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Re: Ossim

Subject: Re: Ossim
Date: 21 Sep 2005 15:02:49 -0000

Hi!                                                                             
                                                     
I'm an It engineering student co Politecnico di Milano. I'm studying ids 
correlation for my thesis                                   
and I'm now working on ossim. I think it's a very interesting tool, although it 
has some problems:                                   
1. lack of complete documentation                                               
                                                     
2. server (which implements correlation) c source code completely obscure: not 
a single comment in all                               
the source code, nor a single doc about implementation. Agent and Framework are 
better commented                                     
(and they're in python, perl and php).                                          
                                                     
3. difficult installation (except for debian or fedora users); you have 
precompiled binaries, but                                    
building from source is a pain (you have to patch other tools as well) and 
badly documented.                                         
4. not portable (server doesn't work well on *bsd)                              
                                                     
Moreover, i think they should have used pure idmef, not a different 
implementation.                                                  
Anyway, if you can get it work, it's really powerful imho. I think correlation 
engine could be                                       
empowered (i'm working on that) because it's composed by a simple fsa 
implementation (you have to manually                           
insert all possible event chain) and a very simple anomaly algorithm (calm).    
                                                     
This is my impression, and I'd really like to know other's too.                 
                                                     
I'd like to know if someone's tried to work on server sources, and if he's got 
some documentation                                    
about this.                                                                     
                                                     
Regards                                                                         
                                                     
Giorgio Luciani   

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