General :: What Programs Under Linux Can Capture Ethernet Traffic?
Apr 20, 2011What programs under Linux can capture ethernet traffic? And which ones from them are maintained and most comfortable?
View 4 RepliesWhat programs under Linux can capture ethernet traffic? And which ones from them are maintained and most comfortable?
View 4 RepliesI am looking for a solution for our LAN traffic monitoring and would like to use some opensource linux application. I have a linux box with two NIC cards and what I thought is the following: Our setup is as follows. Internet comes in through the router and into the firewall. From the firewall it goes into our switch and distributed among the workstations.
I have no access to the router or the firewall as they are centrally configured. I would like to place a device into the loop through which I could monitor the LAN traffic.
Can I put a linux box between the firewall and the switch and have all packets going through registered and logged? I have a proxy server (non transparent) and that captures some but not all. I would like to get all packets registered without interfering with the LAN etc.
What GUI Linux programs are there for finding files based upon their contents?
View 5 Replies View RelatedI would like to have all traffic from the ethernet connection out through the wireless (basically using the box as a router) however I am having some trouble doing this.
I have done this before on Windows however I am having some trouble doing this on linux, I have tried using Squid Proxy however I am having some trouble using configuring/using it.
I am using Yellow Dog Linux however I am willing to change to any other distro as long as it is compatable with PS3 (as this is what im using linux on)
I have a laptop connected to internet via wlan0. I also have eth0 interface and with it I share internet. I want to modify/filter all the traffic passing by the first laptop, something like this:
Code: Select all *---------------------------*
| LAPTOP 1 | *--------------* ?
|-----* *------* *----* | |
INTERNET<------>|wlan0|<-->|MY_APP|<-->|eth0|<---->|ANOTHER LAPTOP|
|-----* *------* *----| | |
*---------------------------* *--------------*
I know that in FreeBSD it is possible to use ipfw for that purpose, because it build-in into kernel. We set for example rule Code: Select allipfw add divert 2000 ip from any to 1.0.1.1
and we can use our own application to process those packets, reinject them forward etc. It will work also fast, because as I said, it build into kernel.
Is there any standart Linux-based solution to do the same? I found some info about netmap-ipfw. Is this a correct solution? Or I have to use for example IP-aliases and iptables to do that?
I need to process all the IP-packets, not only TCP/UDP/etc-protocol. Solution also must be very fast.
Currently I have a server which runs under centOS 5.6. It is dedicated to the VoIP application of my customer.I have a problem for which I have the solution but I didn't managed to achieve it.So, let me explain you the context.Here is the networking aspects of my environment
VoIP Provider_____Gateway_____________My server
ADSL Provider____(non pingable)
x.x.x.2 <====> A.A.A.1 <======> A.A.A.3
[code]....
I would like to be able to monitor which programs are allowed to access the internet, but a search for programs to do this has turned up nothing. Preferably, I would like a notification to come up every time an application uses the internet. Is there any (n00b friendly) software available to do that?
View 2 Replies View RelatedRecently I notice that when I'm connected to an vpn server (pptpd) and I'm using it as a default gateway my download and upload speed decreases almost to the half of the usual speed. I made a test using iptables in order to count how much GRE packets are generated (except the real traffic itself) in that way:
Code:
iptables -I INPUT -p gre -j ACCEPT
iptables -I OUTPUT -p gre -j ACCEPT
iptables -I FORWARD -s 172.16.10.101 -j ACCEPT
iptables -I FORWARD -d 172.16.10.101 -j ACCEPT
The first 2 rules match all GRE packets between the pptpd server and client, and the next rules - the traffic between the server and the client.
When I turn the counters to zero and begin to generate traffic (to browse, to download etc.) I see that the GRE packets are even more than these in the FORWARD chain.
So, my question is first of all is my test correct and is it true that so much gre traffic is being generated during the browsing (it becames clear that the traffic is double than if the pptpd wasn't used as a gateway) and if yes - can that traffic be reduced?
Are there any semi professional Freeware cad programs in Linux.
View 9 Replies View Relatedif anyone of you have shifted using Paid Red Hat Linux with CentOS, and what are your experiences of moving from Paid Linux to Unpaid Linux CenOS. When do you suggest a person use Paid Linux and when to use Unpaid Linux?
View 1 Replies View Relatedi would just like to verify that the command
lspci would show the FC adapter installed
is there any other command that i can use to verify the FC adapter is being installed
I want to Migrate my C++ Application from SuSE Linux to Red Hat Linux.What impact analysis i should do?
View 3 Replies View Relatedi had installed open suse linux enterprise server 10.2 SP2 (x86_64) i successfully installed the operating system with adding more packages, but after going inside i cannot configure ethernet, though i have 2 ethernet ports, no ports has been found, i installed some drivers but i cannot found the ethernet , while giving command ifconfig i get this ,
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:16436 Metric:1
[code]....
how i need to detect the ethernet card i updated more packages and configured network card but not connected...
What is the best analogue capture program please to capture Austar.
View 1 Replies View Relatedhow to share a folder from linux to linux systems and setting password to open that folder
View 14 Replies View RelatedWe have something on our network that is reaking havoc with our content filter. I am trying to track it down, but so far I have been unsuccessful. We have approximately 500 devices in 100+ different locations spread across 9 states. Looking at each computer is not really feasible.
