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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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 :: 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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Fedora Networking :: Connect The Network Where The Openvpn Client Is,throught The Computer With The Client To The Other Network?

May 20, 2009

I have the following problem:I have to networks in remote places.I have an opnvpn client in one network that connects to the the router (openvpn server).My question is,can i connect the network where the openvpn client is,throught the computer with the client to the other network.If yes,how? (please make it an idiot proof anwser because i have limited knowledge about iptables). I was thinking like forwarding (the router in the network with the openvpn client is also firewalling with iptables) the request of the ip class of the openvpn network to the computer with the client,which masquarades the interface

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Networking :: Spurious Network Traffic From ATT U-Verse Router?

Aug 9, 2010

In my "computer room" I have an ATT U-Verse TV decoder box and my computer connected to a Netgear Switch. The third port on the switch connects to the ATT router. I've just noticed that when I power on the U-Verse TV box I start getting a lot (200-250 KiB/s) of received packets on my Debian Lenny machine as shown in the System Monitor app. I don't show any outgoing traffic in response. That explains why the lights on the switch are blinking at the same rate for both devices. So, what, if anything, is this telling me? Is this normal, or is the ATT router spamming my Linux machine for some reason? Is this a potential problem?

Added: Or is this just telling me that the NetGear FS-105 is not actually an ethernet switch?

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Networking :: Most Common Method To Route Network Traffic As A Router/proxy

Apr 22, 2011

I am using Debian 5 and I have some networking experience, however I want to learn to do this the best way possible. I have a Debian box with two nics and I want to connect that to a switch and use my Debian box as a router basically, as well as having a firewall setup within that too.

Should I use iptables to set up nat or the route command or what? I just want to know the group of tools to use in order to set up my network. Network diagram: Internet <------> Debian Box <----> switch <----> hosts I found some guides but they are for linux 2.4 and i'm not sure if they are right.

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Ubuntu Networking :: Insert Another Wired Network Card Into The Router-connected Computer

Sep 25, 2010

Would it be possible to insert another wired network card into the router-connected computer, share the internet connection and be able to transfer files between the two?

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Networking :: Get Each Port Of Traffic Of A Switch In MRTG?

Mar 5, 2010

made software which we can get network traffic Report of of Switches for Daily,monthly and yearly base , in MRTG we can configure as a switch so we can get particular switch Traffic but how can we get each port of traffic of a switch in MRTG

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Ubuntu Networking :: Measure Network Speed Between Two Servers

Jan 18, 2010

Any command line tool to measure the network speed between my two linux servers without taking disk speed into account? My network is supposed to be 100Mb, but it doesn't feel like that so I wonder where the bottleneck is. The numbers that I see doesn't correlate well to that. So I'd like to know the speed network card to network card.

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Networking :: Need Bandwidth Traffic Measure By IP

May 25, 2011

I have a proxy/gateway server with X routable addresses and X clients, each connecting to his corresponding address from my server. All clients have public static IP's. I need something like the output of 'pktstat -1 -w 10 -B -i eth0 -n -P -t -T' but that would indicate the biggest'traffic hogs' from my clients.

Something like: <-> my.public.ip.1 1344KB/s up 289KB/s down <-> my.public.ip.2 1203KB/s up 200KB/s down

With this output, I can limit the traffic passing thru my server using a bandwidth limiter on my.public.ip.1 and my.public.ip.2. Pktstat only shows the total traffic from-to the respective IP's gathered in a 10second interval (-w 10). I would like something that would indicate the bandwidth per ip more precisely, I don't want to divide the total traffic by 10 (seconds).
Please note that this will go in a cron job. The interactive tools like iftop are useless (I would like something like a text screenshot of iftop from which I could extract the needed information).

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OpenSUSE Network :: Setup As A Network Boot Server To Install Solaris 10 On A Sun Ultra 10 Client?

May 12, 2011

I have an opensuse 11.3 install which I want to set up as a network boot server to install Solaris 10 on a Sun Ultra 10 client. According to what I've read, this requires rarpd and tftpd which I've set up on opensuse, but also bootparamd which I can't find for 11.3. It seems it was last included with opensuse 9.2. Does anyone know if it's available, if I could use the suse 9.2 version, or any alternative?

