IT Examiner School, Seaside, CA

VPN (example)

Technology State Bank Network Topology

Connection to ATMSwitch

Connection to Federal Reserve

Remote dial-up connections

Laptop

RAS Server

3rd Party Network Support

Laptop

Modem

ATM

Modem

IDS

FedLine

Laptop

Modem

Proof / Capture Imaging Server

Main Office LAN

Audit

VPN

LAN Server

IDS

Adm.

Internet

Phone Banking

Mainframe

IDS

Hub

VPN

UPS

Tape

VPN

VPN

Router

Router

Branch Office LAN

IDS

IDS

Leased Phone Line

Firewall

Switch

Firewall

Hub

LAN Server

Web Server

E-Mail Server

E-banking Server

Hub

Hub

Loan Application Server

Modem

Laser printer

Laser printer

Modem

Branch Workstations

Deposit Department Workstations

Loan Department Workstations

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VPN • Provides security by use of “tunnel protocols” via encryption • Confidentiality if an attacker “sniffs” network traffic at packet level • Authentication to prevent unauthorized users from accessing the VPN

• Message integrity to detect any instances of tampering