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My business idea is about networking, can one tell me about which devices is suitable for internet conectivity for small and corporate companies

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Good question to clarify, because the answer depends on what you are trying to build. As suggests, start with size, internet speed, apps, remote users, and any compliance needs. Quick roles: a router moves traffic between networks (and usually does NAT), a firewall enforces security policy, and a web proxy inspects/filters web traffic. In small offices these are often combined in one appliance; in larger networks they are separate.

Two practical starting points:

  • Small office (<=50 users): ISP modem/ONT -> business-class router/NGFW with VPN, IDS/IPS, and DNS filtering -> managed PoE switch -> Wi‑Fi 6/6E access points -> UPS and basic monitoring. Aim for dual-WAN or LTE/5G failover if downtime hurts revenue. NIST’s small business guidance has good checklists for this scale https://www.nist.gov/itl/smallbusinesscyber.
  • Corporate/branch: Redundant ISPs, an NGFW pair (HA), SD‑WAN or edge routers, Layer‑3 core with VLANs, RADIUS/802.1X, separate secure web gateway/proxy if you need deep web controls, and centralized logging/SIEM. Size firewalls for real throughput with security features on.

As noted, expect lots of IoT. Isolate it. A simple, vendor‑neutral layout:

VLAN10 Corp: 192.168.10.0/24
VLAN20 Voice: 192.168.20.0/24
VLAN30 Guest: 192.168.30.0/24 (AP client isolation on)
VLAN40 IoT: 192.168.40.0/24

Rules:
- Block VLAN40 -> RFC1918; allow only Internet (80/443) and NTP.
- Block VLAN30 -> all LAN; allow Internet only.
- Allow VLAN20 -> call controller; apply QoS (EF) for voice.
- Allow VPN -> VLAN10 as required; log everything.

Document and enforce these with your firewall; NIST’s firewall guidance explains why segmentation and policy matter https://csrc.nist.gov/publications/detail/sp/800-41/rev-1/final. For wireless, choose business APs that support multiple SSIDs mapped to VLANs and WPA3/Wi‑Fi 6/6E for capacity and security .

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Member Avatar for Dani

Sorry, I'm not quite sure I understand your question. What is your business idea? What do you mean about which devices are suitable for internet connectivity? Desktops, laptops, tablets, and phones are all suitable devices to connect to the internet. I'm sorry, I'm not understanding your question.

Member Avatar for rproffitt

Today and going beyond what most folk use, at the office and in prior work we would connect almost everything to the Internet which you may have read the phrase "The Internet of Things." Or IoT.

This of course has lead to some issues with a lot of devices having poor to no security but we're not turning back.

My answer is "everything."
everything.PNG

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