Tugas Akhir 12220017_Marsel

Tugas Akhir 12220017_Marsel

• By Marsel*; Astriana Mulyani;
• Tugas Akhir
• 1
• 183-193

PT. Andalan Niaga Expressindo (ANX), an
international freight-forwarding company, currently
runs a computer network without VLAN
segmentation or an Access Control List (ACL), so all
divisions share one broadcast domain with
unrestricted inter-division access, raising the risk of
unauthorized access to company data. This study
designs a division-based VLAN scheme for four
divisions (HRGA & Accounting, Document, Sales, and
Customer Service), combined with Router-on-a-Stick
inter-VLAN routing, a DHCP server, an ACL
restricting inter-VLAN access, and a firewall filtering
internal-external
traffic.
All
configuration,
implementation, and testing were carried out entirely
within the Cisco Packet Tracer simulation
environment, not on the company's production
network. Twenty-four test scenarios were executed,
covering VLAN activation status, inter-VLAN
connectivity,
DHCP address allocation, ACL
permit/deny behavior in both directions, and firewall
rule matching for internal-to-external, external-to
internal, and service-specific traffic. Results show the
four VLANs were successfully activated, inter-VLAN
routing worked as configured, the DHCP server
correctly allocated addresses per division, the ACL
correctly permitted and denied traffic according to
the configured direction and rule, and the firewall
correctly matched traffic against its configured rules.
Within this simulation, the design demonstrated
improved access control between divisions and is
expected to improve network security and
administrative efficiency if applied to the actual
network, pending validation on physical devices. This
research contributes an integrated, simulation-tested
design combining VLAN, inter-VLAN routing, a DHCP
server, an ACL, and a firewall for a freight-forwarding
company network, an integration not jointly
examined in the reviewed prior studies.

• Katakunci VLAN, Access Control List, Firewall, keamanan jaringan, Cisco Packet Tracer
• URL https://ejournal.nusamandiri.ac.id/index.php/pilar/article/view/9023
• Penerbit Jurnal Pilar Nusa Mandiri, Jakarta DKI Jakarta

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