Network Perimeter Security Scan
Every open port is a potential door for attackers. Our AI-powered network scan maps your entire internet-facing attack surface — open ports, exposed services, SSL weaknesses, and firewall gaps — before attackers do.
Why Network Perimeter Scanning Matters
Ports Scanned
We scan all 65,535 TCP ports plus the top 1,000 UDP ports on every target — not just the common 100 that basic scanners check
Expose Unnecessary Services
37% of Australian businesses expose at least one unnecessary service to the internet — databases, admin panels, or legacy systems they forgot about
Exploitation Window
Automated botnets scan the entire internet in under 6 hours, exploiting newly exposed services within minutes of discovery
Complete Perimeter Audit
Full external network penetration test covering all IP ranges, with detailed reporting and remediation guidance — significantly less than a single incident response
What Our Network Security Scan Covers
Comprehensive Port Scanning
We perform full TCP port scanning across all 65,535 ports on your external IP addresses — not the truncated scan most tools default to. Our scanning engine uses SYN, connect, and version detection techniques to identify every service listening on your perimeter. We also scan the top 1,000 UDP ports for services like DNS, SNMP, VPN endpoints, and NTP that attackers commonly target. Each discovered service is fingerprinted to identify exact software versions and potential CVE matches.
Firewall Rule Analysis
We test your firewall configuration from the outside — identifying rules that are overly permissive, services that should be blocked but are reachable, and inconsistencies between your intended security policy and actual enforcement. This includes testing for common misconfigurations like allowing inbound traffic on management ports (SSH, RDP, Telnet), permitting source-routed packets, and failing to block known-bad IP ranges. We also check for firewall bypass techniques like protocol tunnelling.
SSL/TLS Security Assessment
Every encrypted service on your perimeter is tested for TLS version support (checking for deprecated TLS 1.0/1.1), cipher suite strength, certificate validity and chain integrity, HSTS implementation, and known protocol vulnerabilities (BEAST, POODLE, Heartbleed, ROBOT, DROWN). We also check for certificate expiry dates, wildcard certificate exposure, and whether certificate transparency logs reveal hidden subdomains that attackers could target.
Service Enumeration & Vulnerability Mapping
For every discovered service, we identify the exact software name and version, then cross-reference against the National Vulnerability Database (NVD) and Exploit-DB to identify known CVEs with available exploits. This goes beyond simple version matching — we test for default credentials, information disclosure through service banners, and configuration weaknesses specific to each service type. Common findings include outdated web servers, exposed database ports, and VPN endpoints with known authentication bypasses.
DNS Security Assessment
Your DNS configuration controls how the world finds your services. We check for DNS zone transfer vulnerabilities (which can expose your entire internal network topology), DNSSEC implementation status, dangling DNS records pointing to decommissioned services (subdomain takeover risk), and DNS cache poisoning susceptibility. We also enumerate subdomains through certificate transparency logs, search engine results, and brute-force discovery to map your full external footprint.
Remote Access & VPN Assessment
Remote access services — VPNs, RDP gateways, SSH jump hosts, and web-based remote desktop — are high-value targets. We test these for authentication strength, known CVEs (especially critical VPN vulnerabilities like CVE-2023-4966 in Citrix and CVE-2024-3400 in Palo Alto), multi-factor authentication enforcement, and brute force resistance. For organisations using split-tunnel VPNs, we assess whether the configuration could allow lateral movement from compromised remote devices into the corporate network.
See How AI Can Transform Your Operations
Get a personalized demo and ROI assessment for your business in a free 20-minute consultation.
Network Scan Methodology
Scope Definition & Reconnaissance
- Define IP ranges, domains, and cloud assets in scope
- Identify all public-facing IP addresses through WHOIS, ASN, and DNS lookups
- Enumerate subdomains and discover shadow IT assets
- Map cloud infrastructure (AWS, Azure, GCP) external endpoints
- Establish scanning windows and communication protocols
- Configure scanning engines with environment-specific parameters
Active Scanning & Testing
- Execute full TCP port scan across all 65,535 ports per target
- Scan top 1,000 UDP ports for common services
- Fingerprint all discovered services for version identification
- Test SSL/TLS on all encrypted services
- Assess firewall rules and attempt bypass techniques
- Test remote access services for authentication weaknesses and known CVEs
Analysis & Reporting
- Cross-reference all findings against NVD and Exploit-DB
- Validate findings to eliminate false positives
- Compile network topology diagram showing exposed services
- Produce detailed technical report with CVSS scoring
- Deliver executive summary with prioritised remediation actions
- Conduct findings walkthrough and answer technical questions
Network Security Scan FAQs
Map Your Attack Surface Before Attackers Do
A $400 network perimeter scan covers all 65,535 TCP ports, SSL/TLS assessment, and firewall testing — with a detailed report delivered within a week.