Cisco Catalyst 9200L Switch With Cables Connected

Networking

Designing, securing, and optimizing networks to keep data flowing seamlessly and efficiently.

Skills & Technologies

Networks

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Cisco, Network Configuration, and Management Skills

  • Cisco Hardware & Operating Systems
    • Cisco IOS & IOS-XE:
      • Configuring and managing Cisco routers and switches using the CLI.
      • Upgrading firmware and managing IOS images.
      • Implementing best practices for switch security and hardening.
    • Cisco Collector (Smart Net Total Care, CSPC):
      • Deploying and configuring Cisco Collector for network device inventory and lifecycle management.
      • Integrating Cisco Smart Licensing for compliance and support contract tracking.
  • Network Switching (Layer 2)
    • Configuring VLANs and trunking using 802.1Q.
    • Implementing Spanning Tree Protocol (STP, RSTP, MSTP) for loop prevention.
    • Setting up port security, MAC filtering, and 802.1X authentication.
    • Configuring EtherChannel and Link Aggregation Control Protocol (LACP, PAgP).
    • Implementing Private VLANs and VLAN ACLs for enhanced security.
  • Network Routing (Layer 3)
    • Configuring and troubleshooting static and dynamic routing protocols:
      • OSPF (single and multi-area)
      • EIGRP (including named mode)
      • BGP (peering, route filtering, and policy-based routing)
      • RIP (legacy environments)
    • Implementing Inter-VLAN Routing using SVIs and Layer 3 switches.
    • Configuring First Hop Redundancy Protocols (HSRP, VRRP, GLBP) for high availability.
    • Implementing Route Redistribution and Summarization.
  • Advanced Network Features & Services
    • Configuring and optimizing Quality of Service (QoS) for VoIP and high-priority traffic.
    • Implementing ACLs for security and traffic filtering.
    • Deploying Network Address Translation (NAT) and Port Address Translation (PAT).
    • Setting up GRE and IPSec VPN tunnels between Cisco devices.
  • Network Security & Monitoring
    • Implementing AAA (Authentication, Authorization, Accounting) with TACACS+ and RADIUS.
    • Configuring syslog and SNMP for network monitoring and alerting.
    • Managing Cisco TrustSec for role-based access control.
    • Conducting packet analysis using SPAN/RSPAN/ERSPAN for network diagnostics.
  • Network Redundancy & High Availability
    • Deploying Multi-Chassis EtherChannel (MEC) for high availability.
    • Configuring redundant uplinks with FlexLinks and STP optimizations.
    • Implementing WAN redundancy using dual-homed BGP or HSRP/VRRP failover.
  • Troubleshooting & Performance Optimization
    • Diagnosing network issues using show and debug commands.
    • Performing route and packet tracing with traceroute, ping, and netflow.
    • Optimizing spanning-tree topology for rapid convergence.
    • Analyzing routing table inconsistencies and fixing asymmetric routing.

NPS

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Network Policy Server

  • Authentication, Authorization, and Accounting (AAA)
    • Configuring AAA policies to enforce network access control.
    • Implementing centralized authentication and authorization for network devices.
    • Managing AAA authentication logs for auditing and security compliance.
    • Integrating AAA with Active Directory (AD) for user and group-based access policies.
  • Microsoft Network Policy Server (NPS)
    • Installing and configuring NPS as a RADIUS server for authentication.
    • Setting up NPS policies to control access for wired, wireless, and VPN clients.
    • Integrating NPS with AD for user authentication and group-based access.
    • Configuring NPS logging and event monitoring for troubleshooting and auditing.
  • 802.1X Network Access Control
    • Implementing 802.1X authentication for wired and wireless networks.
    • Configuring RADIUS authentication for network switches, access points, and VPN concentrators.
    • Deploying NPS as a RADIUS proxy to forward authentication requests.
    • Integrating Network Access Protection (NAP) with 802.1X for health compliance policies.
    • Managing Supplicant Configuration on client devices (Windows, macOS, and Linux).
  • RADIUS Authentication & Authorization
    • Deploying RADIUS-based authentication for network infrastructure (switches, routers, firewalls).
    • Configuring RADIUS clients and shared secrets for secure communication.
    • Setting up RADIUS attributes and policies for role-based access control (RBAC).
    • Implementing Certificate-Based Authentication (EAP-TLS, PEAP) for enhanced security.
  • Active Directory Integration
    • Connecting NPS with Active Directory for user authentication and group policy enforcement.
    • Implementing LDAP and Kerberos authentication for network devices.
    • Enforcing conditional access policies based on AD groups and security roles.
    • Managing Multi-Factor Authentication (MFA) integration with NPS and RADIUS.
  • Secure Network Access Control
    • Implementing Role-Based Access Control (RBAC) with NPS policies.
    • Configuring Guest VLANs and dynamic VLAN assignment using 802.1X.
    • Enforcing device compliance checks before granting network access.
  • Troubleshooting and Performance Monitoring
    • Using NPS logs and Event Viewer to troubleshoot authentication failures.
    • Analyzing RADIUS logs and packet captures for debugging.
    • Monitoring AAA and RADIUS request latency for performance optimization.
    • Implementing load balancing and redundancy for high-availability authentication services.

