將網卡設置為混砸模式

时间：2010-09-07 来源：xhb8413

将网卡设置为混砸模式

转自：www.cublog.cn/u3/104357/showart_2151020.html

#include sys/types.h>
#include stdio.h>
#include unistd.h>
#include sys/socket.h>
#include netinet/in.h>
#include arpa/inet.h>
#include errno.h>
#include linux/if_ether.h>
#include net/if.h>
#include sys/ioctl.h>
#include string.h>
int do_promisc()
{
  int f, s;
  struct ifreq ifr;

  if ((f = socket(AF_INET, SOCK_PACKET, htons(ETH_P_IP)))  0)
return -1;
  strcpy(ifr.ifr_name, "eth0");

  if ((s = ioctl(f, SIOCGIFFLAGS, &ifr))  0)
{
   close(f);
   return-1;
}

ifr.ifr_flags |= IFF_PROMISC;
if ((s = ioctl(f, SIOCSIFFLAGS, &ifr))  0)
{
   return -1;
}
  printf("Setting interface ::: %s ::: to promisc\n\n", ifr.ifr_name);

  return 0;
}

int main()
{
  do_promisc();
  return 0;
}
[root@mip-123456 ioctl]# ifconfig eth0
eth0    Link encap:Ethernet  HWaddr 00:22:68:3C:9C:F0
      inet addr:172.24.149.212  Bcast:172.24.149.255  Mask:255.255.255.0
      inet6 addr: fe80::222:68ff:fe3c:9cf0/64 Scope:Link
      UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
      RX packets:3643 errors:0 dropped:0 overruns:0 frame:0
      TX packets:6629 errors:0 dropped:0 overruns:0 carrier:0
      collisions:0 txqueuelen:1000
      RX bytes:6253468 (5.9 MiB)  TX bytes:2379136 (2.2 MiB)
      Interrupt:233 Base address:0xa000
[root@mip-123456 ioctl]# ./promisc
Setting interface ::: eth0 ::: to promisc
[root@mip-123456 ioctl]# ifconfig eth0
eth0    Link encap:Ethernet  HWaddr 00:22:68:3C:9C:F0
      inet addr:172.24.149.212  Bcast:172.24.149.255  Mask:255.255.255.0
      inet6 addr: fe80::222:68ff:fe3c:9cf0/64 Scope:Link
      UP BROADCAST RUNNING PROMISC MULTICAST  MTU:1500  Metric:1
      RX packets:3653 errors:0 dropped:0 overruns:0 frame:0
      TX packets:6630 errors:0 dropped:0 overruns:0 carrier:0
      collisions:0 txqueuelen:1000
      RX bytes:6255432 (5.9 MiB)  TX bytes:2379200 (2.2 MiB)
      Interrupt:233 Base address:0xa000
其实可以直接ifconfig eth0 promisc 设置混杂
　　　　　　ifconfig eth0 -promisc　取消混杂

相关阅读更多 +