Sysfacts Logo
de_DE DE
de_DE DE
  • Objective
  • Achievements
  • Insights
  • Services

E-Mail

Tel.

hello@sysfacts.com +49 221 670572 0
Contact Us
  • Objective
  • Achievements
  • Insights
  • Services
  • Contact
  • News
  • Case Studies
  • Careers

Sysfacts AG
Rudolfplatz 3
50674 Cologne
Germany
—

E-Mail

Tel.

hello@sysfacts.com +49 221 670572 0
de_DE DE
de_DE DE
Post Thumbnail
Return to articles

Date → 11 • January • 2023

Author → Yannick Haymann

Network segmentation as a security aspect

490 words •

IT infrastructure

Share on Linkedin

Share on Facebook

Share on Twitter

SHARE

We deal intensively with IT architecture and how a clean architecture can significantly increase in security without a great deal of effort.

Today, I would like to discuss two well-known but rarely used technologies from the network area: VLANs and port security.

VLAN (Virtual Local Area Network) and port security are two crucial network segmentation components that improve network security and efficiency. VLANs logically separate a physical network into different broadcast domains, providing better network organization and resource utilization. On the other hand, port security restricts unauthorized access to a network by limiting the number of MAC addresses allowed on a switch port.

VLANs offer several benefits to a network. By separating different departments, applications, or user groups into separate broadcast domains, VLANs improve network performance and reduce the risk of broadcast storms. Furthermore, VLANs provide a higher level of security, as they limit the visibility of sensitive data and reduce the risk of unauthorized access.

In addition, VLANs can be selectively routed together on a port and IP basis by internal firewalls. This is done by configuring firewall rules that allow or block traffic between different VLANs based on specific criteria such as IP address or port number. Also, using an internal firewall, an organization can control traffic flow between VLANs and ensure that only authorized traffic may pass through. For example, a company may want to allow all traffic between the VLANs for the finance and HR departments but block all traffic between the VLAN for the research and development department and the rest of the network.

Port security is a valuable tool for improving network security. By limiting the number of MAC addresses allowed on a switch port, port security can prevent unauthorized devices from accessing the network, reducing the risk of network attacks and the spread of malware or other malicious software.

In conclusion, the use of VLANs and port security can greatly enhance network security and efficiency. By logically separating a network into different broadcast domains and restricting unauthorized access, these technologies can help organizations protect their networks against potential threats. Using internal firewalls to selectively route VLANs together on a port and IP basis further enhances network security by providing the ability to control the flow of traffic between VLANs.

When designing VLANs, I find it particularly important that the grouping is not necessarily based on technical issues, but rather that you consider which systems belong together from an operational perspective and where building in “firewalls” makes sense. The question is, where can I close the bulkheads and still maintain a certain level of productivity in business areas not affected? If I simply separate the “server network” from the “client network”, I have largely interrupted all business processes. For example, if I isolate the warehouse management components (for example, database, application server and controllers) from the network in a suspected case, I have contained the restriction to the logistics area, at least for now.

Digitization
Post Thumbnail
Remote Desktop Solutions – A Quick Win in the Logistics Industry

Date → 24 • January • 2023

Author → Yannick Haymann

Read More
Digitization
Post Thumbnail
The infrastructure bias

Date → 1 • December • 2022

Author → Yannick Haymann

Read More

Accelerate your IT Infrastructure.

Schedule Consultation

About

  • Objective
  • Achievements
  • Insights
  • Contact Us

Services

  • IT Restructuring
  • Cloud Migration
  • Advanced Housing

Resources

  • Careers
  • Schedule a consultation
  • Case Studies
  • News

Legal

  • Imprint
  • Terms & Conditions
  • Privacy Policy

Our Clients

Partner Logo
Partner Logo
Partner Logo
Partner Logo
Partner Logo
Partner Logo
Partner Logo
Partner Logo
Partner Logo
Partner Logo
Partner Logo
Partner Logo
Partner Logo
Partner Logo
Partner Logo
Partner Logo
Partner Logo
Partner Logo
Partner Logo
Partner Logo
LinkedIn Xing Instagram

© 2023 Sysfacts AG

LinkedIn Xing Instagram

Designed by Alphamark™

Cookie Consent

By clicking “Accept Cookies”, you agree to the storing of cookies on your device to enhance site navigation, analyze site usage and assist in our marketing efforts. Privacy Policy

Accept AllCookies Settings
Manage consent

Privacy Overview

This website uses cookies to improve your experience while you navigate through the website. Out of these, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. We also use third-party cookies that help us analyze and understand how you use this website. These cookies will be stored in your browser only with your consent. You also have the option to opt-out of these cookies. But opting out of some of these cookies may affect your browsing experience.
Necessary
Always Enabled
Necessary cookies are absolutely essential for the website to function properly. These cookies ensure basic functionalities and security features of the website, anonymously.
CookieDurationDescription
cookielawinfo-checkbox-analytics11 monthsThis cookie is set by GDPR Cookie Consent plugin. The cookie is used to store the user consent for the cookies in the category "Analytics".
cookielawinfo-checkbox-functional11 monthsThe cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional".
cookielawinfo-checkbox-necessary11 monthsThis cookie is set by GDPR Cookie Consent plugin. The cookies is used to store the user consent for the cookies in the category "Necessary".
cookielawinfo-checkbox-others11 monthsThis cookie is set by GDPR Cookie Consent plugin. The cookie is used to store the user consent for the cookies in the category "Other.
cookielawinfo-checkbox-performance11 monthsThis cookie is set by GDPR Cookie Consent plugin. The cookie is used to store the user consent for the cookies in the category "Performance".
viewed_cookie_policy11 monthsThe cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. It does not store any personal data.
Functional
Functional cookies help to perform certain functionalities like sharing the content of the website on social media platforms, collect feedbacks, and other third-party features.
Performance
Performance cookies are used to understand and analyze the key performance indexes of the website which helps in delivering a better user experience for the visitors.
Analytics
Analytical cookies are used to understand how visitors interact with the website. These cookies help provide information on metrics the number of visitors, bounce rate, traffic source, etc.
Advertisement
Advertisement cookies are used to provide visitors with relevant ads and marketing campaigns. These cookies track visitors across websites and collect information to provide customized ads.
Others
Other uncategorized cookies are those that are being analyzed and have not been classified into a category as yet.
SAVE & ACCEPT
en_US EN
en_US EN
de_DE DE