Networking :: Monitor Current Network Traffic To A Give Host?

Oct 29, 2009

is there a utility with which I can get the current traffice towards a given host, for example;

command 87.255.33.32
22000

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Networking :: Trace Incoming And Outgoing Network Traffic For A Give User?

Mar 14, 2010

OS : CentOS 5.3 64bit How to trace incoming and outgoing network traffic for a give user? User 'A' logs in to the system and does various network connectivity As root user need to find what are the outgoing and incoming connection that are related with user 'A'. basically need to check the connection flow. netstat will show ESTABLISHED, LISTEN etc.. need something like tcpdump

Eg:- --user option for tcpdump tcpdump -vv -nn -i eth0 host 10.200.2.1 and tcp dst port 8080 --user A Can someone tell me any tool which can do such thing? Even if it can show the process ID of the client application which is trying to establish network connectivity will do.

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Ubuntu Networking :: Monitor Network Traffic ?

Jan 20, 2011

Is there an easy way to monitor network traffic? I want to make sure my kids are surfing safe...

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Ubuntu Networking :: Monitor Network Traffic (for All Computers)?

Sep 27, 2010

what I want to achieve is just to be able to say to who ever is killing our relatively fast connect that they aren't the only person using the network. Everyone just says "I hardly download anything." which is obviously untruthful as normally I can download at 1.5 MB/s but now loading even google.com takes way too long (same with pinging and all other sites). Once I do this, I can determine whether or not I need to call my ISP and do the long 'on hold' dance and "have you tried rebooting the router" BS.

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Ubuntu Networking :: Unable To Separately Monitor The Download Traffic From Inside And Outside The Network

Sep 14, 2010

I am connected to a network with free traffic inside it and post-paid outer traffic. So I need a way to be able to separately monitor the download traffic from inside and outside the network. All the solutions I`ve found for now offer monitoring of ALL up/down traffic.

So, I want to get separate statistics on these:

1 — 81.89.188.0/23, 217.197.9.0/24
2. — 81.89.186.0/23
3. — 81.89.178.0/23
4. — 81.89.176.0/23
5. — 81.89.180.0/24
9. — 217.197.12.0/24

[Code]...

UPD: I`m connected to the internet through the network`s gate, so all the traffic comes through eth0. I wish to separate traffic incoming from the IPs on top from all other traffic

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Networking :: How To Give IP And Host Name

Dec 4, 2009

I have installed fedora 11 in my system , during the installation process it prompted me to enter the IP ,local host and local domain name .i have entered something .but my question is that how to change that IP and the domain name which i was given in the installation process.

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General :: Monitor Network Traffic Of Each Application?

Jan 22, 2010

I am on a slow Internet connection and it really makes me mad if something gets downloaded in background (like automatic update of any software) without my knowledge.

How can I monitor my network traffic sorted according to the "which binary file is using how much"? I can find the total transfer rate in "System Monitor" in Gnome, but what if I want to find for individual process. There are softwares like netmonitor in Windows, but how can I achieve that in UBUNTU LINUX.

GUI application will be nice, command line software will also be fine..

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General :: Finding A Traffic Monitor That Only Counts In A Specific Wireless Network

Jul 28, 2011

I need a simple traffic monitor for Linux, that counts the traffic in a specific wireless network because I have volume restrictions on that one.I tried it using the following iptables rule:

[code]...

iptables -m mac -A INPUT -p all --mac-source <mac-address> ! -s 10.0.0.0/8

where <mac-address> is the router's one. 10.0.0.0/8 is the local subnet. What I actually want is something like --routed-through <mac-address>. Also, is there some way to gather iptables's statistics? Or is there maybe another tool that does what I want (reliable)?

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OpenSUSE Network :: Monitor Which Programs Are Allowed To Access The Internet And Limit Traffic

Nov 8, 2010

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?

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Ubuntu :: Internet Traffic Flow Monitor - Track Traffic Of Each Device

Apr 27, 2010

We 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)?

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Networking :: Route Traffic From A Single Host Through A Specific Interface?

Aug 21, 2010

I have a linux router with 2 physical ISPs and a VPN tunnel that all my traffic passes through. I would like to setup a rule to redirect all traffic from one internal IP address (10.0.0.x) through the physical link only. My current script is as follows.

iptables -F
iptables -X
echo 1 > /proc/sys/net/ipv4/ip_forward

[code]....

My goal is to do something similar to the mangle on the tor traffic, but for an entire host.

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Networking :: Monitor A Router Traffic?

Jan 8, 2010

is it possible to see the router traffic using a remote system? can those packet headers b modified for marking purpose?

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Networking :: How To Monitor The Traffic Of Tun0

Dec 18, 2010

How will I monitor the traffic of tun0 ?

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Networking :: Easiest Way To Redirect External Traffic To VMWare Web Host On Same Machine?

