topic Re: Modem, Router, Switch in Network Security

Modem, Router, Switch

lejarac — Thu, 28 Sep 2023 15:16:24 GMT

Hi everyone,

I have some questions about ports and communication serial.

1.- What does it mean "Segmentable network port"?

2.- What standards about Network Security apply on "Serial Port"?

My technical Specification of my device are:

I really appreciate your help about these question, please. Thank you so much in advance.

Re: Modem, Router, Switch

Martin L — Thu, 28 Sep 2023 16:37:58 GMT

Devices names/brands are missing ? Should we assume that Column D is for modem, E is for Router , etc ?

Regards, ML
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Re: Modem, Router, Switch

lejarac — Thu, 28 Sep 2023 16:52:41 GMT

Hi, consider just column F, it is a Remote Terminal Unit (RTU), I would like to know about these concepts or meanings "segmentable netowrk port" and "Network security on serial port". I know it is not the same with modem, switch, routers, but at least it would help me to have a better concept.

Re: Modem, Router, Switch

Martin L — Thu, 28 Sep 2023 23:48:57 GMT

meaning of "Segmentable network port" I guess it means "network Segmentation" where network is completely disconnected from others networks (based on ports). in case of routers, 2 ports with different networks, they do inter-communicate with each others by default; no config needed. You have to apply configuration to segment those networks.

The definition : Network segmentation is a network security technique that divides a network into smaller, distinct sub-networks that enable network teams to compartmentalize the sub-networks and deliver unique security controls and services to each sub-network.

What are examples of network segmentation?

Network segment examples

VLAN segmentation: Networks are typically segmented with VLANs or subnets. ...
Firewall segmentation: Firewalls are an alternative way to enforce segmentation. ...
SDN segmentation: A more modern approach to segmentation applies an SDN-automated network overlay.

https://www.google.com/search?client=firefox-b-1-e&q=network+Segmentation

Regards, ML
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Re: Modem, Router, Switch

Martin L — Thu, 28 Sep 2023 23:52:44 GMT

also read Cisco What Is Network Segmentation?

https://www.cisco.com/c/en/us/products/security/what-is-network-segmentation.html

Regards, ML
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