Raw Socket Programming - Efficient Packet Sniffer Post: 302826141

9 More Discussions You Might Find Interesting

1. Programming

Getting an ACK for RAW SYN packet

Hi, I'm trying to create a RAW TCP SYN packet and send it from one Linux machine to another. I know the packet I have created is well formed and is received by the peer. Now what I want is to get an ACK for my SYN. I want the peer's Network protocol stack to send me an ACK for that. I know...

2. Linux

Kernel programming: packet divertion

Hi All, Not sure if this is the right place to ask, so please tell me where is appropriate... Anyway, here is the problem. I'm a bit new to kernel programming, so nothing works :confused: . I need to intercept cetrtain ethernet packets from Host1("eth0") to Host2("eth1") and send them to...

3. Programming

sendto in packet socket

Hi, I have created a packet socket (PF_PACKET, SOCK_DGRAM, htons(ETH_P_ARP)) to catch the ARP packets coming to my machine and send appropriate reply. Now I'm able to recieve the ARP requests using recvfrom but don't know how to send the reply. I looked into man page but I'm not able to...

4. Programming

RAW socket and CONFIG_FILTER

Hi, Im doin a project on DHCp client-server setup. i have to use RAW sockets in the code for this. The call PF_PACKET, SOCK_RAW as the first two arguments. The code compiles but when i try to start the Dhcp client, I get an error saying "Make sure CONFIG_PACKET and CONFIG_FILTER is enabled". I...

5. IP Networking

Changing the source IP?? using RAW Socket.

Hi There, Suppoose we have configured logical Interface 2.2.2.2 on a server with Primary IP 1.1.1.1. Now when I am sending a packet from this server, is it possible to make receiver assume that this packet has come from IP 2.2.2.2 and not 1.1.1.1 I think it is possibl using RAW sockets??? but...

6. UNIX for Advanced & Expert Users

Why root permissions required for creating of RAW Socket

To create RAW socket in Unix/Linux why should one have root permissions? Any other work around to create raw sockets in Unix/Linux using a normal login id? Since I don't have super user credentials and I want to create RAW sockets. Let me know if you are aware of any work around.

7. Programming

Writing a Packet sniffer

Hi, I want to write a packet sniffer in C without using libpcap. Can anyone suggest me how to begin writing it? Any tutorials or books? Thanks in advance!

8. IP Networking

Raw Sockets Programming

Hi everybody!! I'm studding at the university raw sockets, but i can't find a good place to read about them... Does anybody now where i can find some information??? I've been goggling a lot but couldn't find nothing useful, just man pages... by the way, I'm programming under Linux... Bye!

9. Programming

Receiving broadcast packets using packet socket

Hello I try to send DHCP RENEW packets to the network and receive the responses. I broadcast the packet and I can see that it's successfully sent using Wireshark. But I have difficulties receiving the responses.I use packet sockets to catch the packets. I can see that there are responses to my...

LEARN ABOUT REDHAT

aecho

AECHO(1)						      General Commands Manual							  AECHO(1)

NAME

       aecho - send AppleTalk Echo Protocol packets to network hosts

SYNOPSIS

       aecho [ -c count ] ( address | nbpname )

DESCRIPTION

       aecho  repeatedly  sends  an  Apple  Echo Protocol (AEP) packet to the host specified by the given AppleTalk address or nbpname and reports
       whether a reply was received.  Requests are sent at the rate of one per second.

       address is parsed by atalk_aton(3).  nbpname is parsed by nbp_name(3).  The nbp type defaults to `Workstation'.

       When aecho is terminated, it reports the number of packets sent, the number of responses received, and the percentage of packets lost.	If
       any responses were received, the minimum, average, and maximum round trip times are reported.

EXAMPLE

       Check to see if a particular host is up and responding to AEP packets:

		   example% aecho bloodsport
		   11 bytes from 8195.13: aep_seq=0. time=10. ms
		   11 bytes from 8195.13: aep_seq=1. time=10. ms
		   11 bytes from 8195.13: aep_seq=2. time=10. ms
		   11 bytes from 8195.13: aep_seq=3. time=10. ms
		   11 bytes from 8195.13: aep_seq=4. time=10. ms
		   11 bytes from 8195.13: aep_seq=5. time=9. ms
		   ^C
		   ----8195.13 AEP Statistics----
		   6 packets sent, 6 packets received, 0% packet loss
		   round-trip (ms)  min/avg/max = 9/9/10

OPTIONS

       -c count
	      Stop after count packets.

SEE ALSO

       ping(1), atalk_aton(3), nbp_name(3), atalkd(8).

netatalk 1.2							    17 Dec 1991 							  AECHO(1)