Hello there ,

How can i add extra security to data packets in NS2 aquasim which developed for underwater propagation. Can i add CDMA/orthogonal codes in NS2 ?

Thanks in advance.

Welcome to LQ.

Some hints ....

Google, ns2 cdma
https://www.google.com/webhp?hl=all&...=en&q=ns2+cdma
Ex 1: The second hit is http://www.krishnagudi.com/wp-conten...7/11/Exp-6.pdf

... Which you can try to include in one of the many AquaSim examples
→ aquasim-examples-12.17.tar.gz
https://drive.google.com/file/d/1xcf...ew?usp=sharing

Ex 2: https://groups.google.com/forum/#!to...rs/9xLEtdecHPU

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Thanks a lot for your quick response.

Google, ns2 cdma
https://www.google.com/webhp?hl=all&...=en&q=ns2+cdma
Ex 1: The second hit is http://www.krishnagudi.com/wp-conten...7/11/Exp-6.pdf
This would be helpful. It doesn't say anything about encryption. I understood they divide the total number of bandwidth in no of users. I just don't get how it can add cdma security as well in the network. Is CDMA already defined in NS2 wireless examples ? because i understand that you have to run this example under ns 2.30/tcl/ex/wireless examples/Exp-6.tcl
I really appreciate if you would tell me there is an additional security features embedded in the system.
Trace File - https://drive.google.com/open?id=1-u...zRtfvdyU2aWR-r

... Which you can try to include in one of the many AquaSim examples
→ aquasim-examples-12.17.tar.gz
https://drive.google.com/file/d/1xcf...ew?usp=sharing
Thanks a lot for all this. If i would define underwater channel parameters in the above Exp-6.tcl and if i run the tcl file, i think something would be wrong as the generated packet are almost 4300 and received packets are 12006 if i use the awk file. I don't understand this. Is that awk file counts ACK as well ?

Ex 2: https://groups.google.com/forum/#!to...rs/9xLEtdecHPU

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Attached Files

Exp-6.txt (2.1 KB, 25 views)

]Welcome to LQ.
Thanks.

Some hints ....

Google, ns2 cdma
https://www.google.com/webhp?hl=all&...=en&q=ns2+cdma
Ex 1: The second hit is http://www.krishnagudi.com/wp-conten...7/11/Exp-6.pdf
i tried to add one more extra layer of security in the code as well. for that i did the necessary step to add security agent to aquasim by following the steps on
https://www.nsnam.com/2015/03/securi...et-in-ns2.html
http://www.engr.iupui.edu/~dskim/tut...ns2/?section=6
http://ocw.snu.ac.kr/sites/default/files/NOTE/7924.pdf
in my case it works well for ns2.35 but could not successful in ns 2.30. (I need to patch that ns 2.30 in order to run in aquasim)

... Which you can try to include in one of the many AquaSim examples
Can you please tell me how can i check the Exp-6.tcl is using any kind of encryption or not, because from my understanding it did not use any security, please correct me if i am wrong.
→ aquasim-examples-12.17.tar.gz
https://drive.google.com/file/d/1xcf...ew?usp=sharing
Thanks.

Ex 2: https://groups.google.com/forum/#!to...rs/9xLEtdecHPU
I did follow the logic and successfully did the bandwidth allocation but i don't know how to add one more security layer at transport layer with encryption.

Re #4 : Please do not quote entire posts. A "one word reference" will do.

There is no encryption for ns2 (that works), except for "Security". ("Security-ns2" is not a real encryption.)

ns3 has aquasim and encryption. ns2 was replaced by ns3 years ago.
. https://www.google.com/webhp?hl=all&...&q=ns3+aquasim
. https://www.google.com/webhp?hl=all&...ns3+encryption


Re #3

"ns 2.30/tcl/ex/wireless examples/Exp-6.tcl" :
Aquasim examples can be run from any location.
Default is like /home/name/ns2/AquaSim/uw_tcl-examples-12.17/
→ aquasim-examples-12.17.tar.gz
https://drive.google.com/file/d/1xcf...ew?usp=sharing

And you actually don't need ns-2.30/. Can be deleted when 'ns' is saved to /usr/local/bin/
... See "ns2-INFO".

CDMA : I guess I have passed all the information that I can provide.

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Attached Files

ns2-INFO.txt (1.3 KB, 23 views)

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