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Ubuntu :: Can Not Get To Recognise It And So Computer Will Not Find Router Network?

Mar 19, 2011

downloaded the Ubuntu Netbook OS and it works great but I have a Hp mini 1010nr with built in wifi. I can not get Ubuntu to recognise it and so my Computer will not find my router network. How do I get it to get online? [URL]...

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OpenSUSE Network :: Router Configuration - Get Computer To Share Internet With Laptop

Dec 29, 2009

I've just spent the entire night trying to get my computer to share Internet with my laptop. I have DSL Internet with the modem configured to bridge mode. On the openSUSE server I have two NIC's. When setting up the DSL (pppoe) it created a dsl0 which is using the NIC eth0. So now I have dsl0, eth0, and eth1 I configured eth1 for DHCP server. When I connect with my laptop using DHCP it gets an IP address just fine. However I can't access the Internet. I think my problem is in the Kernel IP Routing Table. Here is the output from /sbin/route -n


dsl0 obtains IP from ISP eth0 is set to DHCP although that confuses me because how can the same NIC have two IP Addresses? eth1 static IP

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Networking :: Network Setup - Router - Wireless Router Card ?

Apr 24, 2010

I'm having trouble getting my network set up the way that I want it/had it. You see, when I first set up my network, I just had my cable modem going directly to my standard wired router (A D-Link DI-604), which had DHCP,and was connected to all of the computers on my network. I had one switch hooked up to one of the ports of the router, but this was a regular switch, and it would not try to assign IP addresses, it would just pass through the DHCP info as I wanted.

Now however, my network setup has changed. My room mate and I both got laptops, and we decided that we wanted to have wireless access so we didn't have to constantly plug in to the router.

Now my network is set up like this: The modem is hooked up to the router(DI-604), which is hooked up on the LAN side to our computers, our switch (which is hooked up to 3 more computers), and to a wireless router card (A Gigabyte GN-BC01).

The wireless router card has two jacks for ethernet. One for WAN, and one for LAN. The LAN side we have plugged only into the computer in which the card is installed.

Now the problem is this: The wireless router card comes with DHCP by default, and it's assigning addresses to the laptops and to the computer hat it's in, and worse, the IP addresses are on a different subnet than that of the main dlink router. The Main (dlink) router assigns addresses from (itself) to, while the wireless router card assigns addresses from to (itself).

Because of this, I cannot access services on the wireless network from my wired network or vice versa. The first thing I tried was setting the card to assign addresses from to, however it just said "internal error" when I tried to do this. I decided that this may be because it sees that it was being assigned an address on it's WAN side on the same subnet. So the next thing I tried was disabling DHCP and setting the "LAN IP Address" to, hoping that the DHCP would just go through the card, like a switch. I would have set the LAN IP address to be assigned by DHCP, but this was not an option, so I decided that'd be the best thing to set it to.

Once again however, setting the LAN ip address to an address on the same subnet as that of the IP assigned to it's WAN side caused it to report an "internal error". I verified that this was the issue by setting the LAN address to several other private IP addresses to test (I.E.,,

My question then really is: How do I set up both routers so that I can access services and computers from each network from the other network. Should I set them with different subnets and set the gateway on the wireless network to the main router? To the wireless router card? Should I put them on the same subnet? Will it know how to communicate?

Here is a link to (picture) my network diagram. Network Diagram

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OpenSUSE Network :: Blocking Outgoing Network Traffic On Workstation?

Sep 14, 2011

As too my question, at this time I dont control the router/firewall an I would like to block a port thats used for guild wars on my workstation for a while. The reason for blocking is children have abused it an lost it.In this case I am trying to block outgoing traffic on port 6112. I have tried setting up a proxy server on the workstation, but the game seems to ignore it an jump on. Due to the environment, I enabled the workstation SuSEFirewall2 firewall an tried setting up "lo" as a internal an configure the firewall as a router, then disable 0/0 an configured for 0/0,tcp,443 an re route port 80 traffic to proxy.

