Analysis Skills, Architectural Design, Authentication, BGP, BIND (Berkeley Internet Name Domain) DNS Server software, Bash Scripting, CISCO PIX Firewall, Cisco ASA (Adaptive Security Appliance), Cisco Catalyst Switches, Cisco Network Hardware, Cisco Routers, Cisco Switches, Cross-Domain Solutions (CDS), Cryptography, Customer Support/Service, DHCP (Dynamic Host Configuration Protocol), DNS (Domain Name System), Documentation, EIGRP (Enhanced IGRP), Environmental Regulations, Firewalls, HSRP (Hot Standby Router Protocol), HTTP (HyperText Transport Protocol), IP (Internet Protocol) Routing, Identify Issues, Information Technology & Information Systems, Information Technology Consulting, Internet/Online Service, Linux Networks, Local Area Network (LAN), MPLS (Multi-Protocol Label Switching), Mentoring, NAT (Network Address Translation), NMap, Network Administration/Management, Network Architecture/Engineering, Network Configuration Management, Network Connectivity, Network Design, Network Monitoring, Network Routers, Network Security, Network Support, Network Switching, On Call, Open Shortest Path First Protocol (OSPF), OpenSSL, Operations Management, Performance Analysis, Performance Tuning/Optimization, Problem Solving Skills, Protocol Analysis, Python Programming/Scripting Language, RADIUS (Remote Authentication Dial-In User Service), Reverse Engineering, SMTP (Simple Mail Transfer Protocol), SSH (Secure Shell), SSL-TLS (Secure Socket Layer - Transport Layer Security), Spanning Tree Protocols, System Integration (SI), TCP (Transmission Control Protocol), TCP/IP (Transmission Control Protocol/Internet Protocol), TFTP (Trivial File Transfer Protocol), VLAN (Virtual Local Area Network), VLAN Trunking Protocol (VTP), VPLS (Virtual Private LAN Service), VPN (Virtual Private Network), White Papers, Wide Area Network (WAN), tcpdump