I am running slackware-current and I have tcpdump-4.1.1-i486-1.txz installed. If I remember right libpcap used to be part of tcpdump, but since recently i cannot find it in my system anymore! Tools like nmap give me the error message:
"error while loading shared libraries: libpcap.so.1: cannot open shared object file: No such file or directory"
I am trying to install libpcap and tcpdump, but even if I have already installed Flex, as the terminal tells me to do. What else could I do?
Code:
configure: error: Your operating system's lex is insufficient to compile libpcap. Flex is a lex replacement that has many advantages, including being able to compile libpcap. For more information, see [URL].
I am trying to install Libpcap version 1.0.0 on Fedora 9. During 'make, i get the following error:
"/usr/bin/install: cannot stat `libpcap.so.1.0.0': No such file or directory
make: *** [install] Error 1"
These days i try make a simple sniffer for a embedded system. and it need the function of dump all the packets into a file, which can be read by wireshark..etc. First i copy a code called simplesniffer.c from the Internet,and and now I want to add the dumpfile funtion to it. i find some problems.Quote:
/* Come from ---- http://blog.chinaunix.net/u/24474/showart_226419.html */
/* simplesniffer.c */
#include <stdio.h>
[code]...
I use libpcap to write a program to detect network device in Ubuntu but not sucess. The result is no suitable device found. How many reasons are there for that? The code i used is the main user page.
[code]
#define HAVE_REMOTE
#define WPCAP
#include <pcap.h>
#include <stdlib.h>
#include <sys/socket.h>
[Code]....
I am running Ubuntu Hardy Heron. Trying to configure a ax25 packet software to connect to the internet by way of a port called tun0 that I've created within the software. I can connect within the LAN but not outside. If I execute tcpdump while the tun0 is up, I first receive the message, "WARNING: arptype 65534 not supported by libpcap - falling back to cooked socket."Question: Does this warning relate to my connectivity issue and if so, how can I 'fix' the problem?
View 1 Replies View Relatedwe want to enhance the current libpcap version 1.1.x to provide timestamp in nanosecond resolution.
While searching related to same, we found that enhanced libpcap requires x64 architecture.
Is that so?
Do we need 64-bit architecture for using enhanced libpcap for nanosecond timestamping ?
I am trying to install libpcap version 1 on my centos 5.5 (which supply libpcap 0.9.4 as built in). I need libpcap>=1.0 to install snort 2.9. I tried to install by downloading source code from tcpdump.org but failed to update libpcap-0.9.4 by libpcap-1.0.0.
View 4 Replies View RelatedHow can I send and receive packets using libpcap, reply as early as possible.
View 1 Replies View Relatedi've been trying to "./configure" the bandwitdhd package. When i do it i get :
configure: error: Bandwidthd requires but cannot find libpcap
I have installed the libpcap and libpcap-devel:
linux-1a6o:/home/alex/bandwidthd-2.0.1 # locate libpcap
/alex/Win32/Prj/libpcap.dsp
/alex/Win32/Prj/libpcap.dsw
/usr/lib/libpcap.a
[Code]....
I'm running Ubuntu 10.04.1 and am trying to get packet capturing working for my Bluetooth dongle using hcidump.From what I've read, libpcap must be compiled to enable Bluetooth sniffing and given that hcidump isn't finding a single packet, I'm guessing the version Ubuntu has installed for me isn't compiled with bluetooth support.So I downloaded a newer version of libpcap and installed the bluez header files. Configured libpcap and it gave a "Yes" for bluetooth support. It is now installed and sitting in /usr/local/lib/. Now I'm trying to compile hcidump to use this lib rather than the system default but I can't figure out how...I've read that GCC can be passed the -lpcap flag to set the path but I haven't figured out how to do this.
View 1 Replies View RelatedFor compiling ArpON on my server the cmake command says 'libpcap not found' when a newer version libpcap-1.0.0-5.20091201git117cb5.fc13.i686.rpm is already exiting which I am unable to erase as other rpms depend on it.
View 5 Replies View RelatedHow to get manual of tcpdump?
View 2 Replies View RelatedI am trying to create a dump log using tcpdump. I want display the top 10 ip addresses sorted numerically showing how many times the ips are hitting the server. I'm getting frustrated because It's not working how I'd like it to.
