Network Security

RequirementsFORMAL REQUIREMENTS: course of Local Area Networks.



  • Network security: aspects, categories, definitions, goals, policies
  • ISO OSI; security models (DiD, MLS)
  • Cryptography: definitions; symmetric: substitution, transposition, block ciphers: modes, DES, 3DES, IDEA, AES), asymmetric: public/private key, RSA, ElGamal; Diffie-Helman key exchange algorithm; digital signature: CA; user authentication algorithms
  • VPNs: L2:L2TP, L3:IPSec, L4:SSL/TLS
  • Network attacks: phases: reconnaisance, exploit, propagation;
  • Types: reconnaissance, DoS, protocols/systems discrepancies/weakness
  • Viruses, worms, botnets
  • IDS/IPS systems
  • Routing security
  • Software bugs: buffer overflow attacks


  • Network devices and their security functions
  • Stateless and statefull firewall (sessions)
  • Junos
  • Routing instances, security zones, interfaces
  • Security policies, local traffic
  • Network attacks (reconnaissance, DoS, protocol discrepancies)
  • Firewall authentication
  • NAT
  • IPSec VPN
  • Network redundancy (High Availability)


RFC documentation


USOSweb »