Jul 14, 2009

Have done a bit of Googling around this but got totally swamped so will try here. Basically we are running a CentOS server which hosts a number of virtual hosts under Apache. Recently I needed to set up a development environment for another site using Ubuntu and have this running and accessible on the LAN from a VMWare image. I'm using bridged networking so the VMWare machine has its own IP on the LAN subnet.

I've set up a DNS to point to the external IP of the physical host but can't figure out how to route traffic requested on this domain to the VMWare host. I've basically tried two approaches (configuring a proxy web server and reverse proxy in an httpd.conf file and mucking around with iptables forwarding rules but without success.

Ideally I'd like somesite.somewhere.com to point to the VMWare IP but I could live with a custom port on the end if thats whats required.

To throw further complication into the mix I need reliable communication between the VMWare machine and external mail relay servers in order to debug any issues with mail bouncebacks, embargos etc.

Any idea what's the easiest way to accomplish this?

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Fedora Networking :: Internet Traffic Monitor ?

Mar 9, 2009

Is there a nice easy to use tool that displays (in KB/s) the internet traffic from every IP on a network?

Currently I'm using iptraf, but it's very hard to understand at times.

A little info on my network:

I'm using SNAT for internet sharing.

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Networking :: IPtables: Route Outgoing Traffic From Internal Host To Only Go A Internet Interface?

Nov 21, 2010

My Ubuntu Box has 3 interfaces. eth0 (Internal 192.168.1.0/24)eth1 (External ISP DHCP)eth2 (External ISP Static IP)I need the outgoing traffic to internet for 1 of the internal pc (192.168.1.10) to only go only go through eth2

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Fedora Networking :: Monitor Broadband Internet Traffic Only ?

Aug 23, 2009

I have a 2 machine LAN with both machines having an ethernet card and a wireless card. There is a Netgear router, both eth and WiFi, allowing both machines to access the internet.

On my Linux machine I am looking for some software that allows me to keep track of my broadband usage on that machine, excluding traffic between the two machines.

There are numerous such programmes for this in XP, which use Winpcap and a GUI frontend. The "other" machine on my LAN is XP and uses just such a program.

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Ubuntu Networking :: System Monitor Doesn't Show Internet Traffic?

Mar 8, 2011

Ubuntu system monitor applet doesn't show internet traffic although my wireless is working just fine. I use a conky to monitor bandwidth through vnstat and had no problem till I upgraded to maverick.

**ifconfig
wlan0 Link encap:Ethernet HWaddr 00:24:d2:c4:3e:da
inet adr:192.168.0.100 Bcast:192.168.0.255 Masque:255.255.255.0
adr inet6: fe80::224:d2ff:fec4:3eda/64 Scope:Lien
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1

[Code]...

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Networking :: Very Low Network Performance In Host-to-host Connections

Jan 27, 2009

The internal network is behind nat done by the PC Router.The TP Link is recieving wireless signal from outdoors and it has switching and basic routing capabilities. I'm using the PC router for better routing options.PC Router (or R for short) is a triple-booting machine - Linux, FreeBSD and Windows. It has two lan cards - external (ext_if) - 100Mbps Realtek 8139 and internal (int_if) - 1Gbps integrated Realtek 8169.The problem is that all traffic from R to the network is slow - about 5-20K, while the traffic in the oppoiste direction is all right - about 10MB that is fine for 100Mbps cables, NICs and switches. The problem persist no matter the OS the pc R is running.I've tried some debugging on the situation as follows:

- put another PC at the place of R - everything is fine. That exclude the possibility of damaged cables, RJ-45s, switches and etc.
- connected both of the NICs to the Internet while the internal network is being disconnected and they both work fine (no delays)
- traffic shaping is not running
- there is nothing in firewalls except NATing the internal network (and it is working fine). Actually these firewall rules have been operational for more than months and everything was fine untill a week or two ago.
- changed the internal NIC with another
- connected the internal network directly to the TP and all of the PCs are getting good network performance. Then connected the R machine to the TP as well and there was good performance between the internal network PCs and R.
- R has good performance to the TP. In fact everything has good performance directly to the TP (when not connecting trough R).
- the problem persist only between R and machines from the internal network.

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Networking :: Install Mrtg On A Client Computer In Network And Measure The Network's Router Traffic

Sep 4, 2009

I wanted to know if i can install mrtg on a client computer in network and measure the network's router traffic.i know that it can be installed on the server.

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Ubuntu Networking :: Unknown Network Traffic

Jan 16, 2011

I noticed a huge data transfer to my computer. I wasn't downloading anything big, I have just opened Firefox, Thunderbird etc. It stopped after a minute but I'd like to know, what that was - this wasn't the first time something like this happened. I promptly started Wireshark and captured a few packets, all of them look like this:

[code]...

I tried to look at [URL]... but that webpage does not work. what the traffic might be caused by? Couldn't anyone hacked my pc?

