08-01-2007
Dumping network packets
Hi,
My Solaris Workstation has got 4 NICS, out of which one of them(bge3) is unplugged from the rest of the external network & connected to other interface(bge1). The isolated NIC serves as a simulated Ethernet Interface for my application under development.
Now, I'd like to capture RAW packets flowing between bge1 & bge3.
Ethereal captured no packets, may be I'm wrong with my settings.
Heard that there are some utilities like pcapdump etc, could somebody explain how to use them?
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LEARN ABOUT LINUX
pcap_setdirection
PCAP_SETDIRECTION(3PCAP) PCAP_SETDIRECTION(3PCAP)
NAME
pcap_setdirection - set the direction for which packets will be captured
SYNOPSIS
#include <pcap/pcap.h>
int pcap_setdirection(pcap_t *p, pcap_direction_t d);
DESCRIPTION
pcap_setdirection() is used to specify a direction that packets will be captured. d is one of the constants PCAP_D_IN, PCAP_D_OUT or
PCAP_D_INOUT. PCAP_D_IN will only capture packets received by the device, PCAP_D_OUT will only capture packets sent by the device and
PCAP_D_INOUT will capture packets received by or sent by the device. PCAP_D_INOUT is the default setting if this function is not called.
pcap_setdirection() isn't necessarily fully supported on all platforms; some platforms might return an error for all values, and some other
platforms might not support PCAP_D_OUT.
This operation is not supported if a ``savefile'' is being read.
RETURN VALUE
pcap_setdirection() returns 0 on success and -1 on failure. If -1 is returned, pcap_geterr() or pcap_perror() may be called with p as an
argument to fetch or display the error text.
SEE ALSO
pcap(3PCAP), pcap_geterr(3PCAP)
5 April 2008 PCAP_SETDIRECTION(3PCAP)