
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#define IPPROTO_GMTP 100 /* GMTP*/
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/* 101-254: Unassigned */
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/* 255: Reserved */
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/* BSD Private, local use, namespace incursion */
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#define IPPROTO_DIVERT 254 /* divert pseudo-protocol */
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#define IPPROTO_RAW 255 /* raw IP packet */
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#define IPPROTO_MAX 256
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/*
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* Local port number conventions:
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*
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* When a user does a bind(2) or connect(2) with a port number of zero,
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* a non-conflicting local port address is chosen.
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* The default range is IPPORT_RESERVED through
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* IPPORT_USERRESERVED, although that is settable by sysctl.
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*
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* A user may set the IPPROTO_IP option IP_PORTRANGE to change this
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* default assignment range.
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*
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* The value IP_PORTRANGE_DEFAULT causes the default behavior.
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*
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* The value IP_PORTRANGE_HIGH changes the range of candidate port numbers
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* into the "high" range. These are reserved for client outbound connections
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* which do not want to be filtered by any firewalls.
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*
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* The value IP_PORTRANGE_LOW changes the range to the "low" are
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* that is (by convention) restricted to privileged processes. This
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* convention is based on "vouchsafe" principles only. It is only secure
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* if you trust the remote host to restrict these ports.
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*
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* The default range of ports and the high range can be changed by
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* sysctl(3). (net.inet.ip.port{hi,low}{first,last}_auto)
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*
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* Changing those values has bad security implications if you are
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* using a a stateless firewall that is allowing packets outside of that
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* range in order to allow transparent outgoing connections.
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*
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* Such a firewall configuration will generally depend on the use of these
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* default values. If you change them, you may find your Security
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* Administrator looking for you with a heavy object.
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*
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* For a slightly more orthodox text view on this:
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*
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* ftp://ftp.isi.edu/in-notes/iana/assignments/port-numbers
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*
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* port numbers are divided into three ranges:
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*
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* 0 - 1023 Well Known Ports
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* 1024 - 49151 Registered Ports
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* 49152 - 65535 Dynamic and/or Private Ports
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*
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*/
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/*
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* Ports < IPPORT_RESERVED are reserved for
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* privileged processes (e.g. root). (IP_PORTRANGE_LOW)
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* Ports > IPPORT_USERRESERVED are reserved
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* for servers, not necessarily privileged. (IP_PORTRANGE_DEFAULT)
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*/
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#define IPPORT_RESERVED 1024
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#define IPPORT_USERRESERVED 5000
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/*
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* Default local port range to use by setting IP_PORTRANGE_HIGH
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*/
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#define IPPORT_HIFIRSTAUTO 49152
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#define IPPORT_HILASTAUTO 65535
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/*
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* Scanning for a free reserved port return a value below IPPORT_RESERVED,
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* but higher than IPPORT_RESERVEDSTART. Traditionally the start value was
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* 512, but that conflicts with some well-known-services that firewalls may
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* have a fit if we use.
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*/
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#define IPPORT_RESERVEDSTART 600
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/*
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* Internet address (a structure for historical reasons)
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*/
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struct in_addr {
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u_int32_t s_addr;
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};
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/*
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* Definitions of bits in internet address integers.
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* On subnets, the decomposition of addresses to host and net parts
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* is done according to subnet mask, not the masks here.
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*/
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#define IN_CLASSA(i) (((u_int32_t)(i) & 0x80000000) == 0)
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#define IN_CLASSA_NET 0xff000000
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#define IN_CLASSA_NSHIFT 24
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#define IN_CLASSA_HOST 0x00ffffff
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#define IN_CLASSA_MAX 128
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#define IN_CLASSB(i) (((u_int32_t)(i) & 0xc0000000) == 0x80000000)
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#define IN_CLASSB_NET 0xffff0000
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#define IN_CLASSB_NSHIFT 16
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#define IN_CLASSB_HOST 0x0000ffff
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#define IN_CLASSB_MAX 65536
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#define IN_CLASSC(i) (((u_int32_t)(i) & 0xe0000000) == 0xc0000000)
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#define IN_CLASSC_NET 0xffffff00
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#define IN_CLASSC_NSHIFT 8
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#define IN_CLASSC_HOST 0x000000ff
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#define IN_CLASSD(i) (((u_int32_t)(i) & 0xf0000000) == 0xe0000000)
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#define IN_CLASSD_NET 0xf0000000 /* These ones aren't really */
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#define IN_CLASSD_NSHIFT 28 /* net and host fields, but */
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#define IN_CLASSD_HOST 0x0fffffff /* routing needn't know. */
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#define IN_MULTICAST(i) IN_CLASSD(i)
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#define IN_EXPERIMENTAL(i) (((u_int32_t)(i) & 0xf0000000) == 0xf0000000)
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#define IN_BADCLASS(i) (((u_int32_t)(i) & 0xf0000000) == 0xf0000000)
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#define INADDR_ANY (u_int32_t)0x00000000
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#define INADDR_LOOPBACK (u_int32_t)0x7f000001
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#define INADDR_BROADCAST (u_int32_t)0xffffffff /* must be masked */
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#ifndef KERNEL
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#define INADDR_NONE 0xffffffff /* -1 return */
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#endif
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#define INADDR_UNSPEC_GROUP (u_int32_t)0xe0000000 /* 224.0.0.0 */
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#define INADDR_ALLHOSTS_GROUP (u_int32_t)0xe0000001 /* 224.0.0.1 */
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#define INADDR_ALLRTRS_GROUP (u_int32_t)0xe0000002 /* 224.0.0.2 */
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#define INADDR_MAX_LOCAL_GROUP (u_int32_t)0xe00000ff /* 224.0.0.255 */
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#define IN_LOOPBACKNET 127 /* official! */
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/*
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* Socket address, internet style.
