1. This work was supported by the TRUST Center (NSF award number CCF-0424422) Emulation of Abilene Network using DETER John Mela 1, Blaine Nelson 2, Saurabh Amin 2, Suzanna Schmeelk 2, Prof. S. Shankar Sastry 2 Abstract Security of networked computing systems has become increasingly paramount. The daily function of society hinges on the safe and reliable operation of these infrastructures. The detection of attack traffic on network infrastructures necessitates experimentation on accurately modeled emulations. In this research, a model of the Abilene topology was created using the DETERlab testbed. Network traffic flows were emulated on top of this model. The specification of Abilene's traffic flows could be used to represent the network's background traffic in scale. As this model more closely imitates Abilene both in structure and behavior, a door to extensive experimentation is opened. Method The creation of our topology involved 5 steps 1.Created Abilene backbone in Network Simulator(NS) using DETERlab 2.Paired backbone routers with external interface as illustrated in Figure 2. 3.Links are specified individually for unique throughput and latency customization 4.Converted Abilene routing matrix to NS syntax 5.Confirmed manual traffic routes #!/usr/local/bin/bash NODES="ATLAng ATM5 CHINng DNVRng HSTNng IPLSng_ KSCYng LOSAng NYCMng SNVAng STTLng WASHng_ ATLAext ATM5ext CHINext DNVRext HSTNext_ IPLSext KSCYext LOSAext NYCMext SNVAext STTLext WASHext" for NODE in $NODES do for HOST in $NODES do echo "$NODE is pinging: $HOST" ssh -o "StrictHostKeyChecking no" $NODE.jnmela-abilene.trust-reu_ "ping -q -c 2 $HOST || echo_ "ERROR: $NODE FAILED TO CONTACT $HOST" >> brokenroutes.dump" done exit 0 Route Verification Backbone Paired with External Interfaces # Representation of Abilene Topology in NS set ns [new Simulator] source tb_compat.tcl #Create the backbone nodes foreach node { ATLAng ATM5 CHINng DNVRng HSTNng IPLSng_ KSCYng LOSAng NYCMng SNVAng STTLng WASHng control } { #Create new node set $node [$ns node] #Define the OS image tb-set-node-os [set $node] Ubuntu804-STD #Startup scripts tb-set-node-startcmd [set $node]_ "sudo python /share/seer/v160/experiment-setup.py Basic" } Route 1 Route 2.. Route N Python Routing Matrix to NS $src add-route.... $src add-route.. Topology Specification Recommendations for Future Study Emulate link throughputs and latencies Implement background traffic generation Figure 1 Figure 2 Implementation Figure 4 Conclusion Our research attained three goals. The first was the construction of the Abilene topology using DETER. This was accomplished by specifying the backbone routers, external interfaces, and link information for each node. The second was the conversion of an Abilene routing matrix into NS syntax. We used python to read the routing information from the matrix, confirm that each route was complete, and output the NS syntax to specify these routes in DETER. Third, we verified that the implemented routes functioned in our emulation using bash scripting and the ping utility. 1 Youngstown State University, 2 University of California Berkeley Figure 3