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  • How can I monitor network traffic?

    - by WIndy Weather
    I have a home network with about 10 devices including BluRay player [netflix] and both windows and linux machines. I need to collect network traffic statistics so that if questions come up about how much traffic I'm using I have the answer independent of my ISP. I've looked at DD-WRT, but I see that even buying a new router that will be supported is a problem since I might get the wrong version of the hardware. I have a DIR-655 and a DIR-501 - neither of which is supported. I don't mind buying new hardware, but it looks like a crap-shoot to get one that will work. DD-WRT looks like a bad solution unless someone knows of a place to get a router that is guaranteed to work. Does someone know of an arduino or other SBC solution? I have plenty of NAT routers already, so I just need traffic statistics for external traffic. The network is GBit Ethernet inside and Cable / soon to be DSL outside. The DIR-655 only gives me "packets", not bytes transferred oddly enough. Thanks, ww

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  • Traffic shaping & monthly traffic limit in Tomato?

    - by Matt H
    Is there a way to do a monthly traffic limit in Tomato, DDWRT or OpenWRT in addition to the regular QoS? This is for a house with several students sharing the internet. I.e. for a specific IP address, IP Range or MAC address, the firmware will count the download traffic for that month. When a configurable limit is set, it'll either limit it to say 64kbit/s up/down or drop all traffic and maybe redirect web traffic to an internal web server telling them that they have exceeded their quota. How can this be done with those firmwares?

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  • How much traffic a linux-based shaper would be able to chew

    - by facha
    Hi, everyone I have a linux based traffic shaper (iptables + tc htb policy). It works in bridge mode. Shapes traffic based on IPs and ports (there are about 100 rules in the "mangle" chain of iptables). Right now its throughoutput is about 100 mb/s (I don't remember pps, there are about 800 users in the network). Just was wondering - when I will hit the limit. How much traffic could a linux-based shaper possibly get throuhg it. If you have one under heavy load, please could you write what machine you use and what load there is. Or if you have any other info about the subj, please write as well. Thanks in advance.

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  • Shaping outbound Traffic to Control Download Speeds with Linux

    - by Kyle Brandt
    I have a situation where a server makes lots of requests from big webservers all at the same time. Currently, I have not control over the amount of requests or the rate of the requests from the application that does this. The responses from these webservers is more than the internet line can handle. (Basically, we are launching a DoS on ourselves). I am going to get push to get this fixed at the application level, but for the time being, is there anyway I can use traffic shaping on the Linux server to control this? I know I can only shape outbound traffic, but maybe there is a way I can slow the TCP responses so the other side will detect congestion and this will help my situation? If there is anything like this with tc, what might the configuration look like? The idea is that the traffic control might help me control which packets get dropped before they reach my router.

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  • IPtables Traffic Quota - up and down

    - by Nick
    I've been trying to set up traffic quotas for users on a shared server and i believe [with my limited knowledge] that iptables --quota and ports which have been selected for each user [--dport] is the way to do this... iptables -A OUTPUT --dport 1,2,3,4... --quota 123412341234 -j ACCEPT iptables -A OUTPUT --dport 1,2,3,4... -j DROP I think something like this would work to limit the traffic [and reset every month] but its only for traffic going out. Is there something I could do to combine -A OUTPUT and -A INPUT into one quota? Or, is there a different method I could use to achieve the same thing more efficiently? OS is debian squeeze Thanks.

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  • rsync generates very much traffic

    - by user109459
    I use rsync for backing up one of my servers with 4GB of files. When I now try to transfer these files the traffic for the files isn't the estimated 4GB. It is a lot higher. It's about 60GB. I also checked the traffic on my server, backup server and router and all three say that there was a traffic of 60GB. But at the end rsync says that it only has transfered 4GB. Another problem is that I can't debugg it because the problem occures randomly.

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  • How to filter http traffic in Wireshark?

    - by par
    I suspect my server has a huge load of http requests from its clients. I want to measure the volume of http traffic. How can I do it with Wireshark? Or probably there is an alternative solution using another tool? This is how a single http request/response traffic looks in Wireshark. The ping is generated by WinAPI funciton ::InternetCheckConnection() Thanks!