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*/
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struct sockaddr_in {
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u_char sin_len;
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u_char sin_family;
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u_short sin_port;
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struct in_addr sin_addr;
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char sin_zero[8];
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};
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/*
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* Structure used to describe IP options.
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* Used to store options internally, to pass them to a process,
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* or to restore options retrieved earlier.
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* The ip_dst is used for the first-hop gateway when using a source route
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* (this gets put into the header proper).
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*/
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struct ip_opts {
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struct in_addr ip_dst; /* first hop, 0 w/o src rt */
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char ip_opts[40]; /* actually variable in size */
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};
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/*
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* Options for use with [gs]etsockopt at the IP level.
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* First word of comment is data type; bool is stored in int.
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*/
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#define IP_OPTIONS 1 /* buf/ip_opts; set/get IP options */
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#define IP_HDRINCL 2 /* int; header is included with data */
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#define IP_TOS 3 /* int; IP type of service and preced. */
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#define IP_TTL 4 /* int; IP time to live */
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#define IP_RECVOPTS 5 /* bool; receive all IP opts w/dgram */
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#define IP_RECVRETOPTS 6 /* bool; receive IP opts for response */
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#define IP_RECVDSTADDR 7 /* bool; receive IP dst addr w/dgram */
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#define IP_RETOPTS 8 /* ip_opts; set/get IP options */
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#define IP_MULTICAST_IF 9 /* u_char; set/get IP multicast i/f */
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#define IP_MULTICAST_TTL 10 /* u_char; set/get IP multicast ttl */
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#define IP_MULTICAST_LOOP 11 /* u_char; set/get IP multicast loopback */
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#define IP_ADD_MEMBERSHIP 12 /* ip_mreq; add an IP group membership */
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#define IP_DROP_MEMBERSHIP 13 /* ip_mreq; drop an IP group membership */
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#define IP_MULTICAST_VIF 14 /* set/get IP mcast virt. iface */
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#define IP_RSVP_ON 15 /* enable RSVP in kernel */
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#define IP_RSVP_OFF 16 /* disable RSVP in kernel */
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#define IP_RSVP_VIF_ON 17 /* set RSVP per-vif socket */
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#define IP_RSVP_VIF_OFF 18 /* unset RSVP per-vif socket */
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#define IP_PORTRANGE 19 /* int; range to choose for unspec port */
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#define IP_RECVIF 20 /* bool; receive reception if w/dgram */
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#define IP_FW_ADD 50 /* add a firewall rule to chain */
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#define IP_FW_DEL 51 /* delete a firewall rule from chain */
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#define IP_FW_FLUSH 52 /* flush firewall rule chain */
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#define IP_FW_ZERO 53 /* clear single/all firewall counter(s) */
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#define IP_FW_GET 54 /* get entire firewall rule chain */
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#define IP_DUMMYNET_CONFIGURE 60 /* add/configure a dummynet pipe */
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#define IP_DUMMYNET_DEL 61 /* delete a dummynet pipe from chain */
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#define IP_DUMMYNET_FLUSH 62 /* flush dummynet */
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#define IP_DUMMYNET_GET 64 /* get entire dummynet pipes */
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/*
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* Defaults and limits for options
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*/
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#define IP_DEFAULT_MULTICAST_TTL 1 /* normally limit m'casts to 1 hop */
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#define IP_DEFAULT_MULTICAST_LOOP 1 /* normally hear sends if a member */
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#define IP_MAX_MEMBERSHIPS 20 /* per socket */
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/*
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* Argument structure for IP_ADD_MEMBERSHIP and IP_DROP_MEMBERSHIP.
