Cyber Security Degrees

What is DNS and how does it work?

DNS Monitoring If you have the name of a person but not their phone number, you can search it in a telephone book. The Domain Name System (DNS) acts as a phone book for the internet. It is where internet domain names are located, translated into Internet Protocol (IP), addresses. DNS maps the name that people use to find a website to an IP address that computers use to find that website.

DNS is essential to web browsing and other internet activities. It provides the information necessary to connect users to remote hosts. The DNS mapping is done in a hierarchy. Access providers, enterprises, universities, and governments all have their ranges of IP addresses. They also have their domain names. These DNS servers are used to manage the mapping of these names to addresses.

DNS: How it Works

DNS converts hostnames (e.g. www.example.com), into computer-friendly IP addresses (e.g. 192.168.1.1). Each device connected to the internet is assigned an IP address. This allows it to be identified. A translation must be done between the user’s input and the machine-friendly URL to load a webpage.

Types of DNS Services

AuthoritativeDNS: This authoritative DNS service allows developers to update their public DNS names. It responds to DNS queries and converts domain names into IP addresses, so computers can communicate. The authoritative DNS is the ultimate authority on a domain. It provides the IP address information and answers to queries from recursive DNS servers.

Recursive DNS Clients don’t usually make queries directly to authoritative DNS services. They connect to a recursive DNS or resolver service instead. A recursive DNS will have the DNS reference stored and cached for a specified time. If it does not, it will answer the DNS query by providing either the source or IP information. If it does not have the DNS reference cached or stored for a specific period, it will answer the DNS query by providing the source IP information.

What is the relationship between CDN and DNS?

A Content Delivery Network (CDN has additional benefits, including security features that reduce attacks such as DDoS attacks and balance the load of such efforts across its network.

What can DNS do to increase web performance?

Servers can store the answers they get for a specified time to increase efficiency. Servers can store the answers they receive for a specific period to make it easier to respond to the next request. If all employees in one office wish to view the same training video on a website, the local DNS server will typically only need to resolve the name once and can then serve all other requests from its cache. You can set the length of time that the record is kept. The server load is reduced if the record has longer values. However, shorter values will guarantee more accurate responses.

Choose a reliable CDN/DNS

It can be difficult to choose the right CDN or DNS offering. You need to partner with a company capable of keeping up with the changing internet environment. Comodo, founded by its founders, has been protecting customers online for more than two decades. It is the world’s largest provider of SSL certificates (certificate authority business) and has been around since the beginning. With its cWatch Web security system, it continues to secure the online community.

Comodo cWatch Web allows websites to use its secure Content Delivery Network, (CDN), and its Authoritative Domain Name Server to increase performance and traffic. cWatch customers can experience the following:

  • Smart Routing Traffic is routed to the best servers based on network conditions or geographic proximity
  • Instant Purge: Cache Invalidation to Remove Content from the Cache in Milliseconds If you delete content from our CDN, it will immediately stop being served anywhere.
  • Remain online: Higher uptime because our network can serve “stale content” from the cache in case of an origin server failure
  • Security – Built-in security, reinforced by platform-wide features such as DDoS mitigation

Its centrally managed Security Information and Event Management system (SIEM), is located within both the CDN and Authoritative DNS. This allows for traffic monitoring and provides comprehensive visibility. The SIEM can detect breaches and threats early, provide rapid incident response times, log management, and report on compliance. To identify potential risks before they happen, the SIEM uses threat intelligence data from Comodo’s 85,000,000 global endpoints and over 100 million valid domains.

The SIEM is the heart of the cWatch security stack. It sends alerts to the Cyber Security Opera Center (CSOC team) to identify and mitigate threats to customers before they occur, enabling them to respond quickly to attacks.

Comodo’s cWatch Web is a web security solution that provides more than a managed DNS and CDN. It offers the following features in one affordable package:

  • Malware Monitoring & Remediation: Detects and provides tools and methods to remove it. It also helps prevent future malware attacks
  • Secure Content Delivery Network, (CDN), This global network of distributed servers is designed to improve the performance of web apps and websites.
  • Security Information and Event Management: Advanced Intelligence that can use existing events and data from 85M+ domains and 100M+ endpoints
  • Cyber Security Operations Center: A team comprised of certified cybersecurity professionals who provide 24/7 surveillance and remediation services.
  • Web Application Firewall: Provides real-time edge protection to websites and web apps, with advanced security, filtering, and intrusion prevention
  • PCI scanning: This scanning process will allow merchants and service providers to be compliant with the PCI DSS.