This repository showcases my journey through Cisco networking courses and labs, where I applied concepts hands-on using real hardware and simulators like Cisco Packet Tracer. My skills span from foundational switch configuration to advanced enterprise network planning, security hardening, and Layer 3 upgrades.
- CIS 26A – Introduction to Networks (RCC)
- CIS 26B – Switching, Routing, and Wireless Essentials (RCC)
- IST 4210 – Advanced Networking and Security (CSUSB)
- Cisco IOS (CLI configuration)
- Cisco Packet Tracer
- PuTTY (terminal emulator)
- Tftpd64 (for IOS upgrades)
- Cisco 3750-48PS switch
- Linksys WRT54GL router
- HP network printer
- Console and Ethernet cables
- IP addressing and subnetting (VLSM)
- VLAN segmentation
- Static routing and route summarization
- DHCP and NAT configuration
- Port security and MAC filtering
- Access control lists (ACLs)
- Point-to-point connections
- Network troubleshooting (
ping
,traceroute
, etc.)
- Hostname and banner setup
- Password encryption and login security
- VTY access and SSH configuration
- Disabled unnecessary services (e.g., DNS lookup)
- Logging synchronization
- Inter-VLAN routing via Layer 3 upgrades
- Assigned hostnames and IP addresses
- Configured password-protected access (console, VTY, and privileged exec)
- Enabled SSH and secured remote access
- Applied banners and password encryption
- Created and applied standard and extended ACLs
- Set up management VLANs
- Restricted services by IP and protocol using ACLs
We designed a full-scale enterprise networking project in groups, simulating a multi-floor building with segmented VLANs, routed traffic, bridged wireless access points, ACLs for security, and Layer 3 functionality.
- VLANs per floor and department
- Trunking between switches and routers
- ACLs for role-based access (e.g., only HR can print, only admins can SSH)
- DHCP per subnet
- Wireless AP bridging using Linksys WRT54GLs
- Layer 2 to Layer 3 IOS upgrade on a switch to enable inter-VLAN routing
- Connected an HP network printer to the switch and printed a test page to confirm connectivity
Hands-on Packet Tracer labs helped solidify my understanding of both basic and advanced concepts:
- Designed a network topology that mirrors the classroom’s physical setup
- Created complete network addressing tables
- Assigned IPs and subnet masks using VLSM
- Configured VLANs and trunk ports
- Applied port security and tested violations
- Configured DHCP and NAT
- Built and tested ACLs for service restrictions
- Practiced troubleshooting using
ping
,traceroute
, andshow
commands - Simulated and verified inter-VLAN routing
This repository includes some files showing proof of what I was able to do with my group for this project:
swfloor6-config
– The switch configuration for Floor 6, containing VLAN definitions, trunk configurations, ACLs, SSH settings, and more.tftp download
– A screenshot showing the download of the running-config file from the switch to a TFTP server I was hosting on my laptop.BuildingDiagramVLANS
– A visual of the full building diagram used for the group project. Each group was assigned a floor; we were responsible for Floor 6.Addressing Table
– Our floor’s addressing table, including assigned subnets, device IPs, and DHCP exclusions.