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*/
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struct ip_mreq {
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struct in_addr imr_multiaddr; /* IP multicast address of group */
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struct in_addr imr_interface; /* local IP address of interface */
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};
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/*
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* Argument for IP_PORTRANGE:
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* - which range to search when port is unspecified at bind() or connect()
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*/
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#define IP_PORTRANGE_DEFAULT 0 /* default range */
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#define IP_PORTRANGE_HIGH 1 /* "high" - request firewall bypass */
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#define IP_PORTRANGE_LOW 2 /* "low" - vouchsafe security */
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/*
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* Definitions for inet sysctl operations.
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*
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* Third level is protocol number.
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* Fourth level is desired variable within that protocol.
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*/
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#define IPPROTO_MAXID (IPPROTO_IDP + 1) /* don't list to IPPROTO_MAX */
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#define CTL_IPPROTO_NAMES { \
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{ "ip", CTLTYPE_NODE }, \
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{ "icmp", CTLTYPE_NODE }, \
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{ "igmp", CTLTYPE_NODE }, \
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{ "ggp", CTLTYPE_NODE }, \
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{ 0, 0 }, \
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{ 0, 0 }, \
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{ "tcp", CTLTYPE_NODE }, \
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{ 0, 0 }, \
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{ "egp", CTLTYPE_NODE }, \
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{ 0, 0 }, \
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{ 0, 0 }, \
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{ 0, 0 }, \
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{ "pup", CTLTYPE_NODE }, \
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{ 0, 0 }, \
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{ 0, 0 }, \
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{ 0, 0 }, \
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{ 0, 0 }, \
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{ "udp", CTLTYPE_NODE }, \
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{ 0, 0 }, \
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{ 0, 0 }, \
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{ 0, 0 }, \
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{ 0, 0 }, \
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{ "idp", CTLTYPE_NODE }, \
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}
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/*
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* Names for IP sysctl objects
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*/
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#define IPCTL_FORWARDING 1 /* act as router */
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#define IPCTL_SENDREDIRECTS 2 /* may send redirects when forwarding */
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#define IPCTL_DEFTTL 3 /* default TTL */
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#ifdef notyet
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#define IPCTL_DEFMTU 4 /* default MTU */
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#endif
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#define IPCTL_RTEXPIRE 5 /* cloned route expiration time */
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#define IPCTL_RTMINEXPIRE 6 /* min value for expiration time */
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#define IPCTL_RTMAXCACHE 7 /* trigger level for dynamic expire */
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#define IPCTL_SOURCEROUTE 8 /* may perform source routes */
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#define IPCTL_DIRECTEDBROADCAST 9 /* may re-broadcast received packets */
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#define IPCTL_INTRQMAXLEN 10 /* max length of netisr queue */
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#define IPCTL_INTRQDROPS 11 /* number of netisr q drops */
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#define IPCTL_STATS 12 /* ipstat structure */
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#define IPCTL_ACCEPTSOURCEROUTE 13 /* may accept source routed packets */
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#define IPCTL_FASTFORWARDING 14 /* use fast IP forwarding code */
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#define IPCTL_MAXID 15
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#define IPCTL_NAMES { \
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{ 0, 0 }, \
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{ "forwarding", CTLTYPE_INT }, \
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{ "redirect", CTLTYPE_INT }, \
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{ "ttl", CTLTYPE_INT }, \
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{ "mtu", CTLTYPE_INT }, \
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{ "rtexpire", CTLTYPE_INT }, \
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{ "rtminexpire", CTLTYPE_INT }, \
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{ "rtmaxcache", CTLTYPE_INT }, \
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{ "sourceroute", CTLTYPE_INT }, \
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{ "directed-broadcast", CTLTYPE_INT }, \
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{ "intr-queue-maxlen", CTLTYPE_INT }, \
|
|
{ "intr-queue-drops", CTLTYPE_INT }, \
|
|
{ "stats", CTLTYPE_STRUCT }, \
|
|
{ "accept_sourceroute", CTLTYPE_INT }, \
|
|
{ "fastforwarding", CTLTYPE_INT }, \
|
|
}
|
|
|
|
|
|
#ifdef KERNEL
|
|
struct ifnet; struct mbuf; /* forward declarations for Standard C */
|
|
|
|
int in_broadcast __P((struct in_addr, struct ifnet *));
|
|
int in_canforward __P((struct in_addr));
|
|
int in_cksum __P((struct mbuf *, int));
|
|
int in_localaddr __P((struct in_addr));
|
|
char *inet_ntoa __P((struct in_addr)); /* in libkern */
|
|
|
|
#endif /* KERNEL */
|
|
|
|
#endif
|