SYSTEM DIRECTORY: /ROOT/VALENTINO | PROTOCOL: TKJ-v4.2

// TELECOMMUNICATION & NETWORK INFRASTRUCTURE ENGINEER

VALENTINO
DE CAPRIO

$ whoami >>

Born in Bogor (12 February 2009), specialized in Computer & Network Engineering (TKJ) at SMK Bangun Nusa Bangsa. Passionate about architecting enterprise network topologies, configuring high-availability routing protocols (MikroTik & Cisco), deploying hardened Linux servers, and fortifying cyber defenses.

ORIGIN

Bogor, West Java

CAMPUS

SMK BNB (TKJ)

CORE STACK

MikroTik / Linux

AVAILABILITY

Open for Collab

EXPLORE PROJECTS CONNECT LINK TEST PACKET SIMULATOR

GATEWAY://10.0.0.1 (CORE-HUB)

HUD-V4.9

MIKROTIK CORE BGP / OSPF ACTIVE

VLAN 10: SERVERS

VLAN 20: CLIENTS

FIREWALL L7

PACKETS / SEC

14,892

THROUGHPUT

984 Mbps

STATUS

0% LOSS

> [KERNEL] Interface ether1 link UP 1000Mbps Full Duplex

> [OSPF] Neighbor 10.255.0.2 established FULL adjacency

> [SECURITY] iptables SYN_FLOOD defense active [DROP=0]

// 01. IDENTITY & BIO

BIO-ID: VDC-09 CAM-01 [LIVE]

VALENTINO DE CAPRIO

TKJ SPECIALIST // SYSADMIN

SMK BNB

Full Name Valentino De Caprio

Date of Birth 12 February 2009

Place of Birth Bogor, West Java, ID

Major / Vocation Teknik Komputer & Jaringan

Institution SMK Bangun Nusa Bangsa

ENGINEERING PROFILE & VISION

ACTIVE

Hello! I am Valentino De Caprio, a passionate and dedicated Computer and Network Engineering (TKJ) student at SMK Bangun Nusa Bangsa, born and raised in Bogor.

From foundational physical infrastructure like fiber optic splicing and Cat6 structured cabling to complex logical architectures including MikroTik RouterOS multi-VLAN segmentation, dynamic OSPF/BGP routing, and Debian Linux server services (DNS, Web, Mail, DHCP), I focus on engineering resilient, low-latency, and hardened network ecosystems.

I actively combine hands-on network operations with cybersecurity fundamentals—performing packet traffic analysis with Wireshark, configuring stateful firewall rulesets, and preventing unauthorized network penetration.

ROUTING & SWITCHING

VLANs, OSPF, BGP, Trunking & Link Aggregation

SYSADMIN

Debian/Ubuntu Server, BIND9, Nginx, Samba

CYBER DEFENSE

Firewall NAT/Mangle, Wireshark, Port Security

// 02. TECHNICAL MATRIX

CORE COMPETENCIES

System capabilities, protocols mastery, and hands-on laboratory proficiencies.

Network Infrastructure

ROUTING // SWITCHING // TOPOLOGY

PROFICIENT

Proficient in configuring MikroTik RouterOS (MTCNA level), Cisco CCNA concepts, VLAN 802.1Q segmentation, and dynamic routing architectures.

MikroTik RouterOS (Routing, Queue, NAT) 92%

Cisco CCNA Concepts & Packet Tracer 85%

VLAN 802.1Q Segmentation & Inter-VLAN Routing 90%

Dynamic Routing (OSPF / Static Routes / BGP intro) 82%

MikroTik RouterOS Cisco IOS VLAN Trunking Subnetting VLSM/CIDR DHCP Relay

Server & Systems

LINUX // WINDOWS SERVER // SERVICES

SPECIALIZED

Deployment, management, and hardening of enterprise server environments on Debian/Ubuntu Linux and Windows Server platforms.

Linux Server (Debian / Ubuntu Server CLI) 88%

DNS (BIND9) & Web Server (Nginx / Apache) 86%

DHCP Server, SAMBA, FTP & SSH Hardening 90%

Windows Server (Active Directory / Group Policy basics) 78%

Debian 12 CLI BIND9 Master/Slave Postfix & Dovecot Virtualization (Proxmox/VirtualBox)

Security & Monitoring

FIREWALL // WIRESHARK // THREAT MITIGATION

DEFENSIVE

Network traffic inspection, port scanning analysis, intrusion detection fundamentals, and firewall ruleset creation.

