Hi all, I want to be able to inspect and alter packets generated from a particular ad hoc routing protocol, like AODV, and also be able to interact with the routing agent for a malicious library I'm thinking of implementing for the simulation of the effect of malicious activity on large ad-hoc networks. I'm just wondering if anyone can give me advice on the best way of going about this - I've designed a new 'Behaviour' class: each routing agent has a Behaviour object attached onto them but Im just wondering how I would go about implementing certain attacks, for example a RREQ flood attack. I could set a variable in the Behaviour object within the node itself, and get the AODV code to read whether a variable, like 'toFlood' in the Behaviour class is set to true or false to queue up RREQ's for each time slot, but Im not sure whether this is the most efficient way of doing things. Especially when you consider other attacks, for example altering routing packets as they go through a particular node, I'd really like to be able to alter them on the fly, by reading a packet, getting its type (i.e. RREQ) and altering it's contents! Certain attacks are easily implemented with the current Behaviour class, like dropping RREQs, we simply get the AODV routing agent to read the Behaviour 'isDropping' variable, and if its true then we simply return out of the 'send' procedure without forwarding, but this means the code is dependant on the actual routing protocol in use and I would really like to make it as independent as possible!
Any help/feedback would be really appreciated! Many Thanks Paul Kiddie 1st Year PhD Electronic & Electrical Engineering School of Electronic, Electrical & Computer Engineering, University Of Birmingham, Edgbaston, Birmingham, B15 2TT -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED] Sent: 15 June 2006 01:00 To: ns-users@ISI.EDU Subject: Ns-users Digest, Vol 30, Issue 15 Send Ns-users mailing list submissions to ns-users@isi.edu To subscribe or unsubscribe via the World Wide Web, visit http://mailman.isi.edu/mailman/listinfo/ns-users or, via email, send a message with subject or body 'help' to [EMAIL PROTECTED] You can reach the person managing the list at [EMAIL PROTECTED] When replying, please edit your Subject line so it is more specific than "Re: Contents of Ns-users digest..." Today's Topics: 1. EURANE - handover ? (Anoop Ramamurthy) 2. Re: help (lakshmi muddana) 3. Re: persons well-versed in ns-2 (lakshmi muddana) 4. simple-wireless.tcl is not running on ns2.28 (Srirupa Dasgupta) 5. simple-wireless.tcl is not running on ns2.28 (Srirupa Dasgupta) 6. what's "scaling factor" in inet (Htira Walid) 7. termination of transmission (erhan gülhan) 8. termination of transmission (erhan gülhan) 9. jitter in a new MANET routing protocol (Alexandra Cioroianu) 10. Re: jitter in a new MANET routing protocol (Francisco J. Ros) 11. Re: simple-wireless.tcl is not running on ns2.28 (Pedro Vale Estrela) 12. Problem with emulation ([EMAIL PROTECTED]) 13. Re: Clearing a queue at a node in ns-2 (Pedro Vale Estrela) ---------------------------------------------------------------------- Message: 1 Date: Wed, 14 Jun 2006 08:59:41 +0530 From: Anoop Ramamurthy <[EMAIL PROTECTED]> Subject: [ns] EURANE - handover ? To: ns-users@ISI.EDU Message-ID: <[EMAIL PROTECTED]> Content-Type: text/plain; charset="US-ASCII" Hi ppl , Its mentioned that eurane doesnt support handover functionality. I still want to know if there are some ways to simulate handover scenario in umts ? ______________________________________________________________________ ------------------------------ Message: 2 Date: Wed, 14 Jun 2006 07:51:12 +0100 (BST) From: lakshmi muddana <[EMAIL PROTECTED]> Subject: Re: [ns] help To: ns-users@ISI.EDU Message-ID: <[EMAIL PROTECTED]> Content-Type: text/plain; charset=iso-8859-1 dear all, somebody kindly help me to add the new protocol PING given in the tutorial. problem faced is : after creating