usrnatstartup.c

来自「nat PNE 3.3 source code, running at more」· C语言 代码 · 共 143 行

/* usrNatStartup.c - initialize and configure NAT */

/* Copyright 2005 Wind River Systems, Inc. */

/*
modification history
--------------------
01a,25mar05,zhu  written
*/

/*
DESCRIPTION
This file supplies sample code to configure and initialize NAT.

NOMANUAL
*/

/* includes */

#include "vxWorks.h"
#include "stdio.h"
#include "wrn/coreip/ipProto.h"
#include "wrn/coreip/ifLib.h"
#include "wrn/nat/nat_api.h"
#include "wrn/nat/natExtCalls.h"
#include "wrn/nat/natMgmt.h"

extern void usrNetNatInit(char*, char*);

/******************************************************************************
*
* usrNatStartup - NAT initialization routine.
*
* This routine initializes NAT. 
*
* This assumes:
* 1. There are two interfaces fei0, fei1 on the target.
* 2. fei0 is attached to the IP stack, its address is set, and it is the 
*    global interface.
* 3. fei1 is not attached to the IP stack, and it is the local interface.
* 4. NAT Configuration specified in
*    $WIND_BASE/target/config/comps/src/net/usrNetNatCfg.c
*    is the desired configuration
*
* NOTE: This is provided only as an example
*
* RETURNS: N/A
*
* NOMANUAL
*/
void usrNatStartup(void)
    {
    /* Attach the local interface fei1 and set its address */

    ipAttach(1, "fei");
    ifMaskSet("fei1", 0xffffff00);
    ifAddrSet("fei1", "10.0.1.1");

    /* 
     * Initialize NAT 
     *
     * This assumes: 
     * (a) fei0 is the global interface
     * (b) fei1 is the local interface
     */

    usrNetNatInit("fei,0", "fei,1");

    /* 
     * (Optional) Initialize the NAT ALGs
     */

    /* FTP ALG: */
    /*
    if (natFtpInit(21) != OK)
        printf("NAT FTP ALG initialization failed!\n");
     */

    /* H323 ALG: */
    /*
    if (natH323Init(1720) != OK) 
        printf("NAT H323 ALG initialization failed!\n"); 
     */

    /* IPSec passthrough ALG: */
    /*
    if (natIPSecPTInit(500) != OK) 
        printf("NAT IPSec passthrough ALG initialization failed!\n"); 
     */

    /* PPTP passthrough ALG: */
    /*
    if (natPPTPPTInit() != OK)
        printf("NAT PPTP passthrough ALG initialization failed!\n");
     */

    /* SIP ALG: */
    /*
    if (natSipInit() != OK)
        printf("NAT SIP passthrough ALG initialization failed!\n");
     */

    /* 
     * (Optional) Set Port Triggers
     * 
     * This assumes: An outbound TCP packet destined to ports 23 thru 24
     * triggers the global ports 19 thru 21 open for inbound UDP connections.
     * The triggered inbound UDP connections should be terminated if the 
     * trigger times out. 
     */
    /*
    if (natPortTriggerEntryAction(NAT_PORT_TRIGGER_ADD,
                                  PORT_TRIGGER_STRICT,
                                  IPPROTO_TCP, 23, 24,
                                  IPPROTO_UDP, 19, 21) != OK)
        printf("NAT Port Trigger Add failed!\n");
     */

    /* 
     * (Optional) Set the DMZ Host
     * 
     * This assumes: The local host 10.0.1.2 serves as the DMZ Host 
     */
    /*
    if (natDMZHostSet("10.0.1.2") != OK)
        printf("NAT DMZ Host Set failed!\n");
     */
 
    /* (Optional) NAT MIB: */
    /*
    natMgmtInit();
    if (m2NatTreeAdd () == ERROR) 
        printf("Unable to add MIB fragment for NAT to tree!\n");
     */

    /* (Optional) NAT show routine */
    /*
    natShow();
     */

    printf("NAT configuration and initialization complete!\n");
    }