Category: DNS

  • Strengthening Enterprise Security with Shield 53 DNS Virtual Appliance

    Strengthening Enterprise Security with Shield 53 DNS Virtual Appliance

    In today’s digital age, the security of an enterprise’s network and data is paramount. Cyber threats continue to evolve, making it essential for organizations to implement robust security measures. One such critical component is DNS (Domain Name System) protection, and Shield 53 Virtual Appliances are leading the way in providing cutting-edge solutions to safeguard your enterprise.

    DNS Protection: A Vital Element of Enterprise Security

    DNS serves as the internet’s address book, translating user-friendly domain names into IP addresses that computers use to identify each other. Unfortunately, cybercriminals often exploit DNS to launch attacks, such as phishing, malware distribution, and data exfiltration. This is where DNS filtering becomes crucial.

    Real-time Protection

    Shield 53 Virtual Appliances offer real-time DNS protection for your enterprise. By constantly monitoring and analyzing DNS requests, they can block unwanted and malicious domain requests instantaneously. This proactive approach to security helps prevent cyber threats from even reaching your network, significantly reducing the risk of security breaches.

    Enforcing a Minimum Security Baseline

    DNS filtering allows organizations to establish and enforce a minimum security baseline. It ensures that all DNS requests conform to predetermined security policies, blocking access to potentially harmful or unapproved websites. This not only enhances security but also helps in regulatory compliance and maintaining a safe and productive work environment.

    Seamless Integration

    One of the key advantages of Shield 53 DNS Virtual Appliances is their seamless integration with local DNS servers. This integration simplifies the migration and setup process, ensuring a smooth transition without disruptions to your network operations. Whether you are a large enterprise or a smaller organization, Shield 53 can be tailored to fit your specific needs.

    Benefits of Shield 53 DNS Virtual Appliances:

    1. Enhanced Security: Shield 53 offers a robust defense against DNS-based threats, significantly reducing the risk of data breaches and other cyberattacks.
    2. Improved Compliance: By enforcing security policies and blocking access to inappropriate websites, Shield 53 helps organizations meet compliance requirements.
    3. Ease of Integration: The seamless integration with local DNS servers means minimal downtime and reduced complexities during setup.
    4. Real-time Protection: Shield 53 acts swiftly to block malicious domain requests in real-time, ensuring threats are neutralized before they can cause harm.
    5. Customization: Tailor Shield 53 to match your organization’s specific needs, whether you require a comprehensive solution for a large enterprise or a more streamlined setup for a smaller business.

    In conclusion, Shield 53 DNS Virtual Appliances provide a crucial layer of security for your enterprise. By proactively blocking unwanted and malicious domain requests, enforcing security policies, and seamlessly integrating with your existing DNS infrastructure, Shield 53 helps reduce corporate risk and strengthen your organization’s overall cybersecurity posture. Don’t wait until the next cyber threat emerges; invest in Shield 53 today to fortify your enterprise’s defenses and protect your data from evolving online dangers.

    Visit www.shield53.com to find out more.

  • What is Secure DNS

    What is Secure DNS

    Within the industry there’s been a lot of talk lately around DNS over HTTPS (DoH) and how adversaries use the channel to perform C2 DNS lookups and exfiltrate data via tunneling without detection by security apparatus.

    Encrypted DNS Protocols

    • DNS over HTTPS (DoH)
    • DNS over TLS (DoT)
    • DNSCrypt

    DoH and DoT operate over TCP ports 443 and 853 respectively by default, and DNSCrypt services commonly run over both TCP and UDP port 443. The three protocols are different but achieve the same goal — DNS queries are passed over a secure channel to a server that in-turn provides a response.

    Controlling DNS

    Many enterprise networks are blind and don’t control and prevent unknown outbound DNS Queries. Ultimately, to solve the visibility and enforcement problem it’s important to establish choke points and block unauthorized channels, such as DoH, DoT, DNSCrypt, Tor, I2P, and Freenet.

    Shield53 offers many strategies to enforce DNS Filtering controls to prevent malicious and unwanted websites. Ask your CISO today if egress DNS traffic is passing through a central control layer where it is inspected and can be blocked in real time.

    DNS over HTTPSDNS Filtering

  • What is DNS

    What is DNS

    Introduction to DNS

    Gettting started most people need to understand DNS and how your using this in your daily life. Lets start by establishing knowlege about DNS and DNS security.

    The domain name system (DNS) works like a postal code or phone book for the internet. When you type “shield53.com” into your browser, the DNS server translates the text into numbers called internet protocol (IP) address. Using the Following Example bellow you can see “shield53.com” being translated into IP Address “198.185.159.144”

    When you open a web browser and go to a website, you don’t have to remember and enter a long number. Instead, you can enter a domain name like “example.com” and still end up in the right place.

    DNS filtering can be used as security layer to mitigate threats and reduce risks in real time. DNS filtering is very simple technique of preventing unwanted web pages or IP addresses that seem suspicious. Once you have a DNS filter enabled, you can browse the Internet knowing that the filter will prevent you from visiting malicious websites by showing you a “block page” in your web browser

    DNS Filtering DNS over HTTPS