ping.h & ping.cc and nessary changes when given "make " at prompt, it says no destinations. Send instant messages to your online friends http://in.messenger.yahoo.com <br><br> Stay connected with your friends even when away from PC. Link: http://in.mobile.yahoo.com/new/messenger/ ------------------------------ Message: 3 Date: Wed, 14 Jun 2006 08:06:18 +0100 (BST) From: lakshmi muddana <[EMAIL PROTECTED]> Subject: Re: [ns] persons well-versed in ns-2 To: ns-users@ISI.EDU Message-ID: <[EMAIL PROTECTED]> Content-Type: text/plain; charset=iso-8859-1 dear all, i would like to know the persons well-versed in ns-2 in Andhra Pradesh. Send instant messages to your online friends http://in.messenger.yahoo.com <br><br> Stay connected with your friends even when away from PC. Link: http://in.mobile.yahoo.com/new/messenger/ ------------------------------ Message: 4 Date: 14 Jun 2006 07:15:38 -0000 From: "Srirupa Dasgupta" <[EMAIL PROTECTED]> Subject: [ns] simple-wireless.tcl is not running on ns2.28 To: ns-users@ISI.EDU Message-ID: <[EMAIL PROTECTED]> Content-Type: text/plain; charset=iso-8859-1 Dear friend, please help me to run wireless scripts on ns2 . i am typing the following command: ns simple-wireless.tcl the error messafe that i am getting is as follows: num_nodes is set 3 warning: Please use -channel as shown in tcl/ex/wireless-mitf.tcl INITIALIZE THE LIST xListHead Loading connection pattern... couldn't read file "../mobility/scene/cbr-3-test": no such file or directory while executing "source.orig ../mobility/scene/cbr-3-test" ("uplevel" body line 1) invoked from within "uplevel source.orig [list $fileName]" invoked from within "if [$instance_ is_http_url $fileName] { set buffer [$instance_ read_url $fileName] uplevel eval $buffer } else { uplevel source.orig [list $fileName] ..." (procedure "source" line 8) invoked from within "source $val(cp)" (file "wireless1.tcl" line 121) what is this? please help ------------------------------ Message: 5 Date: 14 Jun 2006 07:22:41 -0000 From: "Srirupa Dasgupta" <[EMAIL PROTECTED]> Subject: [ns] simple-wireless.tcl is not running on ns2.28 To: ns-users@ISI.EDU Message-ID: <[EMAIL PROTECTED]> Content-Type: text/plain; charset=iso-8859-1 Dear friend, please help me to run wireless scripts on ns2 . i am typing the following command: ns simple-wireless.tcl the error messafe that i am getting is as follows: num_nodes is set 3 warning: Please use -channel as shown in tcl/ex/wireless-mitf.tcl INITIALIZE THE LIST xListHead Loading connection pattern... couldn't read file "../mobility/scene/cbr-3-test": no such file or directory while executing "source.orig ../mobility/scene/cbr-3-test" ("uplevel" body line 1) invoked from within "uplevel source.orig [list $fileName]" invoked from within "if [$instance_ is_http_url $fileName] { set buffer [$instance_ read_url $fileName] uplevel eval $buffer } else { uplevel source.orig [list $fileName] ..." (procedure "source" line 8) invoked from within "source $val(cp)" (file "wireless1.tcl" line 121) what is this? please help ------------------------------ Message: 6 Date: Wed, 14 Jun 2006 02:48:12 -0500 From: "Htira Walid" <[EMAIL PROTECTED]> Subject: [ns] what's "scaling factor" in inet To: ns-users@ISI.EDU Message-ID: <[EMAIL PROTECTED]> Content-Type: text/plain; charset="iso-8859-15" Hello, I'm a beginner with ns. Please, Can someone explain to me the concept of scaling factor in inet tool? Thanks a lot. -- _______________________________________________ Search for businesses by name, location, or phone number. -Lycos Yellow Pages http://r.lycos.com/r/yp_emailfooter/http://yellowpages.lycos.com/default.asp?SRC=lycos10 ------------------------------ Message: 7 Date: Wed, 14 Jun 2006 09:44:39 +0000 From: "erhan gülhan" <[EMAIL PROTECTED]> Subject: [ns] termination of transmission To: ns-users@ISI.EDU Message-ID: <[EMAIL PROTECTED]> Content-Type: text/plain; format=flowed Hi! I want to terminate the transmission after finishing