Networking :: Make Opnet Guru To Get Data From Tcpdump Tool (command)?
Jan 15, 2011
I have a WAN network that i need to do some analysis on, for the traffic flows. I did lots of googling to figure out what useful tool to collect the packet informations.I found this site http://scrutin.wordpress.com/2007/04...-tcpdump/witch i made great use of to recognize the tcpdum tool.
I also have a network simulator on windows platform wich is Opnet Guru, (by the way.. is there a linux version for this simulator?).
MY QUESTION IS::
How can i feed the Opnet Guru with the flows data collected with the
Code:
tcpdumpwith its different options?
NOTE: in the Opnet Guru invironment there is an object called the profile that is being used to customize and genarate data flows with the desired characteristics to simulate the real flows. So i need to feed the Opnet with the fresh data collected with the tcpdump tool (command) instead of using the built-in profile.
View 1 Replies
ADVERTISEMENT
Jan 11, 2011
I have a WAN network that i need to do some analysis on, for the traffic flows. I did lots of googling to figure out what useful tool to collect the packet informations.I found this site [URL]..witch i made great use of to recognize the tcpdum tool. I also have a network simulator on windows platform wich is Opnet Guru, (by the way.. is there a linux version for this simulator?).
MY QUESTION IS: How can i feed the Opnet Guru with the flows data collected with the
Code:
tcpdump
with its different options?
NOTE: in the Opnet Guru invironment there is an object called the profile that is beeing used to customize and genarate data flows with the desired characteristics to simulate the real flows. So i need to feed the Opnet with the fresh data collected with the tcpdump tool (command) instead of using the built-in profile.. i hope i was clear enough..
View 3 Replies
View Related
Oct 18, 2010
I'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]....
View 2 Replies
View Related
May 6, 2010
I have a need to make a rather odd filter in tcpdump- I would like to capture only all those packages on interface eth0, that are outgoing(in other words from IP 192.168.1.1, which is IP for eth0 in this computer) and doesn't have src MAC address 11:22:33:44:55:66. However, fallowing command says, that syntax is wrong:
Code:
tcpdump -n -p -i eth0 src host 192.168.1.1 ether src not 11:22:33:44:55:66
Is this possible? If yes, then what is the correct command?
View 3 Replies
View Related
Aug 31, 2010
Is there any tool similar to NetMonitor for Ubuntu, which can be used to monitor the data usage.
View 1 Replies
View Related
Dec 10, 2009
when 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 Related
May 19, 2010
I've read up some of the posts on this forum, but can't seem to find an answer. I have a web service within an Apache Tomcat instance installed on a Redhat linux server. I only have shell access to the server, and need to monitor outbound network traffic from my web service. Is there a unix command that will allow me to monitor all outbound traffic? I'm thinking fiddler, but a unix version? I've heard of things like ntop and iptraf, but I don't think those will help me in this instance.
View 2 Replies
View Related
Jun 21, 2011
I would like to know the command lines for;
-detecting the wifi in my house without being connected to it
-getting ips/macaddress from the people connected to the wifi
View 2 Replies
View Related
Jul 23, 2010
I have a GuruPlug computer running Debian Lenny.
I put a perl script on it with the following shabang line.
#!/root/bin/perl -w
When I run the program from the command line I get the following message.
guru:~/bin$ ./ms_sync.pl
-bash: ./ms_sync.pl: /root/bin/perl: bad interpreter: Permission
denied
[Code]....
View 4 Replies
View Related
Dec 7, 2010
I 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 Related
Feb 16, 2011
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 Related
Apr 5, 2011
I'm trying to learn how to use foremost, a data recovery tool. I thought a nice place to start would be by attempting to recover a file from a test image. The foremost website links to this site which has a FAT Undelete Test #1 challenge. The challenge is to recover files from a 6 MB FAT disk image. I tried running this command. foremost -t all -i /home/<user>/Desktop/6mb.img -o /home/<user>/Desktop/output but all I got was a folder with an audit.txt file in it.
View 5 Replies
View Related
Apr 6, 2010
I 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 Related
May 27, 2010
I'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.
View 5 Replies
View Related
Jan 25, 2010
I deleted files on my linux drive that I shouldn't have. What is a good tool to use to recover these files that will:
Recover the various file types (txt, php etc)
Recover it as the original files names
TestDisk and PhotoRec almost do the trick, but the original filenames are not restored.
View 3 Replies
View Related
Nov 30, 2010
I'm looking for a tool similar to synctoy in linux. For those who dont know what synctoy does is... its a simple syncing application that allows you to copy your data between multiple hard drives and keeps all copies in sync with the latest data. I'm specifically looking for KDE based tool if KDE based is not available then my second preference will be for gtk based app.
View 2 Replies
View Related
Jul 28, 2010
I tried to recover deleted data using testdisk tool and now my partition table have some errors. Even though i have 3 partitions and 1 unallocated disk fdisk -l shows only 1 partition
Code:
vishnu@vishnu-laptop:~$ sudo fdisk -l
[sudo] password for vishnu:
WARNING: GPT (GUID Partition Table) detected on '/dev/sda'! The util fdisk doesn't support GPT. Use GNU Parted.
