[Gzz-commits] gzz/Documentation/misc/hemppah-progradu researc...

[Hermanni Hyytiälä]

CVSROOT:        /cvsroot/gzz
Module name:    gzz
Changes by:     Hermanni Hyytiälä <address@hidden>      03/02/10 09:17:46

Modified files:
        Documentation/misc/hemppah-progradu: research_problems 

Log message:
        More security issues

CVSWeb URLs:
http://savannah.gnu.org/cgi-bin/viewcvs/gzz/gzz/Documentation/misc/hemppah-progradu/research_problems.diff?tr1=1.50&tr2=1.51&r1=text&r2=text

Patches:
Index: gzz/Documentation/misc/hemppah-progradu/research_problems
diff -u gzz/Documentation/misc/hemppah-progradu/research_problems:1.50 
gzz/Documentation/misc/hemppah-progradu/research_problems:1.51
--- gzz/Documentation/misc/hemppah-progradu/research_problems:1.50      Mon Feb 
10 08:20:08 2003
+++ gzz/Documentation/misc/hemppah-progradu/research_problems   Mon Feb 10 
09:17:46 2003
@@ -256,8 +256,10 @@
 Robustness:                            How well system performs under hostile  
        Self-tuning, backup links, use
                                        attacks/in the case of severe failure ? 
        diverse routing paths
                                        
-Quality of Service, QoS:               The system cannot promise the quality 
of        
-                                       service in all cases
+Quality of Service, QoS:               The system cannot promise the quality 
of        If needed, use Network proximity 
+                                       service in all cases                    
        for better network performance
+                                                                               
        (bandwidth, latency, jitter, packet 
+                                                                               
        loss)
                                        
 Data availability:                     Data might be temporary unavailable, or 
lost    Data caching, data replication
                                        permanently
@@ -267,18 +269,18 @@
 Anonymity:                             Anonymity cannot be provided in all     
        Remailers
                                        cases
                        
-Malicious nodes:                       There are malicious nodes in the 
system,        Detect
-                                       how we are able to discover them ?
+Malicious nodes:                       There are malicious nodes in the 
system,        Create invariants for node behaviour,
+                                       how we are able to discover them ?      
        verify invariants
                                        
-Mutual distrust:                       Nobody trust anybody, this is a problem
+Mutual distrust:                       Nobody trust anybody, this is a problem 
        Reputation methods
 
-Lack of motivation to cooperate:       All participants do not behave
+Lack of motivation to cooperate:       All participants do not behave          
        
                                        like they should be, instead they go 
for 
                                        own profit
                                        
-Heterogeneity:                         There are different kind of nodes       
        
-                                       in the system, in light of bandwidth
-                                       and computing power
+Heterogeneity:                         There are different kind of nodes       
        Super peers, cluster (broadcasting),
+                                       in the system, in light of bandwidth    
        additional layer upn DHT, structural
+                                       and computing power                     
        simplicity (DHTs)
                                        
 Network proximity:                     Can we take account the underlying      
        Global Network Positioning, Lighthouse
                                        network's properties better when 
forming        technique, trianqulated heuristics
@@ -300,21 +302,21 @@
                                        is needed for better interoperability 
between
                                        different systems
                                        
-Access Control:                                Can we define access control 
levels
+Access Control:                                Can we define access control 
levels             -                                               -
                                        in peer-to-peer network ?
                                        
-System in flux:                                Nodes join and leave system 
constantly:         Half-life phenomenon
+System in flux:                                Nodes join and leave system 
constantly:         Half-life phenomenon (analysis)
                                        load balancing, efficiency ?
                                        
-Inconsistent behaviour:                        Hostile node could act 
correctly with 
+Inconsistent behaviour:                        Hostile node could act 
correctly with           Public keys, digital signatures                 Not 
practical approach
                                        its neighbors, but incorrectly with 
other
                                                                                
-Hostile groups:                                Joining node may join parallel 
network, 
-                                       formed a group of hostile nodes
+Hostile groups:                                Joining node may join parallel 
network,         Use trusted nodes, based on
+                                       formed a group of hostile nodes         
        history information
                                        
-External threats:                      Viruses, troijans, sniffers
-
-Overlay construction:                  Hostile node controls the construction  
        Cryptography    
+External threats:                      Viruses, troijans, sniffers             
        
+                                                                               
        
+Illegal overlay construction:          Hostile node(s) controls the 
construction       Cryptography    
                                        of the network
 
 at each hop, querier knows that the lookup is supposed to get "closer". The 
querier should check this so that