sending some quantity of data . In my tcl program termination of transmission like: $ns at 4.5 "$ns detach-agent $n0 $tcp ; $ns detach-agent $n2 $sink" $ns at 5.0 "finish" Naturally program finishes at every 4.5 second. However i want to terminate the transmission , rexample after 10 Mb data transmission. What can I do for it. I'm waiting your respond . Regards. Erhan _________________________________________________________________ Don't just search. Find. Check out the new MSN Search! http://search.msn.click-url.com/go/onm00200636ave/direct/01/ ------------------------------ Message: 8 Date: Wed, 14 Jun 2006 09:45:33 +0000 From: "erhan gülhan" <[EMAIL PROTECTED]> Subject: [ns] termination of transmission To: ns-users@ISI.EDU Message-ID: <[EMAIL PROTECTED]> Content-Type: text/plain; format=flowed Hi! I want to terminate the transmission after finishing sending some quantity of data . In my tcl program termination of transmission like: $ns at 4.5 "$ns detach-agent $n0 $tcp ; $ns detach-agent $n2 $sink" $ns at 5.0 "finish" Naturally program finishes at every 4.5 second. However i want to terminate the transmission , rexample after 10 Mb data transmission. What can I do for it. I'm waiting your respond . Regards. Erhan _________________________________________________________________ Express yourself instantly with MSN Messenger! Download today - it's FREE! http://messenger.msn.click-url.com/go/onm00200471ave/direct/01/ ------------------------------ Message: 9 Date: Wed, 14 Jun 2006 03:54:02 -0700 (PDT) From: Alexandra Cioroianu <[EMAIL PROTECTED]> Subject: [ns] jitter in a new MANET routing protocol To: ns-users@ISI.EDU Message-ID: <[EMAIL PROTECTED]> Content-Type: text/plain; charset=iso-8859-1 Hello everybody! I'm working with ns-2.29 on Mandriva 2006 and i'm working on a new protocol implementation, following the tutorial "Implementing a New Manet Unicast Routing Protocol in NS2" by Francisco Ros and Pedro Ruiz. At the paragraph 4.3.5 it shows the implementation of send_protoname_pkt() function and it shows how to send a packet introducing some jitter. My question is: why do they introduce jitter? Is it absolutely necessary? Could the packet be sent without jitter and how? I know that jitter is the variation in time between packets ariving..... isn't it more efficient to send packets at a constant interval? Please someone explain this to me, it is VERY IMPORTANT. Thank you in advance! Regards, Alexandra Alexandra Cioroianu __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com ------------------------------ Message: 10 Date: Wed, 14 Jun 2006 13:33:13 +0200 From: "Francisco J. Ros" <[EMAIL PROTECTED]> Subject: Re: [ns] jitter in a new MANET routing protocol To: ns-users@ISI.EDU Message-ID: <[EMAIL PROTECTED]> Content-Type: text/plain; charset="iso-8859-1" Hello, On Wednesday 14 June 2006 12:54, Alexandra Cioroianu wrote: > Hello everybody! > I'm working with ns-2.29 on Mandriva 2006 and i'm working on a new > protocol implementation, following the tutorial "Implementing a New > Manet Unicast Routing Protocol in NS2" by Francisco Ros and Pedro > Ruiz. At the paragraph 4.3.5 it shows the implementation of > send_protoname_pkt() function and it shows how to send a packet > introducing some jitter. My question is: why do they introduce jitter? > Periodic messages sent by neighbors are likely to get synchronized and therefore the collision probability increases. Introducing a small random jitter reduces that probability. > Is it absolutely necessary? > Not at all. > Could the packet be sent without jitter and how? > Of course, just put 0.0 instead of JITTER when scheduling the sending of the packet. Regards, fran > I know that jitter is the > variation in time between packets ariving..... isn't it more efficient > to send packets at a constant interval? Please someone explain this to > me, it is VERY IMPORTANT. Thank you in advance! Regards, Alexandra > > > > Alexandra Cioroianu > > __________________________________________________ > Do You Yahoo!? > Tired of spam? Yahoo! Mail has the best spam protection around > http://mail.yahoo.com ------------------------------ Message: 11 Date: Wed, 14 Jun 2006 14:10:07 +0100 From: "Pedro Vale Estrela" <[EMAIL PROTECTED]> Subject: Re: [ns] simple-wireless.tcl is not running on ns2.28 To: "'Srirupa Dasgupta'" <[EMAIL PROTECTED]>, <ns-users@ISI.EDU> Message-ID: <[EMAIL PROTECTED]> Content-Type: text/plain; charset="US-ASCII" Search for the /mobility/scene direcotories in your NS2 tree, and put the example alosnside it, eg: Snenario files in /ns2/tcl/ex/mobility/scene Put the script in /ns2/tcl/ex/mydir/ Pedro Vale Estrela > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On > Behalf Of Srirupa Dasgupta > Sent: quarta-feira, 14 de Junho de 2006 8:23 > To: ns-users@ISI.EDU > Subject: [ns] simple-wireless.tcl is not running on ns2.28 > > > > > > Dear friend, > please help me to run wireless scripts on ns2 . > i am typing the following command: > ns simple-wireless.tcl > the error messafe that i am getting is as follows: > num_nodes is set 3 > warning: Please use -channel as shown in tcl/ex/wireless-mitf.tcl > INITIALIZE THE LIST xListHead Loading connection pattern... > couldn't read file "../mobility/scene/cbr-3-test": no such file or > directory > while executing > "source.orig ../mobility/scene/cbr-3-test" > ("uplevel" body line 1) > invoked from within > "uplevel source.orig [list $fileName]" > invoked from within > "if [$instance_ is_http_url $fileName] { set buffer [$instance_ > read_url $fileName] uplevel eval $buffer } else { uplevel source.orig > [list $fileName] ..." > (procedure "source" line 8) > invoked from within > "source $val(cp)" > (file "wireless1.tcl" line 121) > what is this? > please help ------------------------------ Message: 12 Date: Wed, 14 Jun 2006 18:23:27 +0200 From: "[EMAIL PROTECTED]" <[EMAIL PROTECTED]> Subject: [ns] Problem with emulation To: "ns-users" <ns-users@ISI.EDU> Message-ID: <[EMAIL PROTECTED]> Content-Type: text/plain; charset=iso-8859-1 Hi list! I'm having some problems using the emulation examples. I try to use ns-2 as a forwarder: real host A send a ping to real host B, passing through the simulator, C. After adding the correct route to A and B to use C as a gateway, I use this script (because the one with ns-2 doesn't work at all) # Inside the simulator # # node(5) # / \ # / \ # node(2) node(1) set ns [new Simulator] $ns use-scheduler RealTime set f [open out.tr w] $ns trace-all $f set nf [open out.nam w] $ns namtrace-all $nf # Create the nodes set n1 [$ns node]; #reading from real network set n2 [$ns node]; #writing to the real network set n5 [$ns node]; #nothing important # Configure the entry node set bpf1 [new Network/Pcap/Live]; # Create the bpf set dev1 [$bpf1 open readonly eth0]; # Open the device $bpf1 filter "icmp and host 192.168.0.3";# put the filter set tap1 [new Agent/Tap]; # Create the Tap Agent $tap1 network $bpf1; # Connect bpf to Tap Agent $ns attach-agent $n1 $tap1; # Attach Tap Agent to the node(1) # Configure the exit node set ipnet [new Network/IP]; # Create a Network agent $ipnet open writeonly set tap2 [new Agent/Tap]; # Create a Tap Agent $tap2 network $ipnet; # Connect network agent to tap agent $ns attach-agent $n2 $tap2; # Attach agent to the node. # Connect the agents. $ns simplex-connect $tap1 $tap2 #Just for debug puts "tap1: $tap1" puts "tap2: $tap2" puts "Node1: $n1" puts "Node2: $n2" puts "Node5: $n5" puts "bpf1: $bpf1" puts "ipnet: $ipnet" # Setup connections between the nodes $ns simplex-link $n1 $n2 10Mb 5ms DropTail $ns simplex-link $n5 $n2 10Mb 5ms DropTail $ns at 10 "finish" proc finish {} { global ns f nf $ns flush-trace close $f close $nf exit 0 } $ns run If I run this script, the packets are forwarded, but the simulator begins to create a very big traffic of dup packet: ... TapAgent(_o24): sent packet (sz: 60) TapAgent(_o24): sent packet (sz: 