I need a machine that can sit in between our network and our internet connection and graphically monitor in real time and logs how much traffic each device is sending and receiving. It would need to sit inline so it has to have two nics and be able to pass traffic. The machine also needs to be transparent. Reconfiguration of our routers or workstations is not an option.
I have used ethereal and wireshark before. Ethereal may be a viable option, but wireshark seems to provide lots of information, but no practical way to make use of it. how to set up the box to be a transparent device on the network that will allow internet bound traffic to flow (freely)?
I need to set up my centOS computer as a firewall in my home network. Ive got 2 interfaces, eth0 and eth1. I want to allow and forward all traffic on eth0 and block all traffic on eth1 except ssh, ping(icmp) and DNS. How do I do this? Ive tried some editing in /etc/sysconfig/iptables but no luck.
View 1 Replies View RelatedI wanted to tell my server to block all traffic but US only traffic. So i followed this guide:[URL].. Now I know, it's the best way to help prevent hackers/crackers (doesn't matter to me what they are called. I just have to stop them). My server only deals with US clients anyways so might as well just start right there for my server's security before getting into the brute force and injection preventions. So I got it all done compiled everything moved to the proper directory. I then started to setup my iptables. Like so
Code: iptables -F INPUT
iptables -F OUTPUT
iptables -I INPUT 1 -s *.*.*.* -p tcp --dport 22 -j ACCEPT
iptables -I INPUT 2 -s *.*.*.* -p tcp -j ACCEPT
[Code]...
After seeing that i went digging in the code and figured it was something todo with memory allocation.
I have learnt that the network locked huawei modems may be unlocked to use any sim card bu getting a special unlock code and it should ask for it when a "foreign" SIM card is inserted. This procedure works well in Windows, but in Linux where I use wvdial, I dont get prompted for this unlock code. Does anyone know how to insert the unlock code in Linux using any Linux tool (GAMMU/GNOKII/Minicom etc)?
View 2 Replies View RelatedI am searching and I cannot find a driver for http://goshopping.thestar.com/shop/p..._10056075.html
View 3 Replies View RelatedI have a toshiba phone system that has a feature where it spits raw data and i can direct that data to a serial port on the toshiba phone system or to an IP/PORT the data is just ascii data - tells me calls that are made/time/etc
I would like to setup an existing linux box to capture this data and store the data for me
then later i can build reports based on that data (and for me a report could be just a few cat's/greps/etc so basic stuff) - but i can figure this out later.
for now i would just like to GRAB the data on a port and dump it into a file (and recycle files every 24 hours)
how to capture the FTP session output from Net::FTP module to a text file or in a variable ?
View 1 Replies View RelatedI want to make a demo of a 3d app I'm writing, but I don't know of any good screencasting software like it that runs on Linux.
View 2 Replies View RelatedI do a lot of beta testing on vario ustros and encounter a problem during initialinstalls .does one capture the screen display during installation when an error occurs?The display usually doesn't stay on long enough to copy the information, even when moving into an error console (such as Alt-F3).often doesn't have the install data, especially errors.Screen capture programs are not up and running at that point.I've tried taking a picture of the screen with a digital camera but the results were not very good.
View 4 Replies View Relatedif I open a terminal and hit [TAB] [TAB] it will display "Display all 2583 possibilities? (y or n) ". If I press y is there a way to capture the output and write it to a file? Not like it is a command so I can't just use a redirect to a file? If not I guess I could just do an ls on all locations of $PATH and capture that to a file.
View 7 Replies View RelatedHow do capture current cursor shape using X11/X-Windows? How do get current cursor image (RGB or else)using X11/X-Windows?
View 3 Replies View RelatedI'm trying to capture a video from a site in Japan. Unfortunately, most of the video downloader tools don't seem to work. Since I'm using Firefox I'm guessing I can't look in my local cache. Is there any way to find it?They might block you if you're not in Japan. I used to use a proxy server when I was in the US but after a while it didn't work.
View 5 Replies View RelatedI am basically wanting to use my Ubuntu 10.10 computer as a router. Note: Before you say just get a router please note that I am poor/cheap. I have two ethernet connections and one wireless connection on my netbook. I want to share the internet connection that is going into one of the ethernet cards through the other ethernet card and the wireless card.
DSL-->1sr Eth --> 2nd Eth (currently works)
DSL-->1sr Eth --> Wireless Card (Adhoc) <--(connects with limited connectivity AKA no internet)
The 2nd Ethernet card already has working internet, but when I connect to the Wireless card (through an Adhoc network), it cannot get an IP (I believe).
Suggest me a good screen capture utility software for fedora?
View 10 Replies View RelatedI have video capture device "MSI vox USB 2.0", every thing seem to be fine, but none of tv applications show the device, they just show my webcam "/dev/video0"
It's driver is "em28xx" from "v4l2"
I test it with "mythtv, tvtime, xawtv, kdetv, me-tv, v4l2-tool, vlc, mplayer" none of them work detect the device, expect mplayer open a green window with time out message.
The device work fine under windows I test it with vlc-win
lsusb show:
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dmesg | grep em28xx show:
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So i did:
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then:
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