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  • iptables intercept local traffic

    - by Anonymous
    i hope someone can help me out with somewhat simple task. I'm trying to redirect a client in my router through my desktop PC, so i can dump the traffic and analyze it (its potential source of poisoning the network with malicious packets). However i don't have a second NIC on my hands and i was hoping i can redirect all the traffic from that IP through my PC. In essence to become MITM for the client. Does anyone have any idea where to start: Current state: (localip)-(router)-(internet) And what i want to do: (localip)-(pc)-(router)-(internet)

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  • Is there a small business router that shows bandwidth usage graphs in the admin panel?

    - by Robert Drake
    I support a large number of public libraries that are having their networks upgraded in response to a grant application. These libraries are generally home to between 6-15 computers and have little or no tech services either onsite or contracted remotely. In order to justify current and future purchases, a number of the libraries have requested routers that can provide bandwidth usage graphs that they can show to their managing boards. Is there a small business router that displays traffic graphs in the router administration web interface? The router needs to suppport DHCP and basic firewalling. No other features are required. Further, the reports just need to show overall trends. It is not necessary to show traffic by IP, by protocol/application, or by time of day. They just need an overall week to week, month to month, trend line. I'm familiar with MRTG/PRTG/tools that collect SNMP data from the router, but the libraries don't have the expertise for the configuration. I've considered installing the tomato firmware on some cheap home/home office routers, but if there's a commercial product that can be purchased that would be significantly simpler. Also the library boards would be much more likely to approve the purchase of a commercial product over a 'hacked' one. Any assistance would be appreciated.

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  • iptables : how to allow incoming ftp traffic?

    - by logansama
    Hi, Still fighting my way through the jungle that is called iptables. I have managed to allow FTP access outside of our LAN: both these would work. NOTE: eth0 is the LAN interface and eth1 is the WAN interface. iptables -t filter -A FORWARD -i eth0 -p tcp --dport 20:21 -j ACCEPT or iptables -A FORWARD -i eth0 -o eth1 -p tcp --sport 20:21 --dport 1024:65535 -j ACCEPT But when i connect to a external FTP server i manage to log in and all is fine until it wishes to List the directory content. Then nothing happens as the data is blocked, due to the fact that i do not have a rule set up to allow it! (my last rule on the FORWARD chain is to block all traffic) I have tried a gazillion rules (many of which i did not understand) to try and allow the FTP traffic back through my server. One such rule for example was: iptables -A FORWARD -i eth1 -o eth0 -p tcp --sport 20:21 --dport 1024:65535 -j ACCEPT But i cannot get the List to work. It just times out after a while. Would anyone perhaps know how to build a rule which would allow FTP to List / allow such traffic back? Or have a link to sources i could work through? Thank you,

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  • Iptables - Redirect outbound traffic on a port to inbound traffic on 127.0.0.1

    - by GoldenNewby
    I will be awarding a +100 bounty to the correct answer once it is available in 48 hours Is there a way to redirect traffic set to go out of the server to another IP, back to the server on localhost (preferably as if it was coming from the original destination)? I'd basically like to be able to set up my own software that listens on say, port 80, and receives traffic that was sent to say, 1.2.3.4. So as an example with some code. Here would be the server: my $server = IO::Socket::INET->new( LocalAddr => '127.0.0.1', LocalPort => '80', Listen => 128, ); And that would receive traffic from the following client: my $client = IO::Socket::INET->new( PeerAddr => 'google.com', PeerPort => '80', ) So rather than having the client be connecting to google.com, it would be connecting to the server I have listening on localhost for that same server. My intention is to use this to catch malware connecting to remote hosts. I don't specifically need the traffic to be redirected to 127.0.0.1, but it needs to be redirected to an IP the same machine can listen to. Edit: I've tried the following, and it doesn't work-- echo 1 > /proc/sys/net/ipv4/ip_forward iptables -t nat -A PREROUTING -p tcp --dport 80 -j DNAT --to-destination 127.0.0.1:80 iptables -t nat -A POSTROUTING -j MASQUERADE

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  • What's the relation between website's traffic and Google Adsense revenue?

    - by user1592845
    Are there some relations between the website's daily traffic and Google's Adsense revenue? In other word, Suppose the same Ad. will be published on two different websites, the first has average daily traffic 2000 visits while the other has only 100 visits. Does one click on that ad. on the first website will make revenue more than the second website? I've got misunderstand with Google documentation and I need to make a clear idea about this subject.