Wi-Fi

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Extreme Networks and Wi-Fi Configuration & Management

  • Extreme Networks Wireless Solutions
    • Deploying and managing ExtremeWireless Access Points (APs).
    • Configuring Wi-Fi SSIDs, VLAN assignments, and security policies.
    • Implementing WPA2-Enterprise and 802.1X authentication with RADIUS.
    • Optimizing Wi-Fi coverage, roaming, and load balancing.
    • Using ExtremeCloud IQ for cloud-based WLAN management.
  • Network Security & Access Control
    • Configuring AAA with RADIUS and TACACS+ for network access security.
    • Enforcing 802.1X authentication and guest access policies.
    • Deploying Extreme Policy (ACLs, QoS, and firewall rules) for traffic control.
  • Extreme Networks Monitoring & Troubleshooting
    • Using Extreme Management Center (XMC) and ExtremeCloud IQ for network visibility.
    • Configuring syslog, SNMP, and NetFlow for network performance monitoring.
    • Troubleshooting network connectivity, VLAN issues, and wireless interference.
    • Conducting Wi-Fi spectrum analysis and RF troubleshooting.
  • Wi-Fi Design & Optimization
    • Conducting site surveys and heatmaps for optimal access point placement.
    • Implementing band steering and load balancing for improved performance.
    • Managing Channel Widths, DFS (Dynamic Frequency Selection), and TX Power Levels.
    • Deploying Mesh Wi-Fi solutions for extended coverage.

Firewalls

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Firewall Configuration & Security Management

  • Firewall Administration & Deployment
    • Configuring and managing Fortinet FortiGate firewalls for network security.
    • Implementing stateful packet inspection (SPI) and deep packet inspection (DPI) for traffic filtering.
    • Setting up and optimizing firewall rules, policies, and NAT configurations.
    • Deploying next-generation firewall (NGFW) features, including IPS, application control, and content filtering.
    • Managing high-availability (HA) configurations for redundancy and failover.
  • VPN Configuration & Secure Remote Access
    • Setting up Site-to-Site VPNs for secure branch office connectivity.
    • Configuring SSL VPN and IPsec VPN for remote user access.
    • Implementing two-factor authentication (2FA) and multi-factor authentication (MFA) for secure VPN access.
    • Optimizing VPN performance and security settings to prevent vulnerabilities.
    • Monitoring and troubleshooting VPN tunnels, authentication issues, and encryption settings.
  • Security Policies & Threat Management
    • Implementing intrusion prevention systems (IPS) and intrusion detection systems (IDS).
    • Configuring web filtering, DNS filtering, and application control for security enforcement.
    • Enforcing zero-trust security policies with user-based and role-based access controls (RBAC).
    • Managing SSL/TLS decryption and deep packet inspection for encrypted traffic analysis.
    • Creating and enforcing geofencing, IP reputation-based blocking, and blacklists/whitelists.
  • Network Access Control & Authentication
    • Integrating firewalls with RADIUS, TACACS+, and Active Directory (AD) for authentication.
    • Setting up identity-based firewall policies to enforce per-user and per-group access.
    • Implementing 802.1X authentication for network access control (NAC).
    • Configuring certificate-based authentication and endpoint security policies.
  • Monitoring, Logging & Incident Response
    • Using FortiAnalyzer and syslog for log analysis and security event monitoring.
    • Implementing automated alerts and security event correlation for threat detection.
    • Conducting regular firewall audits and compliance checks to meet security standards.
    • Performing packet capture and forensic analysis for troubleshooting and threat investigations.
  • Cloud & Hybrid Security Integration
    • Deploying Fortinet firewall solutions in cloud environments (AWS, Azure, GCP).
    • Configuring hybrid cloud security policies for secure traffic between on-premises and cloud networks.
    • Implementing virtual firewalls (FortiGate VM) for cloud workloads.
    • Managing Secure SD-WAN configurations for branch connectivity and cloud access optimization.
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