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Network vulnerability
The following list explains the main considerations regarding network vulnerability:
- Vulnerable legacy protocols with insufficient security capabilities
- Weak network security architecture
- Network device configurations not stored or backed up
- Unencrypted passwords, lack of password expiration policies
- Inadequate access controls applied
- Inadequate physical protection of network equipment
- Unsecured physical ports
- Non-critical personnel have access to equipment and network connections
- Lack of redundancy for critical networks
- No security perimeter defined, firewalls not used adequately, and control networks used for non-control traffic
- Lack of integrity checking for communications
- Inadequate data protection between clients and access points:
Figure 1.11: The flow sequence of threat and risk assessment; Source: Practical IoT Security Book, Packt Publishing