View 1 Replies View RelatedI have configured NFS Server on CentOS 5.2 with an IBM Web Server(AIX). The IBM Web Server can upload all data onto NFS Server. Now, today i was having slow response on IBM Web Server & by measuring the NFS, I found below error while running "tcpdump" command. I have ran "tcpdump" command on NFS Server.
tcpdump -n -i eth1 | grep 2049
18:36:37.237451 IP 10.100.19.241.2049 > 10.100.19.88.1758143293: reply ok 1448 read [|nfs]
18:36:37.237476 IP 10.100.19.241.2049 > 10.100.19.88.539981409: reply ERR 1448
18:36:37.237481 IP 10.100.19.241.2049 > 10.100.19.88.796287348: reply ERR 1448
18:36:37.237488 IP 10.100.19.241.2049 > 10.100.19.88.1986098295: reply ERR 1448
18:36:37.237566 IP 10.100.19.241.2049 > 10.100.19.88.539762736: reply ERR 1448 .....
18:36:37.238263 IP 10.100.19.241.2049 > 10.100.19.88.1869440302: reply ERR 1448
16133 packets captured
23339 packets received by filter
7100 packets dropped by kernel
10.100.18.241 is the IP of NFS Server & 10.100.19.88 IP belongs to IBM Web Server.
Is there a way to do multiple interfaces in tcpdump? I have found that when using "-i any", not all packets are captured (compared to "-i eth0" on a machine with only one interface). I need to monitor traffic on some machines with as many as 6 interfaces, and get these packets that "-i any" misses. When I give the "-i" option multiple times, it seems to only use the last one.
View 3 Replies View RelatedI'm trying to capture packets to a file with the -w option but the file is empty yet if I use the '-w -' option to put data on stdout I see plenty of captured packets.I'm using CentOS 5.5 x86
Code:
[root@server ~]# tcpdump -v -i eth0 -w dump -s0
tcpdump: listening on eth0, link-type EN10MB (Ethernet), capture size 65535 bytes
[code]....
I am trying to analyze the output of tcpdump, but I am unable to figure out what the output is. as I think that the security my computer would be compromised by this output.
View 2 Replies View RelatedWhen attempting to run a tcdump in the background (IPSO) with the following command:
I get the message:
However the command runs fine without the '&' at the end of the line are there syntax restrictions in using the '&' flag?
I looked and have tcpdump installed on ubuntu 10.04 lts I can do a tcpdump --help and it gives the commands.I get no device found when I do tcpdump from the terminal window.my Ubuntu is having trouble looking up domains it just sits there and hangs looking up google.comI'm on a ATT 3mb DSL dry line running an asus netbook and a biostar via mobo desktop they both have trouble looking up domains right out of the DSL modem.I would try to set the DNS in ubuntu but I don't know how to do that without knowing the gateway and such. I have to get the IP of the computer, the netmask, the gateway, and the DNS for the manual setup.
View 3 Replies View RelatedI was wondering how one could set up tcpdump to run in the background, dumping all output to a file until I terminate the process.Here is the dilema... I SSH into the box that will be listening (using tcpdump)...
ssh> sudo tcpdump -i eth0 > dump_file
yadda yadda...
then if I exit my ssh session, tcpdump closes.
If I do a...
ssh> sudo tcpdump -i eth0 > dump_file &
[1] 12938
yadda yadda.
I need to start a tcpdump, and then download a file by FTP. I can't understand any way of achieving this in the tcpdump man file.
View 1 Replies View RelatedI'm trying to capture traffic between two machines, A and B. I would like to make sure that the traffic I capture with tcpdump is between eth1 on the local machine and eth0 on the remote machine. As I understand it, the -i flag specifies the local machine interface - but how to set the remote one?
View 3 Replies View Relatedwhen i send any packet to anu destination and want to see he mac address of source and destination i am using the command tcpdump -qec1 but rather then getting the mac address of source and destination each time i am getting mac address of the system which is broadcasting. will anybody tell me how can i get source and destination mac address even if any other packet is also being broadcast to my network.
