article thumbnail

What Is DNS Security? Everything You Need to Know

eSecurity Planet

DNS security protects the domain name system (DNS) from attackers seeking to reroute traffic to malicious sites. Since a majority of business IT traffic now accesses or passes through the internet, DNS plays an increasingly important — and vulnerable — role.

DNS 94
article thumbnail

Building a scalable RAVPN architecture in Oracle Cloud Infrastructure using Cisco Secure Firewall

Cisco Security

Cisco Duo – Multi-factor authentication from Duo protects the network by using a second source of validation and authentication. It enforces security at the DNS layer to block malware, phishing, and command and control callbacks over any port. OCI DNS service provides a mechanism for RAVPN load balancing.

Firewall 106
Insiders

Sign Up for our Newsletter

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

article thumbnail

What is DKIM Email Security Technology? DKIM Explained

eSecurity Planet

The DomainKeys Identified Mail (DKIM) email authentication standard enables email servers to check incoming emails to verify the sender and detect email message alterations. By implementing DKIM, an organization improves the reputation of its own emails and enables receiving email servers to improve their own email security.

article thumbnail

Most Organizations Do DMARC Wrong. Here’s How to Do It Right.

eSecurity Planet

When organizations implement Domain-based Message Authentication, Reporting and Conformance ( DMARC ), they expect to tighten email security and protect against spoofing and other spam email attacks. DMARC provides widely established standards for email authentication and is adopted by all U.S. What is DKIM? What is SPF?

DNS 110
article thumbnail

How to Prevent DNS Attacks: DNS Security Best Practices

eSecurity Planet

Domain name service (DNS) attacks threaten every internet connection because they can deny, intercept, and hijack connections. With the internet playing an increasing role in business, securing DNS plays a critical role in both operations and security. Everything You Need to Know.

DNS 103
article thumbnail

A compelling story

Cisco Security

For example: IMPACT : An SSH server which supports password authentication is susceptible to brute-forcing attacks. REPRODUCTION : Use the `ssh` command in verbose mode (`ssh -v`) to determine supported authentication methods. REMEDIATION : Disable unneeded authentication methods. The second story comes from machine detections.

DNS 115
article thumbnail

How to Secure DNS

eSecurity Planet

The domain name system (DNS) is basically a directory of addresses for the internet. Your browser uses DNS to find the IP for a specific service. For example, when you enter esecurityplanet.com, the browser queries a DNS service to reach the matching servers, but it’s also used when you send an email. DNS spoofing or poisoning.

DNS 130