DNS Spoofing & Cache Poisoning Prevention

Question 1

Juniper Firewalls can support DNS Security Extensions (DNSSEC), a suite of extensions to DNS that adds an additional layer of security. DNSSEC helps prevent DNS spoofing and cache poisoning by digitally signing DNS records, ensuring their authenticity.

Answer 1

DNS Security (DNSSEC)

Question 2

Juniper Firewalls can inspect DNS traffic for anomalies and malicious domain resolutions. They maintain lists of known malicious domains and can block or alert on DNS requests to such domains.

Answer 2

DNS Filtering and Inspection

Question 3

IDS/IPS capabilities in Juniper Firewalls can detect and alert on suspicious DNS traffic patterns associated with cache poisoning attempts. They can identify and block or alert on DNS record manipulation.

Answer 3

Intrusion Detection/Prevention System (IDS/IPS)

Question 4

Juniper Firewalls can use content filtering to restrict access to suspicious or potentially malicious domains. They can block users from accessing websites with a history of DNS spoofing or cache poisoning activities.

Answer 4

Content Filtering

Question 5

Some Juniper Firewalls use behavior-based analysis to detect abnormal DNS traffic behavior. If DNS requests and responses exhibit characteristics of cache poisoning, the firewall can take action to block or alert.

Answer 5

Behavior-Based Analysis