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  • UFW: force traffic thru OpenVPN tunnel / do not leak any traffic

    - by hotzen
    I have VPN access using OpenVPN and try to create a safe machine that does not leak traffic over non-VPN interfaces. Using the firewall UFW I try to achieve the following: Allow Access from LAN to the machine's web-interface Otherwise only allow Traffic on tun0 (OpenVPN-Tunnel interface when established) Reject (or forward?) any traffic over other interfaces Currently I am using the following rules (sudo ufw status): To Action From -- ------ ---- 192.168.42.11 9999/tcp ALLOW Anywhere # allow web-interface Anywhere on tun0 ALLOW Anywhere # out only thru tun0 Anywhere ALLOW OUT Anywhere on tun0 # in only thru tun0 My problem is that the machine is initially not able to establish the OpenVPN-connection since only tun0 is allowed, which is not yet established (chicken-egg-problem) How do I allow creating the OpenVPN connection and from this point onward force every single packet to go thru the VPN-tunnel?

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  • Free Windows traffic monitor that can run a command when reaching a limit

    - by leromarinvit
    Does anyone know a free traffic monitor tool for Windows XP which can run a configurable program when reaching a limit? Hoo Net Meter and DU Meter can do that, but they both cost money. What I'm trying to do is throttle the connection when getting close to the monthly limit, so that watching YouTube or downloading large files isn't fun any longer, but e-mail or looking something up still work. The throttling part is settled, Traffic Shaper XP works nicely. I just need something to automatically call a batch script when reaching the limit.

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  • Flexible traffic & bandwidth monitor

    - by BrNathan
    I have looked around, but have not found anything to meet our needs. I need something that can log all connections & bandwidth consumption. We need it for analysis: by protocol, source IP (& MAC if possible), destination, etc. Ideally we are looking for something that can produce custom graphs & also uses mysql. All connections go through one server on a bridged connection (2 network cards) so it is easy to pickup traffic. We are not concerned so much with internal LAN traffic as what passes in & out to the firewall. Thanks for you suggestions. Update: I use Ubuntu 10.04

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  • capture nimbuzz traffic

    - by lurscher
    I need to capture all the traffic, specially during login, between nimbuzz pc client and nimbuzz server. The reason is that i need to debug outgoing packets at login that mark the user visibility status in order to reproduce them in a in-house XMPP client application I've tried doing this with wireshark, but i seem to be pretty helpless with this tool. Also, the packets i've been able to see are all before the SASL negotiation happens, after that, i cannot see the xml packets being exchanged any help for how to achieve this task is greatly appreciated (preferably on Windows, since there is no nimbuzz client for linux, in any case i can install one in a VM and monitor the traffic between the VM instance in the linux host)

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  • Traffic shaping L2TP/IPsec VPN (via accounts not connection)

    - by Cromulent
    I need to be able to control the amount of bandwidth a specific user account can use on a VPN connection. One account I want to be able to use the VPN with no restrictions and another account I want to limit to a reasonable amount of bandwidth (say 10GB or so a month). I'm aware that you can traffic shape individual connections but that does not quite solve the problem as the limited account can just disconnect and reconnect to get a new connection. I need to be able to limit bandwidth on a login basis for a given period of time (monthly limit). I'm really not that familiar with traffic shaping in general so any advice would be appreciated. Thank you.

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  • Where does traffic shaping typically take place?

    - by eekmeter
    As part of upgrading our network infrastructure we are looking to traffic shape our bandwidth since we only have about 3Mb down / 1 Mb up. We're looking to prioritize it so that web browsing gets priority and in the future some VOIP might be added in as well. Internal LAN traffic doesn't need to be controlled just our outbound connection. I've been looking at Cisco hardware and it seems that several of their products do shaping at the core switch, firewall, and router level. I'm wondering where does shaping normally take place? Is it normally done at the router, core switch, or firewall?

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  • Debian Squeeze - Monitor outgoing traffic

    - by Sam W.
    I have a small webserver that running on Lighttpd 1.4 which steadily uses 250GB or less bandwidth for the past couple of months. But since May the traffic spikeed to more than triple of what it was. Nothing special was on my site to make its spike like that. When I checked with vnstat I found that 70% of the bandwidth is tx. I suspect I've been hacked and my webserver is becoming some sort of bot. ClamAV comes out with nothing and I already replaced the Joomla installation with a fresh one, early in June. But right now the traffic stayed the same. My question, how can I monitor my server and look what is transmitting all that data out? My need to be done to pinpoint what is the culprit. Can someone please point to the right way to solve this? Thank you.

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