60) TapAgent(_o24): sent packet (sz: 60) TapAgent(_o24): sent packet (sz: 60) TapAgent(_o24): sent packet (sz: 60) TapAgent(_o24): sent packet (sz: 60) TapAgent(_o24): sent packet (sz: 60) TapAgent(_o24): sent packet (sz: 60) 4.835407: Tap(_o21): recvpkt, cc:60 4.835407: Tap(_o21): recvpkt, writing to target: _o13 4.835578: Tap(_o21): recvpkt, cc:60 4.835578: Tap(_o21): recvpkt, writing to target: _o13 4.835698: Tap(_o21): recvpkt, cc:60 4.835698: Tap(_o21): recvpkt, writing to target: _o13 4.835807: Tap(_o21): recvpkt, cc:60 4.835807: Tap(_o21): recvpkt, writing to target: _o13 4.835976: Tap(_o21): recvpkt, cc:60 4.835976: Tap(_o21): recvpkt, writing to target: _o13 4.836086: Tap(_o21): recvpkt, cc:60 ... I really don't understand why. And if I use IPTap for the 2 tap I get: IPTapAgent(_o21): sendpkt called while in read-only mode! 0.770541: IPTapAgent(_o21): recvpkt, cc:1 Thank you very much for any idea/suggestion/tip. Paolo Carpo P.S. Sorry for the poor english ------------------------------ Message: 13 Date: Wed, 14 Jun 2006 17:37:02 +0100 From: "Pedro Vale Estrela" <[EMAIL PROTECTED]> Subject: Re: [ns] Clearing a queue at a node in ns-2 To: <[EMAIL PROTECTED]> Cc: ns-users@ISI.EDU Message-ID: <[EMAIL PROTECTED]> Content-Type: text/plain; charset="US-ASCII" > But this doesn't work. Uptarget_ gives me an NsObject instead of a LL > object... try casting it to an c++ LL object. Mind that this will only be a quick fix to see if it works - its terrible programming ! Pedro Vale Estrela > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] > Sent: sexta-feira, 9 de Junho de 2006 23:33 > To: Pedro Vale Estrela > Cc: ns-users@ISI.EDU > Subject: RE: [ns] Clearing a queue at a node in ns-2 > > Whoah, that is too complicated for me. I don't know ns-2 very well. > What do you mean by: > "make a pointer to the ITF" -- doesn't it have a pointer (uptarget_)? > According to the diagram on pg 145 I should do uptarget_ > ->downtarget_- > >reset() > since > uptarget will take me to the LL, downtarget will take me to the IFq, > and reset will reset the queue for that node. > > But this doesn't work. Uptarget_ gives me an NsObject instead of a LL > object... > > > > On Fri, 9 Jun 2006, Pedro Vale Estrela wrote: > > > > > Yes, > > > > http://www.isi.edu/nsnam/ns/doc/ns_doc.pdf > > pag 145, > > > > - at your C++ MAC module, make a pointer to the ITF; > > - either search the C++ NODE methods for getting the pointer > > reference you need (you want the reverse of the downtarget_ on the > > ITF; > for > > making this, search the code that sets the downtarget_ variable in > > C++ > in > > the ITF; (tip: use DDD, put a breakpoint somewhere in mobilenode.cc) > > in that moment, set something like: > > downtarget_->my_ITF_ = this; > > > > - then at the appropriate time, call reset() of it. > > my_ITF->reset(); > > > > Of course that this is not good C++ Object-Orientation practices, > > but > use it > > to simply try your ideia; if it works nice, then make the same thing > with > > provte variables and public set/get methods. > > > > > > You can also perform the same trick by: > > Calling TCL / searching the ITF object you want based on the > > current > MAC > > object / call reset of it. The benefit is that you can fine tune > > this > method > > without recompiling NS2 each time. > > > > > > If this works, please put this on the NS2 WIKI! > > Pedro Vale Estrela > > > > > >> Hi ns, > >> > >> I'd like to clear a node's queue from the mac-layer in my > >> simulation > after > >> I've received a certain packet. Can I call a PacketQueue function > >> like "reset()" from the mac layer? If not, how would I clear the queue? > >> > >> Thanks! > >> > >> Kathy > >> > >> > >> > > > > > > > ------------------------------ _______________________________________________ Ns-users mailing list Ns-users@isi.edu http://mailman.isi.edu/mailman/listinfo/ns-users End of Ns-users Digest, Vol 30, Issue 15 ****************************************
