9 More Discussions You Might Find Interesting
1. IP Networking
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. Cybersecurity
Hello everyone, so I'm getting this tcpdump, and it looks like..quite a mess... Can anyone decipher this? I can tell that one IP is requesting DNS info? but I'm having trouble finding out what some of the fields actually mean..
19:44:50.707637 IP 66.81.1.252.53 > 64.147.113.139.28638: 52313... (4 Replies)
Discussion started by: Lost in Cyberia
4 Replies
3. Debian
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. IP Networking
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
5. Cybersecurity
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
6. IP Networking
Hi, I got the following question regarding tcpdump and I would appreciate your help/feedback:
--Scenario
I am instructed to capture the network traffic by getting the tcpdump data/files of our network for every hour.
--Problem
Some of the connections are still open when the capture is done... (1 Reply)
Discussion started by: jinsunnyvale
1 Replies
7. Shell Programming and Scripting
I wrote a short BASH script to run tcpdump and save the output to a log file for when I'm away from my desk. The script runs fine normally, but fails to start in cron. Any ideas?
#!/bin/bash
today=`date +%Y%m%d`
tcpdump -i eth0 -s 1500 -w ${today}.cap &
exit (5 Replies)
Discussion started by: paulzeromi
5 Replies
8. UNIX for Dummies Questions & Answers
does anybody know what the -d -dd and -ddd options are used for ?
thanks (2 Replies)
Discussion started by: ant04
2 Replies
9. Programming
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
ovs-tcpundump(1) Open vSwitch Manual ovs-tcpundump(1)
NAME
ovs-tcpundump - convert ``tcpdump -xx'' output to hex strings
SYNOPSIS
ovs-tcpundump < file
Common options:
[-h | --help] [-V | --version]
DESCRIPTION
The ovs-tcpundump program reads tcpdump -xx output on stdin, looking for hexadecimal packet data, and dumps each Ethernet as a single hexa-
decimal string on stdout. This format is suitable for use with the ofproto/trace command supported by ovs-vswitchd(8) via ovs-appctl(8).
At least two -x or -X options must be given, otherwise the output will omit the Ethernet header, which prevents the output from being using
with ofproto/trace.
OPTIONS
-h, --help
Prints a brief help message to the console.
-V, --version
Prints version information to the console.
SEE ALSO
ovs-appctl(8), ovs-vswitchd(8), ovs-pcap(1), tcpdump(8), wireshark(8).
Open vSwitch December 2010 ovs-tcpundump(1)