Disk /dev/sda: 320.1 GB, 320072933376 bytes
255 heads, 63 sectors/track, 38913 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x68000000
[Code]...
View 2 Replies
View Related
Jan 6, 2010
I've been looking for a good data integrity test tool for linux, but I'm having trouble finding one. Basically I'm looking for an application that will generate a heavy I/O load to a raw device and then perform some kind of data verification on the device. I my case the raw device will be md raid5 array.
View 1 Replies
View Related
Jan 24, 2011
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 .....
View 2 Replies
View Related
Nov 21, 2010
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
View 1 Replies
View Related
Feb 16, 2010
I have configured NFS Server on CentOS 5.2 with IBM Web Server,which is having AIX 5.3 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 on CentOS 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
[code]....
I have changed Network Card in CentOS. All LAN is on Gigabit Network. Also I have changed the Network Cable(Patch Cord). But,still no response.
View 3 Replies
View Related
Mar 9, 2011
For several days I have tried to create a new raid5 array, after accidently blowing up the old one.But it seems that the raid data was burned into the harddisks ineradicably. I keep seeing the raid data that was used for the old array. I have tried everything to remove the old data, even installed a new distro but still I see the old data.My last hope is to erase the disks with a lowlevel tool to make a clean start.
View 4 Replies
View Related
Apr 20, 2010
I want to know which backup tool is used in Linux to back up data from windows machine to linux machine, is amenda? Please guide me.
Also tell me where to download it from?
View 6 Replies
View Related
Nov 19, 2008
Is there a open-source data protection management tool that anyone knows about and/or can recommend?
View 1 Replies
View Related
Mar 30, 2011
I have a linux box with two interfaces: eth0 is a builtin and eth1 is a USB-LAN.
There is an IP configured on eth1.
eth0 is up but no IP is configured. This interface is used for sniffing with tcpdump.
The problem is that eth0 frequently stops receiving packets -- my tcpdump captures are empty, and if I look at the interface stats with ifconfig, I can see that no packets are received.
If I bounce the interface (ifconfig eth0 down; ifconfig eth0 up), it starts receiving packets again.
View 1 Replies
View Related
May 20, 2010
I am running a test to determine when packet drops occur. I'm using a Spirent TestCenter through a switch (necessary to aggregate Ethernet traffic from 5 ports to one optical link) to a server using a Myricom card.While running my test, if the input rate is below a certain value, ethtool does not report any drop (except dropped_multicast_filtered which is incrementing at a very slow rate). However, tcpdump reports X number of packets "dropped by kernel". Then if I increase the input rate, ethtool reports drops but "ifconfig eth2" does not. In fact, ifconfig doesn't seem to report any packet drops at all. Do they all measure packet drops at different "levels", i.e. ethtool at the NIC level, tcpdump at the kernel level etc?nd am I right to say that in the journey of an incoming packet, the NIC level is the "so-called" first level, then the kernel, then the user application? So any packet drop is likely to happen first at the NIC, then the kernel, then the user application? So if there is no packet drop at the NIC, but packet drop at the kernel, then the bottleneck is not at the NIC?
View 1 Replies
View Related
Feb 21, 2011
How to convert Tcpdump output file to a Pcap format? Is there such way?
This is what i mean:
tcpdump -i eth0 >> test.out
Now i want to convert test.out to Pcap so It's readable via Wireshark.
View 5 Replies
View Related
May 19, 2010
I have a question regarding packet drops. I am running a test to determine when packet drops occur. I'm using a Spirent TestCenter through a switch (necessary to aggregate Ethernet traffic from 5 ports to one optical link) to a server using a Myricom card. While running my test, if the input rate is below a certain value, ethtool does not report any drop (except dropped_multicast_filtered which is incrementing at a very slow rate). However, tcpdump reports X number of packets "dropped by kernel". Then if I increase the input rate, ethtool reports drops but "ifconfig eth2" does not.
In fact, ifconfig doesn't seem to report any packet drops at all. Do they all measure packet drops at different "levels", i.e. ethtool at the NIC level, tcpdump at the kernel level etc? And am I right to say that in the journey of an incoming packet, the NIC level is the "so-called" first level, then the kernel, then the user application? So any packet drop is likely to happen first at the NIC, then the kernel, then the user application? So if there is no packet drop at the NIC, but packet drop at the kernel, then the bottleneck is not at the NIC?
View 1 Replies
View Related
Feb 19, 2010
I have set the iptables INPUT policy to DROP. As I have expected tcpdump wasn't showing any packages... for a while. Suddenly it begun to show UDP syslog packages being sent by a remote host. It is conform with the configuration of syslog, but since the INPUT policy was set to DROP, with no exceptions, it is not conform with configuration of iptables. Why after setting INPUT policy to DROP, with no exceptions most of the packets recieved before are being dropped and some not, as tcpdump shows?
View 7 Replies
View Related
Aug 3, 2011
I tried to install ndiswrapper , but its showing error,while executing make command
make[1]: Leaving directory `/usr/src/linux-source-2.6.35.8'
make: *** [LINUX] Error 2
View 2 Replies
View Related
