Monitoring network activity
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From: Miles Fidelman on 27 May 2010 08:40 AG wrote: > > Every now and again the lights on my broadband modem start flashing > which indicates package transmission/ receiving. When I have > deliberately started an application to access the web (e.g. web > browser, email client, etc.) that's fine. I do get a little concerned > however when the lights flash and I cannot find an app that is > accessing/ receiving info from the web. > > How would I go about finding out what application is connecting to the > web and/ or what is connecting to my machine to cause the modem light > activity? I've tried ps -A and ps -aux but this shows up a lot of > info which makes it difficult to see any particular activity that may > be responsible. netstat and ntop can tell you a lot about network connections I came across this recently, but haven't gotten around to trying it: http://nethogs.sourceforge.net/ Which purports to tell you what individual programs are doing vis-a-vis the net - sort of lsof for network connections, and exactly what you're asking for. Miles Fidelman -- In theory, there is no difference between theory and practice. In<fnord> practice, there is. .... Yogi Berra -- To UNSUBSCRIBE, email to debian-user-REQUEST(a)lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmaster(a)lists.debian.org Archive: http://lists.debian.org/4BFE668A.6070200(a)meetinghouse.net
From: Liam O'Toole on 27 May 2010 10:10 On 2010-05-27, AG <computing.account(a)googlemail.com> wrote: > On 27/05/10 10:44, Mirco Piccin wrote: >> Hi, >> >> > How would I go about finding out what application is connecting to the >> > web and/ or what is connecting to my machine to cause the modem >> > light activity? >> >> i think that with wireshark or ntop you should obtain the information >> you need. >> >> Regards >> M >> > > Hi and thanks for responding Mirco, François, and Michal > > After looking at the options, I decided on Wireshark and am giving that > a test run. > > Bit of a learning curve, but appears to do the job. > > Thanks for the suggestions. > > Best > > AG > > Even more choices: iptraf, tcpdump. -- Liam O'Toole Birmingham, United Kingdom -- To UNSUBSCRIBE, email to debian-user-REQUEST(a)lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmaster(a)lists.debian.org Archive: http://lists.debian.org/slrnhvsv76.4k0.liam.p.otoole(a)dipsy.selfip.org
From: AG on 27 May 2010 16:00 On 27/05/10 15:08, Liam O'Toole wrote: > On 2010-05-27, AG<computing.account(a)googlemail.com> wrote: > >> On 27/05/10 10:44, Mirco Piccin wrote: >> >>> Hi, >>> >>> >>>> How would I go about finding out what application is connecting to the >>>> web and/ or what is connecting to my machine to cause the modem >>>> light activity? >>>> >>> i think that with wireshark or ntop you should obtain the information >>> you need. >>> >>> Regards >>> M >>> >>> >> Hi and thanks for responding Mirco, Fran�ois, and Michal >> >> After looking at the options, I decided on Wireshark and am giving that >> a test run. >> >> Bit of a learning curve, but appears to do the job. >> >> Thanks for the suggestions. >> >> Best >> >> AG >> >> >> > Even more choices: iptraf, tcpdump. > > Choices ... choices - the blessing/ curse of OSS :) -- To UNSUBSCRIBE, email to debian-user-REQUEST(a)lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmaster(a)lists.debian.org Archive: http://lists.debian.org/4BFEC9C9.7010906(a)gmail.com
From: Ryan Nowakowski on 1 Jun 2010 00:10
iftop is what I use. - Ryan On Thu, May 27, 2010 at 10:12:27AM +0100, AG wrote: > Hi List > > Every now and again the lights on my broadband modem start flashing > which indicates package transmission/ receiving. When I have > deliberately started an application to access the web (e.g. web browser, > email client, etc.) that's fine. I do get a little concerned however > when the lights flash and I cannot find an app that is accessing/ > receiving info from the web. > > How would I go about finding out what application is connecting to the > web and/ or what is connecting to my machine to cause the modem light > activity? I've tried ps -A and ps -aux but this shows up a lot of info > which makes it difficult to see any particular activity that may be > responsible. > > Is there a bash command (or a GUI app) that will identify what the > connection is and who/ what initiated it, etc.? > > I'm using an up-to-date testing installation. > > Thanks for any help. > > AG > > > -- > To UNSUBSCRIBE, email to debian-user-REQUEST(a)lists.debian.org with a > subject of "unsubscribe". Trouble? Contact listmaster(a)lists.debian.org > Archive: http://lists.debian.org/4BFE377B.3040502(a)gmail.com > |