View 1 Replies View RelatedI would like to set up tcpdump to rotate log file every 1 hour and retain files for the lat 14 days but I don't think any combination of -C and -W would allow me to do that (Atleast I haven't been able to figure it out), so I am trying to rotate the files every X number of MB and retain the last 20 files. This seems to be fairly simple with the '-C X -W 20' option but I am having some trouble in customizing the names of the log files. I have tried '-w capture-$(date +%Y-%M-%d-%H:%M-)' thinking that each file would start with the current date and time but all files are using the date and time when the capture was started so the only difference is the number at the end (which is done by -W). if I can customize the names of the file so that it has the date and time when the capture in started. In fact if I can do that, I dont need the numbers that '-W' appends at the end but I dont know how to get rid of them.
View 4 Replies View RelatedI'm running NetWare SLES 10 sp3 with OES2 sp2. I was working with the folks at Novell to resolve an iPrint Print Manager problem.
During the process they wanted to perform a packet capture using tcpdump. While logged in as the root user the error no suitable device was found, and I received no data at all. This server is running on a VMWare Center. On other SLES 10 sp3 systems (residing on that same VMWre Center), tcpdump captures packets just fine. I inherited all of these servers, so I wasn't here during the initial build, but I'd make the guess that they were configured similarly. On a Server that I built recently, tcpdump works fine. On two of my Servers it does not, and gives the mentioned error.
It's not that big a deal, otherwise the Servers are communicating and working just fine. But, I'd like to get it working just because it's supposed to work. Students are off for the summer, so I have time to play.
Does gzip have the capability to decode gzipped traffic? I have been beating my head against the wall with this issue. What I'm trying to do is capture traffic between a web server and clients, and I've got it set up where it's redirected to a file for ease of grepping, however it's seemingly incapable of decoding gzipped encoding. I know I can do this with tshark, I'm curious as to whether tcpdump has this capability (i.e. only using tcpdump, and not some additional tool like tcpshow or what-not).
I can't find much on this issue in the man page for tcpdump, but it is fairly lengthy, so it's possible that I missed something, but I don't see that as especially likely.
The only window that's open is the terminal running this command, no pidgin, skype, samba, torrent or anything I can think of is using the network yet there is ***** load of output from tcpdump. I was hoping to use this to check where certain applications connect to and what messages they send but when I'm doing nothing there is already more output than I can go through. Running tcpdump for less than 10 seconds gives me the following output:
Code:
16:13:22.015683 IP ns.hihkptt.net.cn.domain > desk.local.56598: 46887 1/2/2 (166)
16:13:22.016251 IP ns.hihkptt.net.cn.domain > desk.local.60099: 21168 1/2/2 (166)
16:13:22.016743 IP ns.hihkptt.net.cn.domain > desk.local.42325: 50346 1/2/2 (166)
16:13:22.034733 IP ns.hihkptt.net.cn.domain > desk.local.41441: 63658 1/2/0 (134)
16:13:22.035215 IP ns.hihkptt.net.cn.domain > desk.local.42865: 37537 1/2/0 (134)
16:13:22.036124 IP ns.hihkptt.net.cn.domain > desk.local.35006: 7520 1/2/0 (134)
16:13:22.036569 IP ns.hihkptt.net.cn.domain > desk.local.38480: 51322 1/2/0 (134)
16:13:22.066006 ARP, Reply 192.168.0.1 is-at 00:b0:0c:02:60:9c (oui Unknown), length 46 .....
We are having a Linux box with Tcpdump continuously running on it to monitor bunch of sources. Separate Tcpdump process runs in a background for each host for monitoring traffic. I use -w option with it to save the capture in the pcap format to analyze it later. Now what I need is, if the Linux machine gets rebooted amidst of its packet capturing activity, I want tcpdump to automatically start the process again for every host without overwriting previous captures.
Remember: Without overwriting previous captures . . .
Basically, I will be keeping all the tcpdump commands in the shell script and will load the script at startup during the linux boot. Is there any way to achieve this case, where by on rebooting, Tcpdump does not overwrite previous captures?
I am trying dump some packets using tcpdump and it does not seem to be working.
System is fedora12
TCPDUMP v4.1
Libpcap v1.0
I even rolled my own,
TCPDUMP v4.1.1
libpcap v1.1.1