Network Infrastructure Security Assessment Results
Demo Session: demo-network-876...Analysis Summary
This network infrastructure assessment reveals significant security vulnerabilities across multiple layers. The combination of outdated firmware, weak cryptographic implementations, and insufficient network segmentation creates substantial attack surfaces. Five critical vulnerabilities could allow complete network compromise, including remote code execution on core routing infrastructure and unauthorized access through weak wireless security. The flat network topology amplifies the impact of any single point of compromise.
Critical Issues (5)
Core Router (Cisco ASR 9000)
Running outdated IOS XR 6.6.3 with 23 known CVEs including remote code execution vulnerabilities
Recommendation: Immediate upgrade to IOS XR 7.8.1 or later. Apply emergency patches for CVE-2023-20034 and CVE-2023-20073 which allow unauthenticated remote access.
Firewall Cluster (Palo Alto PA-5220)
SSL/TLS termination using RSA-1024 certificates and weak cipher suites
Recommendation: Replace with RSA-4096 minimum or ECDSA P-384 certificates. Disable TLS 1.0/1.1 and weak ciphers (RC4, 3DES). Enable Perfect Forward Secrecy.
SNMP Configuration
SNMPv2c enabled with default community strings across 47 network devices
Recommendation: Disable SNMPv1/v2c immediately. Migrate to SNMPv3 with strong authentication and encryption. Change all default community strings.
Wireless Access Points (Aruba IAP-305)
WPA2-PSK with weak 8-character password and WPS enabled
Recommendation: Upgrade to WPA3-Enterprise with 802.1X authentication. Disable WPS. Implement certificate-based device authentication.
Network Segmentation
Flat network topology with guest and corporate traffic sharing same VLAN
Recommendation: Implement zero-trust network segmentation. Separate guest, corporate, IoT, and management traffic into isolated VLANs with strict inter-VLAN routing policies.
Moderate Issues (5)
Switch Stack (Cisco Catalyst 9300)
Default VLAN 1 used for management traffic with unencrypted protocols
Recommendation: Move management to dedicated secure VLAN. Enable SSH instead of Telnet. Implement TACACS+ for centralized authentication.
Load Balancer (F5 BIG-IP LTM)
Health checks performed over unencrypted HTTP with weak SSL profiles
Recommendation: Configure HTTPS health checks with certificate validation. Update SSL profiles to use TLS 1.3 and strong cipher suites.
Network Monitoring
SNMP monitoring lacks encrypted transport and centralized log analysis
Recommendation: Deploy secure network monitoring with encrypted protocols. Implement SIEM integration for security event correlation.
DNS Configuration
Internal DNS servers allow recursive queries from external sources
Recommendation: Restrict DNS recursion to internal networks only. Enable DNS over HTTPS (DoH) or DNS over TLS (DoT) for external queries.
Network Time Protocol
NTP servers using unauthenticated time synchronization
Recommendation: Configure authenticated NTP with trusted time sources. Enable NTP authentication keys for all network devices.
Compliant Items (3)
Border Gateway Protocol
BGP sessions properly configured with MD5 authentication and prefix filtering
Note: External BGP peering follows security best practices with appropriate route filters and authentication.
Network Documentation
Complete network topology and IP address management documentation maintained
Note: Network architecture is well-documented with current diagrams and IP allocation records.
Backup Network Links
Redundant internet connections with automatic failover configured
Note: Network resilience is properly implemented with diverse carrier connections and failover mechanisms.
Strategic Recommendations
- Execute emergency patching for all network infrastructure within 72 hours
- Implement immediate network segmentation with zero-trust architecture principles
- Deploy comprehensive network access control (NAC) solution for device authentication
- Establish 24/7 network security monitoring with automated threat detection
- Migrate all network management to encrypted protocols (SSH, HTTPS, SNMPv3)
- Implement certificate-based authentication for all wireless and VPN access
- Deploy next-generation firewalls with deep packet inspection and threat intelligence
- Establish network security incident response procedures with defined escalation paths
- Schedule quarterly network security assessments and penetration testing
- Create network security baseline configurations for all device types
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