IP, TCP/UDP, OSPF, BGP, route maps, QoS marking/policing, Firewalls/ACLs, NAT/PAT, wireless LANs (802.11a/b/g), 802.1x, NAC, DHCP, DNS, IPSec, GRE/L2TP tunnels, some MPLS, IP multicast, switching/bridging, spanning tree, VLANs, Ethernet (10-10G), OC3-192 POS, leased line provisioning (56k - DS3), various other WAN/LAN technologies, physical cabling plants Network Analysis and Management Tools - Packet level network analysis with tools (Ethereal, Sniffer, Netscout, NetQos etc.), RMON, various SNMP packages, network documentation methodologies and tools (Visio, NetDraw, Visionael, etc.), Snort/Cisco network intrusion detection/prevention systems (IDS/IPS), network penetration and vulnerability testing tools Operating System and Vendor Knowledge - Cisco, HP, Nortel, and various other network vendors Cisco PIX, Checkpoint, Nokia, iptables, and other firewalls Checkpoint Firewall, Anti-Virus, Anti-Spam, Multiple Unix variations, Linux, FreeBSD, HP/UX, AIX, DG/UX Microsoft Windows NT 3.51,