tcpdump get packate, Application get the packete too?


 
Thread Tools Search this Thread
Top Forums Programming tcpdump get packate, Application get the packete too?
# 1  
Old 04-19-2003
tcpdump get packate, Application get the packete too?

1. use Digital Unix 4.0F
2. as we know, tcpdump can get network package. But does it
peek packates like MSG_PEEK flag in recvmsg() OR does it
get packetes from kernel processed or application processed?
Login or Register to Ask a Question

Previous Thread | Next Thread

9 More Discussions You Might Find Interesting

1. IP Networking

TCPdump

I've recently started learning to use TCPdump, and I find it pretty interesting. There's one thing I don't understand. When I tell it to capture packets on, say, the WiFi interface en1, it often captures packets sent or received by other hosts on the network. How can it do this? My... (3 Replies)
Discussion started by: Ultrix
3 Replies

2. UNIX for Dummies Questions & Answers

How to update tcpdump?

I would like to update tcpdump on my computer (CentOS 6.5) which is currently old. I download the zip file from TCPDUMP/LIBPCAP public repository already but I don't know how to update with this file. I have to delete tcpdump on my computer first? Would you please provide the step for me? (0 Replies)
Discussion started by: thsecmaniac
0 Replies

3. Debian

Tcpdump Help !

Hi. Need Help with TcpDump Trying to sniff associatio-request with tcpdump but when i run this tcpdump -i eth0 wlan subtype assoc-req i get this error can anyone help me with this error ? Thanks alot !!:) (1 Reply)
Discussion started by: SoulZB
1 Replies

4. Shell Programming and Scripting

TCPdump script

I'm new to the Unix/Linux world. I have taken classes and played with a few simple scripts but never had a real world application. Here is my problem. What I need to do is every 15min between 8am and 5pm, run tcpdump -s 2000 -w flowroute-0000.pcap where the "0000" is the current time. ... (4 Replies)
Discussion started by: Nasasdge
4 Replies

5. Linux

Capturing TCPDUMP

Hi, I want to capture TCPDUMP of traffic, I tried doing this but did not find success..can anyone plz correct it. # tcpdump -s0 -vv -w /home/osuresh/test_tcp_dump host 10.12.10.22 && port 161 bash: tcpdump: command not found # tcpdump -s0 -vv -w /home/osuresh/test_tcp_dump host... (5 Replies)
Discussion started by: sureshcisco
5 Replies

6. IP Networking

i would like to know about tcpdump

i would like to know about tcpdump i would like to use tcpdump to get information about these - Date - time - source hostname - source mac address - source ip address - destination ip address - see outbound only then i use command like this tcpdump -i le0 -n -q -tttt -e src net... (2 Replies)
Discussion started by: chamnanpol
2 Replies

7. Cybersecurity

i would like to know about tcpdump

i would like to know about tcpdump i would like to use tcpdump to get information about these - Date - time - source hostname - source mac address - source ip address - destination ip address - see outbound only then i use command like this tcpdump -i le0 -n -q -tttt -e src net... (0 Replies)
Discussion started by: chamnanpol
0 Replies

8. UNIX for Dummies Questions & Answers

tcpdump

does anybody know what the -d -dd and -ddd options are used for ? thanks (2 Replies)
Discussion started by: ant04
2 Replies

9. Programming

How To Use tcpdump

I have two net-card. one is 172.16.24.99(ENG) ,another is 172.16.25.99(ENG-B). Both masks is 255.255.255.0. I will monitor data on the tcp port 8055 in ENG, How do I set option of tcpdump command (2 Replies)
Discussion started by: chenhao_no1
2 Replies
Login or Register to Ask a Question
SURICATA(8)						      System Manager's Manual						       SURICATA(8)

NAME
suricata - Next Generation Intrusion Detection and Prevention Tool SYNOPSIS
suricata [options] DESCRIPTION
suricata is a network Intrusion Detection System (IDS). It is based on rules (and is fully compatible with snort rules) to detect a variety of attacks / probes by searching packet content. This new Engine supports Multi-Threading, Automatic Protocol Detection (IP, TCP, UDP, ICMP, HTTP, TLS, FTP and SMB), Gzip Decompression, Fast IP Matching and coming soon hardware acceleration on CUDA and OpenCL GPU cards. It supports acquiring packets through NFQUEUE, PCAP (live or offline) etc. OPTIONS
-c config_file Use configuration file config_file -i interface Sniff packets on interface. -r file Read the tcpdump-formatted file tcpdump-file. This will cause Suricata to read and process the file fed to it. This is useful for offline analysis. -q queue_id Sniff packets sent by the kernel through NFQUEUE. This allows running Suricata in inline mode (IPS) for packets captured by iptables using the NFQUEUE target. -s signatures Path to the signatures file. -l log_dir Path to the default log directory. -D Run as daemon --init-errors-fatal Enable fatal failure on signature init error. SEE ALSO
tcpdump(1), pcap(3). AUTHOR
suricata was written by the Open Information Security Foundation. This manual page was written by Pierre Chifflier <pollux@debian.org>, for the Debian project (and may be used by others). February 2010 SURICATA(8)