udp.h

该程序类似于tcpdump软件

/**************************************************************************** 
** File: udp.h
**
** Author: Mike Borella
**
** Comments: Generic UDP header structure - an attempt at OS independence
**
*****************************************************************************/

#define L2TP_PORT 1701

#define DHCP_CLIENT_PORT 68
#define DHCP_SERVER_PORT 67
#define SIP_PORT 5060
#define RIP_PORT 520
#define ISAKMP_PORT 500

typedef struct _UDPHdr
{
  u_int16_t uh_src;
  u_int16_t uh_dst;
  u_int16_t uh_len;
  u_int16_t uh_chk;
} UDPHdr;

void dump_udp(u_char *, int);