They should be conversant with VLANs, TCP/IP, Spanning Tree, QoS, BGP, OSPF, multicast, VRF, EIGRP, besides Metro Ethernet and MPLS connectivity, and application layer firewall deployment and fixing. Professionals should be conversant with networking monitoring tools, such as Wireshark or Solarwinds Orion, and WAN optimization appliances. cyber security jobs salary