Authentic CompTIA Certification Exam CAS-004 Questions Answers

To reduce the risk of unauthorized devices accessing company resources, requiring device certificates is an effective control. Device certificates can be used to authenticate devices before they are allowed to connect to the network and access resources, ensuring that only devices with a valid certificate, which are typically managed and issued by the organization, can connect.

Restricting HTTP methods can mitigate the risk of network-based attacks against an online store by limiting the types of HTTP requests that the server will accept, thus reducing the attack surface. This is a common method to prevent web-based attacks such as Cross-Site Scripting (XSS) and SQL Injection.

Comprehensive and Detailed in-Depth Explanation:

Why the Correct Answer is C (Geocoded firewall rules):

Geocoded firewall rulesare security configurations thatfilter traffic based on geographic location(commonly by IP address).

These rules can be configured to:

Allow or denyinbound and outbound trafficbased on the country of origin.

Restrictthird-party vendor connectionsfromhigh-risk or banned countries.

For example:

Blocking allincoming connections from countries with high cyber threat levels.

Allowing only vendors frompre-approved regions.

Geocoded rules are especially useful inregulatory compliance scenarioswheredata sovereigntyis a concern.

Why the Other Options Are Incorrect:

A. Microsegmentation:

Microsegmentation involvesisolating network segmentsto enhance internal security.

Itdoes not addressthe geographic origin of traffic.

Primarily used forreducing lateral movementwithin a network rather than filtering external sources.

B. Supply chain visibility:

This involvesmonitoring and understandingthe components and processes involved in thesupply chain.

It does notactively block or restrict trafficfrom specific geographic locations.

D. Source code reviews:

These are conducted toidentify vulnerabilities in application code.

They do notrestrict inbound trafficbased on geographic criteria.

Real-World Scenario:

A financial services company needs toblock access from countries under sanctionsor known forcybercrime activities.

Thefirewall is configuredto drop all inbound traffic from IP ranges associated withhigh-risk countries, maintaining compliance with regulations likeOFAC.

Example of Geocoded Firewall Configuration:

Example Rule in an IPTables Configuration:

bash

CopyEdit

iptables -A INPUT -m geoip --src-cc CN,RU,IR -j DROP

This ruleblocks trafficfromChina (CN),Russia (RU), andIran (IR).

Benefits of Geocoded Firewall Rules:

Risk Reduction:Minimizes exposure tothreat actors from known high-risk regions.

Compliance:Helps organizations comply withregulatory requirementsthat restrict data from certain countries.

Operational Efficiency:Automatically blocks traffic without requiring manual intervention.

Extract from CompTIA SecurityX CAS-005 Study Guide:

TheCompTIA SecurityX CAS-005 Official Study Guideemphasizes the importance ofgeolocation-based access controlin environments wherethird-party access is common. Geocoded firewall rules enable organizations toeffectively control and reduce the attack surfaceby blocking traffic fromhigh-risk regions.