Utilising open source tools to map and analyse a domain based IT system

I. Introduction II. Method overview III. Domain detail aggregation IV. Procedure V. Visualisation VI. Conclusion © Photo: O van Ginkel

Introduction: Domain mapping  Purpose of paper: Network mapping technique Visualisation Exposure of cyber-security risk to centrally managed Smart Grid IT infrastructure.  Stouffer et al. 2014: Centralised authentication management systems preferred? …to distributed access control solutions  Why? Scalability Large number of users and systems Frequent changes in access privileges I. Introduction II. Method overview III. Domain detail aggregation V. Visualisation VI. Conclusion IV. Procedure

Introduction: Domain mapping  Typical centralised solution Microsoft TM Active Directory and the Lightweight Directory Access Protocol (LDAP) (Howes 1997: RFC 2254) Stores all accounts Manages authentication / authorization All individuals, systems in domain  Numerous concerns: centralised (Stouffer et al. 2014): Authentication servers require high security and availability Local credential caching Network infrastructure needs high reliability - prevent hindrance of authentication attempts. I. Introduction II. Method overview III. Domain detail aggregation V. Visualisation VI. Conclusion IV. Procedure

Introduction: Domain mapping  This study endeavours to i nvestigate a technique: Enabling a person to gain knowledge of a domain network Using a set of simple readily available software tools AdFind Nmapnslookup I. Introduction II. Method overview III. Domain detail aggregation V. Visualisation VI. Conclusion nmap.org support.microsoft.com/kb/ joeware.net IV. Procedure

Method overview: Domain mapping  Utilising the user detail exposed by an Active Directory server Simplify / speed up the process of mapping The domain network  3 Steps: 1. Query 2. Receive 3. Trace / map I. Introduction II. Method overview III. Domain detail aggregation V. Visualisation VI. Conclusion IV. Procedure AdFindNmapftrace tracert

Method overview: Domain mapping I. Introduction II. Method overview III. Domain detail aggregation V. Visualisation VI. Conclusion IV. Procedure

Domain detail aggregation: Domain mapping I. Introduction II. Method overview III. Domain detail aggregation V. Visualisation VI. Conclusion IV. Procedure nslookup -types=any _ldap._tcp.domain.com adfind -h adserver.domain.com -b dc=domain,dc=com -f "objectcategory=computer">domainmachines.txt  4 minutes -> details of machines of network AdFindnslookup GET AD SERVER AD SERVER DOMAIN FILTERRESULT

Domain detail aggregation: Domain mapping I. Introduction II. Method overview III. Domain detail aggregation V. Visualisation VI. Conclusion IV. Procedure  Too slow? 4 minutes… Add “-dn” parameter to adfind query less detail returned but 30 seconds for domain names of machines  Further focus on Servers Limits the approximately domain machines to Smart Grid supporting servers can be identified and possibly be targeted

Domain detail aggregation: Domain mapping I. Introduction II. Method overview III. Domain detail aggregation V. Visualisation VI. Conclusion IV. Procedure Smart Grid Supporting Systems

Procedure: Domain mapping I. Introduction II. Method overview III. Domain detail aggregation IV. Procedure V. Visualisation VI. Conclusion nmap --traceroute -sn -iL hostlist.txt -oN routes.txt  Other tools evaluated: Nmap ftrace tracert

Procedure: Domain mapping I. Introduction II. Method overview III. Domain detail aggregation IV. Procedure V. Visualisation VI. Conclusion Route tracing tool comparative study 1 day: MAPPED devices Only servers: 17 minutes

Procedure: Domain mapping I. Introduction II. Method overview III. Domain detail aggregation IV. Procedure V. Visualisation VI. Conclusion Latency analysis histogram (all hops: devices) Includes intermediary devices

Procedure: Domain mapping I. Introduction II. Method overview III. Domain detail aggregation IV. Procedure V. Visualisation VI. Conclusion Latency analysis histogram (final hops: devices) D C B A Excludes intermediary devices

Procedure: Domain mapping I. Introduction II. Method overview III. Domain detail aggregation IV. Procedure V. Visualisation VI. Conclusion Spatial agreement of typical final hop latency D C B A Spatial location Province Associated average latency (milliseconds) Gauteng2 Free State10 KwaZulu-Natal15 Western Cape24  Pinpoint the location of critical cyber assets within the Smart Grid environment without the necessity of a geo-IP database

Visualisation: Domain mapping I. Introduction II. Method overview III. Domain detail aggregation V. Visualisation VI. Conclusion  Visualisation tools: Data design IV. Procedure RadialNetZenMapvis.js Support JSON For visualisation (Almende 2015)

Visualisation: Domain mapping I. Introduction II. Method overview III. Domain detail aggregation V. Visualisation VI. Conclusion Detail on demand added IV. Procedure

Visualisation: Domain mapping I. Introduction II. Method overview III. Domain detail aggregation V. Visualisation VI. Conclusion Mapped domain network IV. Procedure

Visualisation: Domain mapping I. Introduction II. Method overview III. Domain detail aggregation V. Visualisation VI. Conclusion Mapped domain network (zoom) IV. Procedure

Conclusion: Domain mapping I. Introduction II. Method overview III. Domain detail aggregation V. Visualisation VI. Conclusion  Requests launched at an Active Directory Server  Filtering prior to scanning and mapping of the network  In 20 minutes: knowledge of critical systems, both physical and network location  Ensure that Smart Grid architecture exhibits : Robustness Sufficient redundancy Communication network sustained Do not expose critical cyber assets to damage by accidental or malicious intruders IV. Procedure

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