You're insightful to point out that the compromise of a single server within a DMZ places all of the other devices...
By submitting your personal information, you agree that TechTarget and its partners may contact you regarding relevant content, products and special offers.
in that DMZ at risk. However, it's important to point out that the compromise of one system does not necessarily mean that other servers will "automatically" become compromised. When an attacker gains access to a single server, that system does provide a possible foothold in your network. Relying upon the trust relationships between your DMZ's servers, the hacker can then leverage that foothold to gain access to other systems.
How can the enterprise be protected from this risk? By using security controls other than the network firewall that segments the DMZ. For example, deploy host firewall software on each server within the DMZ, restricting inbound traffic to that which is necessary to meet business requirements. These rules should even apply to outside servers that have been collocated in the DMZ. Similarly, implement all of the other system hardening best practices: ensure that systems are patched properly, practice good account management and deploy antivirus and intrusion detection software on the network.
Dig Deeper on DMZ Setup and Configuration
Related Q&A from Mike Chapple
A proposed cyberattack information database in the U.K. aims to improve cyberinsurance. Expert Mike Chapple explains what collecting data breach ...continue reading
The proposed CFTC regulations on cybersecurity testing are set to finalize in 2016. Expert Mike Chapple discusses the effects these regulations have ...continue reading
Whether Apple is a HIPAA covered entity was called into question when it advertised for a health regulations lawyer. Expert Mike Chapple discusses ...continue reading
Have a question for an expert?
Please add a title for your question
Get answers from a TechTarget expert on whatever's puzzling you.