When I had my own internet, I had a transparent proxy enforcing rules for access times. So setting up a proxy on each machine would not be a bad thing, even if it took some creative thinking. I am trying, but seem to be missing something.Ideally, I would like to setup a transparent proxy, as my kids have learned alot about system administration an know to check the proxy module. If all they have to do is un check "Use Proxy" an by pass a local proxy server, then I am kinda defeated. An applications such as firefox have a proxy setting they could set to none instead of system

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OpenSUSE Network :: Using Nx Client - See Exactly Same Desktop-taskbar And Open Programs As Left Them In Work Computer

Feb 7, 2011

I am using nx client and I would like to ask your help. Is it possible when I connect from home to my work's computer (using nx client) to see the exactly same desktop-taskbar and open programs as I left them in my work computer.

Imagine that you are at work using your computer. You lock the keyboard and you go home(you didn't turn it off). You go home and you login to work's computer. What I want to see is the same if I was just unlocking works's computer. IS that possible and how?

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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:


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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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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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 :: 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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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 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 :: 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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Networking :: Preventing Internal Network Traffic With Firewall

Jul 3, 2010

Does anyone know if it is possible to filter/block network traffic between internal hosts on a lan?

Eg. : Linux firewall/router ( - LAN Default G/W - all internal > external traffic gets filtered.

How would you filter tcp/ICMP/UDP traffic from internal host a ( ) to host b (

All the internal hosts have the linux f/w as the default gateway, and are all on the same /24 subnet.

I would like to know if I can filter traffic between internal hosts.

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General :: Setup For MRTG Network Monitor Tool?

Mar 11, 2010

i have done most of the setup for MRTG network monitor tool.

But i m stuck at configuration part.

the actual MRTG guide says following.

I m little confused about what should i put inplace of


The next step is to configure mrtg for monitoring a network device. This is done by creating an mrtg.cfg file which defines what you want to monitor. Luckily, you don't have to dive straight in and start writing your own configuration file all by yourself. Together with mrtg you also got a copy of cfgmaker. This is a script you can point at a router of your choice; it will create a mrtg configuration file for you. You can find the script in the bin subdirectory.

cfgmaker --global 'WorkDir: /home/httpd/mrtg'
--global 'Options[_]: bits,growright'
--output /home/mrtg/cfg/mrtg.cfg

This example above will create an mrtg config file in /home/mrtg/cfg assuming this is a directory visible on your webserver. You can read all about cfgmaker in cfgmaker. One area you might want to look at is the possibility of using --ifref=ip to prevent interface renumbering troubles from catching you.

If you want to start rolling your own mrtg configuration files, make sure you read mrtg-reference to learn all about the possible configuration options.

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Server :: MRTG Snmp Network Graph Empty ?

Sep 20, 2010

I installed MRTG some hours ago. Everything works fine (disk, cpu,..), except the network graph.
For this graph, it's only work for ~3 cycles (15min), then... nothing.

This is the part of mrtg.cfg:


The number for eth0 is 3


SNMP is running:


Crontab is configured for mrtg (and seems it's not the problem because the other graphs works well):


In attachement is the graph for the memory (working!) and .. for the network, as you can see, only one small pic at the beginning.

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Ubuntu Networking :: Boot Computer And Network Manager Shos "no Network Devices Available"?

May 10, 2010

Loaded Ubuntu 10.4lucid on TransPort NX Mobile Pentium II, 328MiB,Using Netgear Rangemax wn511b. with Broadcom STA wirless driver. bcm43gx.Boot computer and network manager shos "no network devices available" Run system/administration/hardware drivers and the Broadcom STA driver shows up (only one that shows up) REMOVE and then ACTIVATE and the network manager sees it and connects fine. Shut down computer, restart and no device. I am forced to Remove and Activate each time I start the computer.Is there a way to set this driver to be found and run at computer start.

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Ubuntu Networking :: Wireless Network Traffic Suddenly Stops In 10.04?

May 17, 2010

My problem is that my wireless network traffic sometimes just stop.Like when I tries to update my system, update NetBeans or just download using Uget. I have no clue on what's wrong,Here is my system info:

Laptop model:
Lenovo R500


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Ubuntu Networking :: Redirect Network Traffic To A New IP Address Using IPtables?

Jun 19, 2011

how to redirect network traffic to a new IP address using IPtables. I am using Baffalo router and the rtos used is DD-WRT. Basically, I want it so that any connection going through my router to a specific IP (say, will be redirected to another IP (say, so any outgoing connections made by a program that is attempting to connect to192.168.11.5 will instead connect to

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