Wireshark Packet Analysis (TCP/UDP, Handshakes) 85%

Firewall Ruleset (NAT, Mangle, RAW Filter) 88%

DoS / Port Scan Defense & Brute Force Prevention 80%

Network Monitoring (The Dude, PRTG / SNMP) 76%

Wireshark Filters iptables Address-List Rules Nmap Recon

Hardware & Physical

FIBER OPTIC // CABLING // RACK MANAGEMENT

HANDS-ON

Practical telecommunication wiring, fiber optic fusion splicing, OTDR testing, and structured server rack patch cabling.

Fiber Optic Fusion Splicing & Cleaving 94%

Cat5e / Cat6 UTP Crimping (T568A / T568B) & Fluke Test 98%

OTDR (Optical Time-Domain Reflectometer) & OLS/OPM 84%

Server Rack Mounting, Patch Panel & Cable Tray Organization 90%

Fusion Splicer Fujikura/Ilsintech Optical Power Meter Patch Panel Punch Down 42U Rack Cabling

// 03. TOPOLOGY & LAB DEPLOYMENTS

PROJECTS & TOPOLOGIES

Realized laboratory topologies, server cluster configurations, and network deployments.

VERIFIED ON HARDWARE & SIMULATORS

top_mikrotik_vlan.net

ROUTING-V4

ISP GATEWAY OSPF AREA 0

CORE-R1

10.10.0.1/30

DIST-SW1

Trunk 802.1Q

VLAN 10: MGMT

VLAN 20: STAFF

VLAN 30: LAB

Enterprise Multi-VLAN & OSPF Routing Architecture

Design and deployment of a fault-tolerant multi-branch network featuring MikroTik RouterOS, 802.1Q VLAN trunking, dynamic OSPF routing, bandwidth queues (PCQ), and DHCP failover.

MikroTik RouterOS 802.1Q VLAN OSPF Dynamic Simple Queue/PCQ

debian_srv_cluster.sh

SYSADMIN-L2

DEBIAN 12 KERNEL TLS 1.3 / SSL

BIND9 DNS

ns1.valen.net

NGINX + PHP-FPM

Reverse Proxy

Postfix & Dovecot Mail UFW Hardened (Port 22/80/443/53)

Hardened Linux Web, Mail & DNS Infrastructure

Full-stack Linux server deployment on Debian 12 containing master/slave authoritative DNS (BIND9), Nginx web proxy with Let's Encrypt SSL, Postfix/Dovecot secure mail transfer, and SSH key enforcement.

Debian 12 CLI BIND9 DNS Nginx Web Postfix/Dovecot

firewall_raw_filter.rsc

DEFENSE-SEC

PACKET FILTER ENGINE L7 PROTOCOL

> SYN_FLOOD_DETECT [DROPPED]

> SSH_BRUTE_FORCE_BAN [STAGE-3 BLACKLIST]

> L7_TOR_BLOCKING [MATCHED & LOGGED]

Wireshark PCAP Analyzed 0 False Positives

Stateful Firewall Ruleset & Threat Mitigation

Custom RAW table and filter ruleset engineered to mitigate SYN floods, port scanners (PSD), recursive DNS amplification attacks, and unauthorized protocol tunneling via Layer 7 patterns.

RAW Table Filter PSD Port Scan Trap Address-List Jails Wireshark Audit

// 04. INTERACTIVE PACKET DISPATCHER & FIREWALL LAB

NETWORK PACKET LAB SIMULATOR

Interactive test bench: dispatch live TCP/HTTP packets, simulate DoS attacks, or trigger OSPF failover.

FIREWALL STATE: FILTERING RAW

FORWARDED: 124

DROPPED (DoS): 0

ACTIVE ROUTE: PRIMARY GIGABIT LINK (ETH1)

1. CLIENT HOST (192.168.10.50)

VLAN 20 Staff Network // SYN Request

2. MIKROTIK CORE (RB4011)

RAW Connection Tracking // Rate Limiter

3. DEBIAN CLOUD SERVER

NGINX TLS 1.3 // 200 OK ACK Response

// 05. VDC HUD CONSOLE (INTERACTIVE SHELL)

guest@vdc-mainframe:~# (Interactive TKJ Shell v2.6)

TYPE help FOR COMMANDS

========================================================================
* VALENTINO DE CAPRIO - HIGH-TECH CYBER HUD MAINFRAME OS [2026]
* TKJ SPECIALIST // SMK BANGUN NUSA BANGSA // BOGOR, INDONESIA
========================================================================

System initialization completed. All routing tables synced. Type help to view available system commands.

Available quick commands: whoami, skills, topology, ping 8.8.8.8, matrix, theme, hack, neofetch, contact, clear

vdc@terminal:~$

// 06. SECURE UPLINK TRANSMISSION