[Users] TLS: what is encrypted in TLS?

[Ferianto siregar]

Dear Witt,
   
  Thank you very much for your help before.
  Witt, may I ask you again,please?
  I have downloaded ssldump.tar.gz packet and installed it.
  As the INSTALL note in ssldump, I have installed libcap.tar.gz (from www.tcpdump.org) and openssl.
  I have installed it by using commands:
  # tar -zxvf ssldump-0.9b3.tar.gz
  # cd ssldump-0.9b3
  # ./configure --with-openssl
  #make
  #make install
   
  All installation process can run sucessfully (nothing error message shown).
  But, why when I try to run ssldump, I got nothing. There is any mesage shown when I tried to run
  #ssldump -i eth0
   
  What happens? Did I do wrong installation process? or I have missed something?
   
  I do hope you can help me.Please help me..
   
  Thank you very much for your help
   
  Regards,
   
  Ferianto
   
  Note:
  Actually, when I run ./configure --with-pcap, I got error message. The error message said that there is no pcap file. Why?
  Is lipcap packet that I got from www.tcpdump.org (as I read from ssldump INSTALL), same with pcap file ? or I have to download pcap ?
  

Steffen Witt <witt.steffen at googlemail.com> wrote:
  Hello Ferianto,

TLS is used for encrypting your SIP signaling, not the media data.
You should install "ssldump" on your server to see each step of the
TLS handshake.

Maybe you have a closer look to this short SSL tutorial:
http://www.eventhelix.com/RealtimeMantra/Networking/SSL.pdf


Best regards
Steffen



2006/10/30, Ferianto siregar :
> Dear all,
>
> Thank you for this chance.
> All, I have tried to learn about how can TLS can secure communication in
> VoIP.
> I must to understand it in order to responsible my openser server (working)
> with TLS to my lecturer.
> But, I have still doubt.
> Actually, what is encrypted in TLS system so the communication become
> secure? Does it encrypt the data (voise packet)? or The traffic (so the
> sniffer can not get the data? OR anything else?
>
> I do hope anybody can help me :)
> Thanks,
>
>
> Ferianto
>
>
> Note: I cryptography tutorials, I read that the cryptography system secure
> the message (text) by encrypting it using public key and private key. So,
> How about TLS in VoIP?
>
>
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