human: Given a node-centered hypergraph: <hypergraph>, where nodes represent papers and hyperedges represent sets of papers co-cited by a source paper.

Details of the hypergraph:
Center node: "netfence preventing internet denial of service from inside out"
  Abstract: Denial of Service (DoS) attacks frequently happen on the Internet, paralyzing Internet services and causing millions of dollars of financial loss. This work presents NetFence, a scalable DoS-resistant network architecture. NetFence uses a novel mechanism, secure congestion policing feedback, to enable robust congestion policing inside the network. Bottleneck routers update the feedback in packet headers to signal congestion, and access routers use it to police senders' traffic. Targeted DoS victims can use the secure congestion policing feedback as capability tokens to suppress unwanted traffic. When compromised senders and receivers organize into pairs to congest a network link, NetFence provably guarantees a legitimate sender its fair share of network resources without keeping per-host state at the congested link. We use a Linux implementation, ns-2 simulations, and theoretical analysis to show that NetFence is an effective and scalable DoS solution: it reduces the amount of state maintained by a congested router from per-host to at most per-(Autonomous System).

Connected through hyperedge HE-1 (induced by source paper "anonymizing masses practical light weight anonymity at the network level"):
  with members:
    - "taranet traffic analysis resistant anonymity at the network layer"
    - "a multi perspective analysis of carrier grade nat deployment"
    - "beyond counting new perspectives on the active ipv4 address space"
    - "hornet high speed onion routing at the network layer"
    - "dovetail stronger anonymity in next generation internet routing"
    - "active internet traffic filtering real time response to denial of service attacks"

Connected through hyperedge HE-2 (induced by source paper "umbrella enabling isps to offer readily deployable and privacy preserving ddos prevention services"):
  with members:
    - "middlepolice fine grained endpoint driven in network traffic control for proactive ddos attack mitigation"
    - "mirage towards deployable ddos defense for web applications"
    - "active internet traffic filtering real time response to denial of service attacks"

Connected through hyperedge HE-3 (induced by source paper "middlepolice fine grained endpoint driven in network traffic control for proactive ddos attack mitigation"):
  with members:
    - "mirage towards deployable ddos defense for web applications"
    - "as relationships inference and validation"
    - "active internet traffic filtering real time response to denial of service attacks"

Connected through hyperedge HE-4 (induced by source paper "torpolice towards enforcing service defined access policies in anonymous systems"):
  with members:
    - "stealthy traffic analysis of low latency anonymous communication using throughput fingerprinting"

Connected through hyperedge HE-5 (induced by source paper "fair forwarding accountability for internet reputability"):
  with members:
    - "scion five years later revisiting scalability control and isolation on next generation networks"
    - "active internet traffic filtering real time response to denial of service attacks"

Connected through hyperedge HE-6 (induced by source paper "a resource competitive jamming defense"):
  with members:
    - "interactive communication with unknown noise rate"
    - "competitive mac under adversarial sinr"
    - "vulnerability of lte to hostile interference"
    - "asynchrony and collusion in the n party bar transfer problem"
    - "making evildoers pay resource competitive broadcast in sensor networks"
    - "sybilcontrol practical sybil defense with computational puzzles"
    - "a jamming resistant mac protocol for multi hop wireless networks"

Connected through hyperedge HE-7 (induced by source paper "mirage towards deployable ddos defense for web applications"):
  with members:
    - "active internet traffic filtering real time response to denial of service attacks"

Question: Please tell me which class the center node belongs to. The 40 classes are: cs.NA(Numerical Analysis), cs.MM(Multimedia), cs.LO(Logic in Computer Science), cs.CY(Computers and Society), cs.CR(Cryptography and Security), cs.DC(Distributed, Parallel, and Cluster Computing), cs.HC(Human-Computer Interaction), cs.CE(Computational Engineering, Finance, and Science), cs.NI(Networking and Internet Architecture), cs.CC(Computational Complexity), cs.AI(Artificial Intelligence), cs.MA(Multiagent Systems), cs.GL(General Literature), cs.NE(Neural and Evolutionary Computing), cs.SC(Symbolic Computation), cs.AR(Hardware Architecture), cs.CV(Computer Vision and Pattern Recognition), cs.GR(Graphics), cs.ET(Emerging Technologies), cs.SY(Systems and Control), cs.CG(Computational Geometry), cs.OH(Other Computer Science), cs.PL(Programming Languages), cs.SE(Software Engineering), cs.LG(Machine Learning), cs.SD(Sound), cs.SI(Social and Information Networks), cs.RO(Robotics), cs.IT(Information Theory), cs.PF(Performance), cs.CL(Computation and Language), cs.IR(Information Retrieval), cs.MS(Mathematical Software), cs.FL(Formal Languages and Automata Theory), cs.DS(Data Structures and Algorithms), cs.OS(Operating Systems), cs.GT(Computer Science and Game Theory), cs.DB(Databases), cs.DL(Digital Libraries), cs.DM(Discrete Mathematics). Directly output the class name.

gpt: cs.NI(Networking and Internet Architecture)