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Networking :: Software That Measure QoS Of Network Traffic?

Jan 31, 2010

I need software that measure the QoS of network traffic , Any recommend program?

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Networking :: Filtering Traffic On Network Interfaces?

Feb 8, 2010

I am manually capturing and injecting Ethernet traffic (using lib_net/lib_pcap libraries) for an application. At the moment , both capturing and injecting are done on the same physical interface (e.g. eth0). The problem is that all the traffic that I inject, are captured again by my application causing an unwanted feedback of injected traffic. This caused that I had to implement traffic filtering when capturing traffic, which is consuming resources and eventually will become too complicated to support.

I have tried using virtual interfaces to separate the capturing and injecting streams, but that also presented the same problem as all the traffic from eth0 is forwarded to both eth0:1 and eth0:2. If possible I would like both streams to go through 1 physical device, using more PDs will be the last resort. I am also looking at using TUN/TAP devices to try and separate the two streams, maybe writing a user-space program that lies between the physical device and the TUN/TAP devices to do the routing of traffic.

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Networking :: Software That Measure The QoS Of Network Traffic

Jan 31, 2010

I need software that measure the QoS of network traffic , Any recommend program??

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Networking :: How To Know Which Program Generates Network Traffic

Dec 8, 2008

Via a network traffic monitoring tool I see that my laptop is generating lots of outgoing (EDIT : incoming !!) network traffic. Although no download program is running or any other program of which I know that could be generating this much traffic. Something strange is going on and I need to know how I can find out which program( s ) are generating network traffic.

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CentOS 5 Networking :: How To Configure Network For Web Traffic

Oct 18, 2009

how to configure my network for web traffic.Here is my setup:I have the following virtual machines, (all guest are running on CentOS 5.3);

firewall: Smoothwall 3.0, (hardware, not virtual)
guest # 1: Apache http server
guest # 2: Qmail server
guest # 3: Proftp server

I want all of these services on different machines for security reasons, (mainly the ftp server) how do I route the traffic from the firewall to the different machines? I have been looking at setting up a reverse proxy, however, everything that I have read says that a reverse proxy will not handle the smtp/pop3 traffic. Can I just use a DNS server to route the traffic?

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Debian :: DHCP: Give Same Ip To 1 Host?

Jan 16, 2011

I want to configure my DHCP Server on debian "router" so that this DHCP Server could give 1 "static" ip to 1 of my host (so that this host receive always the same IP address from DHCP Server)

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Ubuntu Networking :: Traffic Monitor - How Much Data Downloaded/uploaded On An Interface This Month And Previous Month

Nov 20, 2010

I'm looking for a powerful network traffic monitor that can do all of the following (or at least a combination of tools that can do the following):

Tell me how much data was downloaded/uploaded on an interface this month and the previous month tell me how the traffic was used throughout the monthshow which internal IPs (IPs in the 192.168.1.0/24 network) used how much traffic show which ports/protocols on those IPs used all that traffic

Hhow LIVE traffic flow statistics that can tell me total speed of traffic going through an interface as well asshow which internal IPs (IPs in the 192.168.1.0/24 network) are using how much of the traffic show which ports/protocols on those IPs are using that traffic

This tool will run on a linux router through which all my internal PCs are connected to the Internet. This means the tool(s) need to work with NAT (traffic being forwarded and not necessarily destined for the interfaced being monitored).

The distribution being run doesn't have a package manager so any packages or dependencies have to be manually compiled and SCPed over file by file. For this reason, the tool/tools need to be simple (things like vnstat, not things like ntop that have their own web interface).

I know that vnstat can tell me the first bullet point so it's only there incase there's a tool out there that can do everything. If there's a tool that can only do the second or third bullet point, that's great too - I'll just keep using vnstat and look for something else to do the other task.

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Ubuntu Networking :: System Generating Lot Of Network Traffic

Apr 4, 2011

I am running Ubuntu 10.10, upgraded a few weeks ago from 10.04. I noted from the system monitor that the system was generating a lot of network traffic, on the order of 10Mbps if the information is correct (using system monitor and iftop). From the process table, it appears that smbd is accumulating a lot of CPU time, which sort of makes sense as I use Samba for printing from a Windows 7 laptop. But the traffic seems to be making a round trip as I just rebooted the system and it reports in about 10 minutes of uptime 1.2GB was send and 1.2GB was received. Laptop is used for work, it is sitting idle for the last 30 minutes (VPN connection, etc); no backup or other interaction with the Ubuntu system.

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Networking :: Configure Network Traffic To Go Through Home Server?

Dec 28, 2010

How could I configure Ubuntu to be setup as follows...

Wireless Client ----> Wireless Router ----> Home Server ----> Internet

What is needed to make all of the wireless traffic go to my internet connection port. I will be having two ethernet cables plugged into the system one from the wireless router and one to my internet router.

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